{
  "data": {
    "a": {
      "slug": "higgsfield",
      "name": "Higgsfield API",
      "vendor": "Higgsfield Inc.",
      "vendorUrl": "https://higgsfield.ai",
      "kind": "http-api",
      "category": "video-generation",
      "summary": "Higgsfield's API for generating images and video from its own models (Genjutsu, Soul, Cinema Studio) and hosted ones such as Kling, Seedance and Wan. Requests are asynchronous, with polling or webhooks, and Python and TypeScript SDKs.",
      "url": "https://www.anchorterminal.com/tools/higgsfield",
      "markdownUrl": "https://www.anchorterminal.com/tools/higgsfield.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/higgsfield.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/higgsfield.json",
      "dns": "higgsfield.grade.anchorterminal.com",
      "repo": "https://github.com/higgsfield-ai/higgsfield-client",
      "license": "Proprietary service under the Higgsfield API Terms of Service. The Python SDK repository is Apache-2.0 and the TypeScript SDK is MIT on npm",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.higgsfield.ai",
      "packages": [
        {
          "registry": "pypi",
          "name": "higgsfield-client"
        },
        {
          "registry": "npm",
          "name": "@higgsfield/client"
        }
      ],
      "auth": "api-key",
      "authNotes": "Self-serve. A person signs up at open.higgsfield.ai (email and password, or SSO) and creates a key ID and secret in the console. Send them as `Authorization: Key \u003ckey_id\u003e:\u003ckey_secret\u003e`. The legacy `hf-api-key` and `hf-secret` headers still work. Keys belong to a workspace and carry no scopes. Some endpoints that depict a real person's face or voice can need identity or business verification under the API terms.",
      "pricing": "usage",
      "pricingNotes": "Pay as you go from a prepaid balance, priced per second of video or per image, with list prices public at open.higgsfield.ai/pricing. No free credits or free tier were found, and no sandbox. Kling 3.0 lists from $0.084 a second, Kling 4.0 from $0.094 and Seedance 2.5 from $0.206. A lower max-discount price is shown beside each, and a cashback scheme started at $5,000 of spend in 30 days per the 8 October check. Credits expire after a year (checked 2026-11-02).",
      "priceSummary": "Pay per use",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI file, llms.txt or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 126,
        "npmWeekly": 197350,
        "pypiWeekly": 28142,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://docs.higgsfield.ai/docs",
      "llmsTxt": "https://docs.higgsfield.ai/docs/llms.txt",
      "openapi": "https://docs.higgsfield.ai/docs/openapi.json",
      "capabilities": [
        "video.generate",
        "video.image-to-video",
        "video.edit",
        "video.audio",
        "image.generate",
        "image.edit"
      ],
      "tags": [
        "official",
        "hosted",
        "closed-source",
        "model-platform",
        "card-required",
        "openapi",
        "llms-txt",
        "async-jobs",
        "webhooks",
        "idempotency",
        "python",
        "typescript",
        "status-page"
      ],
      "lastRelease": "2026-09-17",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 62.7,
        "grade": "B",
        "agentReady": false,
        "rank": 542,
        "ranked": true,
        "rankOf": 1510,
        "categoryRank": 5,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 81,
          "maintenance": 65,
          "payments": 20,
          "reliability": 80,
          "schema": 70,
          "security": 48,
          "transparency": 64
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-11-02"
        },
        "negative": 0,
        "verdict": "One asynchronous API for 67 video and 17 image catalogue entries, with idempotency keys, per-second list prices public without a login, and failed or moderated jobs not charged. Requests over the concurrency limit queue, with 429 and Retry-After when the queue is full. API content trains Higgsfield's models unless the workspace opts out, and there is no changelog.",
        "bestFor": "An agent that wants several vendors' video models behind one key, one request lifecycle and safe retries, at published per-second prices.",
        "strengths": [
          "Per-second list prices for each model on open.higgsfield.ai/pricing without a login, and an `/estimate/...` call that returns the cost before submitting",
          "`Idempotency-Key` on every generation endpoint, with replays returning the original `request_id` and no second charge",
          "Requests ending `failed` or `nsfw` aren't charged, and a queued request cancelled before it starts is refunded",
          "Each model page carries a full JSON Schema with enums, limits and `additionalProperties: false`, and llms.txt and Markdown twins exist",
          "Over the concurrency limit, requests queue, and a full queue answers 429 with `Retry-After`, a `retryable` flag and a machine-readable `code`",
          "Webhook deliveries are signed with the Standard Webhooks scheme, and the signing secret rotates with a 24-hour overlap"
        ],
        "weaknesses": [
          "API inputs and outputs can train Higgsfield's models by default. The opt-out is a workspace setting, processed within 10 business days",
          "Most error answers are still a `detail` message string, with machine-readable codes only on queue, admission and key errors",
          "No changelog was found in the docs, although the API terms name one as the channel for deprecations and removals",
          "Keys have no scopes or read-only mode, though they can now carry an expiry and be disabled",
          "No free credits were found, and a new account starts at 2 concurrent generations until it adds $25",
          "`/docs/openapi.json` covers 9 paths of an 84-entry catalogue, and llms.txt calls it supplementary"
        ],
        "agentNotes": [
          "Send `Authorization: Key \u003ckey_id\u003e:\u003ckey_secret\u003e` to https://api.higgsfield.ai. A Bearer token is rejected",
          "Send a fresh `Idempotency-Key` with every generation. After a timeout or 5xx, repeat the same request with the same key, then read `status_url`",
          "Expect a request over the concurrency limit to come back `queued`. On 429 `account_queue_full`, wait `Retry-After` seconds and resubmit with the same `Idempotency-Key`",
          "Poll `status_url` from 2 seconds up to 10 with jitter, and stop on `completed`, `failed`, `nsfw` or `canceled`",
          "Download output before `expires_at`, seven days after it finishes by default. Send `Hf-Expires-After` (3600 seconds or more) to keep it for less",
          "Read the model's own docs page for its schema. The OpenAPI file lists only a few models",
          "Verify the `webhook-signature` header on every webhook delivery against the account's `whsec_` secret before trusting it"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 4,
        "avgRating": 2.3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 62.7
          }
        ],
        "editorialScores": {
          "ergonomics": 81,
          "maintenance": 65,
          "payments": 20,
          "reliability": 80,
          "schema": 70,
          "security": 48,
          "transparency": 50
        },
        "provenanceScore": 78,
        "checked": {
          "categories": {
            "ergonomics": "2026-11-02",
            "maintenance": "2026-11-02",
            "payments": "2026-11-02",
            "reliability": "2026-11-02",
            "schema": "2026-11-02",
            "security": "2026-11-02",
            "transparency": "2026-11-02"
          },
          "last": "2026-11-02",
          "lastMoved": "2026-11-02",
          "oldest": "2026-11-02",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "install": "pip install higgsfield-client",
        "http": "curl --request POST \\\n  --url https://api.higgsfield.ai/higgsfield/genjutsu/motion-transfer/v1.0 \\\n  --header \"Authorization: Key ${HF_API_KEY_ID}:${HF_API_KEY_SECRET}\" \\\n  --header \"Content-Type: application/json\" \\\n  --data '{\"video_url\": \"https://example.com/input.mp4\", \"image_urls\": [\"https://example.com/input.jpg\"]}'"
      },
      "letme": {
        "capability": "https://letme.dev/video.generate",
        "tool": "https://letme.dev/higgsfield"
      },
      "area": "content",
      "unitPrices": [
        {
          "item": "Kling 3.0, list price from",
          "unit": "video-second",
          "usd": 0.084,
          "note": "The pricing page also shows a max-discount price from $0.042. The discount's conditions weren't readable"
