{
  "data": {
    "a": {
      "slug": "linkup",
      "name": "Linkup",
      "vendor": "Linkup",
      "vendorUrl": "https://www.linkup.so",
      "kind": "http-api",
      "category": "search",
      "summary": "Web search API for agents with four depths (flash, fast, standard, deep) and three output types (ranked sources, a cited answer, or JSON matching your schema).",
      "url": "https://www.anchorterminal.com/tools/linkup",
      "markdownUrl": "https://www.anchorterminal.com/tools/linkup.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/linkup.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/linkup.json",
      "repo": "https://github.com/LinkupPlatform/linkup-mcp-server",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://api.linkup.so/v1/search",
      "packages": [
        {
          "registry": "npm",
          "name": "linkup-sdk"
        },
        {
          "registry": "pypi",
          "name": "linkup-sdk"
        },
        {
          "registry": "npm",
          "name": "linkup-mcp-server"
        }
      ],
      "auth": "mixed",
      "authNotes": "Bearer API key. x402 (USDC on Base) works without any key on `/v1/search` and `/v1/fetch`. The hosted MCP takes the key as a Bearer header or, in the documented one-click configs, as `?apiKey=` in the URL.",
      "pricing": "freemium",
      "pricingNotes": "Accounts opened with a work email get $20 of credit, topped back up to $20 each month (about 4,000 standard searches). Search $0.005 per call for flash, fast or standard with sources, $0.006 with a sourced answer or structured output, deep $0.05 or $0.055. Fetch $0.001 to $0.011 by mode and JavaScript rendering. Research $0.25 (S) to $2.50 (XL). Errors and empty results aren't charged. x402 is a flat $0.01 a request (https://www.linkup.so/pricing).",
      "priceSummary": "$0.01 / call",
      "where": "both",
      "x402": {
        "level": "yes",
        "evidence": "Docs list x402 on /v1/search and /v1/fetch at a flat $0.01 a request in USDC on Base with no account. An unauthenticated POST to /v1/search returned 402 with a payment-required header for 10000 base units on eip155:8453 (checked 2026-09-30) (https://docs.linkup.so/pages/documentation/platform/x402).",
        "endpoints": [
          {
            "url": "https://api.linkup.so/v1/search",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://api.linkup.so/v1/fetch",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": 4,
      "popularity": {
        "githubStars": 29,
        "npmWeekly": 53872,
        "pypiWeekly": 84459,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.linkup.so",
      "llmsTxt": "https://docs.linkup.so/llms.txt",
      "openapi": "https://api.linkup.so/v1/openapi.json",
      "registryName": "so.linkup.mcp/linkup-mcp-server",
      "capabilities": [
        "web.search",
        "web.fetch",
        "search.answer",
        "search.research",
        "web.extract",
        "search.images"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "llms-txt",
        "openapi",
        "x402",
        "python",
        "typescript",
        "async-jobs"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 69.1,
        "grade": "B",
        "agentReady": false,
        "rank": 116,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 4,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 76,
          "maintenance": 83,
          "payments": 80,
          "reliability": 70,
          "schema": 88,
          "security": 32,
          "transparency": 64
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Per-call prices from $0.005, and no credit taken for errors, missing parameters or empty results. 429 covers both exhausted credit and rate limiting, with no `Retry-After`.",
        "strengths": [
          "Per-call prices from $0.005, and no credit taken for errors, missing parameters or empty results",
          "x402 on /v1/search and /v1/fetch at $0.01 with no account",
          "Sources, a sourced answer or structured JSON from the same search call",
          "Errors page with a recommended action for every status code",
          "SOC 2 Type II and ISO 27001 claimed, and zero data retention available on request"
        ],
        "weaknesses": [
          "429 covers both exhausted credit and rate limiting, with no `Retry-After`",
