{ "data": { "a": { "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": 569, "ranked": true, "rankOf": 842, "categoryRank": 8, "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": "2026-10-09T10:42:45.757127247Z", "lastOk": true, "lastStatus": 404, "lastMs": 184, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 99, "p95ms24h": 154, "samples24h": 260, "samples30d": 2300, "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": 114, "ok": 114 } ] }, "vendorStatus": { "page": "https://status.hunter.io", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:58:03.90460605Z" }, "securityTxt": { "url": "https://hunter.io/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:39:08.451696981Z" }, "llmsTxt": { "url": "https://hunter.io/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:31.703292033Z" }, "domain": { "domain": "hunter.io", "checkedAt": "2026-10-04T13:05:34.738925095Z" }, "pages": [ { "url": "https://hunter.io/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:20:54.682281696Z", "changedAt": "2026-10-08T18:20:54.682281696Z", "fingerprint": "646788a7e0c7" }, { "url": "https://hunter.io/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:20:56.84730454Z", "changedAt": "2026-10-08T18:20:56.84730454Z", "fingerprint": "3d32f5685e97" }, { "url": "https://hunter.io/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:20:58.809513027Z", "changedAt": "2026-10-08T18:20:58.809513027Z", "fingerprint": "c2ea1ffda353" }, { "url": "https://hunter.io/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:21:00.870589486Z", "changedAt": "2026-10-08T18:21:00.870589486Z", "fingerprint": "8093d765728f" } ], "updatedAt": "2026-10-09T10:42:45.757127247Z" } }, "answer": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Hunter API + MCP's 56.5 (C), and leads in 4 of 7 scored categories. Hunter API + MCP leads on schema \u0026 documentation.", "b": { "slug": "zoominfo", "name": "ZoomInfo API + MCP", "vendor": "ZoomInfo Technologies LLC", "vendorUrl": "https://www.zoominfo.com", "kind": "http-api", "category": "lead-data", "summary": "ZoomInfo sells B2B company, contact and buying-signal data. Agents search and enrich records through a REST API with OAuth 2.0, a hosted MCP server and the GTM CLI, all drawing on one credit pool.", "url": "https://www.anchorterminal.com/tools/zoominfo", "markdownUrl": "https://www.anchorterminal.com/tools/zoominfo.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/zoominfo.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/zoominfo.json", "repo": "https://github.com/Zoominfo/gtm-ai-cli", "license": "Proprietary service under ZoomInfo's Licence Terms and Conditions. The GTM CLI on GitHub is MIT", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.zoominfo.com/gtm", "packages": [ { "registry": "npm", "name": "@zoominfo/gtm-ai-cli" } ], "auth": "oauth", "authNotes": "OAuth 2.0 only, with no static API key. A person creates an app in the Developer tab of GTM.ai (self-serve) or the ZoomInfo Developer Portal (Enterprise) and picks from 20 scopes such as `api:data:contact` and `api:audience:manage`. The authorisation code grant with PKCE acts for a signed-in user. The client credentials grant at `https://api.zoominfo.com/gtm/oauth/v1/token` runs as a named integration user, and the sample token lasts 1,000 seconds. The MCP server at `https://mcp.zoominfo.com/mcp` takes OAuth sign-in in a browser, and clients register themselves. Partner apps for other organisations need membership of the partner programme and a review. Admins switch API access on or off per user.", "pricing": "freemium", "pricingNotes": "Free account at gtm.ai with 1,000 data credits and 1,000 AI credits, no card, covering the API, MCP server and CLI at 5 requests a second and 5 apps. After that, pay-as-you-go top-ups from $20 with no contract or seat fee. One data credit buys one newly enriched company, contact or intent record, shown at $0.38 a credit on the $1,000 spend tier, with volume discounts. AI credits are a flat $0.05 each, and an account or contact research call uses about 5 to 15. Search, lookup and similar-record calls are free. Enterprise packages are priced by sales (https://gtm.ai/pricing).", "priceSummary": "$0.38 / credit", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI files, the MCP docs or the pricing page (checked 2026-10-09).", "endpoints": [] }, "toolCount": 26, "popularity": { "githubStars": null, "npmWeekly": 534, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://docs.gtm.ai/docs/overview", "llmsTxt": "https://docs.gtm.ai/llms.txt", "openapi": "https://docs.gtm.ai/openapi/openapi-data-v1.yaml", "capabilities": [ "lead.search", "lead.enrichment", "data.company", "data.person" ], "tags": [ "hosted", "freemium", "mcp", "oauth", "openapi", "llms-txt", "cli", "closed-source", "enterprise", "lead-search", "enrichment", "intent-data", "status-page", "soc2" ], "lastRelease": "2026-10-02", "graded": true, "anchor": { "graded": true, "score": 72.2, "grade": "BB", "agentReady": true, "rank": 106, "ranked": true, "rankOf": 842, "categoryRank": 1, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 71, "maintenance": 76, "payments": 40, "reliability": 87, "schema": 84, "security": 65, "transparency": 75 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": 0, "verdict": "Search, lookup and similar-record calls cost no credits, and a free account with 1,000 data and 1,000 AI credits needs no card. OAuth carries 20 scopes and limits are published per package. The Licence Terms and Conditions bar disclosing benchmark results, and the two documentation sites disagree on batch sizes and rate-limit headers.", "bestFor": "Sales and marketing agents that need company, contact, intent and business-event data from one vendor, with free search before paid enrichment.", "strengths": [ "Free account with 1,000 data credits and 1,000 AI credits, no card, covering the API, MCP server and CLI", "Search, Lookup, Find Similar and Find Recommended Contacts consume no credits. Credits apply to enrichment and AI research", "OAuth 2.0 with PKCE or client credentials and 20 scopes, with read and manage scopes separated", "Rate limits published per package, with `Retry-After` and `X-RateLimit-Rejected-Bucket` on 429. Rejected requests do not consume quota", "Eight public OpenAPI files, `llms.txt` and Markdown twins on both documentation sites" ], "weaknesses": [ "The Licence Terms and Conditions bar disclosing benchmark results and automated access outside ZoomInfo's own tools without written approval", "The documentation disagrees with itself. One page says rate-limit headers are not returned, another lists them. Enrichment batches are 25 on one site and 10 on the other", "No idempotency keys found, and ZoomInfo shows no cost preview before a paid MCP call", "No official SDKs. The docs direct developers to generate a client from the OpenAPI file", "Records Under Management, which makes repeat enrichment free for 12 months, does not apply to the free tier per the pricing page" ], "agentNotes": [ "Call Lookup first and pass the returned IDs to Search. Unknown industry, metro or topic strings are rejected with a 422", "Search before Enrich. Search is free, and each newly enriched record costs one data credit", "Request only the scopes the task needs in the `scope` parameter of the token call. Omitting it grants every scope configured on the app", "On 429 read `X-RateLimit-Rejected-Bucket` and wait for `Retry-After`. An exhausted hourly window can mean a wait of several hundred seconds", "Turn off model training in the AI client before connecting the MCP server. ZoomInfo prohibits MCP data being used for training" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 72.2 } ], "editorialScores": { "ergonomics": 71, "maintenance": 76, "payments": 40, "reliability": 87, "schema": 84, "security": 65, "transparency": 65 }, "provenanceScore": 85 }, "connect": { "install": "npm install -g @zoominfo/gtm-ai-cli", "http": "curl -X POST https://api.zoominfo.com/gtm/oauth/v1/token -u \"$ZOOMINFO_CLIENT_ID:$ZOOMINFO_CLIENT_SECRET\" -H \"Content-Type: application/x-www-form-urlencoded\" -H \"Accept: application/json\" -d \"grant_type=client_credentials\"", "claudeCode": "claude mcp add --transport http zoominfo https://mcp.zoominfo.com/mcp", "config": { "mcpServers": { "zoominfo": { "url": "https://mcp.zoominfo.