{
  "data": {
    "a": {
      "slug": "late",
      "name": "Zernio (formerly Late) API + MCP",
      "vendor": "Zernio",
      "vendorUrl": "https://zernio.com",
      "kind": "http-api",
      "category": "social-media",
      "summary": "Social media and messaging API (formerly Late at getlate.dev, renamed Zernio in 2026) for 16 channels plus ads, inbox, SMS and WhatsApp.",
      "url": "https://www.anchorterminal.com/tools/late",
      "markdownUrl": "https://www.anchorterminal.com/tools/late.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/late.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/late.json",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://zernio.com/api/v1",
      "packages": [
        {
          "registry": "npm",
          "name": "@zernio/node"
        },
        {
          "registry": "pypi",
          "name": "zernio-sdk"
        }
      ],
      "auth": "mixed",
      "authNotes": "API key as a Bearer token. The hosted MCP accepts OAuth 2.1 with PKCE and dynamic client registration, or the API key as a Bearer header. A local stdio MCP ships in the Python SDK (uvx --from zernio-sdk[mcp] zernio-mcp).",
      "pricing": "freemium",
      "pricingNotes": "Billed per connected account each month, no plans. Accounts 1 and 2 free with no card, 3 to 10 at $6 each, 11 to 100 at $3, 101 and up at $1 (10 accounts cost $48). 10,000 inbox messages a month free, then $1 per 10,000. X API calls are passed through at $0.005 to $0.20 a request. SMS from $0.008 a message in the US (https://zernio.com/pricing).",
      "priceSummary": "$6 / mo",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402 in docs, llms.txt or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 45849,
        "pypiWeekly": 44099,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.zernio.com",
      "llmsTxt": "https://docs.zernio.com/llms.txt",
      "openapi": "https://zernio.com/openapi.yaml",
      "registryName": "com.zernio/zernio",
      "capabilities": [
        "social.post",
        "social.schedule",
        "social.analytics",
        "social.comments",
        "social.media-upload"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "no-card",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "webhooks",
        "sms",
        "whatsapp"
      ],
      "lastRelease": "2026-10-01",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 67.5,
        "grade": "B",
        "agentReady": false,
        "rank": 139,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 1,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 88,
          "maintenance": 87,
          "payments": 40,
          "reliability": 80,
          "schema": 83,
          "security": 57,
          "transparency": 59
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": -4,
        "negativeNotes": [
          "2026-09-29 to 2026-10-01. The changelog marks several changes BREAKING on the day they shipped, with no notice period. Timestamps without an offset now follow the profile timezone instead of UTC (29 September), accountId is required to edit or unpublish a multi-account post (30 September), and LinkedIn multi-account connect needs selections instead of accountType (1 October). We count the label as disclosure but not notice. -4 (https://docs.zernio.com/changelog)"
        ],
        "verdict": "Idempotency-Key on post creation and other writes, kept 24 hours, with an Idempotent-Replayed header on replays. Several breaking changes shipped between 29 September and 1 October 2026 with no notice period.",
        "strengths": [
          "Idempotency-Key on post creation and other writes, kept 24 hours, with an Idempotent-Replayed header on replays",
          "OpenAPI 3.1 spec (API version 1.194.0) and a Node SDK regenerated from it several times a day",
          "Hosted MCP with OAuth scopes, tool annotations and search_tools for the long tail",
          "Restricted keys created through POST /v1/api-keys with any of ten resource groups switched off",
          "2 accounts free with no card, then $6, $3 or $1 an account"
        ],
        "weaknesses": [
          "Several breaking changes shipped between 29 September and 1 October 2026 with no notice period",
          "Reddit and TikTok posting budgets are shared across all Zernio customers",
          "SDKs are pre-1.0 (0.2.1056) and release many times a day",
