{
  "data": {
    "a": {
      "slug": "clearbit",
      "name": "Clearbit",
      "vendor": "HubSpot, Inc.",
      "vendorUrl": "https://clearbit.com",
      "kind": "http-api",
      "category": "lead-data",
      "summary": "Clearbit is a B2B data provider for company, contact and IP intelligence, acquired by HubSpot. It still runs enrichment, reveal and prospecting APIs for existing customers, and HubSpot's Breeze Intelligence carries its data for new buyers.",
      "url": "https://www.anchorterminal.com/tools/clearbit",
      "markdownUrl": "https://www.anchorterminal.com/tools/clearbit.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/clearbit.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/clearbit.json",
      "license": "Proprietary service under the Clearbit Terms of Service (30 May 2025), provided by HubSpot, Inc. under the Clearbit brand",
      "transports": [
        "http"
      ],
      "packages": [],
      "auth": "api-key",
      "authNotes": "API access is for existing Clearbit customers through their dashboard, and dashboard.clearbit.com/docs redirects to a login. The home page links only to a customer login, with no sign-up for new customers (checked 2026-10-14).",
      "pricing": "paid",
      "pricingNotes": "No public prices. clearbit.com/pricing redirects to the home page. The free tools (Free Clearbit Platform, Weekly Visitor Report, Clearbit Connect, TAM Calculator and the free Slack integration) were discontinued on 30 April 2025, and the free Logo API was shut down on 8 December 2025 (https://clearbit.com/changelog, checked 2026-10-14).",
      "priceSummary": "Paid",
      "where": "local",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 on the public Clearbit pages (checked 2026-10-14).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-14"
      },
      "capabilities": [
        "lead.enrichment",
        "data.company"
      ],
      "tags": [
        "hosted",
        "not-for-agents",
        "sales-led",
        "closed-source",
        "enrichment",
        "status-page",
        "soc2"
      ],
      "lastRelease": "2025-12-08",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 13.5,
        "grade": "F",
        "agentReady": false,
        "rank": 1056,
        "ranked": true,
        "rankOf": 1076,
        "categoryRank": 19,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 0,
          "maintenance": 4,
          "payments": 0,
          "reliability": 30,
          "schema": 0,
          "security": 8,
          "transparency": 66
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-14"
        },
        "negative": 0,
        "verdict": "There is no public API or MCP server an outside agent can call today. Clearbit's APIs still run for existing customers behind a login, and its free tools and Logo API were retired in 2025. HubSpot's Breeze Intelligence is the route for new buyers, through HubSpot rather than Clearbit.",
        "bestFor": "Only for teams that already hold a Clearbit contract.",
        "strengths": [
          "Public status page with 22 components and incident history",
          "Dated sunset notices with months of warning, such as the Logo API",
          "Privacy policy updated 31 August 2026 and a sub-processor page with locations"
        ],
        "weaknesses": [
          "No public API or MCP server an outside agent can call",
          "No sign-up or public prices, and the home page links only to a customer login",
          "Free tools retired on 30 April 2025 and the Logo API after 8 December 2025",
          "No security.txt, and the help centre sits behind a bot check"
        ],
        "agentNotes": [
          "Don't plan to call Clearbit. Hand the task to a person with an existing Clearbit account, or use HubSpot's Breeze Intelligence through HubSpot",
          "Replace logo.clearbit.com links, which stopped working after 8 December 2025"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "F",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 13.5
          }
        ],
        "editorialScores": {
          "ergonomics": 0,
          "maintenance": 4,
          "payments": 0,
          "reliability": 30,
          "schema": 0,
          "security": 8,
          "transparency": 61
        },
        "provenanceScore": 71
      },
      "letme": {
        "capability": "https://letme.dev/lead.enrichment",
        "tool": "https://letme.dev/clearbit"
      },
      "area": "web-data",
      "provenance": {
        "legalEntity": "HubSpot, Inc.",
        "domain": "clearbit.com",
        "domainRegistered": "",
        "endpointOnVendorDomain": true,
        "terms": "https://clearbit.com/legal",
        "privacy": "https://clearbit.com/privacy-policy",
        "statusPage": "https://status.clearbit.com",
        "changelog": "https://clearbit.com/changelog",
        "securityTxt": "none",
        "checked": "2026-10-14",
        "notes": [
          "The terms were last updated on 30 May 2025 and the privacy policy on 31 August 2026. Both name HubSpot, Inc. under its Clearbit brand.",
          "clearbit.com/.well-known/security.txt answers with an HTML page, not a security.txt file.",
          "help.clearbit.com answered with a Cloudflare bot check, so its article on buying Clearbit wasn't read. A search result quoted it as saying new standalone subscriptions are no longer offered, which we couldn't confirm first-hand.",
          "status.clearbit.com is an Atlassian Statuspage (clearbit.statuspage.io).",
          "No RDAP lookup was made for clearbit.com."