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/lead.search", "tool": "https://letme.dev/zoominfo" }, "area": "web-data", "unitPrices": [ { "item": "Data credit", "unit": "credit", "usd": 0.38, "note": "One newly enriched company, contact or intent record, at the $1,000 spend tier. Volume discounts apply" }, { "item": "AI credit", "unit": "credit", "usd": 0.05, "note": "Flat rate. Account or contact research usually uses 5 to 15 credits a call" } ], "provenance": { "legalEntity": "ZoomInfo Technologies LLC", "domain": "zoominfo.com", "domainRegistered": "2003-10-16", "endpointOnVendorDomain": true, "terms": "https://www.zoominfo.com/legal/ltc", "privacy": "https://www.zoominfo.com/legal/privacy-policy", "statusPage": "https://status.zoominfo.com", "changelog": "https://gtm.ai/releases", "securityTxt": "unknown", "checked": "2026-10-09", "notes": [ "The Licence Terms and Conditions (version 1 May 2025) name ZoomInfo Technologies LLC, a Delaware limited liability company, as the contracting entity outside the UK, Switzerland and the EEA. They govern services under an ordering document. Which terms a free GTM.ai signup accepts was not established, and the gtm.ai footer links only the website terms of use.", "The privacy policy (updated 13 October 2025, effective 20 October 2025) covers both the people in ZoomInfo's database and customers of the service, and gives 330 W Columbia Way, Floor 8, Vancouver, WA 98660 as the address.", "The API answers at api.zoominfo.com and the MCP server at mcp.zoominfo.com. The developer docs and self-serve signup are on gtm.ai and docs.gtm.ai, a second domain of the vendor's.", "https://www.zoominfo.com/.well-known/security.txt answered HTTP 500 on 2026-10-09, and https://gtm.ai/.well-known/security.txt answered 404.", "RDAP for zoominfo.com gives a registration date of 2003-10-16.", "An Artificial Intelligence Acceptable Use Policy (version 9 April 2026) supplements the terms and bars giving ZoomInfo data to external AI systems that may train on it." ], "score": 85 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/zoominfo.json", "live": { "slug": "zoominfo", "probe": { "target": "https://api.zoominfo.com/gtm", "method": "get", "lastAt": "2026-10-09T10:43:03.380139698Z", "lastOk": true, "lastStatus": 404, "lastMs": 209, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 153, "p95ms24h": 240, "samples24h": 33, "samples30d": 33, "days": [ { "date": "2026-10-09", "probes": 33, "ok": 33 } ] }, "vendorStatus": { "page": "https://status.zoominfo.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-09T10:42:10.781594752Z" }, "updatedAt": "2026-10-09T10:43:03.380139698Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Hunter", "b": "ZoomInfo Technologies LLC", "name": "Vendor" }, { "a": "https://api.hunter.io/v2", "b": "https://api.zoominfo.com/gtm", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary service under ZoomInfo's Licence Terms and Conditions. The GTM CLI on GitHub is MIT", "name": "Licence" }, { "a": "107", "b": "26", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "none", "b": "2026-10-02", "name": "Last release" }, { "a": "no date given", "b": "no date given", "name": "Terms last updated" }, { "a": "no date given", "b": "2025-10-13", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "yes, with an opt-out", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict automated access" }, { "a": "yes", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "9 stars", "b": "534 npm/wk", "name": "Popularity" }, { "a": "3/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Hunter API + MCP's 56.5 (C), and leads in 4 of 7 scored categories. Hunter API + MCP leads on schema \u0026 documentation.", "question": "Which is better for AI agents, Hunter API + MCP or ZoomInfo API + MCP?" }, { "answer": "Hunter API + MCP takes an API key or an OAuth sign-in. ZoomInfo API + MCP uses an OAuth sign-in.", "question": "Do Hunter API + MCP and ZoomInfo API + MCP need an API key?" }, { "answer": "Yes. Hunter API + MCP has a hosted endpoint at https://api.hunter.io/v2 and ZoomInfo API + MCP at https://api.zoominfo.com/gtm.", "question": "Can an agent call Hunter API + MCP and ZoomInfo API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 90 against 84" ], "also": [ "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" }, { "aheadOn": [ "Reliability, 87 against 50", "Agent ergonomics, 71 against 54", "Security \u0026 auth, 65 against 33", "Maintenance \u0026 community, 76 against 63" ], "also": [ "Agent-ready, a grade of BB or better" ], "goodFor": "Sales and marketing agents that need company, contact, intent and business-event data from one vendor, with free search before paid enrichment.", "slug": "zoominfo", "watchFor": "The Licence Terms and Conditions bar disclosing benchmark results and automated access outside ZoomInfo's own tools without written approval" } ], "job": { "capability": "lead.search", "name": "Lead