{ "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": 439, "ranked": true, "rankOf": 1076, "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": "2026-10-14T09:41:47.335933501Z", "lastOk": true, "lastStatus": 404, "lastMs": 79, "authRequired": false, "uptime24h": 100, "uptime30d": 99.43, "p50ms24h": 73, "p95ms24h": 164, "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": 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": 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 } ], "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": "2026-10-14T08:53:00.144677379Z" }, "versions": [ { "registry": "mcp-registry", "name": "com.coresignal/mcp", "version": "2.0.0", "seenAt": "2026-10-14T04:18:30.41681267Z" } ], "securityTxt": { "url": "https://coresignal.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-13T15:46:00.661972625Z" }, "llmsTxt": { "url": "https://docs.coresignal.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-13T14:11:18.857318849Z" }, "domain": { "domain": "coresignal.com", "registered": "2014-12-16", "source": "https://rdap.verisign.com/com/v1/domain/coresignal.com", "checkedAt": "2026-10-11T13:14:49.851889147Z" }, "pages": [ { "url": "https://docs.coresignal.com/release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-13T20:14:31.51510425Z", "changedAt": "2026-10-08T18:18:31.957477618Z", "fingerprint": "cd2325892a8d" }, { "url": "https://coresignal.com/pricing/", "kind": "pricing", "status": 304, "checkedAt": "2026-10-13T20:11:58.286462854Z", "changedAt": "2026-10-09T18:34:22.355790651Z", "fingerprint": "ecc8378af48a" }, { "url": "https://coresignal.com/privacy-policy/", "kind": "privacy", "status": 304, "checkedAt": "2026-10-13T20:12:00.369114149Z", "changedAt": "2026-10-02T15:18:35.054977183Z", "fingerprint": "777e30111f81" }, { "url": "https://coresignal.com/terms-and-conditions/", "kind": "terms", "status": 304, "checkedAt": "2026-10-13T20:12:02.381515279Z", "changedAt": "2026-10-02T15:18:37.038598322Z", "fingerprint": "582fd42b69c8" } ], "updatedAt": "2026-10-14T09:41:47.335933501Z" } }, "answer": "Coresignal API + MCP scores 62.9 (B) on agent readiness against FullContact's 51.8 (D), and leads in 5 of 7 scored categories. FullContact leads on reliability.", "b": { "slug": "fullcontact", "name": "FullContact", "vendor": "J2 Martech Corp. (FullContact, a Ziff Davis company)", "vendorUrl": "https://www.fullcontact.com", "kind": "http-api", "category": "lead-data", "summary": "FullContact is an identity resolution and enrichment service that matches an email, phone, social profile or name and address to a person in its identity graph, through a v3 REST API and a hosted MCP server.", "url": "https://www.anchorterminal.com/tools/fullcontact", "markdownUrl": "https://www.anchorterminal.com/tools/fullcontact.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/fullcontact.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/fullcontact.json", "repo": "https://github.com/fullcontact/fullcontact-python-client", "license": "Proprietary service under the FullContact Terms of Use and Services Agreement. Client libraries on GitHub", "transports": [ "http" ], "remoteUrl": "https://api.fullcontact.com/v3", "packages": [ { "registry": "pypi", "name": "python-fullcontact" } ], "auth": "api-key", "authNotes": "Bearer API key generated in the FullContact Platform (platform.fullcontact.com), shown once and revocable. Keys carry product entitlements, and the MCP server needs one with person.enrich enabled. The MCP server at https://api.fullcontact.com/v3/mcp takes the same key in the Authorization header, with no OAuth. Sandbox keys are accepted for evaluation (https://docs.fullcontact.com/docs/authentication).", "pricing": "paid", "pricingNotes": "No public prices. The pricing page says \"Pay for Matches, Not Lookups\" and asks visitors to talk to an expert. Accounts can be created for free in the Platform, and the MCP FAQ says a miss (not_found) counts as a call but not a match (https://www.fullcontact.com/pricing/, https://docs.fullcontact.com/docs/errors-and-faq, checked 2026-10-14).", "priceSummary": "Paid", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, llms.txt or the pricing page (checked 2026-10-14).", "endpoints": [] }, "toolCount": 1, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-14" }, "docsUrl": "https://docs.fullcontact.com", "llmsTxt": "https://docs.fullcontact.com/llms.txt", "capabilities": [ "lead.enrichment" ], "tags": [ "hosted", "mcp", "api-key", "llms-txt", "sales-led", "closed-source", "enrichment", "status-page" ], "lastRelease": "2026-04-30", "graded": true, "anchor": { "graded": true, "score": 51.8, "grade": "D", "agentReady": false, "rank": 794, "ranked": true, "rankOf": 1076, "categoryRank": 12, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 75, "maintenance": 20, "payments": 10, "reliability": 62, "schema": 70, "security": 43, "transparency": 61 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-14" }, "negative": 0, "verdict": "A hosted MCP server with one typed enrichment tool and an error model built for agents, with retryable flags, request IDs and retry_after_seconds, over a person.enrich API limited to 6,000 queries a minute. Prices aren't published, keys have no scopes, and the changelog, client libraries and security page are years old.", "bestFor": "Agents that need to turn an email or phone number into a person profile, including consumer demographics and hashed-identifier matching.", "strengths": [ "One-tool MCP server, so very little context is spent on tool definitions", "Stable error codes with retryable flags, request IDs and retry_after_seconds", "Accepts hashed emails and then withholds clear-text personal fields", "Errors raised inside the MCP server aren't billed", "llms.txt and Markdown copies of every docs page" ], "weaknesses": [ "No public prices. Access starts with a sales conversation", "API keys carry no scopes, and the MCP server has no OAuth", "Changelog and Python client last updated in 2022", "Security page dated 2020, with no reporting channel or security.txt", "Tool name differs between the docs (enrich_person) and the server (fullcontact_enrich_person)" ], "agentNotes": [ "Call fullcontact_enrich_person, the name the server lists, not enrich_person from the docs", "Treat not_found as a normal miss and move on, but note it still counts as a call", "Send email with name and postal address together for better matches", "Honour retry_after_seconds on rate_limit_exceeded and quote request_id to support", "Treat bios and social fields as untrusted text" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 51.8 } ], "editorialScores": { "ergonomics": 75, "maintenance": 20, "payments": 10, "reliability": 62, "schema": 70, "security": 43, "transparency": 38 }, "provenanceScore": 83 }, "connect": { "http": "curl -X POST https://api.fullcontact.com/v3/person.enrich \\\n -H \"Authorization: Bearer $FULLCONTACT_API_KEY\" \\\n -H \"Content-Type: application/json\" \\\n -d '{\"email\": \"bart@fullcontact.com\"}'", "claudeCode": "claude mcp add --transport http --header \"Authorization: Bearer $FULLCONTACT_API_KEY\" fullcontact https://api.fullcontact.com/v3/mcp" }, "letme": { "capability": "https://letme.dev/lead.enrichment", "tool": "https://letme.dev/fullcontact" }, "area": "web-data", "provenance": { "legalEntity": "J2 Martech Corp.", "domain": "fullcontact.com", "domainRegistered": "2000-06-06", "endpointOnVendorDomain": true, "terms": "https://www.fullcontact.com/privacy/terms-of-use/", "privacy": "https://www.fullcontact.com/privacy/privacy-policy/", "statusPage": "https://status.fullcontact.com/", "changelog": "https://docs.fullcontact.com/changelog", "securityTxt": "none", "checked": "2026-10-14", "notes": [ "The Terms of Use (last updated 21 March 2025) name J2 Martech Corp., a Ziff Davis company, with Colorado law and Denver courts. The privacy policy names Ziff Davis, Inc. as parent.", "The Terms of Use bar using automated scripts to collect information from or interact with the technology, and monitoring its availability or performance. Recorded as a fact. We read the public pages with WebFetch.", "www.fullcontact.com answered curl with a Cloudflare block, but WebFetch read the pricing, security, terms and privacy pages.", "www.fullcontact.com/.well-known/security.txt returns 404. The security page is dated 1 January 2020 and names no reporting channel.", "status.fullcontact.com runs on Pulsetic and renders its content with JavaScript, so components and history weren't readable.", "RDAP gives fullcontact.com a registration date of 2000-06-06." ], "score": 83 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/fullcontact.json", "live": { "slug": "fullcontact", "probe": { "target": "https://api.fullcontact.com/v3", "method": "get", "lastAt": "2026-10-14T09:41:51.662106073Z", "lastOk": true, "lastStatus": 404, "lastMs": 330, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 334, "p95ms24h": 502, "samples24h": 17, "samples30d": 17, "days": [ { "date": "2026-10-14", "probes": 17, "ok": 17 } ] }, "vendorStatus": { "page": "https://status.fullcontact.