{ "data": { "a": { "slug": "coresignal", "name": "Coresignal API + MCP", "vendor": "Coresignal", "vendorUrl": "https://coresignal.com", "kind": "http-api", "category": "lead-data", "summary": "Company, employee and job posting data collected from the public web, queried with filters or Elasticsearch DSL and pulled by ID, with a real-time employee lookup, profile-change webhooks and a natural-language Agentic Search API.", "url": "https://www.anchorterminal.com/tools/coresignal", "markdownUrl": "https://www.anchorterminal.com/tools/coresignal.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/coresignal.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/coresignal.json", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.coresignal.com/cdapi", "packages": [], "auth": "mixed", "authNotes": "`apikey` header on REST. Hosted MCP v2 at mcp.coresignal.com uses OAuth 2.1 through the Coresignal dashboard and looks up the team's key server-side, so no key sits in the client.", "pricing": "paid", "pricingNotes": "7-day free trial with 2,000 credits. Monthly plans Mini $49 (2,500 credits), Starter $199 (12,000), Pro $499 (35,000), Growth $1,000 (150,000), Premium $1,500 (1,000,000), Scale $3,000 (4,000,000), Elite $5,000 (10,000,000). Annual plans are 10 per cent off from Starter up. Search is free. Collecting a record costs 1 credit for jobs and posts, 10 for base or clean company and employee records, 20 for multi-source records, 12 for real-time employee. Agentic Search costs 20 (fast) or 100 (reasoning) (https://coresignal.com/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": 5, "popularity": { "githubStars": 2, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://docs.coresignal.com", "llmsTxt": "https://docs.coresignal.com/llms.txt", "openapi": "https://api.coresignal.com/cdapi/openapi.json", "registryName": "com.coresignal/mcp", "capabilities": [ "lead.search", "lead.enrichment", "email.finder", "data.company", "data.person" ], "tags": [ "lead-search", "enrichment", "hosted", "card-required", "mcp", "llms-txt", "openapi", "webhooks", "async-jobs", "closed-source" ], "lastRelease": "2026-08-07", "graded": true, "anchor": { "graded": true, "score": 62.9, "grade": "B", "agentReady": false, "rank": 373, "ranked": true, "rankOf": 842, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 73, "maintenance": 82, "payments": 20, "reliability": 55, "schema": 86, "security": 58, "transparency": 71 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Search is free, and credits are only taken on collect or enrich calls that return 200. Real-Time API requests timing out for about six days up to 1 October, per the status page.", "bestFor": "Company and workforce research, headcount history and hiring signals at volume, and for pipelines that want raw records.", "strengths": [ "Search is free, and credits are only taken on collect or enrich calls that return 200", "Every plan price and per-endpoint credit cost is public", "Hosted MCP with 5 tools, OAuth 2.1 and a confirmation step before large pulls", "Monthly release notes with dated entries and flagged breaking changes", "Privacy policy covers people in the datasets, with a five-year retention cap" ], "weaknesses": [ "Real-Time API requests timing out for about six days up to 1 October, per the status page", "Main search takes Elasticsearch DSL, a free-form JSON body", "7-day trial with a card per the 30 September check, and no free tier", "Terms name Deeptrace Inc. while the privacy policy names Binary House LLC", "Breaking changes in August 2026 to Agentic Search and Multi-source Jobs, announced in release notes with no stated notice period" ], "agentNotes": [ "Search for IDs first (free), then collect only the records you need", "Use base records at 10 credits when you don't need the 20-credit multi-source fields", "Use MCP v2 at /mcp/v2. The older /mcp endpoint will be deprecated", "Treat a 402 as out of credits, not a transient error", "Expect no work emails for EEA and UK people from the MCP email tool" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 62.9 } ], "editorialScores": { "ergonomics": 73, "maintenance": 82, "payments": 20, "reliability": 55, "schema": 86, "security": 58, "transparency": 55 }, "provenanceScore": 87 }, "connect": { "http": "curl \"https://api.coresignal.com/cdapi/v2/company_multi_source/enrich?enrich_query=stripe.com\" -H \"apikey: $CORESIGNAL_API_KEY\"", "claudeCode": "claude mcp add --transport http coresignal https://mcp.coresignal.com/mcp/v2" }, "letme": { "capability": "https://letme.dev/lead.search", "tool": "https://letme.dev/coresignal" }, "area": "web-data", "unitPrices": [ { "item": "Mini plan", "unit": "month", "usd": 49, "note": "2,500 credits" }, { "item": "Starter plan", "unit": "month", "usd": 199, "note": "12,000 credits" }, { "item": "Pro plan", "unit": "month", "usd": 499, "note": "35,000 credits, adds contact enrichment" }, { "item": "Growth plan", "unit": "month", "usd": 1000, "note": "150,000 credits" }, { "item": "Multi-source company or employee record", "unit": "record", "usd": 0.285, "note": "20 credits at Pro plan rates ($499 for 35,000 credits)" } ], "provenance": { "legalEntity": "Deeptrace Inc.", "domain": "coresignal.com", "domainRegistered": "2014-12-16", "endpointOnVendorDomain": true, "terms": "https://coresignal.com/terms-and-conditions/", "privacy": "https://coresignal.com/privacy-policy/", "statusPage": "https://status.coresignal.com", "changelog": "https://docs.coresignal.com/release-notes", "securityTxt": "none", "checked": "2026-10-01", "notes": [ "The terms and conditions name Deeptrace Inc. (Lewes, Delaware) as the contracting company for Coresignal", "The privacy policy, updated 25 August 2026, names Binary House LLC as the data controller and lists Deeptrace Inc. as a processor" ], "score": 87 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/coresignal.json", "live": { "slug": "coresignal", "probe": { "target": "https://api.coresignal.com/cdapi", "method": "get", "lastAt": "2026-10-09T10:42:40.254169756Z", "lastOk": true, "lastStatus": 404, "lastMs": 146, "authRequired": false, "uptime24h": 100, "uptime30d": 99.13, "p50ms24h": 71, "p95ms24h": 155, "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": 252 }, { "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 } ], "outages": [ { "start": "2026-10-05T05:02:39.72752943Z", "end": "2026-10-05T06:45:00.818712073Z", "note": "HTTP 503 server error" } ] }, "vendorStatus": { "page": "https://status.coresignal.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:57:46.270173658Z" }, "versions": [ { "registry": "mcp-registry", "name": "com.coresignal/mcp", "version": "2.0.0", "seenAt": "2026-10-09T02:57:46.004536428Z" } ], "securityTxt": { "url": "https://coresignal.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:45.822297777Z" }, "llmsTxt": { "url": "https://docs.coresignal.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:16.466638656Z" }, "domain": { "domain": "coresignal.com", "registered": "2014-12-16", "source": "https://rdap.verisign.com/com/v1/domain/coresignal.com", "checkedAt": "2026-10-04T13:03:47.149939456Z" }, "pages": [ { "url": "https://docs.coresignal.com/release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:18:31.957477618Z", "changedAt": "2026-10-08T18:18:31.957477618Z", "fingerprint": "cd2325892a8d" }, { "url": "https://coresignal.com/pricing/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:16:41.093299077Z", "changedAt": "2026-10-08T18:16:41.093299077Z", "fingerprint": "fd5f9df451c4" }, { "url": "https://coresignal.com/privacy-policy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:16:43.191543427Z", "changedAt": "2026-10-02T15:18:35.054977183Z", "fingerprint": "777e30111f81" }, { "url": "https://coresignal.com/terms-and-conditions/", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:16:45.185662309Z", "changedAt": "2026-10-02T15:18:37.038598322Z", "fingerprint": "582fd42b69c8" } ], "updatedAt": "2026-10-09T10:42:40.254169756Z" } }, "answer": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Coresignal API + MCP's 62.9 (B), and leads in 4 of 7 scored categories. Coresignal API + MCP leads on maintenance \u0026 community.", "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": "Coresignal", "b": "ZoomInfo Technologies LLC", "name": "Vendor" }, { "a": "https://api.coresignal.com/cdapi", "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": "Paid", "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": "5", "b": "26", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "com.coresignal/mcp", "b": "not listed", "name": "MCP registry" }, { "a": "2026-08-07", "b": "2026-10-02", "name": "Last release" }, { "a": "2022-02-21", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-08-25", "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": "not found in the text", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "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": "2 stars", "b": "534 npm/wk", "name": "Popularity" }, { "a": "3.