        ],
        "score": 71
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/clearbit.json",
      "live": {
        "slug": "clearbit",
        "vendorStatus": {
          "page": "https://status.clearbit.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-14T09:38:56.324557038Z"
        },
        "updatedAt": "2026-10-14T09:38:56.324557038Z"
      }
    },
    "answer": "Hunter API + MCP scores 56.5 (C) on agent readiness against Clearbit's 13.5 (F), and leads in every scored category.",
    "b": {
      "slug": "hunter",
      "name": "Hunter API + MCP",
      "vendor": "Hunter",
      "vendorUrl": "https://hunter.io",
      "kind": "http-api",
      "category": "lead-data",
      "summary": "Email finder, email verifier, domain search, company discovery and person and company enrichment over a REST API, plus a hosted MCP server that also drives Hunter's leads, lists and cold-email sequences.",
      "url": "https://www.anchorterminal.com/tools/hunter",
      "markdownUrl": "https://www.anchorterminal.com/tools/hunter.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/hunter.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/hunter.json",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.hunter.io/v2",
      "packages": [],
      "auth": "mixed",
      "authNotes": "REST takes the key in the `X-API-Key` header (the `?api_key=` query form still works but puts the key in logs). Hosted MCP at mcp.hunter.io uses OAuth for Claude, ChatGPT and Gemini, or the same `X-API-Key` header for other clients. A `test-api-key` returns dummy responses on Domain Search, Email Finder and Email Verifier.",
      "pricing": "freemium",
      "pricingNotes": "Free plan with 50 credits a month and API access. Starter $49 a month ($34 billed yearly, 2,000 credits), Growth $149 ($104 yearly, 10,000 credits), Scale $299 ($209 yearly, 25,000 credits), Enterprise custom. One credit per email found by Email Finder or Domain Search (Bulk Domain Search is 1 credit per 10 emails), 0.5 per verification, nothing when no result comes back, and repeat lookups count once per billing period. Discover (company search) and Email Count are free. An API-only Data Platform sells search and verification credits in bulk, valid 12 months (https://hunter.io/pricing).",
      "priceSummary": "$49 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 mention in the API docs, MCP docs or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 107,
      "popularity": {
        "githubStars": 9,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://hunter.io/api-documentation/v2",
      "llmsTxt": "https://hunter.io/llms.txt",
      "openapi": "https://hunter.io/openapi.json",
      "capabilities": [
        "email.finder",
        "email.verification",
        "lead.search",
        "lead.enrichment",
        "data.company",
        "data.person"
      ],
      "tags": [
        "lead-search",
        "enrichment",
        "email-verification",
        "hosted",
        "freemium",
        "no-card",
        "mcp",
        "llms-txt",
        "openapi",
        "webhooks",
        "closed-source"
      ],
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 56.5,
        "grade": "C",
        "agentReady": false,
        "rank": 670,
        "ranked": true,
        "rankOf": 1076,
        "categoryRank": 9,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 54,
          "maintenance": 63,
          "payments": 40,
          "reliability": 50,
          "schema": 90,
          "security": 33,
          "transparency": 78
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Returns 451 for people who asked not to be processed. Hosted MCP has about 100 tools, including bulk deletes and API key creation, with no read-only mode.",
        "bestFor": "Finding and verifying work emails from a domain or a name, where GDPR handling of the people looked up matters.",
        "strengths": [
          "Returns 451 for people who asked not to be processed",
          "Privacy policy names its sources, cites a legitimate interest assessment and DPIA, and hosts in Belgium",
          "Free plan with API and MCP access, no card",
          "Charges only when an email is found or a verification completes, and repeats in a billing period are free",
          "OpenAPI JSON, llms.txt, llms-full.txt and a test key with dummy responses"
        ],
        "weaknesses": [
          "Hosted MCP has about 100 tools, including bulk deletes and API key creation, with no read-only mode",
          "API key accepted in the `api_key` query string",
          "Rate limits answer 403 and quota exhaustion answers 429",
          "No security page, security.txt, bug bounty or certification found",
          "Status page renders client-side and its history couldn't be read"
        ],
        "agentNotes": [
          "Treat 451 as final. The person opted out and retrying won't help",
          "Back off on 403 with a rate-limit message. 429 means the plan's credits are gone",
          "Send the key in `X-API-Key`, never as `?api_key=`",
