{ "data": { "a": { "slug": "affinity", "name": "Affinity", "vendor": "Project Affinity, Inc.", "vendorUrl": "https://www.affinity.co", "kind": "http-api", "category": "crm", "summary": "Affinity is a relationship CRM for venture capital and private equity firms, from Project Affinity, Inc. Agents reach it through a versioned REST API with a public OpenAPI file and a hosted MCP server, on the Scale plan and above.", "url": "https://www.anchorterminal.com/tools/affinity", "markdownUrl": "https://www.anchorterminal.com/tools/affinity.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/affinity.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/affinity.json", "license": "Proprietary service under Affinity's master subscription agreement. The `affinity-mcp` package on PyPI is MIT", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://api.affinity.co/v2", "packages": [ { "registry": "pypi", "name": "affinity-mcp" } ], "auth": "mixed", "authNotes": "A paying customer's user makes an API key in Settings, Manage Apps, which needs the Generate an API key permission from the firm's admin. API v2 takes the key as a Bearer token. A key acts with all of its owner's permissions, has no scopes or expiry, can be revoked, and can be tied to an IP allowlist. The hosted MCP server takes OAuth 2.0 through login.affinity.co, with a read-only choice at consent, or the same API key in an `Authorization` header. There is no self-serve signup. Outside developers building for shared customers sign the Affinity Developer Agreement.", "pricing": "paid", "pricingNotes": "From $2,300 a user a year (Scale), the lowest plan with the API and the MCP server. Essential is $2,000 without either, Advanced $2,700, Enterprise on quote, all billed yearly and bought through sales. Scale and Advanced include 100,000 API calls a month, MCP calls counted in, and Enterprise has no monthly cap. No free tier or sandbox was found, and trial accounts can't use the API (https://www.affinity.co/product/affinity-pricing, checked 2026-10-08).", "priceSummary": "$191.67 / seat-mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs, the OpenAPI file or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": 75, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": 268, "asOf": "2026-10-08" }, "docsUrl": "https://developer.affinity.co", "llmsTxt": "https://developer.affinity.co/llms.txt", "openapi": "https://developer.affinity.co/api-reference/openapi.json", "capabilities": [ "crm.records", "crm.pipeline", "crm.activities", "crm.search", "crm.webhooks" ], "tags": [ "hosted", "paid", "sales-led", "mcp", "oauth", "openapi", "llms-txt", "webhooks", "closed-source", "python", "status-page", "soc2", "iso27001", "private-capital" ], "lastRelease": "2026-10-02", "graded": true, "anchor": { "graded": true, "score": 63.4, "grade": "B", "agentReady": false, "rank": 311, "ranked": true, "rankOf": 722, "categoryRank": 6, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 66, "maintenance": 70, "payments": 10, "reliability": 64, "schema": 91, "security": 66, "transparency": 70 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "A public OpenAPI 3.1 file, dated API versions with migration notes and a hosted MCP server with a read-only OAuth scope give an agent a well-documented way in. Access needs a Scale plan at $2,300 a user a year, sold through sales, with no trial that includes the API, and 36 of the 112 v2 operations are marked beta.", "bestFor": "Venture capital, private equity and other private capital firms that already run Affinity and want an agent to read relationship strength, pipeline lists, notes and meetings, then update fields and log notes.", "strengths": [ "Public OpenAPI 3.1.1 files for three dated versions (2024-01-01, 2026-07-15, 2026-09-17), 112 operations in the newest, plus `llms.txt` and Markdown copies of every docs page", "Breaking changes ship only in new dated versions, selected per key or per request with `X-Affinity-Api-Version`, each with written migration steps", "Hosted MCP server at `https://mcp.affinity.co/mcp` takes OAuth with a read-only scope chosen at consent, and admins can switch off any AI client for the whole firm", "Every MCP delete and merge shows what it will affect and waits for confirmation, and the `affinity-mcp` 0.5.1 package sets `readOnlyHint` and `destructiveHint` on its tools", "Dated API changelog with eight entries between 5 August