        },
        {
          "item": "Seedance 2.5, list price from",
          "unit": "video-second",
          "usd": 0.206,
          "note": "Max-discount price from $0.144"
        },
        {
          "item": "Wan 3.0 Prime, list price from",
          "unit": "video-second",
          "usd": 0.068,
          "note": "Max-discount price from $0.041"
        },
        {
          "item": "Genjutsu 480p, list price",
          "unit": "video-second",
          "usd": 0.318,
          "note": "Per second of source video, rounded up. 720p $0.681 and 1080p $1.632 per the docs. Max-discount price from $0.159"
        },
        {
          "item": "Kling 2.5, list price from",
          "unit": "video-second",
          "usd": 0.042,
          "note": "Max-discount price from $0.021"
        }
      ],
      "provenance": {
        "legalEntity": "Higgsfield Inc.",
        "domain": "higgsfield.ai",
        "domainRegistered": "2023-06-07",
        "endpointOnVendorDomain": true,
        "terms": "https://open.higgsfield.ai/terms-of-service",
        "privacy": "https://higgsfield.ai/privacy-policy",
        "statusPage": "https://status.higgsfield.ai",
        "changelog": "",
        "securityTxt": "valid",
        "checked": "2026-11-02",
        "notes": [
          "The API Terms of Service (last updated 2 September 2026) name Higgsfield Inc., 535 Mission St, 14th Floor, San Francisco, CA 94105, and are supplemental to the Terms of Use Agreement, last updated 23 October 2026, at https://higgsfield.ai/terms-of-use-agreement.",
          "The privacy policy (last updated 31 October 2026) says it covers the website, applications and APIs. The API terms incorporate a DPA where Higgsfield processes personal data on a customer's behalf. We found no public link to it.",
          "The API answers at https://api.higgsfield.ai. The docs and status page send people to the console at https://console.higgsfield.ai, and pricing stays at https://open.higgsfield.ai.",
          "https://higgsfield.ai/.well-known/security.txt has a contact, a PGP key and an expiry of 12 September 2027. Its comment block is a set of instructions addressed to AI agents and automated security tools about testing scope. We recorded it and did not act on it.",
          "No changelog page is in the docs sitemap on 2 November 2026. The API terms list a changelog as part of the documentation.",
          "RDAP for higgsfield.ai gives a registration date of 2023-06-07."
        ],
        "score": 78
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/higgsfield.json",
      "live": {
        "slug": "higgsfield",
        "probe": {
          "target": "https://api.higgsfield.ai",
          "method": "get",
          "lastAt": "2026-11-08T00:55:44.303624218Z",
          "lastOk": true,
          "lastStatus": 405,
          "lastMs": 101,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 127,
          "p95ms24h": 196,
          "samples24h": 244,
          "samples30d": 7355,
          "days": [
            {
              "date": "2026-10-09",
              "probes": 169,
              "ok": 169
            },
            {
              "date": "2026-10-10",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-11",
              "probes": 247,
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            {
              "date": "2026-10-12",
              "probes": 247,
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            {
              "date": "2026-10-13",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-14",
              "probes": 249,
              "ok": 249
            },
            {
              "date": "2026-10-15",
              "probes": 253,
              "ok": 253
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            {
              "date": "2026-10-16",
              "probes": 252,
              "ok": 252
            },
            {
              "date": "2026-10-17",
              "probes": 253,
              "ok": 253
            },
            {
              "date": "2026-10-18",
              "probes": 256,
              "ok": 256
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            {
              "date": "2026-10-19",
              "probes": 255,
              "ok": 255
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            {
              "date": "2026-10-20",
              "probes": 252,
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            {
              "date": "2026-10-21",
              "probes": 253,
              "ok": 253
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            {
              "date": "2026-10-22",
              "probes": 253,
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              "date": "2026-10-23",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-24",
              "probes": 251,
              "ok": 251
            },
            {
              "date": "2026-10-25",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-26",
              "probes": 252,
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            {
              "date": "2026-10-27",
              "probes": 249,
              "ok": 249
            },
            {
              "date": "2026-10-28",
              "probes": 251,
              "ok": 251
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            {
              "date": "2026-10-29",
              "probes": 248,
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            {
              "date": "2026-10-30",
              "probes": 249,
              "ok": 249
            },
            {
              "date": "2026-10-31",
              "probes": 251,
              "ok": 251
            },
            {
              "date": "2026-11-01",
              "probes": 249,
              "ok": 249
            },
            {
              "date": "2026-11-02",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-11-03",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-11-04",
              "probes": 246,
              "ok": 246
            },
            {
              "date": "2026-11-05",
              "probes": 185,
              "ok": 185
            },
            {
              "date": "2026-11-06",
              "probes": 241,
              "ok": 241
            },
            {
              "date": "2026-11-07",
              "probes": 243,
              "ok": 243
            },
            {
              "date": "2026-11-08",
              "probes": 10,
              "ok": 10
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.higgsfield.ai",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-11-08T00:31:29.801736441Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "@higgsfield/client",
            "version": "0.2.6",
            "seenAt": "2026-11-06T23:32:47.133624635Z"
          },
          {
            "registry": "pypi",
            "name": "higgsfield-client",
            "version": "0.2.0",
            "released": "2026-09-17",
            "seenAt": "2026-11-06T23:32:46.883666941Z"
          }
        ],
        "githubStars": 140,
        "npmWeekly": 76866,
        "pypiWeekly": 30153,
        "securityTxt": {
          "url": "https://higgsfield.ai/.well-known/security.txt",
          "state": "valid",
          "expires": "2027-09-12T00:00:00.000Z",
          "checkedAt": "2026-11-07T16:00:51.326783399Z"
        },
        "llmsTxt": {
          "url": "https://docs.higgsfield.ai/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-11-07T15:32:41.851024863Z"
        },
        "domain": {
          "domain": "higgsfield.ai",
          "registered": "2023-06-07",
          "source": "https://rdap.identitydigital.services/rdap/domain/higgsfield.ai",
          "checkedAt": "2026-11-01T14:24:01.554808068Z"
        },
        "pages": [
          {
            "url": "https://higgsfield.ai/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-11-07T14:11:05.560675909Z",
            "changedAt": "2026-11-06T13:33:09.594068748Z",
            "fingerprint": "8f7315d7a50a"
          },
          {
            "url": "https://open.higgsfield.ai/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-11-07T14:15:22.03118301Z",
            "changedAt": "2026-10-13T20:20:17.09443769Z",
            "fingerprint": "0e9c73f01c66"
          }
        ],
        "github": {
          "repo": "higgsfield-ai/higgsfield-client",
          "checkedAt": "2026-11-02T08:54:29.747859405Z",
          "stars": 140,
          "archived": false,
          "issuesEnabled": true,
          "pushedAt": "2026-09-17T17:01:20Z",