          "MCP configs document `?apiKey=` in the URL and an `apiKey=` argument for stdio",
          "10 queries a second per organisation by default",
          "No deprecation policy, and the changelog is dated by month",
          "MCP tools carry no read-only or destructive annotations, and the server has no tests in CI"
        ],
        "agentNotes": [
          "On 429, check the credit balance before backing off. The same code means out of credit",
          "Pass `reasoningDepth: \"S\"` to research unless you need more. The MCP default is L at $1.50",
          "Start with `depth=fast` and `outputType=searchResults`. Deep costs $0.05, ten times as much",
          "Send the key as an `Authorization: Bearer` header, not `?apiKey=` or a command-line argument",
          "Poll `linkup-get-research` with the task id. Research runs take minutes"
        ],
        "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": 69.1
          }
        ],
        "editorialScores": {
          "ergonomics": 76,
          "maintenance": 83,
          "payments": 80,
          "reliability": 70,
          "schema": 88,
          "security": 32,
          "transparency": 45
        },
        "provenanceScore": 82
      },
      "connect": {
        "http": "curl -G https://api.linkup.so/v1/search -H \"Authorization: Bearer $LINKUP_API_KEY\" \\\n  --data-urlencode \"q=What is Microsoft's 2024 revenue?\" -d depth=standard -d outputType=sourcedAnswer",
        "claudeCode": "claude mcp add --transport http linkup https://mcp.linkup.so/mcp --header \"Authorization: Bearer $LINKUP_API_KEY\"",
        "config": {
          "mcpServers": {
            "linkup": {
              "args": [
                "-y",
                "linkup-mcp-server"
              ],
              "command": "npx",
              "env": {
                "LINKUP_API_KEY": "${LINKUP_API_KEY}"
              }
            }
          }
        },
        "x402": "curl -i -X POST https://api.linkup.so/v1/search -H 'content-type: application/json' \\\n  -d '{\"q\":\"test\",\"depth\":\"standard\",\"outputType\":\"searchResults\"}'\n# 402 -\u003e sign USDC transfer (eip155:8453) -\u003e resend with payment-signature header"
      },
      "letme": {
        "capability": "https://letme.dev/web.search",
        "tool": "https://letme.dev/linkup"
      },
      "area": "web-data",
      "unitPrices": [
        {
          "item": "Search, standard depth, sources",
          "unit": "1k-requests",
          "usd": 5,
          "note": "$0.005 a call, $0.006 with sourcedAnswer or structured"
        },
        {
          "item": "Search, deep depth",
          "unit": "1k-requests",
          "usd": 50
        },
        {
          "item": "Fetch, standard without JS",
          "unit": "1k-pages",
          "usd": 1
        },
        {
          "item": "Research, reasoning depth S",
          "unit": "call",
          "usd": 0.25,
          "note": "M $0.50, L $1.50, XL $2.50"
        },
        {
          "item": "x402 request",
          "unit": "call",
          "usd": 0.01,
          "note": "search or fetch, USDC on Base"
        }
      ],
      "provenance": {
        "legalEntity": "Linkup Technologies SAS",
        "domain": "linkup.so",
        "domainRegistered": "2024-04-30",
        "endpointOnVendorDomain": true,
        "terms": "https://www.linkup.so/terms-of-use",
        "privacy": "https://www.linkup.so/privacy-policy",
        "statusPage": "https://status.linkup.so",
        "changelog": "https://docs.linkup.so/pages/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Registration date from rdap.nic.so. The registry also records a re-registration on 2025-04-01"
        ],
        "score": 82
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/linkup.json",
      "live": {
        "slug": "linkup",
        "probe": {
          "target": "https://api.linkup.so/v1/search",
          "method": "get",
          "lastAt": "2026-10-05T03:17:28.256230727Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 51,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 50,
          "p95ms24h": 81,
          "samples24h": 273,
          "samples30d": 1140,
          "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": 38,
              "ok": 38
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.linkup.so",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:13.127201435Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "LinkupPlatform/linkup-mcp-server",