search" }, "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/apollo-vs-zoominfo.json", "title": "Apollo API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-zoominfo" }, { "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/coresignal-vs-zoominfo.json", "title": "Coresignal API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/coresignal-vs-zoominfo" }, { "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/crustdata-vs-zoominfo.json", "title": "Crustdata API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/crustdata-vs-zoominfo" }, { "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/enrich-layer-vs-zoominfo.json", "title": "Enrich Layer API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/enrich-layer-vs-zoominfo" }, { "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/fullenrich-vs-zoominfo.json", "title": "FullEnrich API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/fullenrich-vs-zoominfo" }, { "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/fuse-mcp-vs-zoominfo.json", "title": "Fuse MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/fuse-mcp-vs-zoominfo" }, { "json": "https://www.anchorterminal.com/compare/gojiberry-vs-hunter.json", "title": "Gojiberry vs Hunter API + MCP", "url": "https://www.anchorterminal.com/compare/gojiberry-vs-hunter" }, { "json": "https://www.anchorterminal.com/compare/gojiberry-vs-zoominfo.json", "title": "Gojiberry vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/gojiberry-vs-zoominfo" }, { "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/leadmagic-vs-zoominfo.json", "title": "LeadMagic API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/leadmagic-vs-zoominfo" }, { "json": "https://www.anchorterminal.com/compare/lusha-vs-zoominfo.json", "title": "Lusha API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/lusha-vs-zoominfo" }, { "json": "https://www.anchorterminal.com/compare/people-data-labs-vs-zoominfo.json", "title": "People Data Labs vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/people-data-labs-vs-zoominfo" }, { "json": "https://www.anchorterminal.com/compare/prospeo-vs-zoominfo.json", "title": "Prospeo API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/prospeo-vs-zoominfo" }, { "json": "https://www.anchorterminal.com/compare/dropcontact-vs-hunter.json", "title": "Dropcontact API + MCP vs Hunter API + MCP", "url": "https://www.anchorterminal.com/compare/dropcontact-vs-hunter" }, { "json": "https://www.anchorterminal.com/compare/dropcontact-vs-zoominfo.json", "title": "Dropcontact API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/dropcontact-vs-zoominfo" }, { "json": "https://www.anchorterminal.com/compare/hunter-vs-leadmagic.json", "title": "Hunter API + MCP vs LeadMagic API + MCP", "url": "https://www.anchorterminal.com/compare/hunter-vs-leadmagic" }, { "json": "https://www.anchorterminal.com/compare/hunter-vs-lusha.json", "title": "Hunter API + MCP vs Lusha API + MCP", "url": "https://www.anchorterminal.com/compare/hunter-vs-lusha" }, { "json": "https://www.anchorterminal.com/compare/hunter-vs-prospeo.json", "title": "Hunter API + MCP vs Prospeo API + MCP", "url": "https://www.anchorterminal.com/compare/hunter-vs-prospeo" } ], "scores": [ { "by": 37, "edge": "zoominfo", "hunter": 50, "key": "reliability", "name": "Reliability", "weight": 16, "zoominfo": 87 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 6, "edge": "hunter", "hunter": 90, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13, "zoominfo": 84 }, { "by": 17, "edge": "zoominfo", "hunter": 54, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13, "zoominfo": 71 }, { "by": 32, "edge": "zoominfo", "hunter": 33, "key": "security", "name": "Security \u0026 auth", "weight": 14, "zoominfo": 65 }, { "by": 0, "edge": "", "hunter": 40, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10, "zoominfo": 40 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 13, "edge": "zoominfo", "hunter": 63, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7, "zoominfo": 76 }, { "by": 3, "edge": "hunter", "hunter": 78, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7, "zoominfo": 75 } ], "summary": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Hunter API + MCP's 56.5 (C), and leads in 4 of 7 scored categories. Hunter API + MCP leads on schema \u0026 documentation. Both do lead search.", "verdicts": { "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.", "zoominfo": "Search, lookup and similar-record calls cost no credits, and a free account with 1,000 data and 1,000 AI credits needs no card. OAuth carries 20 scopes and limits are published per package. The Licence Terms and Conditions bar disclosing benchmark results, and the two documentation sites disagree on batch sizes and rate-limit headers." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/hunter-vs-zoominfo", "json": "https://www.anchorterminal.com/compare/hunter-vs-zoominfo.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/hunter-vs-zoominfo.md", "slim": "https://www.anchorterminal.com/compare/hunter-vs-zoominfo.min.md" }, "markdown": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Hunter API + MCP's 56.5 (C), and leads in 4 of 7 scored categories. Hunter API + MCP leads on schema \u0026 documentation. Both do lead search.\n\n- Hunter API + MCP: grade C, 56.5/100, rank #569 of 842. Markdown https://www.anchorterminal.com/tools/hunter.md · JSON https://www.anchorterminal.com/api/v1/tools/hunter.json\n- ZoomInfo API + MCP: grade BB, 72.2/100, rank #106 of 842. Markdown https://www.anchorterminal.com/tools/zoominfo.md · JSON https://www.anchorterminal.com/api/v1/tools/zoominfo.json\n\n## Which one, for what\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- Schema \u0026 documentation, 90 against 84\n\nAlso in its favour:\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### ZoomInfo API + MCP (BB)\n\nGood for: Sales and marketing agents that need company, contact, intent and business-event data from one vendor, with free search before paid enrichment.\n\nAhead on:\n- Reliability, 87 against 50\n- Agent ergonomics, 71 against 54\n- Security \u0026 auth, 65 against 33\n- Maintenance \u0026 community, 76 against 63\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n\nWatch for: The Licence Terms and Conditions bar disclosing benchmark results and automated access outside ZoomInfo's own tools without written approval\n\n\n## Score by category\n\n| Category | Weight | Hunter API + MCP | ZoomInfo API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 50 | 87 | ZoomInfo API + MCP +37 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 90 | 84 | Hunter API + MCP +6 |\n| Agent ergonomics | 13% (16.2 this run) | 54 | 71 | ZoomInfo API + MCP +17 |\n| Security \u0026 auth | 14% (17.5 this run) | 33 | 65 | ZoomInfo API + MCP +32 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 40 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 63 | 76 | ZoomInfo API + MCP +13 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 78 | 75 | Hunter API + MCP +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **56.5 · C** | **72.2 · BB** | |\n\n## Facts side by side\n\n| Fact | Hunter API + MCP | ZoomInfo API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Hunter | ZoomInfo Technologies LLC |\n| Hosted endpoint | `https://api.hunter.io/v2` | `https://api.zoominfo.com/gtm` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | none | Proprietary service under ZoomInfo's Licence Terms and Conditions. The GTM CLI on GitHub is MIT |\n| Tools exposed | 107 | 26 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | none | 2026-10-02 |\n| Terms last updated | no date given | no date given |\n| Privacy policy last updated | no date given | 2025-10-13 |\n| Customer content may train models | not found in the text | yes, with an opt-out |\n| Terms restrict automated access | not found in the text | yes |\n| Terms restrict benchmarking | yes | yes |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 9 stars | 534 npm/wk |\n| Agent reviews | 3/5 (2) | none |\n\n## Verdicts\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**ZoomInfo API + MCP.** Search, lookup and similar-record calls cost no credits, and a free account with 1,000 data and 1,000 AI credits needs no card. OAuth carries 20 scopes and limits are published per package. The Licence Terms and Conditions bar disclosing benchmark results, and the two documentation sites disagree on batch sizes and rate-limit headers.\n\n## Before you call either\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### ZoomInfo API + MCP\n\n1. Call Lookup first and pass the returned IDs to Search. Unknown industry, metro or topic strings are rejected with a 422\n2. Search before Enrich. Search is free, and each newly enriched record costs one data credit\n3. Request only the scopes the task needs in the `scope` parameter of the token call. Omitting it grants every scope configured on the app\n4. On 429 read `X-RateLimit-Rejected-Bucket` and wait for `Retry-After`. An exhausted hourly window can mean a wait of several hundred seconds\n5. Turn off model training in the AI client before connecting the MCP server. ZoomInfo prohibits MCP data being used for training\n\n## Questions\n\n### Which is better for AI agents, Hunter API + MCP or ZoomInfo API + MCP?