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-14T08:53:12.690850544Z" }, "updatedAt": "2026-10-14T09:41:51.662106073Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Coresignal", "b": "J2 Martech Corp. (FullContact, a Ziff Davis company)", "name": "Vendor" }, { "a": "https://api.coresignal.com/cdapi", "b": "https://api.fullcontact.com/v3", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "API key", "name": "Auth" }, { "a": "Paid", "b": "Paid", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary service under the FullContact Terms of Use and Services Agreement. Client libraries on GitHub", "name": "Licence" }, { "a": "5", "b": "1", "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": "2026-04-30", "name": "Last release" }, { "a": "2022-02-21", "b": "2025-03-21", "name": "Terms last updated" }, { "a": "2026-08-25", "b": "2026-10-01", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "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": "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": "2 stars", "b": "none", "name": "Popularity" }, { "a": "3.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Coresignal API + MCP scores 62.9 (B) on agent readiness against FullContact's 51.8 (D), and leads in 5 of 7 scored categories. FullContact leads on reliability.", "question": "Which is better for AI agents, Coresignal API + MCP or FullContact?" }, { "answer": "Coresignal API + MCP takes an API key or an OAuth sign-in. FullContact needs an API key.", "question": "Do Coresignal API + MCP and FullContact need an API key?" }, { "answer": "Yes. Coresignal API + MCP has a hosted endpoint at https://api.coresignal.com/cdapi and FullContact at https://api.fullcontact.com/v3.", "question": "Can an agent call Coresignal API + MCP and FullContact without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 86 against 70", "Security \u0026 auth, 58 against 43", "Payments \u0026 pricing, 20 against 10", "Maintenance \u0026 community, 82 against 20", "Transparency \u0026 trust, 71 against 61" ], "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, 62 against 55" ], "also": null, "goodFor": "Agents that need to turn an email or phone number into a person profile, including consumer demographics and hashed-identifier matching.", "slug": "fullcontact", "watchFor": "No public prices. Access starts with a sales conversation" } ], "job": { "capability": "lead.enrichment", "name": "Lead enrichment" }, "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/clay-vs-coresignal.json", "title": "Clay vs Coresignal API + MCP", "url": "https://www.anchorterminal.com/compare/clay-vs-coresignal" }, { "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-explorium-agentsource.json", "title": "Coresignal API + MCP vs Explorium AgentSource", "url": "https://www.anchorterminal.com/compare/coresignal-vs-explorium-agentsource" }, { "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/coresignal-vs-rocketreach.json", "title": "Coresignal API + MCP vs RocketReach API", "url": "https://www.anchorterminal.com/compare/coresignal-vs-rocketreach" }, { "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/apollo-vs-fullcontact.json", "title": "Apollo API + MCP vs FullContact", "url": "https://www.anchorterminal.com/compare/apollo-vs-fullcontact" }, { "json": "https://www.anchorterminal.com/compare/clay-vs-fullcontact.json", "title": "Clay vs FullContact", "url": "https://www.anchorterminal.com/compare/clay-vs-fullcontact" }, { "json": "https://www.anchorterminal.com/compare/clearbit-vs-coresignal.json", "title": "Clearbit vs Coresignal API + MCP", "url": "https://www.anchorterminal.com/compare/clearbit-vs-coresignal" }, { "json": "https://www.anchorterminal.com/compare/clearbit-vs-fullcontact.json", "title": "Clearbit