          "openIssues": 3,
          "openPRs": 2,
          "issuesOpened90d": 2,
          "issuesClosed90d": 0,
          "prsMerged90d": 2,
          "replies": {
            "sampled": 3,
            "unanswered": 3
          }
        },
        "updatedAt": "2026-11-08T00:55:44.303624218Z"
      }
    },
    "answer": "Higgsfield API scores 62.7 (B) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 4 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.",
    "b": {
      "slug": "sync-labs-mcp",
      "name": "sync. labs MCP server",
      "vendor": "Synchronicity Labs (sync.)",
      "vendorUrl": "https://sync.so",
      "kind": "mcp",
      "category": "video-generation",
      "summary": "sync. labs' open-source MCP server lets an agent lip-sync video to new audio or a script, dub it into other languages with matching lips, and manage generations, hosted with OAuth for web clients or run locally with an API key.",
      "url": "https://www.anchorterminal.com/tools/sync-labs-mcp",
      "markdownUrl": "https://www.anchorterminal.com/tools/sync-labs-mcp.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/sync-labs-mcp.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/sync-labs-mcp.json",
      "dns": "sync-labs-mcp.grade.anchorterminal.com",
      "repo": "https://github.com/synchronicity-labs/mcp-server",
      "license": "MIT",
      "transports": [
        "streamable-http"
      ],
      "remoteUrl": "https://mcp.sync.so/mcp",
      "packages": [],
      "auth": "mixed",
      "authNotes": "OAuth for Claude Web and ChatGPT, tied to the active sync. organisation. Local and editor setups run @sync.so/mcp-server with a SYNC_API_KEY.",
      "pricing": "paid",
      "pricingNotes": "Plans from $5 a month (hobbyist) to $49 and up, plus usage per second of video (for example $5 a month plus $0.05 a second); dubbing audio $0.10 a second, text-to-speech $0.004 a second. A free try for videos up to a minute (checked 2026-11-07).",
      "priceSummary": "Paid",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 on the MCP docs or pricing page (checked 2026-11-07).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-11-07"
      },
      "docsUrl": "https://sync.so/docs/plugins-and-extensions/mcp-server",
      "llmsTxt": "https://sync.so/llms.txt",
      "registryName": "io.github.synchronicity-labs/mcp-server",
      "capabilities": [
        "video.edit",
        "video.audio",
        "translation.dubbing"
      ],
      "tags": [
        "official",
        "hosted",
        "mcp",
        "remote-mcp",
        "oauth",
        "api-key",
        "paid",
        "status-page",
        "open-source",
        "llms-txt",
        "mcp-registry"
      ],
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 51.5,
        "grade": "D",
        "agentReady": false,
        "rank": 1026,
        "ranked": true,
        "rankOf": 1510,
        "categoryRank": 10,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 55,
          "maintenance": 75,
          "payments": 30,
          "reliability": 43,
          "schema": 81,
          "security": 38,
          "transparency": 44
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-11-07"
        },
        "negative": 0,
        "verdict": "sync. labs' MCP server is open source, generated from its API spec with workflow tools on top, and released often, with clear per-second prices for lip sync and dubbing. Security and data handling are thinly documented, and there's no read-only mode.",
        "bestFor": "Agents that lip-sync or dub video into other languages.",
        "strengths": [
          "Open source under MIT, with tests and CI",
          "Tools generated from the public API spec, so they track the API",
          "Per-second prices published",
          "OAuth for web clients, API key locally",
          "Frequent tagged releases"
        ],
        "weaknesses": [
          "No read-only mode",
          "Data handling and security programme not documented in the pages read",
          "Only a short free try"
        ],
        "agentNotes": [
          "Get an estimate before long generations",
          "Dub or lip-sync only voices and faces the user has the right to use",
          "Check the active organisation before connecting with OAuth"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 51.5
          }
        ],
        "editorialScores": {
          "ergonomics": 55,
          "maintenance": 75,
          "payments": 30,
          "reliability": 43,
          "schema": 81,
          "security": 38,
          "transparency": 40
        },
        "provenanceScore": 48,
        "checked": {
          "categories": {
            "ergonomics": "2026-11-07",
            "maintenance": "2026-11-07",
            "payments": "2026-11-07",
            "reliability": "2026-11-07",
            "schema": "2026-11-07",
            "security": "2026-11-07",
            "transparency": "2026-11-07"
          },
          "last": "2026-11-07",
          "oldest": "2026-11-07",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "claudeCode": "claude mcp add sync-labs --transport http https://mcp.sync.so/mcp",
        "config": {
          "mcpServers": {
            "sync-labs": {
              "url": "https://mcp.sync.so/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/video.edit",
        "tool": "https://letme.dev/sync-labs-mcp"
      },
      "area": "content",
      "unitPrices": [
        {
          "item": "Lip sync video (hobbyist)",
          "unit": "video-second",
          "usd": 0.05,
          "note": "Plus $5 a month plan"
        },
        {
          "item": "Dubbing audio",
          "unit": "video-second",
          "usd": 0.1
        }
      ],
      "provenance": {
        "legalEntity": "Synchronicity Labs",
        "domain": "sync.so",
        "domainRegistered": "",
        "domainNote": "Not looked up: RDAP isn't requested under the 1 November 2026 rules.",
        "endpointOnVendorDomain": true,
        "terms": "",
        "privacy": "",
        "statusPage": "https://status.sync.so",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-11-07",
        "notes": [
          "The repository is MIT. Terms and privacy weren't read."
        ],
        "score": 48
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/sync-labs-mcp.json",
      "live": {
        "slug": "sync-labs-mcp",
        "probe": {
          "target": "https://mcp.sync.so/mcp",
          "method": "mcp-initialize",
          "lastAt": "2026-11-08T00:56:07.887985939Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 321,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 362,
          "p95ms24h": 437,
          "samples24h": 63,
          "samples30d": 63,
          "days": [
            {
              "date": "2026-11-07",
              "probes": 53,
              "ok": 53
            },
            {
              "date": "2026-11-08",
              "probes": 10,
              "ok": 10
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.sync.so",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-11-08T00:32:26.812315776Z"
        },
        "updatedAt": "2026-11-08T00:56:07.887985939Z"
      }
    },
    "edges": [
      {
        "by": 37,
        "category": "reliability",
        "leads": "higgsfield",
        "name": "Reliability",
        "reasons": {
          "a": "Hosted reading. status.higgsfield.ai now shows Models API, Webhooks and Developer Console components with 90-day uptime bars (20). Its incident and maintenance feed is empty and its history pages redirect to the front page, so the page has never posted an incident, which this run reads at 20, not as a clean record (20 of 30). Concurrency limits are published with numbers, 2 for a new account and 10, 20 and 40 at $25, $100 and $1,000 of funds added in 28 days, and the queue limit is a stated multiple of concurrency (15). Since late October, requests over the concurrency limit are queued, and a full queue answers 429 with `Retry-After`, a `retryable` flag and `account_queue_full`. The docs give backoff with jitter, a retry table and idempotency keys for submissions (15). The API terms say self-serve customers get no uptime commitment and the docs offer SLAs only in an enterprise agreement, with none published (0). No beta or preview label on the API (10). 20 + 20 + 15 + 15 + 0 + 10 = 80.",
          "b": "Status page at status.sync.so with maintenance and previous incidents (20). History not read (5). No MCP limits found (0). The source has abort-signal handling and recovery guidance for long jobs (8 of 15). No SLA found (0). Version 0.2.4, not labelled beta (10). 20 + 5 + 0 + 8 + 0 + 10 = 43."