          "No security.txt, no subprocessor list and no DPA linked from the privacy policy",
          "Renamed from Late in 2026, so docs and packages exist under both names"
        ],
        "agentNotes": [
          "Send an Idempotency-Key (a fresh UUID per post) on POST /v1/posts and reuse it only on a retry",
          "Give timestamps an explicit offset, because times without one now follow the profile timezone rather than UTC",
          "Pass accountId when editing or unpublishing a post that targets several accounts",
          "Wait Retry-After on 429. Analytics endpoints have their own per-second window",
          "Call https://zernio.com/api/v1, not the old getlate.dev base, and pin the SDK version"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 4,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 67.5
          }
        ],
        "editorialScores": {
          "ergonomics": 88,
          "maintenance": 87,
          "payments": 40,
          "reliability": 80,
          "schema": 83,
          "security": 57,
          "transparency": 40
        },
        "provenanceScore": 78
      },
      "connect": {
        "http": "curl https://zernio.com/api/v1/accounts -H \"Authorization: Bearer $ZERNIO_API_KEY\"",
        "claudeCode": "claude mcp add --transport http zernio https://mcp.zernio.com/mcp",
        "config": {
          "mcpServers": {
            "zernio": {
              "args": [
                "--from",
                "zernio-sdk[mcp]",
                "zernio-mcp"
              ],
              "command": "uvx",
              "env": {
                "ZERNIO_API_KEY": "${ZERNIO_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/social.post",
        "tool": "https://letme.dev/late"
      },
      "area": "communication",
      "unitPrices": [
        {
          "item": "Connected account (3 to 10)",
          "unit": "month",
          "usd": 6,
          "note": "per account, first 2 free"
        },
        {
          "item": "Connected account (11 to 100)",
          "unit": "month",
          "usd": 3,
          "note": "per account"
        },
        {
          "item": "Connected account (101 and up)",
          "unit": "month",
          "usd": 1,
          "note": "per account"
        },
        {
          "item": "SMS to the US",
          "unit": "message",
          "usd": 0.008
        }
      ],
      "provenance": {
        "legalEntity": "ZERNIO SOFTWARE SL",
        "domain": "zernio.com",
        "domainRegistered": "2025-08-14",
        "endpointOnVendorDomain": true,
        "terms": "https://zernio.com/tos",
        "privacy": "https://zernio.com/privacy-policy",
        "statusPage": "https://www.zernio-status.com",
        "changelog": "https://docs.zernio.com/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Formerly Late at getlate.dev (registered 2025-06-06), which now redirects to zernio.com",
          "Rebrand date not published. @zernio/node first appeared on npm on 2026-03-17",
          "npm weekly counts @zernio/node only. The legacy @getlatedev/node had 29,912 and late-sdk 18,958 more"
        ],
        "score": 78
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/late.json",
      "live": {
        "slug": "late",
        "probe": {
          "target": "https://zernio.com/api/v1",
          "method": "get",
          "lastAt": "2026-10-05T02:29:57.780425382Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 148,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 59,
          "p95ms24h": 165,
          "samples24h": 273,
          "samples30d": 1131,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 29,
              "ok": 29
            }
          ]
        },
        "vendorStatus": {
          "page": "https://www.zernio-status.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:11.998588022Z"
        },
        "versions": [
          {
            "registry": "mcp-registry",
            "name": "com.zernio/zernio",
            "version": "1.0.0",
            "seenAt": "2026-10-04T23:42:40.113054682Z"
          },
          {
            "registry": "npm",
            "name": "@zernio/node",
            "version": "0.2.1080",
            "seenAt": "2026-10-04T16:31:32.9412192Z"
          },
          {
            "registry": "pypi",
