{ "data": { "a": { "slug": "close", "name": "Close API + MCP", "vendor": "Close", "vendorUrl": "https://www.close.com", "kind": "http-api", "category": "crm", "summary": "REST API and hosted MCP server for Close, a sales CRM built around calling, email and SMS.", "url": "https://www.anchorterminal.com/tools/close", "markdownUrl": "https://www.anchorterminal.com/tools/close.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/close.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/close.json", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.close.com/api/v1", "packages": [ { "registry": "pypi", "name": "closeio" } ], "auth": "mixed", "authNotes": "API keys over HTTP Basic (key as username, empty password), scoped to one user and organisation; OAuth 2.0 for apps. The hosted MCP server at https://mcp.close.com/mcp takes OAuth with dynamic client registration, or the headers Close-API-Key plus Close-Scope set to mcp.read, mcp.write_safe or mcp.write_destructive.", "pricing": "paid", "pricingNotes": "No free plan, a 14-day trial with no card. Solo $9 a seat a month billed yearly or $19 monthly, Essentials $35 or $49, Growth $99 or $109, Scale $139 or $149. API access is on every plan. Calls around $0.02 a minute and SMS at cost on top (https://www.close.com/pricing).", "priceSummary": "$9 / seat-mo", "where": "hosted", "x402": { "level": "no", "evidence": "No payments. Access follows the Close subscription.", "endpoints": [] }, "toolCount": 121, "popularity": { "githubStars": 70, "npmWeekly": null, "pypiWeekly": 13891, "asOf": "2026-09-30" }, "docsUrl": "https://developer.close.com", "llmsTxt": "https://developer.close.com/llms.txt", "openapi": "https://api.close.com/api/openapi.json", "registryName": "com.close/close-mcp", "capabilities": [ "crm.records", "crm.pipeline", "crm.activities", "crm.search", "crm.webhooks", "crm.email" ], "tags": [ "hosted", "mcp", "llms-txt", "openapi", "webhooks", "closed-source", "no-card", "python", "read-only-mode" ], "lastRelease": "2026-09-10", "graded": true, "anchor": { "graded": true, "score": 66.7, "grade": "B", "agentReady": false, "rank": 229, "ranked": true, "rankOf": 722, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 56, "maintenance": 79, "payments": 30, "reliability": 81, "schema": 82, "security": 66, "transparency": 67 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Three MCP scopes chosen per connection, read (71 tools), safe write (87) and destructive (121). 121 MCP tools, and even the read scope loads 71.", "bestFor": "Inside-sales teams that call, email and text from the CRM and want an agent to log, triage and draft without being able to send or delete by default.", "strengths": [ "Three MCP scopes chosen per connection, read (71 tools), safe write (87) and destructive (121)", "Email tools create drafts only, never send", "No status incidents logged between 3 July and 1 October 2026", "`RateLimit` header on every response and `retry-after` on every 429", "Event log API on every plan, and SOC 2 Type 2" ], "weaknesses": [ "121 MCP tools, and even the read scope loads 71", "OAuth for REST apps has a single full-access scope", "No public subprocessor list, no security.txt and no bug bounty found", "OpenAPI spec is marked experimental and incomplete", "No free plan, 14-day trial only" ], "agentNotes": [ "Connect with `Close-Scope: mcp.read` unless the job needs writes, and `mcp.write_safe` if it only creates", "Sleep for the `reset` value in the `RateLimit` header after a 429, which the docs say beats `retry-after`", "Use cursors through advanced filtering or the event log for large pulls, since `_skip` has a per-resource ceiling", "Search the lead before `create_lead`, because there's no idempotency key and a retry makes a duplicate", "Expect `create_draft_email` to leave a draft, and tell the user to send it from Close" ], "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": 66.7 } ], "editorialScores": { "ergonomics": 56, "maintenance": 79, "payments": 30, "reliability": 81, "schema": 82, "security": 66, "transparency": 47 }, "provenanceScore": 87 }, "connect": { "http": "curl https://api.close.com/api/v1/me/ -u \"$CLOSE_API_KEY:\"", "claudeCode": "claude mcp add --transport http close https://mcp.close.com/mcp --header \"Close-API-Key: $CLOSE_API_KEY\" --header \"Close-Scope: mcp.read\"", "config": { "mcpServers": { "close": { "url": "https://mcp.close.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/crm.records", "tool": "https://letme.dev/close" }, "area": "business", "unitPrices": [ { "item": "Solo", "unit": "seat-month", "usd": 9, "note": "billed yearly, $19 monthly; API on every plan" }, { "item": "Essentials", "unit": "seat-month", "usd": 35, "note": "billed yearly, $49 monthly" }, { "item": "Growth", "unit": "seat-month", "usd": 99, "note": "billed yearly, $109 monthly" }, { "item": "Scale", "unit": "seat-month", "usd": 139, "note": "billed yearly, $149 monthly" }, { "item": "Outbound calls", "unit": "call-minute", "usd": 0.02, "note": "approximate, most destinations" } ], "provenance": { "legalEntity": "Elastic Inc", "domain": "close.com", "domainRegistered": "1996-02-20", "domainNote": "close.com was registered in 1996, long before the Close product took the name.", "endpointOnVendorDomain": true, "terms": "https://close.com/tos", "privacy": "https://close.com/privacy", "statusPage": "https://status.close.com", "changelog": "https://developer.close.com/api/overview/changelog", "securityTxt": "none", "checked": "2026-09-30", "score": 87 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/close.json", "live": { "slug": "close", "probe": { "target": "https://api.close.com/api/v1", "method": "get", "lastAt": "2026-10-08T21:12:07.508355399Z", "lastOk": true, "lastStatus": 404, "lastMs": 456, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 454, "p95ms24h": 515, "samples24h": 271, "samples30d": 2157, "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": 239, "ok": 239 } ] }, "vendorStatus": { "page": "https://status.close.