vs FullContact", "url": "https://www.anchorterminal.com/compare/clearbit-vs-fullcontact" }, { "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/crustdata-vs-fullcontact.json", "title": "Crustdata API + MCP vs FullContact", "url": "https://www.anchorterminal.com/compare/crustdata-vs-fullcontact" }, { "json": "https://www.anchorterminal.com/compare/dropcontact-vs-fullcontact.json", "title": "Dropcontact API + MCP vs FullContact", "url": "https://www.anchorterminal.com/compare/dropcontact-vs-fullcontact" }, { "json": "https://www.anchorterminal.com/compare/enrich-layer-vs-fullcontact.json", "title": "Enrich Layer API + MCP vs FullContact", "url": "https://www.anchorterminal.com/compare/enrich-layer-vs-fullcontact" }, { "json": "https://www.anchorterminal.com/compare/explorium-agentsource-vs-fullcontact.json", "title": "Explorium AgentSource vs FullContact", "url": "https://www.anchorterminal.com/compare/explorium-agentsource-vs-fullcontact" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-fullenrich.json", "title": "FullContact vs FullEnrich API + MCP", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-fullenrich" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-fuse-mcp.json", "title": "FullContact vs Fuse MCP", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-fuse-mcp" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-gojiberry.json", "title": "FullContact vs Gojiberry", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-gojiberry" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-hunter.json", "title": "FullContact vs Hunter API + MCP", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-hunter" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-leadmagic.json", "title": "FullContact vs LeadMagic API + MCP", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-leadmagic" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-lusha.json", "title": "FullContact vs Lusha API + MCP", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-lusha" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-people-data-labs.json", "title": "FullContact vs People Data Labs", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-people-data-labs" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-prospeo.json", "title": "FullContact vs Prospeo API + MCP", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-prospeo" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-rocketreach.json", "title": "FullContact vs RocketReach API", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-rocketreach" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-zoominfo.json", "title": "FullContact vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-zoominfo" } ], "scores": [ { "by": 7, "coresignal": 55, "edge": "fullcontact", "fullcontact": 62, "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 16, "coresignal": 86, "edge": "coresignal", "fullcontact": 70, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 2, "coresignal": 73, "edge": "fullcontact", "fullcontact": 75, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "by": 15, "coresignal": 58, "edge": "coresignal", "fullcontact": 43, "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "by": 10, "coresignal": 20, "edge": "coresignal", "fullcontact": 10, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 62, "coresignal": 82, "edge": "coresignal", "fullcontact": 20, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 10, "coresignal": 71, "edge": "coresignal", "fullcontact": 61, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Coresignal API + MCP scores 62.9 (B) on agent readiness against FullContact's 51.8 (D), and leads in 5 of 7 scored categories. FullContact leads on reliability. Both do lead enrichment.", "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.", "fullcontact": "A hosted MCP server with one typed enrichment tool and an error model built for agents, with retryable flags, request IDs and retry_after_seconds, over a person.enrich API limited to 6,000 queries a minute. Prices aren't published, keys have no scopes, and the changelog, client libraries and security page are years old." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/coresignal-vs-fullcontact", "json": "https://www.anchorterminal.com/compare/coresignal-vs-fullcontact.