            "name": "zernio-sdk",
            "version": "1.4.1093",
            "released": "2026-10-04",
            "seenAt": "2026-10-04T16:31:33.370324025Z"
          }
        ],
        "npmWeekly": 50936,
        "pypiWeekly": 39221,
        "securityTxt": {
          "url": "https://zernio.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:16:04.939436035Z"
        },
        "llmsTxt": {
          "url": "https://docs.zernio.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:56.630637458Z"
        },
        "domain": {
          "domain": "zernio.com",
          "registered": "2025-08-14",
          "source": "https://rdap.verisign.com/com/v1/domain/zernio.com",
          "checkedAt": "2026-10-04T13:05:28.738999562Z"
        },
        "pages": [
          {
            "url": "https://docs.zernio.com/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:19.886171541Z",
            "changedAt": "2026-10-04T15:44:19.886171541Z",
            "fingerprint": "3d44f3e3d275"
          },
          {
            "url": "https://zernio.com/rebrand",
            "kind": "deprecations",
            "status": 200,
            "checkedAt": "2026-10-04T15:53:12.361720232Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "f1c88a2ba666"
          },
          {
            "url": "https://zernio.com/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:53:07.96997682Z",
            "changedAt": "2026-10-02T15:29:11.484680525Z",
            "fingerprint": "9bd203560edb"
          },
          {
            "url": "https://zernio.com/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:53:10.251640706Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "40780a4b4335"
          },
          {
            "url": "https://zernio.com/tos",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:53:14.380799679Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "96d6ae4a3478"
          }
        ],
        "updatedAt": "2026-10-05T02:29:57.780425382Z"
      }
    },
    "b": {
      "slug": "mixpost",
      "name": "Mixpost API + MCP",
      "vendor": "Mixpost (Inovector)",
      "vendorUrl": "https://mixpost.app",
      "kind": "http-api",
      "category": "social-media",
      "summary": "Self-hosted Laravel package for social scheduling, with a REST API and a built-in MCP server on your own instance.",
      "url": "https://www.anchorterminal.com/tools/mixpost",
      "markdownUrl": "https://www.anchorterminal.com/tools/mixpost.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mixpost.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mixpost.json",
      "repo": "https://github.com/inovector/mixpost",
      "license": "proprietary (Pro and Enterprise, which carry the API and MCP), MIT (Lite)",
      "transports": [
        "http",
        "streamable-http"
      ],
      "packages": [],
      "auth": "pat",
      "authNotes": "Personal access token created under Access Tokens in the dashboard, sent as a Bearer header to both the REST API and the MCP endpoint. Endpoints live on your own domain under /api and /mcp.",
      "pricing": "paid",
      "pricingNotes": "Lite is free and MIT-licensed but has no API, MCP or webhooks, and publishes only to Facebook Pages, X and Mastodon. Pro is $299 one-off per domain with a year of updates and includes the API, MCP and webhooks. Enterprise is $1,199 one-off and adds billing and customer management for running your own SaaS. Both keep a perpetual fallback licence. Mixpost Cloud is hosted Pro billed per workspace, with prices not shown in the fetched page (https://mixpost.app/pricing).",
      "priceSummary": "Paid",
      "where": "local",
      "x402": {
        "level": "no",
        "evidence": "No x402 or per-call payment in the docs, OpenAPI spec or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 30,
      "popularity": {
        "githubStars": 3747,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.mixpost.app/api/",
      "openapi": "https://docs.mixpost.app/assets/files/mixpost-6945bca1a1adae71a614b0e83e1dc5bc.yaml",
      "capabilities": [
        "social.post",
        "social.schedule",
        "social.analytics",
        "social.media-upload"
      ],
      "tags": [
        "open-source",
        "local",
        "self-hosted",
        "hosted",
        "mcp",
        "openapi",