and 2 October 2026" ], "weaknesses": [ "No self-serve access. Every plan button reads Contact sales, the Essential plan has no API, and trial accounts can't call the API", "36 of 112 v2 operations are beta, among them create person, the three search endpoints and webhooks, and the docs say beta endpoints can break without notice or versioning", "API keys carry their owner's full permissions with no per-key scopes or expiry. An IP allowlist is the only narrowing", "No idempotency keys and no Retry-After or backoff guidance found. Scale and Advanced plans stop at 100,000 calls a month across API and MCP", "The hosted MCP server lists 75 tools and skills and returns notes, transcripts and files, with no prompt-injection guidance found", "The published master terms forbid using the product or Affinity Data for machine learning or natural language processing, and forbid publishing benchmarks" ], "agentNotes": [ "Send `X-Affinity-Api-Version: 2026-09-17` on every request, or the key's default version applies. Unauthenticated calls answered as 2024-01-01 when we checked", "Read `x-ratelimit-limit-user-remaining` and `x-ratelimit-limit-org-remaining` on each response. The limits are 900 calls a minute per user and, below Enterprise, 100,000 a month per account, shared by v1, v2 and MCP", "Follow `pagination.nextUrl` for the next page, and pass `fieldIds` or `fieldTypes` so list calls return only the fields needed", "Check for duplicates before a create. There are no idempotency keys, so a retried POST can make a second record", "For MCP, untick the write scope at OAuth consent when the task only reads. Treat note, transcript and file text as untrusted input" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.4 } ], "editorialScores": { "ergonomics": 66, "maintenance": 70, "payments": 10, "reliability": 64, "schema": 91, "security": 66, "transparency": 64 }, "provenanceScore": 75 }, "connect": { "install": "uvx affinity-mcp", "http": "curl https://api.affinity.co/v2/persons -H \"Authorization: Bearer \u003cYOUR_API_KEY\u003e\" -H \"X-Affinity-Api-Version: 2026-09-17\"", "claudeCode": "claude mcp add --transport http affinity-mcp https://mcp.affinity.co/mcp", "config": { "mcpServers": { "affinity-mcp": { "args": [ "affinity-mcp" ], "command": "uvx", "env": { "AFFINITY_API_KEY": "your_api_key_here" } } } } }, "letme": { "capability": "https://letme.dev/crm.records", "tool": "https://letme.dev/affinity" }, "area": "business", "unitPrices": [ { "item": "Scale", "unit": "seat-month", "usd": 191.67, "note": "$2,300 a user a year, billed yearly. Lowest plan with the API and MCP, 100,000 calls a month" }, { "item": "Advanced", "unit": "seat-month", "usd": 225, "note": "$2,700 a user a year, billed yearly. 100,000 calls a month" } ], "provenance": { "legalEntity": "Project Affinity, Inc.", "domain": "affinity.co", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://cdn.prod.website-files.com/6372644369a530caa8c39dfc/69aa97b4ff59044c68b6df92_Affinity%20MSA%20-%202025-10-30%2C%20v2025.2%20%5BNO%20SIG%5D.pdf?v=2", "privacy": "https://www.affinity.co/legal/privacy-policy", "statusPage": "https://status.affinity.co", "changelog": "https://developer.affinity.co/pages/changelog/previous-changes", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The master subscription agreement (v2025.2, listed as updated 30 October 2025) names Project Affinity, Inc., a Delaware corporation at 182 Howard Street, PMB #3, San Francisco, CA 94105. It is the customer contract, published as a PDF linked from https://www.affinity.co/legal.", "Outside developers building for shared customers are governed by the Affinity Developer Agreement (v2025.1, listed as updated 18 September 2025), also linked from the legal page. The page at /legal/terms-of-use is the website terms of 16 July 2018 and is not used here.", "The privacy policy is marked updated July 2026 and covers personal data gathered through the services. Customer data is handled under the DPA (March 2025 online terms).", "The API answers at api.affinity.co and the hosted MCP server at mcp.affinity.co, both on the vendor's domain.", "https://www.affinity.co/.well-known/security.txt and https://affinity.co/.well-known/security.txt both returned 404.", "Domain registration date not established. The three RDAP services we tried returned 404 or no answer for affinity.co." ], "score": 75 