        },
        "scores": {
          "a": 80,
          "b": 43
        }
      },
      {
        "by": 26,
        "category": "ergonomics",
        "leads": "higgsfield",
        "name": "Agent ergonomics",
        "reasons": {
          "a": "Submissions return a small JSON handle, results are URLs, and webhooks replace polling (20 of 25). Resolution, duration and aspect ratio set output size per model. No endpoint to list requests was found in the docs (10 of 20). The error page says which statuses to retry, and the limit now arrives as a 429 with `Retry-After`, `code`, `retryable` and `retry_after_seconds`, and expired or disabled keys as 403 with a `code`. Other errors are message strings the docs warn against parsing (16 of 20). `Idempotency-Key` on every generation endpoint, with a 422 on a reused key with different parameters, plus cancel for queued requests (20). Few required parameters, sensible defaults, and official Python and TypeScript SDKs (15). 20 + 10 + 16 + 20 + 15 = 81.",
          "b": "A generated catalogue filtered by client profile, curated for ChatGPT (15). Project history and estimates (12 of 20). Recovery tools; errors not documented (8 of 20). Annotations not read (5 of 20). OAuth or a key, npm package and library use (15). 15 + 12 + 8 + 5 + 15 = 55."
        },
        "scores": {
          "a": 81,
          "b": 55
        }
      },
      {
        "by": 20,
        "category": "transparency",
        "leads": "higgsfield",
        "name": "Transparency \u0026 trust",
        "reasons": {
          "a": "Closed service with API terms dated 2 September 2026 that are specific on licence, resale and outputs. SDKs are MIT and Apache-2.0 (15). The API terms state training on inputs and outputs by default with a workspace opt-out, request records kept while the account is active, media kept at least seven days and zero retention only by enterprise addendum, and the privacy policy of 31 October 2026 agrees on training. The docs now let a request set its own retention down to one hour and delete a finished request, but the docs' opt-out page says it covers outputs only, against the terms' inputs and outputs. The DPA the terms incorporate was not found (20 of 30). The status page carries a dated notice that platform.higgsfield.ai stops serving the API by 31 October 2026, the terms promise efforts to announce model removals, and legacy endpoints are labelled, but there is no changelog (10 of 20). Partner models are named by vendor in the catalogue. The subprocessor list is said to sit in the trust centre, which was unread, and no data locations were found (5 of 20). 15 + 20 + 10 + 5 = 50.",
          "b": "MIT open source (30). Data handling not read (5 of 30). No deprecation policy; earlier tool names documented as superseded (5 of 20). Subprocessors not found (0). 30 + 5 + 5 + 0 = 40."
        },
        "scores": {
          "a": 64,
          "b": 44
        }
      },
      {
        "by": 11,
        "category": "schema",
        "leads": "sync-labs-mcp",
        "name": "Schema \u0026 documentation",
        "reasons": {
          "a": "`/docs/openapi.json` is public OpenAPI 3.1 but covers 9 paths, and llms.txt calls it supplementary. Each model page carries its own full JSON Schema (15 of 25). llms.txt, llms-full.txt and Markdown twins of every page (10). Model pages state the endpoint, usage notes and limits, with little on when to pick one model over another (14 of 20). Schemas have enums, length and item limits, required fields and `additionalProperties: false` (14 of 15). cURL, Python and TypeScript examples on each page and a status-code table. Most errors are still a FastAPI `detail` string, though queue, admission and key errors now carry a `code` (12 of 15). Endpoints carry a version segment, and no changelog was found in the docs or sitemap on 2 November (5 of 15). 15 + 10 + 14 + 14 + 12 + 5 = 70.",
          "b": "Tools generated from the public API specification plus workflow tools, with typed schemas in the source (25). llms.txt and .md pages (10). Tool table with descriptions (14 of 20). Typed from the API spec (12 of 15). Examples and an estimates tool; errors not documented (8 of 15). Tags v0.2.2 to v0.2.4 and dated commits (12 of 15). 25 + 10 + 14 + 12 + 8 + 12 = 81."
        },
        "scores": {
          "a": 70,
          "b": 81
        }
      },
      {
        "by": 10,
        "category": "security",
        "leads": "higgsfield",
        "name": "Security \u0026 auth",
        "reasons": {
          "a": "Hosted reading. A key ID and secret pair created in the console and owned by a personal or organisation account, with an optional expiry, last-used date, tags, disable and delete, and rotation advised, but no permission scopes. Secrets travel in a header, not the URL (20). No read-only or restricted keys and no confirmation step. Organisations have admin and member roles, only admins manage keys, and an estimate call shows cost before spending (3 of 20). The API returns generated media and no third-party text (10). Request history and usage analytics by key in the console and an `X-Correlation-ID` on every response, no audit log found (8 of 15). A valid security.txt with a PGP key, expiring 12 September 2027, and a disclosure clause in the terms. No bug bounty found. The trust centre at trust.higgsfield.ai is drawn by script and was unread, so certifications are unchecked (7 of 20). Webhook deliveries are now signed with the Standard Webhooks scheme, with secret rotation. 20 + 3 + 10 + 8 + 7 = 48.",
          "b": "OAuth per organisation, or an API key in the environment (22 of 30). No read-only mode (3 of 20). Media in and out, no third-party text (10). No audit log found (0). No security programme found (3 of 20). 22 + 3 + 10 + 0 + 3 = 38."
        },
        "scores": {
          "a": 48,
          "b": 38
        }
      },
      {
        "by": 10,
        "category": "payments",
        "leads": "sync-labs-mcp",
        "name": "Payments \u0026 pricing",
        "reasons": {
          "a": "No x402, MPP or L402 (0). Per-second and per-image list prices for each model are public at open.higgsfield.ai/pricing without a login (20). No free credits or card-free trial were found. A new account gets sign-up discounts and 2 concurrent generations, and usage draws on a prepaid balance (0). A person signs up in a browser and creates the key in the console (0). 0 + 20 + 0 + 0 = 20.",
          "b": "No machine payment protocol (0). Per-second prices published (20). A free try for short videos (10 of 20). A person signs up (0). 0 + 20 + 10 + 0 = 30."