        "webhooks"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 49.7,
        "grade": "D",
        "agentReady": false,
        "rank": 368,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 6,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 53,
          "maintenance": 63,
          "payments": 10,
          "reliability": 70,
          "schema": 76,
          "security": 43,
          "transparency": 51
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": -4,
        "negativeNotes": [
          "2026-02-24. Issue #194 reports path traversal in the system log download and clear endpoints of Mixpost Lite. On 1 October 2026 the main branch still builds the path as the log directory plus the user-supplied filename (src/Support/SystemLogs.php, getFilePath), so a signed-in user can read or truncate files outside the logs folder. No fix or advisory. We couldn't check whether Pro shares the code. -4 (https://github.com/inovector/mixpost/issues/194)"
        ],
        "verdict": "One-off $299 licence with unlimited accounts and members, and a perpetual fallback licence. No API or MCP in the free Lite edition.",
        "strengths": [
          "One-off $299 licence with unlimited accounts and members, and a perpetual fallback licence",
          "OpenAPI 3.1 spec and a 30-tool MCP server, with every tool labelled read, write or destructive in the docs",
          "Data and tokens stay on your own infrastructure",
          "Four Pro releases between 26 and 30 September 2026, with v7.0.0 flagged as breaking",
          "Tokens can expire after 7 to 90 days or on a set date, and a Viewer-role token can only read"
        ],
        "weaknesses": [
          "No API or MCP in the free Lite edition",
          "Tokens carry the full authority of the user who created them, with no scopes",
          "Public path-traversal (24 February 2026) and XSS (17 June 2026) reports on the Lite repo, still open with no advisory",
          "No rate limiting of its own, no idempotency keys and no status page for Cloud",
          "Self-hosting needs your own developer app approved by each network"
        ],
        "agentNotes": [
          "Call list-workspaces first. Workspace endpoints sit under /api/{workspaceUuid}",
          "Check MIXPOST_CORE_PATH. It's empty by default from Pro v7 but defaults to mixpost in older versions and Lite",
          "Create the token as a Viewer-role user when the agent only needs to read",
          "Use unschedule-post rather than delete-post when a person wants a post pulled back to draft",
          "Expect HTTP 422 with an errors.limit entry when a Cloud plan limit is hit"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 2,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 49.7
          }
        ],
        "editorialScores": {
          "ergonomics": 53,
          "maintenance": 63,
          "payments": 10,
          "reliability": 70,
          "schema": 76,
          "security": 43,
          "transparency": 45
        },
        "provenanceScore": 57
      },
      "connect": {
        "http": "curl https://$MIXPOST_HOST/api/workspaces -H \"Authorization: Bearer $MIXPOST_TOKEN\" -H \"Accept: application/json\"",
        "claudeCode": "claude mcp add --transport http mixpost https://$MIXPOST_HOST/mcp --header \"Authorization: Bearer $MIXPOST_TOKEN\"",
        "config": {
          "mcpServers": {
            "mixpost": {
              "headers": {
                "Authorization": "Bearer ${MIXPOST_TOKEN}"
              },
              "type": "http",
              "url": "https://example.com/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/social.post",
        "tool": "https://letme.dev/mixpost"
      },
      "area": "communication",
      "provenance": {
        "legalEntity": "INOVECTOR DIGITAL S.R.L.",
        "domain": "mixpost.app",
        "domainRegistered": "2022-07-28",
        "endpointOnVendorDomain": false,
        "terms": "https://mixpost.app/terms-of-use",
        "privacy": "https://mixpost.app/privacy-policy",
        "statusPage": "",
        "changelog": "https://mixpost.app/releases/pro",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "The terms name INOVECTOR DIGITAL S.R.L., registered in the Republic of Moldova with number 1019600028867.",
          "Self-hosted endpoints run on the customer's own domain, not the vendor's."