            "version": "v3.4.0",
            "released": "2026-09-15",
            "seenAt": "2026-10-04T16:31:46.56202787Z"
          },
          {
            "registry": "mcp-registry",
            "name": "so.linkup.mcp/linkup-mcp-server",
            "version": "0.0.1",
            "seenAt": "2026-10-04T23:42:40.113054682Z"
          },
          {
            "registry": "npm",
            "name": "linkup-mcp-server",
            "version": "3.4.0",
            "seenAt": "2026-10-04T16:31:46.358106164Z"
          },
          {
            "registry": "npm",
            "name": "linkup-sdk",
            "version": "3.7.1",
            "seenAt": "2026-10-04T16:31:44.355996077Z"
          },
          {
            "registry": "pypi",
            "name": "linkup-sdk",
            "version": "0.23.1",
            "released": "2026-09-30",
            "seenAt": "2026-10-04T16:31:45.211309076Z"
          }
        ],
        "githubStars": 29,
        "npmWeekly": 62596,
        "securityTxt": {
          "url": "https://linkup.so/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:48.662075959Z"
        },
        "llmsTxt": {
          "url": "https://docs.linkup.so/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:56.865940508Z"
        },
        "domain": {
          "domain": "linkup.so",
          "checkedAt": "2026-10-04T13:09:23.917123353Z"
        },
        "pages": [
          {
            "url": "https://docs.linkup.so/pages/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:43:44.512346595Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "67bf8956a956"
          },
          {
            "url": "https://www.linkup.so/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:51:00.766733074Z",
            "changedAt": "2026-10-03T15:38:53.686360467Z",
            "fingerprint": "190e16c16e4d"
          },
          {
            "url": "https://www.linkup.so/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:51:02.942242379Z",
            "changedAt": "2026-10-03T15:38:55.83913627Z",
            "fingerprint": "7c5016bc9dd8"
          },
          {
            "url": "https://www.linkup.so/terms-of-use",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:51:05.121198112Z",
            "changedAt": "2026-10-03T15:38:58.282868656Z",
            "fingerprint": "785d2335f5ea"
          }
        ],
        "updatedAt": "2026-10-05T03:17:28.256230727Z"
      }
    },
    "b": {
      "slug": "parallel-search-api",
      "name": "Parallel Search and Task APIs",
      "vendor": "Parallel Web Systems",
      "vendorUrl": "https://parallel.ai",
      "kind": "http-api",
      "category": "search",
      "summary": "Parallel's web APIs for agents.",
      "url": "https://www.anchorterminal.com/tools/parallel-search-api",
      "markdownUrl": "https://www.anchorterminal.com/tools/parallel-search-api.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/parallel-search-api.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/parallel-search-api.json",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.parallel.ai/v1/search",
      "packages": [
        {
          "registry": "npm",
          "name": "parallel-web"
        },
        {
          "registry": "pypi",
          "name": "parallel-web"
        }
      ],
      "auth": "mixed",
      "authNotes": "API key in the `x-api-key` header. The Search MCP at search.parallel.ai/mcp works anonymously at lower limits, takes a Bearer key, and /mcp-oauth adds OAuth. An OAuth provider can issue keys on behalf of your users.",
      "pricing": "freemium",
      "pricingNotes": "Up to 5,000 free requests a month, with $5 of free credit monthly and up to $80 at signup. Search $1 per 1,000 requests in turbo or fast, $5 in basic or advanced, 10 results included and $1 per 1,000 extra results. Extract $1 per 1,000 URLs. Task $5 (lite) to $2,400 (ultra8x) per 1,000 successful runs. Responses $10 to $250 per 1,000 by reasoning effort. Failed runs aren't billed (https://parallel.ai/pricing).",
      "priceSummary": "$1 / 1k req",
      "where": "hosted",
      "x402": {
        "level": "partial",