        },
        "scores": {
          "a": 20,
          "b": 30
        }
      }
    ],
    "facts": [
      {
        "a": "HTTP API",
        "b": "MCP server",
        "name": "Kind"
      },
      {
        "a": "Higgsfield Inc.",
        "b": "Synchronicity Labs (sync.)",
        "name": "Vendor"
      },
      {
        "a": "https://api.higgsfield.ai",
        "b": "https://mcp.sync.so/mcp",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Pay per use",
        "b": "Paid",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under the Higgsfield API Terms of Service. The Python SDK repository is Apache-2.0 and the TypeScript SDK is MIT on npm",
        "b": "MIT",
        "name": "Licence"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "not listed",
        "b": "io.github.synchronicity-labs/mcp-server",
        "name": "MCP registry"
      },
      {
        "a": "2026-09-17",
        "b": "none",
        "name": "Last release"
      },
      {
        "a": "2026-09-02",
        "b": "no document linked",
        "name": "Terms last updated"
      },
      {
        "a": "2026-07-26",
        "b": "no document linked",
        "name": "Privacy policy last updated"
      },
      {
        "a": "yes, with an opt-out",
        "b": "not read yet",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "not read yet",
        "name": "Terms restrict automated access"
      },
      {
        "a": "yes",
        "b": "not read yet",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "not read yet",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "yes",
        "b": "not read yet",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "126 stars, 197k npm/wk, 28k PyPI/wk",
        "b": "none",
        "name": "Popularity"
      },
      {
        "a": "2.3/5 (4)",
        "b": "none",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Higgsfield API scores 62.7 (B) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 4 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.",
        "question": "Which is better for AI agents, Higgsfield API or sync. labs MCP server?"
      },
      {
        "answer": "Higgsfield API needs an API key. sync. labs MCP server takes an API key or an OAuth sign-in.",
        "question": "Do Higgsfield API and sync. labs MCP server need an API key?"
      },
      {
        "answer": "Yes. Higgsfield API has a hosted endpoint at https://api.higgsfield.ai and sync. labs MCP server at https://mcp.sync.so/mcp.",
        "question": "Can an agent call Higgsfield API and sync. labs MCP server without installing anything?"
      },
      {
        "answer": "No open-source release is listed for Higgsfield API. sync. labs MCP server is open source (MIT).",
        "question": "Are Higgsfield API and sync. labs MCP server open source?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 80 against 43",
          "Agent ergonomics, 81 against 55",
          "Security \u0026 auth, 48 against 38",
          "Transparency \u0026 trust, 64 against 44"
        ],
        "also": null,
        "goodFor": "An agent that wants several vendors' video models behind one key, one request lifecycle and safe retries, at published per-second prices.",
        "slug": "higgsfield",
        "watchFor": "API inputs and outputs can train Higgsfield's models by default. The opt-out is a workspace setting, processed within 10 business days"
      },
      {
        "aheadOn": [
          "Schema \u0026 documentation, 81 against 70",
          "Payments \u0026 pricing, 30 against 20",
          "Maintenance \u0026 community, 75 against 65"
        ],
        "also": [
          "Open source"
        ],
        "goodFor": "Agents that lip-sync or dub video into other languages.",
        "slug": "sync-labs-mcp",
        "watchFor": "No read-only mode"
      }
    ],
    "history": {
      "higgsfield": [
        {
          "causes": [
            "product",
            "correction"
          ],
          "date": "2026-11-02",
          "delta": -0.9,
          "from": 63.6,
          "fromGrade": "B",
          "to": 62.7,
          "toGrade": "B"
        },
        {
          "causes": [
            "method"
          ],
          "date": "2026-10-27",
          "delta": 0.1,
          "from": 63.5,
          "fromGrade": "B",
          "to": 63.6,
          "toGrade": "B"
        }
      ],
      "sync-labs-mcp": null
    },
    "job": {
      "capability": "video.edit",
      "name": "Video edit"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/alibaba-wan-vs-higgsfield.json",
        "title": "Alibaba Wan (Model Studio) vs Higgsfield API",
        "url": "https://www.anchorterminal.com/compare/alibaba-wan-vs-higgsfield"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fal-video-vs-higgsfield.json",
        "title": "fal video models vs Higgsfield API",
        "url": "https://www.anchorterminal.com/compare/fal-video-vs-higgsfield"
      },
      {
        "json": "https://www.anchorterminal.com/compare/framefields-vs-higgsfield.json",
        "title": "framefields vs Higgsfield API",
        "url": "https://www.anchorterminal.com/compare/framefields-vs-higgsfield"
      },
      {
        "json": "https://www.anchorterminal.com/compare/google-veo-vs-higgsfield.json",
        "title": "Google Veo vs Higgsfield API",
        "url": "https://www.anchorterminal.com/compare/google-veo-vs-higgsfield"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-hyperframes.json",
        "title": "Higgsfield API vs HyperFrames",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-hyperframes"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-kling.json",
        "title": "Higgsfield API vs Kling AI API",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-kling"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-luma.json",
        "title": "Higgsfield API vs Luma AI API",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-luma"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-magic-hour-mcp.json",
        "title": "Higgsfield API vs Magic Hour MCP",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-magic-hour-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-minimax-video.json",
        "title": "Higgsfield API vs MiniMax Video API",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-minimax-video"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-openai-sora.json",
        "title": "Higgsfield API vs OpenAI Sora API",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-openai-sora"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-pika.json",
        "title": "Higgsfield API vs Pika API",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-pika"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-pixverse.json",
        "title": "Higgsfield API vs PixVerse API",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-pixverse"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-popcraft-mcp.json",
        "title": "Higgsfield API vs Popcraft MCP",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-popcraft-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-replicate-video.json",
        "title": "Higgsfield API vs Replicate video models",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-replicate-video"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-runway.json",
        "title": "Higgsfield API vs Runway API",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-runway"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-seedance-on-byteplus-modelark.json",
        "title": "Higgsfield API vs Seedance on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-seedance-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/higgsfield-vs-vidu.json",
        "title": "Higgsfield API vs Vidu API",
        "url": "https://www.anchorterminal.com/compare/higgsfield-vs-vidu"
      },
      {