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Coresignal API + MCP's 62.9 (B), and leads in 4 of 7 scored categories. Coresignal API + MCP leads on maintenance \u0026 community.", "question": "Which is better for AI agents, Coresignal API + MCP or ZoomInfo API + MCP?" }, { "answer": "Coresignal API + MCP takes an API key or an OAuth sign-in. ZoomInfo API + MCP uses an OAuth sign-in.", "question": "Do Coresignal API + MCP and ZoomInfo API + MCP need an API key?" }, { "answer": "Yes. Coresignal API + MCP has a hosted endpoint at https://api.coresignal.com/cdapi and ZoomInfo API + MCP at https://api.zoominfo.com/gtm.", "question": "Can an agent call Coresignal API + MCP and ZoomInfo API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Maintenance \u0026 community, 82 against 76" ], "also": null, "goodFor": "Company and workforce research, headcount history and hiring signals at volume, and for pipelines that want raw records.", "slug": "coresignal", "watchFor": "Real-Time API requests timing out for about six days up to 1 October, per the status page" }, { "aheadOn": [ "Reliability, 87 against 55", "Security \u0026 auth, 65 against 58", "Payments \u0026 pricing, 40 against 20" ], "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-coresignal.json", "title": "Apollo API + MCP vs Coresignal API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-coresignal" }, { "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-crustdata.json", "title": "Coresignal API + MCP vs Crustdata API + MCP", "url": "https://www.anchorterminal.com/compare/coresignal-vs-crustdata" }, { "json": "https://www.anchorterminal.com/compare/coresignal-vs-enrich-layer.json", "title": "Coresignal API + MCP vs Enrich Layer API + MCP", "url": "https://www.anchorterminal.com/compare/coresignal-vs-enrich-layer" }, { "json": "https://www.anchorterminal.com/compare/coresignal-vs-fullenrich.json", "title": "Coresignal API + MCP vs FullEnrich API + MCP", "url": "https://www.anchorterminal.com/compare/coresignal-vs-fullenrich" }, { "json": "https://www.anchorterminal.com/compare/coresignal-vs-fuse-mcp.json", "title": "Coresignal API + MCP vs Fuse MCP", "url": "https://www.anchorterminal.com/compare/coresignal-vs-fuse-mcp" }, { "json": "https://www.anchorterminal.com/compare/coresignal-vs-gojiberry.json", "title": "Coresignal API + MCP vs Gojiberry", "url": "https://www.anchorterminal.com/compare/coresignal-vs-gojiberry" }, { "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-leadmagic.json", "title": "Coresignal API + MCP vs LeadMagic API + MCP", "url": "https://www.anchorterminal.com/compare/coresignal-vs-leadmagic" }, { "json": "https://www.anchorterminal.com/compare/coresignal-vs-lusha.json", "title": "Coresignal API + MCP vs Lusha API + MCP", "url": "https://www.anchorterminal.com/compare/coresignal-vs-lusha" }, { "json": "https://www.anchorterminal.com/compare/coresignal-vs-people-data-labs.json", "title": "Coresignal API + MCP vs People Data Labs", "url": "https://www.anchorterminal.com/compare/coresignal-vs-people-data-labs" }, { "json": "https://www.anchorterminal.com/compare/coresignal-vs-prospeo.json", "title": "Coresignal API + MCP vs Prospeo API + MCP", "url": "https://www.anchorterminal.com/compare/coresignal-vs-prospeo" }, { "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-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-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-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-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-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/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/coresignal-vs-dropcontact.json", "title": "Coresignal API + MCP vs Dropcontact API + MCP", "url": "https://www.anchorterminal.com/compare/coresignal-vs-dropcontact" }, { "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" } ], "scores": [ { "by": 32, "coresignal": 55, "edge": "zoominfo", "key": "reliability", "name": "Reliability", "weight": 16, "zoominfo": 87 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 2, "coresignal": 