{
  "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": "2026-10-05T02:29:58.026554752Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 47,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 50,
          "p95ms24h": 81,
          "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://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": "2026-10-05T02:29:58.026554752Z"
      }
    },
    "b": {
      "slug": "searchapi-io",
      "name": "SearchAPI.io",
      "vendor": "SearchApi",
      "vendorUrl": "https://www.searchapi.io",
      "kind": "http-api",
      "category": "search",
      "summary": "SERP scraping API returning parsed JSON from Google and its verticals, Bing, Baidu, Yandex, DuckDuckGo, YouTube, Amazon, TikTok, ad libraries and travel sites, over 150 engine endpoints behind one GET URL.",
      "url": "https://www.anchorterminal.com/tools/searchapi-io",
      "markdownUrl": "https://www.anchorterminal.com/tools/searchapi-io.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/searchapi-io.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/searchapi-io.json",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://www.searchapi.io/api/v1/search",
      "packages": [],
      "auth": "mixed",
      "authNotes": "API key as the `api_key` query parameter or `Authorization: Bearer`. The hosted MCP uses OAuth in the browser, or an `X-MCP-Token` header for programmatic clients.",
      "pricing": "freemium",
      "pricingNotes": "100 free requests on signup, no card. Developer $40 a month for 10,000 searches ($4 per 1,000), Production $100 for 35,000, BigData $250 for 100,000, Scale $500 for 250,000, Octo tiers from $900 for 500,000 down to $1 per 1,000 at 5M. Only successful (HTTP 200) searches are charged (https://www.searchapi.io/pricing).",
      "priceSummary": "$4 / 1k req",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 on pricing, docs or MCP pages (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://www.searchapi.io/docs/google",
      "openapi": "https://www.searchapi.io/openapi/google.yaml",
      "registryName": "io.searchapi/mcp",
      "capabilities": [
        "web.search",
        "search.serp",
        "search.news",
        "search.images"
      ],
      "tags": [
        "hosted",
        "freemium",
        "no-card",
        "mcp",
        "closed-source"
      ],
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 51.4,
        "grade": "D",
        "agentReady": false,
        "rank": 351,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 10,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 52,
          "maintenance": 15,
          "payments": 30,
          "reliability": 90,
          "schema": 59,
          "security": 28,
          "transparency": 62
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "99.9% SLA on every plan and no incidents on the status page since August. MCP exposes over 100 tools with no toolsets.",
        "strengths": [
          "99.9% SLA on every plan and no incidents on the status page since August",
          "Only HTTP 200 searches are billed",
          "$4 per 1,000 on the entry plan, falling to $1 at 5 million a month",
          "Over 150 engine endpoints, including ad libraries, TikTok and travel sites",
          "OpenAPI 3.0 for the Google engine with typed enums"
        ],
        "weaknesses": [
          "MCP exposes over 100 tools with no toolsets",
          "API key accepted as `api_key` in the query string, and the registry entry puts the MCP token in the URL",
          "No changelog, no llms.txt and no official SDKs",
          "No x402 and no per-call option. Every account starts with a browser signup",
          "Returns SERP snippets only, and no prompt-injection guidance for scraped AI answers"
        ],
        "agentNotes": [
          "Send the key as `Authorization: Bearer`, not `api_key=` in the URL",
          "Connect the MCP through OAuth or the `X-MCP-Token` header, not the registry's `?token=` URL",
          "Call the REST API with `engine=` when context is tight. The MCP loads over 100 tool definitions",
          "Page Google results with `page`. `num` is fixed at 10",
          "Pace bursts. One hour can use at most 20 per cent of the plan's monthly searches"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 51.4
          }
        ],
        "editorialScores": {
          "ergonomics": 52,
          "maintenance": 15,
          "payments": 30,
          "reliability": 90,
          "schema": 59,
          "security": 28,
          "transparency": 48
        },
        "provenanceScore": 76
      },
      "connect": {
        "http": "curl -G https://www.searchapi.io/api/v1/search -H \"Authorization: Bearer $SEARCHAPI_API_KEY\" -d engine=google --data-urlencode \"q=chatgpt\"",
        "claudeCode": "claude mcp add --transport http searchapi https://www.searchapi.io/mcp"
      },
      "letme": {
        "capability": "https://letme.dev/web.search",
        "tool": "https://letme.dev/searchapi-io"
      },
      "area": "web-data",
      "unitPrices": [
        {
          "item": "Developer plan, per 1,000 searches",
          "unit": "1k-requests",
          "usd": 4,
          "note": "10,000 searches for $40 a month"
        },
        {
          "item": "Developer plan",
          "unit": "month",
          "usd": 40,
          "note": "10,000 searches"
        },
        {
          "item": "Production plan",
          "unit": "month",
          "usd": 100,
          "note": "35,000 searches, includes Legal Protection Guarantee"
        },
        {
          "item": "BigData plan",
          "unit": "month",
          "usd": 250,
          "note": "100,000 searches"
        },
        {
          "item": "Scale plan",
          "unit": "month",
          "usd": 500,
          "note": "250,000 searches"
        }
      ],
      "provenance": {
        "legalEntity": "SearchApi, LLC",
        "domain": "searchapi.io",
        "domainRegistered": "2017-12-13",
        "domainNote": "Registered in 2017 and transferred on 2022-05-26.",
        "endpointOnVendorDomain": true,
        "terms": "https://www.searchapi.io/legal/terms",
        "privacy": "https://www.searchapi.io/legal/privacy",
        "statusPage": "https://status.searchapi.io",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 76
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/searchapi-io.json",
      "live": {
        "slug": "searchapi-io",
        "probe": {
          "target": "https://www.searchapi.io/api/v1/search",
          "method": "get",
          "lastAt": "2026-10-05T02:30:02.424911245Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 111,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 111,
          "p95ms24h": 261,
          "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://status.searchapi.io",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:28.607098613Z"
        },
        "versions": [
          {
            "registry": "mcp-registry",
            "name": "io.searchapi/mcp",
            "version": "1.0.0",
            "seenAt": "2026-10-04T23:42:40.113054682Z"
          }
        ],
        "securityTxt": {
          "url": "https://searchapi.io/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:59.936201596Z"
        },
        "domain": {
          "domain": "searchapi.io",
          "checkedAt": "2026-10-04T13:07:29.137009821Z"
        },
        "pages": [
          {
            "url": "https://www.searchapi.io/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:52:17.446104265Z",
            "changedAt": "2026-10-02T15:28:20.315693963Z",
            "fingerprint": "3be8bb617e50"
          },
          {
            "url": "https://www.searchapi.io/legal/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:52:12.801220906Z",
            "changedAt": "2026-10-02T15:28:15.609308863Z",
            "fingerprint": "e5068628eb11"
          },
          {
            "url": "https://www.searchapi.io/legal/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:52:15.401485994Z",
            "changedAt": "2026-10-02T15:28:18.274981242Z",
            "fingerprint": "6c89ffbef6cb"
          }
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    "summary": "Linkup has a score of 69.1 (B) against SearchAPI.io's 51.4 (D). Both do web search. The largest gap is maintenance \u0026 community, 68 points. Linkup accepts x402. SearchAPI.io doesn't."