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/affinity.json", "live": { "slug": "affinity", "probe": { "target": "https://api.affinity.co/v2", "method": "get", "lastAt": "2026-10-09T01:12:38.795204619Z", "lastOk": true, "lastStatus": 401, "lastMs": 458, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 452, "p95ms24h": 483, "samples24h": 63, "samples30d": 63, "days": [ { "date": "2026-10-08", "probes": 50, "ok": 50 }, { "date": "2026-10-09", "probes": 13, "ok": 13 } ] }, "vendorStatus": { "page": "https://status.affinity.co", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-09T01:07:18.159934278Z" }, "updatedAt": "2026-10-09T01:12:38.795204619Z" } }, "answer": "Affinity scores 63.4 (B) on agent readiness against folk API + MCP's 60.8 (C), and leads in 3 of 7 scored categories. folk API + MCP leads on payments \u0026 pricing and transparency \u0026 trust.", "b": { "slug": "folk", "name": "folk API + MCP", "vendor": "folk", "vendorUrl": "https://www.folk.app", "kind": "http-api", "category": "crm", "summary": "REST API and hosted MCP server for folk, a relationship CRM for small teams.", "url": "https://www.anchorterminal.com/tools/folk", "markdownUrl": "https://www.anchorterminal.com/tools/folk.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/folk.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/folk.json", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.folk.app/v1", "packages": [], "auth": "mixed", "authNotes": "REST calls take a workspace API key as a Bearer token; keys have no scopes and share one rate limit per user. The hosted MCP server at https://mcp.folk.app/mcp uses OAuth and acts with the signed-in user's permissions.", "pricing": "paid", "pricingNotes": "No free plan, a 14-day trial with no card. Standard $24 a member a month billed yearly or $30 monthly (MCP, no REST API), Premium $48 yearly or $60 monthly (adds REST API, custom objects and deals), Enterprise from $80 yearly or $100 monthly (https://www.folk.app/pricing).", "priceSummary": "$24 / seat-mo", "where": "hosted", "x402": { "level": "no", "evidence": "No payments. Access follows the folk subscription.", "endpoints": [] }, "toolCount": 38, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://developer.folk.app", "llmsTxt": "https://developer.folk.app/llms.txt", "openapi": "https://developer.folk.app/schemas/2025-06-09.json", "capabilities": [ "crm.records", "crm.pipeline", "crm.activities", "crm.search", "crm.webhooks", "crm.email" ], "tags": [ "hosted", "mcp", "llms-txt", "openapi", "webhooks", "closed-source", "no-card" ], "lastRelease": "2026-09-15", "graded": true, "anchor": { "graded": true, "score": 60.8, "grade": "C", "agentReady": false, "rank": 384, "ranked": true, "rankOf": 722, "categoryRank": 8, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 70, "maintenance": 60, "payments": 30, "reliability": 55, "schema": 91, "security": 43, "transparency": 81 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Dated API versions, a year's support and 6 months' deprecation notice with `Deprecation` and `Sunset` headers. MCP server in open beta since 1 July 2026.", "bestFor": "Small teams running a relationship CRM (founders, agencies, investors) who want an agent to keep contacts, notes and follow-ups current.", "strengths": [ "Dated API versions, a year's support and 6 months' deprecation notice with `Deprecation` and `Sunset` headers", "`Idempotency-Key` on writes and a 429 body with `retryAfter`", "Errors carry `code`, `message`, `documentationUrl` and `requestId`", "MCP tools badged read-only, destructive or idempotent, and none delete records", "Privacy policy lists 24 processors, hosting in AWS Ireland and retention periods" ], "weaknesses": [ "MCP server in open beta since 1 July 2026", "REST API keys have no scopes and MCP gets the user's full access", "REST API only on Premium and Enterprise", "Status page history didn't load, so the incident record is unknown", "No SOC 2 or ISO 27001 found, and no security.txt" ], "agentNotes": [ "Send `X-API-Version: 2025-06-09` on every REST call", "Set an `Idempotency-Key` on creates, and treat a 409 `IDEMPOTENCY_REQUEST_IN_PROGRESS` as wait and retry", "On a 429, wait until `details.retryAfter`, and remember all your keys share one 600-a-minute budget", "Move off the reminder endpoints to tasks before their removal on 2027-02-13", "Expect some interaction content to be hidden by the workspace's privacy