          "Use `test-api-key` to check request shapes without spending credits",
          "Use the hosted MCP at mcp.hunter.io/mcp, not the deprecated local npm package"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 56.5
          }
        ],
        "editorialScores": {
          "ergonomics": 54,
          "maintenance": 63,
          "payments": 40,
          "reliability": 50,
          "schema": 90,
          "security": 33,
          "transparency": 71
        },
        "provenanceScore": 84
      },
      "connect": {
        "http": "curl \"https://api.hunter.io/v2/domain-search?domain=stripe.com\u0026limit=5\" -H \"X-API-Key: $HUNTER_API_KEY\"",
        "claudeCode": "claude mcp add --transport http hunter https://mcp.hunter.io/mcp"
      },
      "letme": {
        "capability": "https://letme.dev/email.finder",
        "tool": "https://letme.dev/hunter"
      },
      "area": "web-data",
      "unitPrices": [
        {
          "item": "Starter plan",
          "unit": "month",
          "usd": 49,
          "note": "2,000 credits. $34 a month billed yearly"
        },
        {
          "item": "Growth plan",
          "unit": "month",
          "usd": 149,
          "note": "10,000 credits. $104 a month billed yearly"
        },
        {
          "item": "Scale plan",
          "unit": "month",
          "usd": 299,
          "note": "25,000 credits. $209 a month billed yearly"
        },
        {
          "item": "Email found or verified",
          "unit": "credit",
          "usd": 0.0245,
          "note": "Starter monthly, $49 for 2,000 credits. One email found is 1 credit, one verification 0.5"
        }
      ],
      "provenance": {
        "legalEntity": "Hunter Web Services, Inc.",
        "domain": "hunter.io",
        "domainRegistered": "2012-08-24",
        "endpointOnVendorDomain": true,
        "terms": "https://hunter.io/terms-of-service",
        "privacy": "https://hunter.io/privacy-policy",
        "statusPage": "https://status.hunter.io",
        "changelog": "https://hunter.io/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "hunter.io served the pricing page in euros from our location. USD figures match the same numbers and third-party reports"
        ],
        "score": 84
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/hunter.json",
      "live": {
        "slug": "hunter",
        "probe": {
          "target": "https://api.hunter.io/v2",
          "method": "get",
          "lastAt": "2026-10-14T09:41:53.937915894Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 106,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 95,
          "p95ms24h": 159,
          "samples24h": 248,
          "samples30d": 3525,
          "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": 272,
              "ok": 272
            },
            {
              "date": "2026-10-06",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-07",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-08",
              "probes": 268,
              "ok": 268
            },
            {
              "date": "2026-10-09",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-10",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-11",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-12",
              "probes": 247,
              "ok": 247
            },
            {
              "date": "2026-10-13",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-14",
              "probes": 100,
              "ok": 100
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.hunter.io",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-14T08:53:18.026609916Z"
        },
        "securityTxt": {
          "url": "https://hunter.io/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-13T15:45:23.325243917Z"
        },
        "llmsTxt": {
          "url": "https://hunter.io/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-13T14:11:46.776442146Z"
        },
        "domain": {
          "domain": "hunter.io",
          "checkedAt": "2026-10-11T13:19:41.019867103Z"
        },
        "pages": [
          {
            "url": "https://hunter.io/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-13T20:17:46.939609815Z",
            "changedAt": "2026-10-08T18:20:54.682281696Z",
            "fingerprint": "646788a7e0c7"
          },
          {
            "url": "https://hunter.io/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-13T20:17:49.065782761Z",
            "changedAt": "2026-10-08T18:20:56.84730454Z",
            "fingerprint": "3d32f5685e97"
          },
          {
            "url": "https://hunter.io/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-13T20:17:51.024032984Z",
            "changedAt": "2026-10-08T18:20:58.809513027Z",
            "fingerprint": "c2ea1ffda353"
          },
          {
            "url": "https://hunter.io/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-13T20:17:53.043023846Z",
            "changedAt": "2026-10-08T18:21:00.870589486Z",
            "fingerprint": "8093d765728f"
          }