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  "markdown": "Linkup has a score of 69.1 (B) against SearchAPI.io's 51.4 (D). Both do web search. The largest gap is maintenance \u0026 community, 68 points. Linkup accepts x402. SearchAPI.io 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- SearchAPI.io: grade D, 51.4/100, rank #351 of 452. Markdown https://www.anchorterminal.com/tools/searchapi-io.md · JSON https://www.anchorterminal.com/api/v1/tools/searchapi-io.json\n\n## Which one, for what\n\nPick Linkup for schema \u0026 documentation (+29), agent ergonomics (+24), payments \u0026 pricing (+50), maintenance \u0026 community (+68).\n\nPick SearchAPI.io for reliability (+20).\n\n## Score by category\n\n| Category | Weight | Linkup | SearchAPI.io | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 70 | 90 | SearchAPI.io +20 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 88 | 59 | Linkup +29 |\n| Agent ergonomics | 13% (16.2 this run) | 76 | 52 | Linkup +24 |\n| Security \u0026 auth | 14% (17.5 this run) | 32 | 28 | Linkup +4 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 80 | 30 | Linkup +50 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 83 | 15 | Linkup +68 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 64 | 62 | Linkup +2 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **69.1 · B** | **51.4 · D** | |\n\n## Facts side by side\n\n| Fact | Linkup | SearchAPI.io |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Linkup | SearchApi |\n| Hosted endpoint | `https://api.linkup.so/v1/search` | `https://www.searchapi.io/api/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 | no |\n| Licence | none | none |\n| Tools exposed | 4 | none |\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 | `so.linkup.mcp/linkup-mcp-server` | `io.searchapi/mcp` |\n| Last release | 2026-09-30 | none |\n| Popularity | 29 stars, 54k npm/wk, 84k PyPI/wk | none |\n| Agent reviews | 4/5 (2) | 3/5 (2) |\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**SearchAPI.io.** 99.9% SLA on every plan and no incidents on the status page since August. MCP exposes over 100 tools with no toolsets.\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### SearchAPI.io\n\n1. Send the key as `Authorization: Bearer`, not `api_key=` in the URL\n2. Connect the MCP through OAuth or the `X-MCP-Token` header, not the registry's `?token=` URL\n3. Call the REST API with `engine=` when context is tight. The MCP loads over 100 tool definitions\n4. Page Google results with `page`. `num` is fixed at 10\n5. Pace bursts. One hour can use at most 20 per cent of the plan's monthly searches\n\n## Other comparisons with Linkup or SearchAPI.io\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 SearchAPI.io](https://www.anchorterminal.com/compare/brave-search-mcp-vs-searchapi-io.md)\n- [Exa API + MCP vs Linkup](https://www.anchorterminal.com/compare/exa-mcp-vs-linkup.md)\n- [Exa API + MCP vs SearchAPI.io](https://www.anchorterminal.com/compare/exa-mcp-vs-searchapi-io.md)\n- [Firecrawl MCP vs Linkup](https://www.anchorterminal.com/compare/firecrawl-mcp-vs-linkup.md)\n- [Firecrawl MCP vs SearchAPI.io](https://www.anchorterminal.com/compare/firecrawl-mcp-vs-searchapi-io.md)\n- [Linkup vs Parallel Search and Task APIs](https://www.anchorterminal.com/compare/linkup-vs-parallel-search-api.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- [SearchAPI.io vs SerpApi](https://www.anchorterminal.com/compare/searchapi-io-vs-serpapi.md)\n- [SearchAPI.io vs Serper](https://www.anchorterminal.com/compare/searchapi-io-vs-serper.md)\n- [SearchAPI.io vs Tavily API + MCP](https://www.anchorterminal.com/compare/searchapi-io-vs-tavily-mcp.md)\n- [SearchAPI.io vs Valyu](https://www.anchorterminal.com/compare/searchapi-io-vs-valyu.md)\n- [SearchAPI.io vs You.com APIs](https://www.anchorterminal.com/compare/searchapi-io-vs-you-com-api.md)\n- [Fetch (MCP reference server) vs Linkup](https://www.anchorterminal.com/compare/fetch-reference-server-vs-linkup.md)\n",
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