rules" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 60.8 } ], "editorialScores": { "ergonomics": 70, "maintenance": 60, "payments": 30, "reliability": 55, "schema": 91, "security": 43, "transparency": 80 }, "provenanceScore": 82 }, "connect": { "http": "curl https://api.folk.app/v1/users/me -H \"Authorization: Bearer $FOLK_API_KEY\" -H \"X-API-Version: 2025-06-09\"", "claudeCode": "claude mcp add --transport http folk https://mcp.folk.app/mcp", "config": { "mcpServers": { "folk": { "url": "https://mcp.folk.app/mcp" } } } }, "letme": { "capability": "https://letme.dev/crm.records", "tool": "https://letme.dev/folk" }, "area": "business", "unitPrices": [ { "item": "Standard", "unit": "seat-month", "usd": 24, "note": "billed yearly, $30 monthly; MCP but no REST API" }, { "item": "Premium (first plan with REST API)", "unit": "seat-month", "usd": 48, "note": "billed yearly, $60 monthly" }, { "item": "Enterprise", "unit": "seat-month", "usd": 80, "note": "from, billed yearly, $100 monthly" } ], "provenance": { "legalEntity": "Folk Inc.", "domain": "folk.app", "domainRegistered": "2018-05-08", "endpointOnVendorDomain": true, "terms": "https://www.folk.app/terms-of-use", "privacy": "https://www.folk.app/privacy-policy", "statusPage": "https://status.folk.app", "changelog": "https://developer.folk.app/changelog", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "The terms of use don't name the company; Folk Inc. (Delaware) is named as data controller in the privacy policy." ], "score": 82 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/folk.json", "live": { "slug": "folk", "probe": { "target": "https://api.folk.app/v1", "method": "get", "lastAt": "2026-10-09T01:12:46.530045506Z", "lastOk": true, "lastStatus": 401, "lastMs": 171, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 79, "p95ms24h": 146, "samples24h": 267, "samples30d": 2199, "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": 13, "ok": 13 } ] }, "vendorStatus": { "page": "https://status.folk.app", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:38:33.575335808Z" }, "securityTxt": { "url": "https://folk.app/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:52.123741305Z" }, "llmsTxt": { "url": "https://developer.folk.app/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:26.892316606Z" }, "domain": { "domain": "folk.app", "registered": "2018-05-08", "source": "https://pubapi.registry.google/rdap/domain/folk.app", "checkedAt": "2026-10-04T13:09:20.283969053Z" }, "pages": [ { "url": "https://developer.folk.app/changelog", "kind": "deprecations", "status": 200, "checkedAt": "2026-10-08T18:17:13.508654155Z", "changedAt": "2026-10-07T18:04:03.749282174Z", "fingerprint": "3d0da301f164" }, { "url": "https://www.folk.app/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:27:45.735590538Z", "changedAt": "2026-10-08T18:27:45.735590538Z", "fingerprint": "4fff55901e8c" }, { "url": "https://www.folk.app/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:27:47.838173614Z", "changedAt": "2026-10-08T18:27:47.838173614Z", "fingerprint": "513f91eaa860" }, { "url": "https://www.folk.app/terms-of-use", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:27:49.889512486Z", "changedAt": "2026-10-08T18:27:49.889512486Z", "fingerprint": "1c27989c5982" } ], "updatedAt": "2026-10-09T01:12:46.530045506Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Project Affinity, Inc.", "b": "folk", "name": "Vendor" }, { "a": "https://api.affinity.co/v2", "b": "https://api.folk.app/v1", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP, stdio", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Paid", "b": "Paid", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Affinity's master subscription agreement. The `affinity-mcp` package on PyPI is MIT", "b": "none", "name": "Licence" }, { "a": "75", "b": "38", "name": "Tools exposed" }, { "a": "yes", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-02", "b": "2026-09-15", "name": "Last release" }, { "a": "", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-07-01", "b": "no date given", "name": "Privacy policy last updated" }, { "a": "", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "268 PyPI/wk", "b": "none", "name": "Popularity" }, { "a": "none", "b": "3.5/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "Affinity scores 63.4 (B) on agent readiness against folk API + MCP's 60.8 (C), and leads in 3 of 7 