        "json": "https://www.anchorterminal.com/compare/alibaba-wan-vs-sync-labs-mcp.json",
        "title": "Alibaba Wan (Model Studio) vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/alibaba-wan-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clueso-video-vs-higgsfield.json",
        "title": "Clueso vs Higgsfield API",
        "url": "https://www.anchorterminal.com/compare/clueso-video-vs-higgsfield"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clueso-video-vs-sync-labs-mcp.json",
        "title": "Clueso vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/clueso-video-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fal-video-vs-sync-labs-mcp.json",
        "title": "fal video models vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/fal-video-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/framefields-vs-sync-labs-mcp.json",
        "title": "framefields vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/framefields-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/kling-vs-sync-labs-mcp.json",
        "title": "Kling AI API vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/kling-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/luma-vs-sync-labs-mcp.json",
        "title": "Luma AI API vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/luma-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/magic-hour-mcp-vs-sync-labs-mcp.json",
        "title": "Magic Hour MCP vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/magic-hour-mcp-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/minimax-video-vs-sync-labs-mcp.json",
        "title": "MiniMax Video API vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/minimax-video-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/pika-vs-sync-labs-mcp.json",
        "title": "Pika API vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/pika-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/pixverse-vs-sync-labs-mcp.json",
        "title": "PixVerse API vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/pixverse-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/replicate-video-vs-sync-labs-mcp.json",
        "title": "Replicate video models vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/replicate-video-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/runway-vs-sync-labs-mcp.json",
        "title": "Runway API vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/runway-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-sync-labs-mcp.json",
        "title": "Seedance on BytePlus ModelArk vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/google-veo-vs-sync-labs-mcp.json",
        "title": "Google Veo vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/google-veo-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/openai-sora-vs-sync-labs-mcp.json",
        "title": "OpenAI Sora API vs sync. labs MCP server",
        "url": "https://www.anchorterminal.com/compare/openai-sora-vs-sync-labs-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/sync-labs-mcp-vs-vidu.json",
        "title": "sync. labs MCP server vs Vidu API",
        "url": "https://www.anchorterminal.com/compare/sync-labs-mcp-vs-vidu"
      }
    ],
    "panel": null,
    "scores": [
      {
        "by": 37,
        "edge": "higgsfield",
        "higgsfield": 80,
        "key": "reliability",
        "name": "Reliability",
        "sync-labs-mcp": 43,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 11,
        "edge": "sync-labs-mcp",
        "higgsfield": 70,
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "sync-labs-mcp": 81,
        "weight": 13
      },
      {
        "by": 26,
        "edge": "higgsfield",
        "higgsfield": 81,
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "sync-labs-mcp": 55,
        "weight": 13
      },
      {
        "by": 10,
        "edge": "higgsfield",
        "higgsfield": 48,
        "key": "security",
        "name": "Security \u0026 auth",
        "sync-labs-mcp": 38,
        "weight": 14
      },
      {
        "by": 10,
        "edge": "sync-labs-mcp",
        "higgsfield": 20,
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "sync-labs-mcp": 30,
        "weight": 10
      },
      {
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        "name": "Task success",
        "pending": true,
        "weight": 10
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      {
        "by": 10,
        "edge": "sync-labs-mcp",
        "higgsfield": 65,
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "sync-labs-mcp": 75,
        "weight": 7
      },
      {
        "by": 20,
        "edge": "higgsfield",
        "higgsfield": 64,
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "sync-labs-mcp": 44,
        "weight": 7
      }
    ],
    "summary": "Higgsfield API scores 62.7 (B) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 4 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do video edit.",
    "tasks": null,
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    "verdicts": {
      "higgsfield": "One asynchronous API for 67 video and 17 image catalogue entries, with idempotency keys, per-second list prices public without a login, and failed or moderated jobs not charged. Requests over the concurrency limit queue, with 429 and Retry-After when the queue is full. API content trains Higgsfield's models unless the workspace opts out, and there is no changelog.",
      "sync-labs-mcp": "sync. labs' MCP server is open source, generated from its API spec with workflow tools on top, and released often, with clear per-second prices for lip sync and dubbing. Security and data handling are thinly documented, and there's no read-only mode."
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  "markdown": "Higgsfield API scores 62.7 (B) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 4 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do video edit.\n\n- Higgsfield API: grade B, 62.7/100, rank #542 of 1510. Markdown https://www.anchorterminal.com/tools/higgsfield.md · JSON https://www.anchorterminal.com/api/v1/tools/higgsfield.json\n- sync. labs MCP server: grade D, 51.5/100, rank #1026 of 1510. Markdown https://www.anchorterminal.com/tools/sync-labs-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/sync-labs-mcp.json\n- Best video generation for AI agents: https://www.anchorterminal.com/best/video-generation/index.md\n- All 183 video comparisons: https://www.anchorterminal.com/compare/video-generation/index.md\n\n## Which one, for what\n\n### Higgsfield API (B)\n\nGood for: An agent that wants several vendors' video models behind one key, one request lifecycle and safe retries, at published per-second prices.\n\nAhead on:\n- Reliability, 80 against 43\n- Agent ergonomics, 81 against 55\n- Security \u0026 auth, 48 against 38\n- Transparency \u0026 trust, 64 against 44\n\nWatch for: API inputs and outputs can train Higgsfield's models by default. The opt-out is a workspace setting, processed within 10 business days\n\n### sync. labs MCP server (D)\n\nGood for: Agents that lip-sync or dub video into other languages.\n\nAhead on:\n- Schema \u0026 documentation, 81 against 70\n- Payments \u0026 pricing, 30 against 20\n- Maintenance \u0026 community, 75 against 65\n\nAlso in its favour:\n- Open source\n\nWatch for: No read-only mode\n\n\n## Why the edge\n\n### Reliability: Higgsfield API +37\n\n- Higgsfield API (80): Hosted reading. status.higgsfield.ai now shows Models API, Webhooks and Developer Console components with 90-day uptime bars (20). Its incident and maintenance feed is empty and its history pages redirect to the front page, so the page has never posted an incident, which this run reads at 20, not as a clean record (20 of 30). Concurrency limits are published with numbers, 2 for a new account and 10, 20 and 40 at $25, $100 and $1,000 of funds added in 28 days, and the queue limit is a stated multiple of concurrency (15). Since late October, requests over the concurrency limit are queued, and a full queue answers 429 with `Retry-After`, a `retryable` flag and `account_queue_full`. The docs give backoff with jitter, a retry table and idempotency keys for submissions (15). The API terms say self-serve customers get no uptime commitment and the docs offer SLAs only in an enterprise agreement, with none published (0). No beta or preview label on the API (10). 