86, "edge": "coresignal", "key": "schema", "name": "Schema \u0026 documentation", "weight": 13, "zoominfo": 84 }, { "by": 2, "coresignal": 73, "edge": "coresignal", "key": "ergonomics", "name": "Agent ergonomics", "weight": 13, "zoominfo": 71 }, { "by": 7, "coresignal": 58, "edge": "zoominfo", "key": "security", "name": "Security \u0026 auth", "weight": 14, "zoominfo": 65 }, { "by": 20, "coresignal": 20, "edge": "zoominfo", "key": "payments", "name": "Payments \u0026 pricing", "weight": 10, "zoominfo": 40 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 6, "coresignal": 82, "edge": "coresignal", "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7, "zoominfo": 76 }, { "by": 4, "coresignal": 71, "edge": "zoominfo", "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7, "zoominfo": 75 } ], "summary": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Coresignal API + MCP's 62.9 (B), and leads in 4 of 7 scored categories. Coresignal API + MCP leads on maintenance \u0026 community. Both do lead search.", "verdicts": { "coresignal": "Search is free, and credits are only taken on collect or enrich calls that return 200. Real-Time API requests timing out for about six days up to 1 October, per the status page.", "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/coresignal-vs-zoominfo", "json": "https://www.anchorterminal.com/compare/coresignal-vs-zoominfo.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/coresignal-vs-zoominfo.md", "slim": "https://www.anchorterminal.com/compare/coresignal-vs-zoominfo.min.md" }, "markdown": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Coresignal API + MCP's 62.9 (B), and leads in 4 of 7 scored categories. Coresignal API + MCP leads on maintenance \u0026 community. Both do lead search.\n\n- Coresignal API + MCP: grade B, 62.9/100, rank #373 of 842. Markdown https://www.anchorterminal.com/tools/coresignal.md · JSON https://www.anchorterminal.com/api/v1/tools/coresignal.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### Coresignal API + MCP (B)\n\nGood for: Company and workforce research, headcount history and hiring signals at volume, and for pipelines that want raw records.\n\nAhead on:\n- Maintenance \u0026 community, 82 against 76\n\nWatch for: Real-Time API requests timing out for about six days up to 1 October, per the status page\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 55\n- Security \u0026 auth, 65 against 58\n- Payments \u0026 pricing, 40 against 20\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 | Coresignal API + MCP | ZoomInfo API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 55 | 87 | ZoomInfo API + MCP +32 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 86 | 84 | Coresignal API + MCP +2 |\n| Agent ergonomics | 13% (16.2 this run) | 73 | 71 | Coresignal API + MCP +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 58 | 65 | ZoomInfo API + MCP +7 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 40 | ZoomInfo API + MCP +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 82 | 76 | Coresignal API + MCP +6 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 71 | 75 | ZoomInfo API + MCP +4 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **62.9 · B** | **72.2 · BB** | |\n\n## Facts side by side\n\n| Fact | Coresignal API + MCP | ZoomInfo API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Coresignal | ZoomInfo Technologies LLC |\n| Hosted endpoint | `https://api.coresignal.com/cdapi` | `https://api.zoominfo.com/gtm` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth |\n| Pricing | Paid | 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 | 5 | 26 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `com.coresignal/mcp` | not listed |\n| Last release | 2026-08-07 | 2026-10-02 |\n| Terms last updated | 2022-02-21 | no date given |\n| Privacy policy last updated | 2026-08-25 | 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 | not found in the text | yes |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 2 stars | 534 npm/wk |\n| Agent reviews | 3.5/5 (2) | none |\n\n## Verdicts\n\n**Coresignal API + MCP.** Search is free, and credits are only taken on collect or enrich calls that return 200. Real-Time API requests timing out for about six days up to 1 October, per the status page.