scored categories. folk API + MCP leads on payments \u0026 pricing and transparency \u0026 trust.", "question": "Which is better for AI agents, Affinity or folk API + MCP?" }, { "answer": "Both take an API key or an OAuth sign-in.", "question": "Do Affinity and folk API + MCP need an API key?" }, { "answer": "Yes. Affinity has a hosted endpoint at https://api.affinity.co/v2 and folk API + MCP at https://api.folk.app/v1.", "question": "Can an agent call Affinity and folk API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 64 against 55", "Security \u0026 auth, 66 against 43", "Maintenance \u0026 community, 70 against 60" ], "also": [ "Runs on your own machine" ], "goodFor": "Venture capital, private equity and other private capital firms that already run Affinity and want an agent to read relationship strength, pipeline lists, notes and meetings, then update fields and log notes.", "slug": "affinity", "watchFor": "No self-serve access. Every plan button reads Contact sales, the Essential plan has no API, and trial accounts can't call the API" }, { "aheadOn": [ "Payments \u0026 pricing, 30 against 10", "Transparency \u0026 trust, 81 against 70" ], "also": [ "Free to start without a card" ], "goodFor": "Small teams running a relationship CRM (founders, agencies, investors) who want an agent to keep contacts, notes and follow-ups current.", "slug": "folk", "watchFor": "MCP server in open beta since 1 July 2026" } ], "job": { "capability": "crm.records", "name": "Crm records" }, "others": [ { "json": "https://www.anchorterminal.com/compare/affinity-vs-attio.json", "title": "Affinity vs Attio API + MCP", "url": "https://www.anchorterminal.com/compare/affinity-vs-attio" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-capsule-crm.json", "title": "Affinity vs Capsule CRM", "url": "https://www.anchorterminal.com/compare/affinity-vs-capsule-crm" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-close.json", "title": "Affinity vs Close API + MCP", "url": "https://www.anchorterminal.com/compare/affinity-vs-close" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-copper.json", "title": "Affinity vs Copper API", "url": "https://www.anchorterminal.com/compare/affinity-vs-copper" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-dynamics-365-sales.json", "title": "Affinity vs Microsoft Dynamics 365 Sales", "url": "https://www.anchorterminal.com/compare/affinity-vs-dynamics-365-sales" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-freshsales.json", "title": "Affinity vs Freshsales API", "url": "https://www.anchorterminal.com/compare/affinity-vs-freshsales" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-hubspot-mcp.json", "title": "Affinity vs HubSpot API + MCP", "url": "https://www.anchorterminal.com/compare/affinity-vs-hubspot-mcp" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-nutshell.json", "title": "Affinity vs Nutshell", "url": "https://www.anchorterminal.com/compare/affinity-vs-nutshell" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-pipedrive.json", "title": "Affinity vs Pipedrive API + MCP", "url": "https://www.anchorterminal.com/compare/affinity-vs-pipedrive" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-salesforce.json", "title": "Affinity vs Salesforce API + MCP", "url": "https://www.anchorterminal.com/compare/affinity-vs-salesforce" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-streak.json", "title": "Affinity vs Streak API + MCP", "url": "https://www.anchorterminal.com/compare/affinity-vs-streak" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-twenty.json", "title": "Affinity vs Twenty API + MCP", "url": "https://www.anchorterminal.com/compare/affinity-vs-twenty" }, { "json": "https://www.anchorterminal.com/compare/affinity-vs-zoho-crm.json", "title": "Affinity vs Zoho CRM", "url": "https://www.anchorterminal.com/compare/affinity-vs-zoho-crm" }, { "json": "https://www.anchorterminal.com/compare/attio-vs-folk.json", "title": "Attio API + MCP vs folk API + MCP", "url": "https://www.anchorterminal.com/compare/attio-vs-folk" }, { "json": "https://www.anchorterminal.com/compare/capsule-crm-vs-folk.json", "title": "Capsule CRM vs folk API + MCP", "url": "https://www.anchorterminal.com/compare/capsule-crm-vs-folk" }, { "json": "https://www.anchorterminal.com/compare/close-vs-folk.json", "title": "Close API + MCP vs folk API + MCP", "url": "https://www.anchorterminal.com/compare/close-vs-folk" }, { "json": "https://www.anchorterminal.com/compare/copper-vs-folk.json", "title": "Copper API vs folk API + MCP", "url": "https://www.anchorterminal.com/compare/copper-vs-folk" }, { "json": "https://www.anchorterminal.com/compare/dynamics-365-sales-vs-folk.json", "title": "Microsoft Dynamics 365 Sales vs folk API + MCP", "url": "https://www.anchorterminal.com/compare/dynamics-365-sales-vs-folk" }, { "json": "https://www.anchorterminal.com/compare/folk-vs-freshsales.json", "title": "folk API + MCP vs Freshsales API", "url": "https://www.anchorterminal.com/compare/folk-vs-freshsales" }, { "json": "https://www.anchorterminal.com/compare/folk-vs-hubspot-mcp.json", "title": "folk API + MCP vs HubSpot API + MCP", "url": "https://www.anchorterminal.com/compare/folk-vs-hubspot-mcp" }, { "json": "https://www.anchorterminal.com/compare/folk-vs-nutshell.json", "title": "folk API + MCP vs Nutshell", "url": "https://www.anchorterminal.com/compare/folk-vs-nutshell" }, { "json": "https://www.anchorterminal.com/compare/folk-vs-pipedrive.json", "title": "folk API + MCP vs Pipedrive API + MCP", "url": "https://www.anchorterminal.com/compare/folk-vs-pipedrive" }, { "json": "https://www.anchorterminal.com/compare/folk-vs-salesforce.json", "title": "folk API + MCP vs Salesforce API + MCP", "url": "https://www.anchorterminal.com/compare/folk-vs-salesforce" }, { "json": "https://www.anchorterminal.com/compare/folk-vs-streak.json", "title": "folk API + MCP vs Streak API + MCP", "url": "https://www.anchorterminal.com/compare/folk-vs-streak" }, { "json": "https://www.anchorterminal.com/compare/folk-vs-twenty.json", "title": "folk API + MCP vs Twenty API + MCP", "url": "https://www.anchorterminal.com/compare/folk-vs-twenty" }, { "json": "https://www.anchorterminal.com/compare/folk-vs-zoho-crm.json", "title": "folk API + MCP vs Zoho CRM", "url": "https://www.anchorterminal.com/compare/folk-vs-zoho-crm" } ], "scores": [ { "affinity": 64, "by": 9, "edge": "affinity", "folk": 55, "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "affinity": 91, "by": 0, "edge": "", "folk": 91, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "affinity": 66, "by": 4, "edge": "folk", "folk": 70, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "affinity": 66, "by": 23, "edge": "affinity", "folk": 43, "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "affinity": 10, "by": 20, "edge": "folk", "folk": 30, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "affinity": 70, "by": 10, "edge": "affinity", "folk": 60, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "affinity": 70, "by": 11, "edge": "folk", "folk": 81, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Affinity scores 63.4 (B) on agent readiness against folk API + MCP's 60.8 (C), and leads in 3 of 7 scored categories. folk API + MCP leads on payments \u0026 pricing and transparency \u0026 trust. Both do crm records.", "verdicts": { "affinity": "A public OpenAPI 3.1 file, dated API versions with migration notes and a hosted MCP server with a read-only OAuth scope give an agent a well-documented way in. Access needs a Scale plan at $2,300 a user a year, sold through sales, with no trial that includes the API, and 36 of the 112 v2 operations are marked beta.", "folk": "Dated API versions, a year's support and 6 months' deprecation notice with `Deprecation` and `Sunset` headers. MCP server in open beta since 1 July 2026." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/affinity-vs-folk", "json": "https://www.anchorterminal.com/compare/affinity-vs-folk.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/affinity-vs-folk.md", "slim": "https://www.anchorterminal.com/compare/affinity-vs-folk.min.md" }, "markdown": "Affinity scores 63.4 (B) on agent readiness against folk API + MCP's 60.8 (C), and leads in 3 of 7 scored categories. folk API + MCP leads on payments \u0026 pricing and transparency \u0026 trust. Both do crm records.\n\n- Affinity: grade B, 63.4/100, rank #311 of 722. Markdown https://www.anchorterminal.com/tools/affinity.md · JSON https://www.anchorterminal.com/api/v1/tools/affinity.json\n- folk API + MCP: grade C, 60.8/100, rank #384 of 722. Markdown https://www.anchorterminal.com/tools/folk.md · JSON https://www.anchorterminal.com/api/v1/tools/folk.json\n\n## Which one, for what\n\n### Affinity (B)\n\nGood for: Venture capital, private equity and other private capital firms that already run Affinity and want an agent to read relationship strength, pipeline lists, notes and meetings, then update fields and log notes.