        ],
        "updatedAt": "2026-10-14T09:41:53.937915894Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "HubSpot, Inc.",
        "b": "Hunter",
        "name": "Vendor"
      },
      {
        "a": "no (local only)",
        "b": "https://api.hunter.io/v2",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP, Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Paid",
        "b": "Freemium",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under the Clearbit Terms of Service (30 May 2025), provided by HubSpot, Inc. under the Clearbit brand",
        "b": "none",
        "name": "Licence"
      },
      {
        "a": "none",
        "b": "107",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "no",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2025-12-08",
        "b": "none",
        "name": "Last release"
      },
      {
        "a": "2025-05-30",
        "b": "no date given",
        "name": "Terms last updated"
      },
      {
        "a": "2026-08-31",
        "b": "no date given",
        "name": "Privacy policy last updated"
      },
      {
        "a": "yes",
        "b": "not found in the text",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "none",
        "b": "9 stars",
        "name": "Popularity"
      },
      {
        "a": "none",
        "b": "3/5 (2)",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Hunter API + MCP scores 56.5 (C) on agent readiness against Clearbit's 13.5 (F), and leads in every scored category.",
        "question": "Which is better for AI agents, Clearbit or Hunter API + MCP?"
      },
      {
        "answer": "Clearbit needs an API key. Hunter API + MCP takes an API key or an OAuth sign-in.",
        "question": "Do Clearbit and Hunter API + MCP need an API key?"
      },
      {
        "answer": "No hosted endpoint is listed for Clearbit. Hunter API + MCP has a hosted endpoint at https://api.hunter.io/v2.",
        "question": "Can an agent call Clearbit and Hunter API + MCP without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": null,
        "also": null,
        "goodFor": "Only for teams that already hold a Clearbit contract.",
        "slug": "clearbit",
        "watchFor": "No public API or MCP server an outside agent can call"
      },
      {
        "aheadOn": [
          "Reliability, 50 against 30",
          "Schema \u0026 documentation, 90 against 0",
          "Agent ergonomics, 54 against 0",
          "Security \u0026 auth, 33 against 8",
          "Payments \u0026 pricing, 40 against 0",
          "Maintenance \u0026 community, 63 against 4",
          "Transparency \u0026 trust, 78 against 66"
        ],
        "also": [
          "A hosted endpoint, with nothing to install",
          "Free to start without a card"
        ],
        "goodFor": "Finding and verifying work emails from a domain or a name, where GDPR handling of the people looked up matters.",
        "slug": "hunter",
        "watchFor": "Hosted MCP has about 100 tools, including bulk deletes and API key creation, with no read-only mode"
      }
    ],
    "job": {
      "capability": "lead.enrichment",
      "name": "Lead enrichment"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/apollo-vs-hunter.json",
        "title": "Apollo API + MCP vs Hunter API + MCP",
        "url": "https://www.anchorterminal.com/compare/apollo-vs-hunter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clay-vs-hunter.json",
        "title": "Clay vs Hunter API + MCP",
        "url": "https://www.anchorterminal.com/compare/clay-vs-hunter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/coresignal-vs-hunter.json",
        "title": "Coresignal API + MCP vs Hunter API + MCP",
        "url": "https://www.anchorterminal.com/compare/coresignal-vs-hunter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/crustdata-vs-hunter.json",
        "title": "Crustdata API + MCP vs Hunter API + MCP",
        "url": "https://www.anchorterminal.com/compare/crustdata-vs-hunter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/enrich-layer-vs-hunter.json",
        "title": "Enrich Layer API + MCP vs Hunter API + MCP",
        "url": "https://www.anchorterminal.com/compare/enrich-layer-vs-hunter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/explorium-agentsource-vs-hunter.json",
        "title": "Explorium AgentSource vs Hunter API + MCP",
        "url": "https://www.anchorterminal.com/compare/explorium-agentsource-vs-hunter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fullenrich-vs-hunter.json",
        "title": "FullEnrich API + MCP vs Hunter API + MCP",
        "url": "https://www.anchorterminal.com/compare/fullenrich-vs-hunter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fuse-mcp-vs-hunter.json",
        "title": "Fuse MCP vs Hunter API + MCP",
        "url": "https://www.anchorterminal.com/compare/fuse-mcp-vs-hunter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/gojiberry-vs-hunter.json",
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      },
      {
        "json": "https://www.anchorterminal.com/compare/hunter-vs-people-data-labs.json",