\n\nZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Hunter API + MCP's 56.5 (C), and leads in 4 of 7 scored categories. Hunter API + MCP leads on schema \u0026 documentation.\n\n### Do Hunter API + MCP and ZoomInfo API + MCP need an API key?\n\nHunter API + MCP takes an API key or an OAuth sign-in. ZoomInfo API + MCP uses an OAuth sign-in.\n\n### Can an agent call Hunter API + MCP and ZoomInfo API + MCP without installing anything?\n\nYes. Hunter API + MCP has a hosted endpoint at https://api.hunter.io/v2 and ZoomInfo API + MCP at https://api.zoominfo.com/gtm.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/hunter-vs-zoominfo.json, and with the fewest tokens: https://www.anchorterminal.com/compare/hunter-vs-zoominfo.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"hunter\", \"b\": \"zoominfo\"}`. From a terminal: `anchor compare hunter zoominfo`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/hunter.json and https://www.anchorterminal.com/api/v1/tools/zoominfo.json\n\n## Other comparisons with Hunter API + MCP or ZoomInfo API + MCP\n\n- [Apollo API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/apollo-vs-hunter.md)\n- [Apollo API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/apollo-vs-zoominfo.md)\n- [Coresignal API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-hunter.md)\n- [Coresignal API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-zoominfo.md)\n- [Crustdata API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/crustdata-vs-hunter.md)\n- [Crustdata API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/crustdata-vs-zoominfo.md)\n- [Enrich Layer API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/enrich-layer-vs-hunter.md)\n- [Enrich Layer API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/enrich-layer-vs-zoominfo.md)\n- [FullEnrich API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/fullenrich-vs-hunter.md)\n- [FullEnrich API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/fullenrich-vs-zoominfo.md)\n- [Fuse MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/fuse-mcp-vs-hunter.md)\n- [Fuse MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/fuse-mcp-vs-zoominfo.md)\n- [Gojiberry vs Hunter API + MCP](https://www.anchorterminal.com/compare/gojiberry-vs-hunter.md)\n- [Gojiberry vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/gojiberry-vs-zoominfo.md)\n- [Hunter API + MCP vs People Data Labs](https://www.anchorterminal.com/compare/hunter-vs-people-data-labs.md)\n- [LeadMagic API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/leadmagic-vs-zoominfo.md)\n- [Lusha API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/lusha-vs-zoominfo.md)\n- [People Data Labs vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/people-data-labs-vs-zoominfo.md)\n- [Prospeo API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/prospeo-vs-zoominfo.md)\n- [Dropcontact API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/dropcontact-vs-hunter.md)\n- [Dropcontact API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/dropcontact-vs-zoominfo.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", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-09", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Hunter API + MCP vs ZoomInfo API + MCP", "url": "" } ], "description": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Hunter API + MCP's 56.5 (C), and leads in 4 of 7 scored categories. Hunter API + MCP leads on schema \u0026 documentation. Both do lead search. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Hunter API + MCP C 56.5", "ZoomInfo API + MCP BB 72.2", "scores" ], "h1": "Hunter API + MCP vs ZoomInfo API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-hunter-vs-zoominfo.png", "path": "/compare/hunter-vs-zoominfo", "published": "2026-10-01", "section": "tools", "title": "Hunter API + MCP vs ZoomInfo API + MCP for AI agents | Anchor Terminal", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/hunter-vs-zoominfo" }, "tokens": { "markdown": 2400, "slim": 680 }, "version": 1 }