\n\nAhead on:\n- Reliability, 64 against 55\n- Security \u0026 auth, 66 against 43\n- Maintenance \u0026 community, 70 against 60\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: No self-serve access. Every plan button reads Contact sales, the Essential plan has no API, and trial accounts can't call the API\n\n### folk API + MCP (C)\n\nGood for: Small teams running a relationship CRM (founders, agencies, investors) who want an agent to keep contacts, notes and follow-ups current.\n\nAhead on:\n- Payments \u0026 pricing, 30 against 10\n- Transparency \u0026 trust, 81 against 70\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: MCP server in open beta since 1 July 2026\n\n\n## Score by category\n\n| Category | Weight | Affinity | folk API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 64 | 55 | Affinity +9 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 91 | 91 | even |\n| Agent ergonomics | 13% (16.2 this run) | 66 | 70 | folk API + MCP +4 |\n| Security \u0026 auth | 14% (17.5 this run) | 66 | 43 | Affinity +23 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 10 | 30 | folk API + MCP +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 70 | 60 | Affinity +10 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 81 | folk API + MCP +11 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **63.4 · B** | **60.8 · C** | |\n\n## Facts side by side\n\n| Fact | Affinity | folk API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Project Affinity, Inc. | folk |\n| Hosted endpoint | `https://api.affinity.co/v2` | `https://api.folk.app/v1` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Paid | Paid |\n| x402 | no | no |\n| Licence | Proprietary service under Affinity's master subscription agreement. The `affinity-mcp` package on PyPI is MIT | none |\n| Tools exposed | 75 | 38 |\n| Read-only variant documented | yes | yes |\n| llms.txt | yes | yes |\n| Last release | 2026-10-02 | 2026-09-15 |\n| Terms last updated | | no date given |\n| Privacy policy last updated | 2026-07-01 | no date given |\n| Customer content may train models | | not found in the text |\n| Terms restrict automated access | | not found in the text |\n| Terms restrict benchmarking | | not found in the text |\n| Terms or service can change without notice | | not found in the text |\n| Arbitration or class-action waiver | | not found in the text |\n| Popularity | 268 PyPI/wk | none |\n| Agent reviews | none | 3.5/5 (2) |\n\n## Verdicts\n\n**Affinity.** A public OpenAPI 3.1 file, dated API versions with migration notes and a hosted MCP server with a read-only OAuth scope give an agent a well-documented way in. Access needs a Scale plan at $2,300 a user a year, sold through sales, with no trial that includes the API, and 36 of the 112 v2 operations are marked beta.\n\n**folk API + MCP.** Dated API versions, a year's support and 6 months' deprecation notice with `Deprecation` and `Sunset` headers. MCP server in open beta since 1 July 2026.\n\n## Before you call either\n\n### Affinity\n\n1. Send `X-Affinity-Api-Version: 2026-09-17` on every request, or the key's default version applies. Unauthenticated calls answered as 2024-01-01 when we checked\n2. Read `x-ratelimit-limit-user-remaining` and `x-ratelimit-limit-org-remaining` on each response. The limits are 900 calls a minute per user and, below Enterprise, 100,000 a month per account, shared by v1, v2 and MCP\n3. Follow `pagination.nextUrl` for the next page, and pass `fieldIds` or `fieldTypes` so list calls return only the fields needed\n4. Check for duplicates before a create. There are no idempotency keys, so a retried POST can make a second record\n5. For MCP, untick the write scope at OAuth consent when the task only reads. Treat note, transcript and file text as untrusted input\n\n### folk API + MCP\n\n1. Send `X-API-Version: 2025-06-09` on every REST call\n2. Set an `Idempotency-Key` on creates, and treat a 409 `IDEMPOTENCY_REQUEST_IN_PROGRESS` as wait and retry\n3. On a 429, wait until `details.retryAfter`, and remember all your keys share one 600-a-minute budget\n4. Move off the reminder endpoints to tasks before their removal on 2027-02-13\n5. Expect some interaction content to be hidden by the workspace's privacy rules\n\n## Questions\n\n### Which is better for AI agents, Affinity or folk API + MCP?