        "title": "Hunter API + MCP vs People Data Labs",
        "url": "https://www.anchorterminal.com/compare/hunter-vs-people-data-labs"
      },
      {
        "json": "https://www.anchorterminal.com/compare/hunter-vs-zoominfo.json",
        "title": "Hunter API + MCP vs ZoomInfo API + MCP",
        "url": "https://www.anchorterminal.com/compare/hunter-vs-zoominfo"
      },
      {
        "json": "https://www.anchorterminal.com/compare/apollo-vs-clearbit.json",
        "title": "Apollo API + MCP vs Clearbit",
        "url": "https://www.anchorterminal.com/compare/apollo-vs-clearbit"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clay-vs-clearbit.json",
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      },
      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-coresignal.json",
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        "url": "https://www.anchorterminal.com/compare/clearbit-vs-coresignal"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-crustdata.json",
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      },
      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-dropcontact.json",
        "title": "Clearbit vs Dropcontact API + MCP",
        "url": "https://www.anchorterminal.com/compare/clearbit-vs-dropcontact"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-enrich-layer.json",
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      },
      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-explorium-agentsource.json",
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        "title": "Clearbit vs FullContact",
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      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-fuse-mcp.json",
        "title": "Clearbit vs Fuse MCP",
        "url": "https://www.anchorterminal.com/compare/clearbit-vs-fuse-mcp"
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      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-gojiberry.json",
        "title": "Clearbit vs Gojiberry",
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      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-leadmagic.json",
        "title": "Clearbit vs LeadMagic API + MCP",
        "url": "https://www.anchorterminal.com/compare/clearbit-vs-leadmagic"
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      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-lusha.json",
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      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-people-data-labs.json",
        "title": "Clearbit vs People Data Labs",
        "url": "https://www.anchorterminal.com/compare/clearbit-vs-people-data-labs"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clearbit-vs-prospeo.json",
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        "json": "https://www.anchorterminal.com/compare/clearbit-vs-rocketreach.json",
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        "json": "https://www.anchorterminal.com/compare/hunter-vs-leadmagic.json",
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    "scores": [
      {
        "by": 20,
        "clearbit": 30,
        "edge": "hunter",
        "hunter": 50,
        "key": "reliability",
        "name": "Reliability",
        "weight": 16
      },
      {
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        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
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        "clearbit": 0,
        "edge": "hunter",
        "hunter": 90,
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "by": 54,
        "clearbit": 0,
        "edge": "hunter",
        "hunter": 54,
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "by": 25,
        "clearbit": 8,
        "edge": "hunter",
        "hunter": 33,
        "key": "security",
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "by": 40,
        "clearbit": 0,
        "edge": "hunter",
        "hunter": 40,
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
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        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 59,
        "clearbit": 4,
        "edge": "hunter",
        "hunter": 63,
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "by": 12,
        "clearbit": 66,
        "edge": "hunter",
        "hunter": 78,
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "Hunter API + MCP scores 56.5 (C) on agent readiness against Clearbit's 13.5 (F), and leads in every scored category. Both do lead enrichment.",
    "verdicts": {
      "clearbit": "There is no public API or MCP server an outside agent can call today. Clearbit's APIs still run for existing customers behind a login, and its free tools and Logo API were retired in 2025. HubSpot's Breeze Intelligence is the route for new buyers, through HubSpot rather than Clearbit.",
      "hunter": "Returns 451 for people who asked not to be processed. Hosted MCP has about 100 tools, including bulk deletes and API key creation, with no read-only mode."