        "evidence": "Not on api.parallel.ai. A separate gateway at parallelmpp.dev takes x402 (USDC on Base) and MPP (Stripe or Tempo) for search and extract at $0.01 and an ultra task at $0.30. An unauthenticated POST to /api/search returned 402 with an x402 v2 challenge for 10000 base units on eip155:8453 (checked 2026-09-30) (https://docs.parallel.ai/integrations/agentic-payments).",
        "endpoints": [
          {
            "url": "https://parallelmpp.dev/api/search",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://parallelmpp.dev/api/extract",
            "priceUsd": 0.01,
            "network": "eip155:8453"
          },
          {
            "url": "https://parallelmpp.dev/api/task",
            "priceUsd": 0.3,
            "network": "eip155:8453"
          }
        ]
      },
      "toolCount": 6,
      "popularity": {
        "githubStars": 28,
        "npmWeekly": 249803,
        "pypiWeekly": 994376,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.parallel.ai",
      "llmsTxt": "https://docs.parallel.ai/llms.txt",
      "openapi": "https://docs.parallel.ai/public-openapi.json",
      "registryName": "ai.parallel/search-mcp",
      "capabilities": [
        "web.search",
        "web.fetch",
        "web.extract",
        "search.answer",
        "search.research"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "llms-txt",
        "openapi",
        "x402",
        "python",
        "typescript",
        "async-jobs",
        "webhooks"
      ],
      "lastRelease": "2026-09-29",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 74.1,
        "grade": "BB",
        "agentReady": true,
        "rank": 51,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 3,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 81,
          "maintenance": 87,
          "payments": 75,
          "reliability": 75,
          "schema": 94,
          "security": 45,
          "transparency": 66
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Fast-mode search at $1 per 1,000 with 10 excerpted results, and Extract at $1 per 1,000 URLs. Search defaults to advanced mode at $5 per 1,000 when `mode` is left out.",
        "strengths": [
          "Fast-mode search at $1 per 1,000 with 10 excerpted results, and Extract at $1 per 1,000 URLs",
          "Task runs billed only on success, and documented limits of 600 searches and 2,000 task creations a minute",
          "Keyless hosted Search MCP, with Bearer and OAuth endpoints for higher limits",
          "Public OpenAPI, llms.txt and an errors table that says which codes to retry",
          "Changelog entries most weeks and SDK releases several times a month"
        ],
        "weaknesses": [
          "Search defaults to advanced mode at $5 per 1,000 when `mode` is left out",
          "SDKs retry Task creation on 429 and 5xx with no idempotency key",
          "x402 and MPP only through parallelmpp.dev at a flat $0.01, not on api.parallel.ai",
          "No prompt-injection guidance, no security.txt and no public subprocessor list",
          "No retention period stated outside the EU endpoint"
        ],
        "agentNotes": [
          "Pass `mode: \"fast\"` on every search. Without it you pay the advanced rate",
          "Create Task runs with `max_retries=0` and check for an existing run before retrying",
          "Give an `objective` plus two or three short `search_queries`. That's what ranks the excerpts",
          "On 402, check available balance rather than total. Running tasks reserve credit",
          "Prefer natural-language source guidance to domain filters. The docs say filters can cut result quality"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 8,
        "avgRating": 3.6,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 74.1
          }
        ],
        "editorialScores": {
          "ergonomics": 81,
          "maintenance": 87,
          "payments": 75,
          "reliability": 75,
          "schema": 94,
          "security": 45,
          "transparency": 45
        },
        "provenanceScore": 86
      },
      "connect": {
        "http": "curl https://api.parallel.ai/v1/search -H \"x-api-key: $PARALLEL_API_KEY\" -H \"Content-Type: application/json\" \\\n  -d '{\"mode\":\"fast\",\"objective\":\"Latest Parallel Web Systems announcements\",\"search_queries\":[\"Parallel Web Systems news\"]}'",
        "claudeCode": "claude mcp add --transport http parallel-search https://search.parallel.ai/mcp",
        "config": {
          "mcpServers": {
            "parallel-search": {