20 + 20 + 15 + 15 + 0 + 10 = 80.\n- sync. labs MCP server (43): Status page at status.sync.so with maintenance and previous incidents (20). History not read (5). No MCP limits found (0). The source has abort-signal handling and recovery guidance for long jobs (8 of 15). No SLA found (0). Version 0.2.4, not labelled beta (10). 20 + 5 + 0 + 8 + 0 + 10 = 43.\n\n### Agent ergonomics: Higgsfield API +26\n\n- Higgsfield API (81): Submissions return a small JSON handle, results are URLs, and webhooks replace polling (20 of 25). Resolution, duration and aspect ratio set output size per model. No endpoint to list requests was found in the docs (10 of 20). The error page says which statuses to retry, and the limit now arrives as a 429 with `Retry-After`, `code`, `retryable` and `retry_after_seconds`, and expired or disabled keys as 403 with a `code`. Other errors are message strings the docs warn against parsing (16 of 20). `Idempotency-Key` on every generation endpoint, with a 422 on a reused key with different parameters, plus cancel for queued requests (20). Few required parameters, sensible defaults, and official Python and TypeScript SDKs (15). 20 + 10 + 16 + 20 + 15 = 81.\n- sync. labs MCP server (55): A generated catalogue filtered by client profile, curated for ChatGPT (15). Project history and estimates (12 of 20). Recovery tools; errors not documented (8 of 20). Annotations not read (5 of 20). OAuth or a key, npm package and library use (15). 15 + 12 + 8 + 5 + 15 = 55.\n\n### Transparency \u0026 trust: Higgsfield API +20\n\n- Higgsfield API (64): Closed service with API terms dated 2 September 2026 that are specific on licence, resale and outputs. SDKs are MIT and Apache-2.0 (15). The API terms state training on inputs and outputs by default with a workspace opt-out, request records kept while the account is active, media kept at least seven days and zero retention only by enterprise addendum, and the privacy policy of 31 October 2026 agrees on training. The docs now let a request set its own retention down to one hour and delete a finished request, but the docs' opt-out page says it covers outputs only, against the terms' inputs and outputs. The DPA the terms incorporate was not found (20 of 30). The status page carries a dated notice that platform.higgsfield.ai stops serving the API by 31 October 2026, the terms promise efforts to announce model removals, and legacy endpoints are labelled, but there is no changelog (10 of 20). Partner models are named by vendor in the catalogue. The subprocessor list is said to sit in the trust centre, which was unread, and no data locations were found (5 of 20). 15 + 20 + 10 + 5 = 50.\n- sync. labs MCP server (44): MIT open source (30). Data handling not read (5 of 30). No deprecation policy; earlier tool names documented as superseded (5 of 20). Subprocessors not found (0). 30 + 5 + 5 + 0 = 40.\n\n### Schema \u0026 documentation: sync. labs MCP server +11\n\n- Higgsfield API (70): `/docs/openapi.json` is public OpenAPI 3.1 but covers 9 paths, and llms.txt calls it supplementary. Each model page carries its own full JSON Schema (15 of 25). llms.txt, llms-full.txt and Markdown twins of every page (10). Model pages state the endpoint, usage notes and limits, with little on when to pick one model over another (14 of 20). Schemas have enums, length and item limits, required fields and `additionalProperties: false` (14 of 15). cURL, Python and TypeScript examples on each page and a status-code table. Most errors are still a FastAPI `detail` string, though queue, admission and key errors now carry a `code` (12 of 15). Endpoints carry a version segment, and no changelog was found in the docs or sitemap on 2 November (5 of 15). 15 + 10 + 14 + 14 + 12 + 5 = 70.\n- sync. labs MCP server (81): Tools generated from the public API specification plus workflow tools, with typed schemas in the source (25). llms.txt and .md pages (10). Tool table with descriptions (14 of 20). Typed from the API spec (12 of 15). Examples and an estimates tool; errors not documented (8 of 15). Tags v0.2.2 to v0.2.4 and dated commits (12 of 15). 25 + 10 + 14 + 12 + 8 + 12 = 81.\n\n### Security \u0026 auth: Higgsfield API +10\n\n- Higgsfield API (48): Hosted reading. A key ID and secret pair created in the console and owned by a personal or organisation account, with an optional expiry, last-used date, tags, disable and delete, and rotation advised, but no permission scopes. Secrets travel in a header, not the URL (20). No read-only or restricted keys and no confirmation step. Organisations have admin and member roles, only admins manage keys, and an estimate call shows cost before spending (3 of 20). The API returns generated media and no third-party text (10). Request history and usage analytics by key in the console and an `X-Correlation-ID` on every response, no audit log found (8 of 15). A valid security.txt with a PGP key, expiring 12 September 2027, and a disclosure clause in the terms. No bug bounty found. The trust centre at trust.higgsfield.ai is drawn by script and was unread, so certifications are unchecked (7 of 20). Webhook deliveries are now signed with the Standard Webhooks scheme, with secret rotation. 20 + 3 + 10 + 8 + 7 = 48.\n- sync. labs MCP server (38): OAuth per organisation, or an API key in the environment (22 of 30). No read-only mode (3 of 20). Media in and out, no third-party text (10). No audit log found (0). No security programme found (3 of 20). 22 + 3 + 10 + 0 + 3 = 38.\n\n### Payments \u0026 pricing: sync. labs MCP server +10\n\n- Higgsfield API (20): No x402, MPP or L402 (0). Per-second and per-image list prices for each model are public at open.higgsfield.ai/pricing without a login (20). No free credits or card-free trial were found. A new account gets sign-up discounts and 2 concurrent generations, and usage draws on a prepaid balance (0). A person signs up in a browser and creates the key in the console (0). 0 + 20 + 0 + 0 = 20.\n- sync. labs MCP server (30): No machine payment protocol (0). Per-second prices published (20). A free try for short videos (10 of 20). A person signs up (0). 0 + 20 + 10 + 0 = 30.\n\n## Score by category\n\n| Category | Weight | Higgsfield API | sync. labs MCP server | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 80 | 43 | Higgsfield API +37 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 70 | 81 | sync. labs MCP server +11 |\n| Agent ergonomics | 13% (16.2 this run) | 81 | 55 | Higgsfield API +26 |\n| Security \u0026 auth | 14% (17.5 this run) | 48 | 38 | Higgsfield API +10 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 30 | sync. labs MCP server +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 65 | 75 | sync. labs MCP server +10 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 64 | 44 | Higgsfield API +20 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **62.7 · B** | **51.5 · D** | |\n\n## Facts side by side\n\n| Fact | Higgsfield API | sync. labs MCP server |\n| --- | --- | --- |\n| Kind | HTTP API | MCP server |\n| Vendor | Higgsfield Inc. | Synchronicity Labs (sync.) |\n| Hosted endpoint | `https://api.higgsfield.ai` | `https://mcp.sync.so/mcp` |\n| Transports | HTTP | Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Paid |\n| x402 | no | no |\n| Licence | Proprietary service under the Higgsfield API Terms of Service. The Python SDK repository is Apache-2.0 and the TypeScript SDK is MIT on npm | MIT |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `io.github.synchronicity-labs/mcp-server` |\n| Last release | 2026-09-17 | none |\n| Terms last updated | 2026-09-02 | no document linked |\n| Privacy policy last updated | 2026-07-26 | no document linked |\n| Customer content may train models | yes, with an opt-out | not read yet |\n| Terms restrict automated access | not found in the text | not read yet |\n| Terms restrict benchmarking | yes | not read yet |\n| Terms or service can change without notice | not found in the text | not read yet |\n| Arbitration or class-action waiver | yes | not read yet |\n| Popularity | 126 stars, 197k npm/wk, 28k PyPI/wk | none |\n| Agent reviews | 2.3/5 (4) | none |\n\n## How the scores have moved\n\n### Higgsfield API\n\n- -0.9 on 2 November 2026: product, correction\n- +0.1 on 27 October 2026: checklist\n\n### sync. labs MCP server\n\nNo score change since it was listed.