\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### Coresignal API + MCP\n\n1. Search for IDs first (free), then collect only the records you need\n2. Use base records at 10 credits when you don't need the 20-credit multi-source fields\n3. Use MCP v2 at /mcp/v2. The older /mcp endpoint will be deprecated\n4. Treat a 402 as out of credits, not a transient error\n5. Expect no work emails for EEA and UK people from the MCP email tool\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, Coresignal API + MCP or ZoomInfo API + MCP?\n\nZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Coresignal API + MCP's 62.9 (B), and leads in 4 of 7 scored categories. Coresignal API + MCP leads on maintenance \u0026 community.\n\n### Do Coresignal API + MCP and ZoomInfo API + MCP need an API key?\n\nCoresignal 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 Coresignal API + MCP and ZoomInfo API + MCP without installing anything?\n\nYes. Coresignal API + MCP has a hosted endpoint at https://api.coresignal.com/cdapi 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/coresignal-vs-zoominfo.json, and with the fewest tokens: https://www.anchorterminal.com/compare/coresignal-vs-zoominfo.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"coresignal\", \"b\": \"zoominfo\"}`. From a terminal: `anchor compare coresignal zoominfo`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/coresignal.json and https://www.anchorterminal.com/api/v1/tools/zoominfo.json\n\n## Other comparisons with Coresignal API + MCP or ZoomInfo API + MCP\n\n- [Apollo API + MCP vs Coresignal API + MCP](https://www.anchorterminal.com/compare/apollo-vs-coresignal.md)\n- [Apollo API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/apollo-vs-zoominfo.md)\n- [Coresignal API + MCP vs Crustdata API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-crustdata.md)\n- [Coresignal API + MCP vs Enrich Layer API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-enrich-layer.md)\n- [Coresignal API + MCP vs FullEnrich API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-fullenrich.md)\n- [Coresignal API + MCP vs Fuse MCP](https://www.anchorterminal.com/compare/coresignal-vs-fuse-mcp.md)\n- [Coresignal API + MCP vs Gojiberry](https://www.anchorterminal.com/compare/coresignal-vs-gojiberry.md)\n- [Coresignal API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-hunter.md)\n- [Coresignal API + MCP vs LeadMagic API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-leadmagic.md)\n- [Coresignal API + MCP vs Lusha API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-lusha.md)\n- [Coresignal API + MCP vs People Data Labs](https://www.anchorterminal.com/compare/coresignal-vs-people-data-labs.md)\n- [Coresignal API + MCP vs Prospeo API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-prospeo.md)\n- [Crustdata API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/crustdata-vs-zoominfo.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 ZoomInfo API + MCP](https://www.anchorterminal.com/compare/fullenrich-vs-zoominfo.md)\n- [Fuse MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/fuse-mcp-vs-zoominfo.md)\n- [Gojiberry vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/gojiberry-vs-zoominfo.md)\n- [Hunter API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/hunter-vs-zoominfo.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- [Coresignal API + MCP vs Dropcontact API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-dropcontact.md)\n- [Dropcontact API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/dropcontact-vs-zoominfo.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": "Coresignal API + MCP vs ZoomInfo API + MCP", "url": "" } ], "description": "ZoomInfo API + MCP scores 72.2 (BB) on agent readiness against Coresignal API + MCP's 62.9 (B), and leads in 4 of 7 scored categories. Coresignal API + MCP leads on maintenance \u0026 community. Both do lead search. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Coresignal API + MCP B 62.9", "ZoomInfo API + MCP BB 72.2", "scores" ], "h1": "Coresignal API + MCP vs ZoomInfo API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-coresignal-vs-zoominfo.png", "path": "/compare/coresignal-vs-zoominfo", "published": "2026-10-01", "section": "tools", "title": "Coresignal API + MCP vs ZoomInfo API + MCP for AI agents", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/coresignal-vs-zoominfo" }, "tokens": { "markdown": 2500, "slim": 680 }, "version": 1 }