        ],
        "score": 57
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/mixpost.json",
      "live": {
        "slug": "mixpost",
        "versions": [
          {
            "registry": "github",
            "name": "inovector/mixpost",
            "version": "2.6.0",
            "released": "2026-03-16",
            "seenAt": "2026-10-04T16:33:38.580766527Z"
          }
        ],
        "githubStars": 3772,
        "securityTxt": {
          "url": "https://mixpost.app/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:51.388673574Z"
        },
        "domain": {
          "domain": "mixpost.app",
          "registered": "2022-07-28",
          "source": "https://pubapi.registry.google/rdap/domain/mixpost.app",
          "checkedAt": "2026-10-04T13:07:22.865013141Z"
        },
        "pages": [
          {
            "url": "https://mixpost.app/releases/pro",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:04.861334739Z",
            "changedAt": "2026-10-02T15:22:23.101220068Z",
            "fingerprint": "c7a0d1265083"
          },
          {
            "url": "https://mixpost.app/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:00.515967907Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e225b3aa803d"
          },
          {
            "url": "https://mixpost.app/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:03.05836634Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "ec3136bc16c9"
          },
          {
            "url": "https://mixpost.app/terms-of-use",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:06.991804271Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "2490096400de"
          }
        ],
        "updatedAt": "2026-10-04T16:33:38.580766527Z"
      }
    },
    "summary": "Zernio (formerly Late) API + MCP has a score of 67.5 (B) against Mixpost API + MCP's 49.7 (D). Both do social post. The largest gap is agent ergonomics, 35 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/late-vs-mixpost",
    "json": "https://www.anchorterminal.com/compare/late-vs-mixpost.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/late-vs-mixpost.md",
    "slim": "https://www.anchorterminal.com/compare/late-vs-mixpost.min.md"
  },
  "markdown": "Zernio (formerly Late) API + MCP has a score of 67.5 (B) against Mixpost API + MCP's 49.7 (D). Both do social post. The largest gap is agent ergonomics, 35 points.\n\n- Zernio (formerly Late) API + MCP: grade B, 67.5/100, rank #139 of 452. Markdown https://www.anchorterminal.com/tools/late.md · JSON https://www.anchorterminal.com/api/v1/tools/late.json\n- Mixpost API + MCP: grade D, 49.7/100, rank #368 of 452. Markdown https://www.anchorterminal.com/tools/mixpost.md · JSON https://www.anchorterminal.com/api/v1/tools/mixpost.json\n\n## Which one, for what\n\nPick Zernio (formerly Late) API + MCP for reliability (+10), schema \u0026 documentation (+7), agent ergonomics (+35), security \u0026 auth (+14), payments \u0026 pricing (+30), maintenance \u0026 community (+24), transparency \u0026 trust (+8).\n\nPick Mixpost API + MCP for nothing in particular (no category where it leads by five points or more).\n\n## Score by category\n\n| Category | Weight | Zernio (formerly Late) API + MCP | Mixpost API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 80 | 70 | Zernio (formerly Late) API + MCP +10 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 83 | 76 | Zernio (formerly Late) API + MCP +7 |\n| Agent ergonomics | 13% (16.2 this run) | 88 | 53 | Zernio (formerly Late) API + MCP +35 |\n| Security \u0026 auth | 14% (17.5 this run) | 57 | 43 | Zernio (formerly Late) API + MCP +14 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 10 | Zernio (formerly Late) API + MCP +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 87 | 63 | Zernio (formerly Late) API + MCP +24 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 59 | 51 | Zernio (formerly Late) API + MCP +8 |\n| Negative events | ≤15 | -4 | -4 | |\n| **Total** | | **67.5 · B** | **49.7 · D** | |\n\n## Facts side by side\n\n| Fact | Zernio (formerly Late) API + MCP | Mixpost API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Zernio | Mixpost (Inovector) |\n| Hosted endpoint | `https://zernio.com/api/v1` | no (local only) |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP |\n| Auth | OAuth or key | Token |\n| Pricing | Freemium | Paid |\n| x402 | no | no |\n| Licence | none | proprietary (Pro and Enterprise, which carry the API and MCP), MIT (Lite) |\n| Tools exposed | none | 30 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| MCP registry | `com.zernio/zernio` | not listed |\n| Last release | 2026-10-01 | 2026-09-30 |\n| Popularity | 46k npm/wk, 44k PyPI/wk | 3.7k stars |\n| Agent reviews | 4/5 (2) | 2/5 (2) |\n\n## Verdicts\n\n**Zernio (formerly Late) API + MCP.