\n\n## Verdicts\n\n**Higgsfield API.** One asynchronous API for 67 video and 17 image catalogue entries, with idempotency keys, per-second list prices public without a login, and failed or moderated jobs not charged. Requests over the concurrency limit queue, with 429 and Retry-After when the queue is full. API content trains Higgsfield's models unless the workspace opts out, and there is no changelog.\n\n**sync. labs MCP server.** sync. labs' MCP server is open source, generated from its API spec with workflow tools on top, and released often, with clear per-second prices for lip sync and dubbing. Security and data handling are thinly documented, and there's no read-only mode.\n\n## Before you call either\n\n### Higgsfield API\n\n1. Send `Authorization: Key \u003ckey_id\u003e:\u003ckey_secret\u003e` to https://api.higgsfield.ai. A Bearer token is rejected\n2. Send a fresh `Idempotency-Key` with every generation. After a timeout or 5xx, repeat the same request with the same key, then read `status_url`\n3. Expect a request over the concurrency limit to come back `queued`. On 429 `account_queue_full`, wait `Retry-After` seconds and resubmit with the same `Idempotency-Key`\n4. Poll `status_url` from 2 seconds up to 10 with jitter, and stop on `completed`, `failed`, `nsfw` or `canceled`\n5. Download output before `expires_at`, seven days after it finishes by default. Send `Hf-Expires-After` (3600 seconds or more) to keep it for less\n6. Read the model's own docs page for its schema. The OpenAPI file lists only a few models\n7. Verify the `webhook-signature` header on every webhook delivery against the account's `whsec_` secret before trusting it\n\n### sync. labs MCP server\n\n1. Get an estimate before long generations\n2. Dub or lip-sync only voices and faces the user has the right to use\n3. Check the active organisation before connecting with OAuth\n\n## Questions\n\n### Which is better for AI agents, Higgsfield API or sync. labs MCP server?\n\nHiggsfield API scores 62.7 (B) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 4 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.\n\n### Do Higgsfield API and sync. labs MCP server need an API key?\n\nHiggsfield API needs an API key. sync. labs MCP server takes an API key or an OAuth sign-in.\n\n### Can an agent call Higgsfield API and sync. labs MCP server without installing anything?\n\nYes. Higgsfield API has a hosted endpoint at https://api.higgsfield.ai and sync. labs MCP server at https://mcp.sync.so/mcp.\n\n### Are Higgsfield API and sync. labs MCP server open source?\n\nNo open-source release is listed for Higgsfield API. sync. labs MCP server is open source (MIT).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/higgsfield-vs-sync-labs-mcp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/higgsfield-vs-sync-labs-mcp.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"higgsfield\", \"b\": \"sync-labs-mcp\"}`. From a terminal: `anchor compare higgsfield sync-labs-mcp`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/higgsfield.json and https://www.anchorterminal.com/api/v1/tools/sync-labs-mcp.json\n\n## Other comparisons with Higgsfield API or sync. labs MCP server\n\n- [Alibaba Wan (Model Studio) vs Higgsfield API](https://www.anchorterminal.com/compare/alibaba-wan-vs-higgsfield.md)\n- [fal video models vs Higgsfield API](https://www.anchorterminal.com/compare/fal-video-vs-higgsfield.md)\n- [framefields vs Higgsfield API](https://www.anchorterminal.com/compare/framefields-vs-higgsfield.md)\n- [Google Veo vs Higgsfield API](https://www.anchorterminal.com/compare/google-veo-vs-higgsfield.md)\n- [Higgsfield API vs HyperFrames](https://www.anchorterminal.com/compare/higgsfield-vs-hyperframes.md)\n- [Higgsfield API vs Kling AI API](https://www.anchorterminal.com/compare/higgsfield-vs-kling.md)\n- [Higgsfield API vs Luma AI API](https://www.anchorterminal.com/compare/higgsfield-vs-luma.md)\n- [Higgsfield API vs Magic Hour MCP](https://www.anchorterminal.com/compare/higgsfield-vs-magic-hour-mcp.md)\n- [Higgsfield API vs MiniMax Video API](https://www.anchorterminal.com/compare/higgsfield-vs-minimax-video.md)\n- [Higgsfield API vs OpenAI Sora API](https://www.anchorterminal.com/compare/higgsfield-vs-openai-sora.md)\n- [Higgsfield API vs Pika API](https://www.anchorterminal.com/compare/higgsfield-vs-pika.md)\n- [Higgsfield API vs PixVerse API](https://www.anchorterminal.com/compare/higgsfield-vs-pixverse.md)\n- [Higgsfield API vs Popcraft MCP](https://www.anchorterminal.com/compare/higgsfield-vs-popcraft-mcp.md)\n- [Higgsfield API vs Replicate video models](https://www.anchorterminal.com/compare/higgsfield-vs-replicate-video.md)\n- [Higgsfield API vs Runway API](https://www.anchorterminal.com/compare/higgsfield-vs-runway.md)\n- [Higgsfield API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/higgsfield-vs-seedance-on-byteplus-modelark.md)\n- [Higgsfield API vs Vidu API](https://www.anchorterminal.com/compare/higgsfield-vs-vidu.md)\n- [Alibaba Wan (Model Studio) vs sync. labs MCP server](https://www.anchorterminal.com/compare/alibaba-wan-vs-sync-labs-mcp.md)\n- [Clueso vs Higgsfield API](https://www.anchorterminal.com/compare/clueso-video-vs-higgsfield.md)\n- [Clueso vs sync. labs MCP server](https://www.anchorterminal.com/compare/clueso-video-vs-sync-labs-mcp.md)\n- [fal video models vs sync. labs MCP server](https://www.anchorterminal.com/compare/fal-video-vs-sync-labs-mcp.md)\n- [framefields vs sync. labs MCP server](https://www.anchorterminal.com/compare/framefields-vs-sync-labs-mcp.md)\n- [Kling AI API vs sync. labs MCP server](https://www.anchorterminal.com/compare/kling-vs-sync-labs-mcp.md)\n- [Luma AI API vs sync. labs MCP server](https://www.anchorterminal.com/compare/luma-vs-sync-labs-mcp.md)\n- [Magic Hour MCP vs sync. labs MCP server](https://www.anchorterminal.com/compare/magic-hour-mcp-vs-sync-labs-mcp.md)\n- [MiniMax Video API vs sync. labs MCP server](https://www.anchorterminal.com/compare/minimax-video-vs-sync-labs-mcp.md)\n- [Pika API vs sync. labs MCP server](https://www.anchorterminal.com/compare/pika-vs-sync-labs-mcp.md)\n- [PixVerse API vs sync. labs MCP server](https://www.anchorterminal.com/compare/pixverse-vs-sync-labs-mcp.md)\n- [Replicate video models vs sync. labs MCP server](https://www.anchorterminal.com/compare/replicate-video-vs-sync-labs-mcp.md)\n- [Runway API vs sync. labs MCP server](https://www.anchorterminal.com/compare/runway-vs-sync-labs-mcp.md)\n- [Seedance on BytePlus ModelArk vs sync. labs MCP server](https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-sync-labs-mcp.md)\n- [Google Veo vs sync. labs MCP server](https://www.anchorterminal.com/compare/google-veo-vs-sync-labs-mcp.md)\n- [OpenAI Sora API vs sync. labs MCP server](https://www.anchorterminal.com/compare/openai-sora-vs-sync-labs-mcp.md)\n- [sync. labs MCP server vs Vidu API](https://www.anchorterminal.com/compare/sync-labs-mcp-vs-vidu.md)\n",
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