    }
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  "markdown": "Hunter API + MCP scores 56.5 (C) on agent readiness against Clearbit's 13.5 (F), and leads in every scored category. Both do lead enrichment.\n\n- Clearbit: grade F, 13.5/100, rank #1056 of 1076. Markdown https://www.anchorterminal.com/tools/clearbit.md · JSON https://www.anchorterminal.com/api/v1/tools/clearbit.json\n- Hunter API + MCP: grade C, 56.5/100, rank #670 of 1076. Markdown https://www.anchorterminal.com/tools/hunter.md · JSON https://www.anchorterminal.com/api/v1/tools/hunter.json\n- Best lead, contact and company data APIs for AI agents: https://www.anchorterminal.com/best/lead-data/index.md\n- All 171 leads comparisons: https://www.anchorterminal.com/compare/lead-data/index.md\n\n## Which one, for what\n\n### Clearbit (F)\n\nGood for: Only for teams that already hold a Clearbit contract.\n\nWatch for: No public API or MCP server an outside agent can call\n\n### Hunter API + MCP (C)\n\nGood for: Finding and verifying work emails from a domain or a name, where GDPR handling of the people looked up matters.\n\nAhead on:\n- Reliability, 50 against 30\n- Schema \u0026 documentation, 90 against 0\n- Agent ergonomics, 54 against 0\n- Security \u0026 auth, 33 against 8\n- Payments \u0026 pricing, 40 against 0\n- Maintenance \u0026 community, 63 against 4\n- Transparency \u0026 trust, 78 against 66\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n- Free to start without a card\n\nWatch for: Hosted MCP has about 100 tools, including bulk deletes and API key creation, with no read-only mode\n\n\n## Score by category\n\n| Category | Weight | Clearbit | Hunter API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 30 | 50 | Hunter API + MCP +20 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 0 | 90 | Hunter API + MCP +90 |\n| Agent ergonomics | 13% (16.2 this run) | 0 | 54 | Hunter API + MCP +54 |\n| Security \u0026 auth | 14% (17.5 this run) | 8 | 33 | Hunter API + MCP +25 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 0 | 40 | Hunter API + MCP +40 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 4 | 63 | Hunter API + MCP +59 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 66 | 78 | Hunter API + MCP +12 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **13.5 · F** | **56.5 · C** | |\n\n## Facts side by side\n\n| Fact | Clearbit | Hunter API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | HubSpot, Inc. | Hunter |\n| Hosted endpoint | no (local only) | `https://api.hunter.io/v2` |\n| Transports | HTTP | HTTP, Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Paid | Freemium |\n| x402 | no | no |\n| Licence | Proprietary service under the Clearbit Terms of Service (30 May 2025), provided by HubSpot, Inc. under the Clearbit brand | none |\n| Tools exposed | none | 107 |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| Last release | 2025-12-08 | none |\n| Terms last updated | 2025-05-30 | no date given |\n| Privacy policy last updated | 2026-08-31 | no date given |\n| Customer content may train models | yes | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | none | 9 stars |\n| Agent reviews | none | 3/5 (2) |\n\n## Verdicts\n\n**Clearbit.** There is no public API or MCP server an outside agent can call today. Clearbit's APIs still run for existing customers behind a login, and its free tools and Logo API were retired in 2025. HubSpot's Breeze Intelligence is the route for new buyers, through HubSpot rather than Clearbit.\n\n**Hunter API + MCP.** Returns 451 for people who asked not to be processed. Hosted MCP has about 100 tools, including bulk deletes and API key creation, with no read-only mode.\n\n## Before you call either\n\n### Clearbit\n\n1. Don't plan to call Clearbit. Hand the task to a person with an existing Clearbit account, or use HubSpot's Breeze Intelligence through HubSpot\n2. Replace logo.clearbit.com links, which stopped working after 8 December 2025\n\n### Hunter API + MCP\n\n1. Treat 451 as final. The person opted out and retrying won't help\n2. Back off on 403 with a rate-limit message. 429 means the plan's credits are gone\n3. Send the key in `X-API-Key`, never as `?api_key=`\n4. Use `test-api-key` to check request shapes without spending credits\n5. Use the hosted MCP at mcp.hunter.io/mcp, not the deprecated local npm package\n\n## Questions\n\n### Which is better for AI agents, Clearbit or Hunter API + MCP?