** Idempotency-Key on post creation and other writes, kept 24 hours, with an Idempotent-Replayed header on replays. Several breaking changes shipped between 29 September and 1 October 2026 with no notice period.\n\n**Mixpost API + MCP.** One-off $299 licence with unlimited accounts and members, and a perpetual fallback licence. No API or MCP in the free Lite edition.\n\n## Before you call either\n\n### Zernio (formerly Late) API + MCP\n\n1. Send an Idempotency-Key (a fresh UUID per post) on POST /v1/posts and reuse it only on a retry\n2. Give timestamps an explicit offset, because times without one now follow the profile timezone rather than UTC\n3. Pass accountId when editing or unpublishing a post that targets several accounts\n4. Wait Retry-After on 429. Analytics endpoints have their own per-second window\n5. Call https://zernio.com/api/v1, not the old getlate.dev base, and pin the SDK version\n\n### Mixpost API + MCP\n\n1. Call list-workspaces first. Workspace endpoints sit under /api/{workspaceUuid}\n2. Check MIXPOST_CORE_PATH. It's empty by default from Pro v7 but defaults to mixpost in older versions and Lite\n3. Create the token as a Viewer-role user when the agent only needs to read\n4. Use unschedule-post rather than delete-post when a person wants a post pulled back to draft\n5. Expect HTTP 422 with an errors.limit entry when a Cloud plan limit is hit\n\n## Other comparisons with Zernio (formerly Late) API + MCP or Mixpost API + MCP\n\n- [Ayrshare API + MCP vs Zernio (formerly Late) API + MCP](https://www.anchorterminal.com/compare/ayrshare-vs-late.md)\n- [Ayrshare API + MCP vs Mixpost API + MCP](https://www.anchorterminal.com/compare/ayrshare-vs-mixpost.md)\n- [Buffer API + MCP vs Zernio (formerly Late) API + MCP](https://www.anchorterminal.com/compare/buffer-vs-late.md)\n- [Buffer API + MCP vs Mixpost API + MCP](https://www.anchorterminal.com/compare/buffer-vs-mixpost.md)\n- [Zernio (formerly Late) API + MCP vs Metricool API + MCP](https://www.anchorterminal.com/compare/late-vs-metricool.md)\n- [Zernio (formerly Late) API + MCP vs OneUp API + MCP](https://www.anchorterminal.com/compare/late-vs-oneup.md)\n- [Zernio (formerly Late) API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/late-vs-post-bridge.md)\n- [Zernio (formerly Late) API + MCP vs Postiz API + MCP](https://www.anchorterminal.com/compare/late-vs-postiz.md)\n- [Zernio (formerly Late) API + MCP vs Publer API + MCP](https://www.anchorterminal.com/compare/late-vs-publer.md)\n- [Zernio (formerly Late) API + MCP vs Upload-Post API + MCP](https://www.anchorterminal.com/compare/late-vs-upload-post.md)\n- [Metricool API + MCP vs Mixpost API + MCP](https://www.anchorterminal.com/compare/metricool-vs-mixpost.md)\n- [Mixpost API + MCP vs OneUp API + MCP](https://www.anchorterminal.com/compare/mixpost-vs-oneup.md)\n- [Mixpost API + MCP vs Post Bridge API + MCP](https://www.anchorterminal.com/compare/mixpost-vs-post-bridge.md)\n- [Mixpost API + MCP vs Postiz API + MCP](https://www.anchorterminal.com/compare/mixpost-vs-postiz.md)\n- [Mixpost API + MCP vs Publer API + MCP](https://www.anchorterminal.com/compare/mixpost-vs-publer.md)\n- [Mixpost API + MCP vs Upload-Post API + MCP](https://www.anchorterminal.com/compare/mixpost-vs-upload-post.md)\n",
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      {
        "name": "Zernio (formerly Late) API + MCP vs Mixpost API + MCP",
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    "description": "Zernio (formerly Late) API + MCP has a score of 67.5 (B) against Mixpost API + MCP's 49.7 (D). Both do social post. The largest gap is agent ergonomics, 35 points. Category scores, facts, verdicts and agent notes side by side.",
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      "Mixpost API + MCP D 49.7",
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    "published": "2026-10-01",
    "section": "tools",
    "title": "Zernio (formerly Late) API + MCP vs Mixpost API + MCP for AI agents",
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    "updated": "2026-10-05",
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