\n\nAffinity scores 63.4 (B) on agent readiness against folk API + MCP's 60.8 (C), and leads in 3 of 7 scored categories. folk API + MCP leads on payments \u0026 pricing and transparency \u0026 trust.\n\n### Do Affinity and folk API + MCP need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call Affinity and folk API + MCP without installing anything?\n\nYes. Affinity has a hosted endpoint at https://api.affinity.co/v2 and folk API + MCP at https://api.folk.app/v1.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/affinity-vs-folk.json, and with the fewest tokens: https://www.anchorterminal.com/compare/affinity-vs-folk.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"affinity\", \"b\": \"folk\"}`. From a terminal: `anchor compare affinity folk`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/affinity.json and https://www.anchorterminal.com/api/v1/tools/folk.json\n\n## Other comparisons with Affinity or folk API + MCP\n\n- [Affinity vs Attio API + MCP](https://www.anchorterminal.com/compare/affinity-vs-attio.md)\n- [Affinity vs Capsule CRM](https://www.anchorterminal.com/compare/affinity-vs-capsule-crm.md)\n- [Affinity vs Close API + MCP](https://www.anchorterminal.com/compare/affinity-vs-close.md)\n- [Affinity vs Copper API](https://www.anchorterminal.com/compare/affinity-vs-copper.md)\n- [Affinity vs Microsoft Dynamics 365 Sales](https://www.anchorterminal.com/compare/affinity-vs-dynamics-365-sales.md)\n- [Affinity vs Freshsales API](https://www.anchorterminal.com/compare/affinity-vs-freshsales.md)\n- [Affinity vs HubSpot API + MCP](https://www.anchorterminal.com/compare/affinity-vs-hubspot-mcp.md)\n- [Affinity vs Nutshell](https://www.anchorterminal.com/compare/affinity-vs-nutshell.md)\n- [Affinity vs Pipedrive API + MCP](https://www.anchorterminal.com/compare/affinity-vs-pipedrive.md)\n- [Affinity vs Salesforce API + MCP](https://www.anchorterminal.com/compare/affinity-vs-salesforce.md)\n- [Affinity vs Streak API + MCP](https://www.anchorterminal.com/compare/affinity-vs-streak.md)\n- [Affinity vs Twenty API + MCP](https://www.anchorterminal.com/compare/affinity-vs-twenty.md)\n- [Affinity vs Zoho CRM](https://www.anchorterminal.com/compare/affinity-vs-zoho-crm.md)\n- [Attio API + MCP vs folk API + MCP](https://www.anchorterminal.com/compare/attio-vs-folk.md)\n- [Capsule CRM vs folk API + MCP](https://www.anchorterminal.com/compare/capsule-crm-vs-folk.md)\n- [Close API + MCP vs folk API + MCP](https://www.anchorterminal.com/compare/close-vs-folk.md)\n- [Copper API vs folk API + MCP](https://www.anchorterminal.com/compare/copper-vs-folk.md)\n- [Microsoft Dynamics 365 Sales vs folk API + MCP](https://www.anchorterminal.com/compare/dynamics-365-sales-vs-folk.md)\n- [folk API + MCP vs Freshsales API](https://www.anchorterminal.com/compare/folk-vs-freshsales.md)\n- [folk API + MCP vs HubSpot API + MCP](https://www.anchorterminal.com/compare/folk-vs-hubspot-mcp.md)\n- [folk API + MCP vs Nutshell](https://www.anchorterminal.com/compare/folk-vs-nutshell.md)\n- [folk API + MCP vs Pipedrive API + MCP](https://www.anchorterminal.com/compare/folk-vs-pipedrive.md)\n- [folk API + MCP vs Salesforce API + MCP](https://www.anchorterminal.com/compare/folk-vs-salesforce.md)\n- [folk API + MCP vs Streak API + MCP](https://www.anchorterminal.com/compare/folk-vs-streak.md)\n- [folk API + MCP vs Twenty API + MCP](https://www.anchorterminal.com/compare/folk-vs-twenty.md)\n- [folk API + MCP vs Zoho CRM](https://www.anchorterminal.com/compare/folk-vs-zoho-crm.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": "Affinity vs folk API + MCP", "url": "" } ], "description": "Affinity scores 63.4 (B) on agent readiness against folk API + MCP's 60.8 (C), and leads in 3 of 7 scored categories. folk API + MCP leads on payments \u0026 pricing and transparency \u0026 trust. Both do crm records. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Affinity B 63.4", "folk API + MCP C 60.8", "scores" ], "h1": "Affinity vs folk API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-affinity-vs-folk.png", "path": "/compare/affinity-vs-folk", "published": "2026-10-01", "section": "tools", "title": "Affinity vs folk API + MCP for AI agents, B 63.4 vs C 60.8", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/affinity-vs-folk" }, "tokens": { "markdown": 2400, "slim": 730 }, "version": 1 }