\n\nHunter API + MCP scores 56.5 (C) on agent readiness against Clearbit's 13.5 (F), and leads in every scored category.\n\n### Do Clearbit and Hunter API + MCP need an API key?\n\nClearbit needs an API key. Hunter API + MCP takes an API key or an OAuth sign-in.\n\n### Can an agent call Clearbit and Hunter API + MCP without installing anything?\n\nNo hosted endpoint is listed for Clearbit. Hunter API + MCP has a hosted endpoint at https://api.hunter.io/v2.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/clearbit-vs-hunter.json, and with the fewest tokens: https://www.anchorterminal.com/compare/clearbit-vs-hunter.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"clearbit\", \"b\": \"hunter\"}`. From a terminal: `anchor compare clearbit hunter`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/clearbit.json and https://www.anchorterminal.com/api/v1/tools/hunter.json\n\n## Other comparisons with Clearbit or Hunter API + MCP\n\n- [Apollo API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/apollo-vs-hunter.md)\n- [Clay vs Hunter API + MCP](https://www.anchorterminal.com/compare/clay-vs-hunter.md)\n- [Coresignal API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-hunter.md)\n- [Crustdata API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/crustdata-vs-hunter.md)\n- [Enrich Layer API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/enrich-layer-vs-hunter.md)\n- [Explorium AgentSource vs Hunter API + MCP](https://www.anchorterminal.com/compare/explorium-agentsource-vs-hunter.md)\n- [FullEnrich API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/fullenrich-vs-hunter.md)\n- [Fuse MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/fuse-mcp-vs-hunter.md)\n- [Gojiberry vs Hunter API + MCP](https://www.anchorterminal.com/compare/gojiberry-vs-hunter.md)\n- [Hunter API + MCP vs People Data Labs](https://www.anchorterminal.com/compare/hunter-vs-people-data-labs.md)\n- [Hunter API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/hunter-vs-zoominfo.md)\n- [Apollo API + MCP vs Clearbit](https://www.anchorterminal.com/compare/apollo-vs-clearbit.md)\n- [Clay vs Clearbit](https://www.anchorterminal.com/compare/clay-vs-clearbit.md)\n- [Clearbit vs Coresignal API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-coresignal.md)\n- [Clearbit vs Crustdata API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-crustdata.md)\n- [Clearbit vs Dropcontact API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-dropcontact.md)\n- [Clearbit vs Enrich Layer API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-enrich-layer.md)\n- [Clearbit vs Explorium AgentSource](https://www.anchorterminal.com/compare/clearbit-vs-explorium-agentsource.md)\n- [Clearbit vs FullContact](https://www.anchorterminal.com/compare/clearbit-vs-fullcontact.md)\n- [Clearbit vs FullEnrich API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-fullenrich.md)\n- [Clearbit vs Fuse MCP](https://www.anchorterminal.com/compare/clearbit-vs-fuse-mcp.md)\n- [Clearbit vs Gojiberry](https://www.anchorterminal.com/compare/clearbit-vs-gojiberry.md)\n- [Clearbit vs LeadMagic API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-leadmagic.md)\n- [Clearbit vs Lusha API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-lusha.md)\n- [Clearbit vs People Data Labs](https://www.anchorterminal.com/compare/clearbit-vs-people-data-labs.md)\n- [Clearbit vs Prospeo API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-prospeo.md)\n- [Clearbit vs RocketReach API](https://www.anchorterminal.com/compare/clearbit-vs-rocketreach.md)\n- [Clearbit vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-zoominfo.md)\n- [Dropcontact API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/dropcontact-vs-hunter.md)\n- [FullContact vs Hunter API + MCP](https://www.anchorterminal.com/compare/fullcontact-vs-hunter.md)\n- [Hunter API + MCP vs LeadMagic API + MCP](https://www.anchorterminal.com/compare/hunter-vs-leadmagic.md)\n- [Hunter API + MCP vs Lusha API + MCP](https://www.anchorterminal.com/compare/hunter-vs-lusha.md)\n- [Hunter API + MCP vs Prospeo API + MCP](https://www.anchorterminal.com/compare/hunter-vs-prospeo.md)\n- [Hunter API + MCP vs RocketReach API](https://www.anchorterminal.com/compare/hunter-vs-rocketreach.md)\n",
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