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/coresignal-vs-fullcontact.md", "slim": "https://www.anchorterminal.com/compare/coresignal-vs-fullcontact.min.md" }, "markdown": "Coresignal API + MCP scores 62.9 (B) on agent readiness against FullContact's 51.8 (D), and leads in 5 of 7 scored categories. FullContact leads on reliability. Both do lead enrichment.\n\n- Coresignal API + MCP: grade B, 62.9/100, rank #439 of 1076. Markdown https://www.anchorterminal.com/tools/coresignal.md · JSON https://www.anchorterminal.com/api/v1/tools/coresignal.json\n- FullContact: grade D, 51.8/100, rank #794 of 1076. Markdown https://www.anchorterminal.com/tools/fullcontact.md · JSON https://www.anchorterminal.com/api/v1/tools/fullcontact.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### 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- Schema \u0026 documentation, 86 against 70\n- Security \u0026 auth, 58 against 43\n- Payments \u0026 pricing, 20 against 10\n- Maintenance \u0026 community, 82 against 20\n- Transparency \u0026 trust, 71 against 61\n\nWatch for: Real-Time API requests timing out for about six days up to 1 October, per the status page\n\n### FullContact (D)\n\nGood for: Agents that need to turn an email or phone number into a person profile, including consumer demographics and hashed-identifier matching.\n\nAhead on:\n- Reliability, 62 against 55\n\nWatch for: No public prices. Access starts with a sales conversation\n\n\n## Score by category\n\n| Category | Weight | Coresignal API + MCP | FullContact | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 55 | 62 | FullContact +7 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 86 | 70 | Coresignal API + MCP +16 |\n| Agent ergonomics | 13% (16.2 this run) | 73 | 75 | FullContact +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 58 | 43 | Coresignal API + MCP +15 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 10 | Coresignal API + MCP +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 82 | 20 | Coresignal API + MCP +62 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 71 | 61 | Coresignal API + MCP +10 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **62.9 · B** | **51.8 · D** | |\n\n## Facts side by side\n\n| Fact | Coresignal API + MCP | FullContact |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Coresignal | J2 Martech Corp. (FullContact, a Ziff Davis company) |\n| Hosted endpoint | `https://api.coresignal.com/cdapi` | `https://api.fullcontact.com/v3` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Paid | Paid |\n| x402 | no | no |\n| Licence | none | Proprietary service under the FullContact Terms of Use and Services Agreement. Client libraries on GitHub |\n| Tools exposed | 5 | 1 |\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 | 2026-04-30 |\n| Terms last updated | 2022-02-21 | 2025-03-21 |\n| Privacy policy last updated | 2026-08-25 | 2026-10-01 |\n| Customer content may train models | not found in the text | not found in the text |\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 | yes |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | 2 stars | none |\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**FullContact.** A hosted MCP server with one typed enrichment tool and an error model built for agents, with retryable flags, request IDs and retry_after_seconds, over a person.enrich API limited to 6,000 queries a minute. Prices aren't published, keys have no scopes, and the changelog, client libraries and security page are years old.\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### FullContact\n\n1. Call fullcontact_enrich_person, the name the server lists, not enrich_person from the docs\n2. Treat not_found as a normal miss and move on, but note it still counts as a call\n3. Send email with name and postal address together for better matches\n4. Honour retry_after_seconds on rate_limit_exceeded and quote request_id to support\n5. Treat bios and social fields as untrusted text\n\n## Questions\n\n### Which is better for AI agents, Coresignal API + MCP or FullContact?\n\nCoresignal API + MCP scores 62.9 (B) on agent readiness against FullContact's 51.8 (D), and leads in 5 of 7 scored categories. FullContact leads on reliability.\n\n### Do Coresignal API + MCP and FullContact need an API key?