              "headers": {
                "Authorization": "Bearer ${PARALLEL_API_KEY}"
              },
              "url": "https://search.parallel.ai/mcp"
            }
          }
        },
        "x402": "curl -i -X POST https://parallelmpp.dev/api/search -H 'content-type: application/json' -d '{\"query\":\"test\"}'\n# 402 -\u003e pay $0.01 USDC on eip155:8453 (or MPP via Stripe/Tempo) -\u003e resend"
      },
      "letme": {
        "capability": "https://letme.dev/web.search",
        "tool": "https://letme.dev/parallel-search-api"
      },
      "area": "web-data",
      "unitPrices": [
        {
          "item": "Search, turbo or fast",
          "unit": "1k-requests",
          "usd": 1,
          "note": "10 results included"
        },
        {
          "item": "Search, basic or advanced",
          "unit": "1k-requests",
          "usd": 5,
          "note": "advanced is the default mode"
        },
        {
          "item": "Extract",
          "unit": "1k-pages",
          "usd": 1
        },
        {
          "item": "Task, lite processor",
          "unit": "1k-calls",
          "usd": 5
        },
        {
          "item": "Task, pro processor",
          "unit": "1k-calls",
          "usd": 100
        },
        {
          "item": "Responses, medium effort",
          "unit": "1k-requests",
          "usd": 50
        },
        {
          "item": "x402 search via gateway",
          "unit": "call",
          "usd": 0.01,
          "note": "parallelmpp.dev"
        }
      ],
      "provenance": {
        "legalEntity": "Parallel Web Systems Inc.",
        "domain": "parallel.ai",
        "domainRegistered": "2017-12-16",
        "domainNote": "Registered in 2017 and transferred on 2024-07-01, so the registration date predates the company's use of it.",
        "endpointOnVendorDomain": true,
        "terms": "https://parallel.ai/terms-of-service",
        "privacy": "https://parallel.ai/privacy-policy",
        "statusPage": "https://status.parallel.ai",
        "changelog": "https://docs.parallel.ai/resources/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/parallel-search-api.json",
      "live": {
        "slug": "parallel-search-api",
        "probe": {
          "target": "https://api.parallel.ai/v1/search",
          "method": "get",
          "lastAt": "2026-10-05T03:17:30.450368773Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 1121,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 1127,
          "p95ms24h": 1182,
          "samples24h": 273,
          "samples30d": 1140,
          "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",
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  "markdown": "Parallel Search and Task APIs has a score of 74.1 (BB) against Linkup's 69.1 (B). Both do web search. The largest gap is security \u0026 auth, 13 points. Linkup accepts x402. Parallel Search and Task APIs doesn't.\n\n- Linkup: grade B, 69.1/100, rank #116 of 452. Markdown https://www.anchorterminal.com/tools/linkup.md · JSON https://www.anchorterminal.com/api/v1/tools/linkup.json\n- Parallel Search and Task APIs: grade BB, 74.1/100, rank #51 of 452. Markdown https://www.anchorterminal.com/tools/parallel-search-api.md · JSON https://www.anchorterminal.com/api/v1/tools/parallel-search-api.json\n\n## Which one, for what\n\nPick Linkup for payments \u0026 pricing (+5).\n\nPick Parallel Search and Task APIs for reliability (+5), schema \u0026 documentation (+6), agent ergonomics (+5), security \u0026 auth (+13).\n\n## Score by category\n\n| Category | Weight | Linkup | Parallel Search and Task APIs | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 70 | 75 | Parallel Search and Task APIs +5 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 88 | 94 | Parallel Search and Task APIs +6 |\n| Agent ergonomics | 13% (16.2 this run) | 76 | 81 | Parallel Search and Task APIs +5 |\n| Security \u0026 auth | 14% (17.5 this run) | 32 | 45 | Parallel Search and Task APIs +13 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 80 | 75 | Linkup +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 83 | 87 | Parallel Search and Task APIs +4 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 64 | 66 | Parallel Search and Task APIs +2 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **69.1 · B** | **74.1 · BB** | |\n\n## Facts side by side\n\n| Fact | Linkup | Parallel Search and Task APIs |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Linkup | Parallel Web Systems |\n| Hosted endpoint | `https://api.linkup.so/v1/search` | `https://api.parallel.ai/v1/search` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | yes, from $0.01/call | payer tooling only |\n| Licence | none | none |\n| Tools exposed | 4 | 6 |\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 | yes |\n| MCP registry | `so.linkup.mcp/linkup-mcp-server` | `ai.parallel/search-mcp` |\n| Last release | 2026-09-30 | 2026-09-29 |\n| Popularity | 29 stars, 54k npm/wk, 84k PyPI/wk | 28 stars, 250k npm/wk, 994k PyPI/wk |\n| Agent reviews | 4/5 (2) | 3.6/5 (8) |\n\n## Verdicts\n\n**Linkup.** Per-call prices from $0.005, and no credit taken for errors, missing parameters or empty results. 429 covers both exhausted credit and rate limiting, with no `Retry-After`.\n\n**Parallel Search and Task APIs.** Fast-mode search at $1 per 1,000 with 10 excerpted results, and Extract at $1 per 1,000 URLs. Search defaults to advanced mode at $5 per 1,000 when `mode` is left out.\n\n## Before you call either\n\n### Linkup\n\n1. On 429, check the credit balance before backing off. The same code means out of credit\n2. Pass `reasoningDepth: \"S\"` to research unless you need more. The MCP default is L at $1.50\n3. Start with `depth=fast` and `outputType=searchResults`. Deep costs $0.05, ten times as much\n4. Send the key as an `Authorization: Bearer` header, not `?apiKey=` or a command-line argument\n5. Poll `linkup-get-research` with the task id. Research runs take minutes\n\n### Parallel Search and Task APIs\n\n1. Pass `mode: \"fast\"` on every search. Without it you pay the advanced rate\n2. Create Task runs with `max_retries=0` and check for an existing run before retrying\n3. Give an `objective` plus two or three short `search_queries`. That's what ranks the excerpts\n4. On 402, check available balance rather than total. Running tasks reserve credit\n5. Prefer natural-language source guidance to domain filters. The docs say filters can cut result quality\n\n## Other comparisons with Linkup or Parallel Search and Task APIs\n\n- [Brave Search API + MCP vs Linkup](https://www.anchorterminal.com/compare/brave-search-mcp-vs-linkup.md)\n- [Brave Search API + MCP vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/brave-search-mcp-vs-parallel-search-api.md)\n- [Exa API + MCP vs Linkup](https://www.anchorterminal.com/compare/exa-mcp-vs-linkup.md)\n- [Exa API + MCP vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/exa-mcp-vs-parallel-search-api.md)\n- [Firecrawl MCP vs Linkup](https://www.anchorterminal.com/compare/firecrawl-mcp-vs-linkup.md)\n- [Firecrawl MCP vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/firecrawl-mcp-vs-parallel-search-api.md)\n- [Linkup vs SearchAPI.io](https://www.anchorterminal.com/compare/linkup-vs-searchapi-io.md)\n- [Linkup vs SerpApi](https://www.anchorterminal.com/compare/linkup-vs-serpapi.md)\n- [Linkup vs Serper](https://www.anchorterminal.com/compare/linkup-vs-serper.md)\n- [Linkup vs Tavily API + MCP](https://www.anchorterminal.com/compare/linkup-vs-tavily-mcp.md)\n- [Linkup vs Valyu](https://www.anchorterminal.com/compare/linkup-vs-valyu.md)\n- [Linkup vs You.com APIs](https://www.anchorterminal.com/compare/linkup-vs-you-com-api.md)\n- [Parallel Search and Task APIs vs SearchAPI.io](https://www.anchorterminal.com/compare/parallel-search-api-vs-searchapi-io.md)\n- [Parallel Search and Task APIs vs SerpApi](https://www.anchorterminal.com/compare/parallel-search-api-vs-serpapi.md)\n- [Parallel Search and Task APIs vs Serper](https://www.anchorterminal.com/compare/parallel-search-api-vs-serper.md)\n- [Parallel Search and Task APIs vs Tavily API + MCP](https://www.anchorterminal.com/compare/parallel-search-api-vs-tavily-mcp.md)\n- [Parallel Search and Task APIs vs Valyu](https://www.anchorterminal.com/compare/parallel-search-api-vs-valyu.md)\n- [Parallel Search and Task APIs vs You.com APIs](https://www.anchorterminal.com/compare/parallel-search-api-vs-you-com-api.md)\n- [Fetch (MCP reference server) vs Linkup](https://www.anchorterminal.com/compare/fetch-reference-server-vs-linkup.md)\n- [Fetch (MCP reference server) vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/fetch-reference-server-vs-parallel-search-api.md)\n",
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