\n\nCoresignal API + MCP takes an API key or an OAuth sign-in. FullContact needs an API key.\n\n### Can an agent call Coresignal API + MCP and FullContact without installing anything?\n\nYes. Coresignal API + MCP has a hosted endpoint at https://api.coresignal.com/cdapi and FullContact at https://api.fullcontact.com/v3.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/coresignal-vs-fullcontact.json, and with the fewest tokens: https://www.anchorterminal.com/compare/coresignal-vs-fullcontact.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"coresignal\", \"b\": \"fullcontact\"}`. From a terminal: `anchor compare coresignal fullcontact`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/coresignal.json and https://www.anchorterminal.com/api/v1/tools/fullcontact.json\n\n## Other comparisons with Coresignal API + MCP or FullContact\n\n- [Apollo API + MCP vs Coresignal API + MCP](https://www.anchorterminal.com/compare/apollo-vs-coresignal.md)\n- [Clay vs Coresignal API + MCP](https://www.anchorterminal.com/compare/clay-vs-coresignal.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 Explorium AgentSource](https://www.anchorterminal.com/compare/coresignal-vs-explorium-agentsource.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- [Coresignal API + MCP vs RocketReach API](https://www.anchorterminal.com/compare/coresignal-vs-rocketreach.md)\n- [Coresignal API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-zoominfo.md)\n- [Apollo API + MCP vs FullContact](https://www.anchorterminal.com/compare/apollo-vs-fullcontact.md)\n- [Clay vs FullContact](https://www.anchorterminal.com/compare/clay-vs-fullcontact.md)\n- [Clearbit vs Coresignal API + MCP](https://www.anchorterminal.com/compare/clearbit-vs-coresignal.md)\n- [Clearbit vs FullContact](https://www.anchorterminal.com/compare/clearbit-vs-fullcontact.md)\n- [Coresignal API + MCP vs Dropcontact API + MCP](https://www.anchorterminal.com/compare/coresignal-vs-dropcontact.md)\n- [Crustdata API + MCP vs FullContact](https://www.anchorterminal.com/compare/crustdata-vs-fullcontact.md)\n- [Dropcontact API + MCP vs FullContact](https://www.anchorterminal.com/compare/dropcontact-vs-fullcontact.md)\n- [Enrich Layer API + MCP vs FullContact](https://www.anchorterminal.com/compare/enrich-layer-vs-fullcontact.md)\n- [Explorium AgentSource vs FullContact](https://www.anchorterminal.com/compare/explorium-agentsource-vs-fullcontact.md)\n- [FullContact vs FullEnrich API + MCP](https://www.anchorterminal.com/compare/fullcontact-vs-fullenrich.md)\n- [FullContact vs Fuse MCP](https://www.anchorterminal.com/compare/fullcontact-vs-fuse-mcp.md)\n- [FullContact vs Gojiberry](https://www.anchorterminal.com/compare/fullcontact-vs-gojiberry.md)\n- [FullContact vs Hunter API + MCP](https://www.anchorterminal.com/compare/fullcontact-vs-hunter.md)\n- [FullContact vs LeadMagic API + MCP](https://www.anchorterminal.com/compare/fullcontact-vs-leadmagic.md)\n- [FullContact vs Lusha API + MCP](https://www.anchorterminal.com/compare/fullcontact-vs-lusha.md)\n- [FullContact vs People Data Labs](https://www.anchorterminal.com/compare/fullcontact-vs-people-data-labs.md)\n- [FullContact vs Prospeo API + MCP](https://www.anchorterminal.com/compare/fullcontact-vs-prospeo.md)\n- [FullContact vs RocketReach API](https://www.anchorterminal.com/compare/fullcontact-vs-rocketreach.md)\n- [FullContact vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/fullcontact-vs-zoominfo.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-14", "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 FullContact", "url": "" } ], "description": "Coresignal scores 62.9 (B) to FullContact's 51.8 (D) for lead enrichment. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Coresignal API + MCP B 62.9", "FullContact D 51.8", "scores" ], "h1": "Coresignal API + MCP vs FullContact", "image": "https://www.anchorterminal.com/assets/og/compare-coresignal-vs-fullcontact.png", "path": "/compare/coresignal-vs-fullcontact", "published": "2026-10-01", "section": "tools", "title": "Coresignal vs FullContact for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-14", "url": "https://www.anchorterminal.com/compare/coresignal-vs-fullcontact" }, "tokens": { "markdown": 2650, "slim": 680 }, "version": 1 }