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T21:05:54.226515519Z" }, "versions": [ { "registry": "mcp-registry", "name": "com.close/close-mcp", "version": "1.0.1", "seenAt": "2026-10-08T02:42:52.272076636Z" }, { "registry": "pypi", "name": "closeio", "version": "2.1", "released": "2023-07-25", "seenAt": "2026-10-08T16:05:45.526506585Z" } ], "pypiWeekly": 15285, "securityTxt": { "url": "https://close.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:42.46814298Z" }, "llmsTxt": { "url": "https://developer.close.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:12.309613968Z" }, "domain": { "domain": "close.com", "registered": "1996-02-20", "source": "https://rdap.verisign.com/com/v1/domain/close.com", "checkedAt": "2026-10-04T13:09:57.923663308Z" }, "pages": [ { "url": "https://developer.close.com/api/overview/changelog", "kind": "changelog", "status": 304, "checkedAt": "2026-10-08T18:17:09.436223535Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "01d1d3db4bfc" }, { "url": "https://www.close.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:27:04.812277451Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "66f3d7175437" }, { "url": "https://close.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-08T18:16:14.400477874Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "af850e65f4fd" }, { "url": "https://close.com/tos", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:16:16.650448918Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "8f7850d129a1" } ], "updatedAt": "2026-10-08T21:12:07.508355399Z" } }, "answer": "Close API + MCP scores 66.7 (B) on agent readiness against Nutshell's 49.6 (D), and leads in 5 of 7 scored categories. Nutshell leads on payments \u0026 pricing.", "b": { "slug": "nutshell", "name": "Nutshell", "vendor": "Nutshell, Inc.", "vendorUrl": "https://www.nutshell.com", "kind": "http-api", "category": "crm", "summary": "Nutshell is a sales CRM for small teams, with email marketing and quoting built in. Agents reach it through a REST API at `app.nutshell.com/rest`, a legacy JSON-RPC API, webhooks and a hosted read-only MCP server.", "url": "https://www.anchorterminal.com/tools/nutshell", "markdownUrl": "https://www.anchorterminal.com/tools/nutshell.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/nutshell.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/nutshell.json", "license": "Proprietary service under Nutshell's Terms of Service", "transports": [ "http" ], "remoteUrl": "https://app.nutshell.com/rest", "packages": [], "auth": "mixed", "authNotes": "REST and JSON-RPC use HTTP Basic over HTTPS, with a Nutshell user's email as the username and an API key as the password. An admin creates keys under Setup, API keys, and chooses a permission type, one of which allows impersonating any user. Keys have no scopes. The MCP server at `https://app.nutshell.com/mcp` uses OAuth authorisation code with PKCE (S256), dynamic client registration at `/oauth/register`, a revocation endpoint and two scopes, `read` and `write`. Access is self-serve on every plan and the trial.", "pricing": "paid", "pricingNotes": "No free plan. A 14-day trial needs no card, and the API and MCP server are included on every plan. Five plans a seat a month billed yearly, Foundation $13, Growth $25, Pro $42, Business $59 and Enterprise $79, or $19, $32, $49, $67 and $89 billed monthly. API calls are not billed separately. The docs publish sandbox credentials for a demo account (https://www.nutshell.com/pricing, checked 2026-10-08).", "priceSummary": "$13 / seat-mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs, the OAuth metadata or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://developers.nutshell.com/", "llmsTxt": "https://developers.nutshell.com/llms.txt", "capabilities": [ "crm.records", "crm.pipeline", "crm.activities", "crm.search", "crm.webhooks" ], "tags": [ "hosted", "closed-source", "mcp", "oauth", "llms-txt", "webhooks", "no-card", "status-page", "soc2" ], "lastRelease": "2026-08-21", "graded": true, "anchor": { "graded": true, "score": 49.6, "grade": "D", "agentReady": false, "rank": 607, "ranked": true, "rankOf": 722, "categoryRank": 12, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 44, "maintenance": 46, "payments": 35, "reliability": 42, "schema": 57, "security": 58, "transparency": 71 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "The REST reference is served as Markdown with an OpenAPI fragment per operation, and the hosted MCP server uses OAuth with PKCE and can only read. No rate limit numbers, error format or API changelog were found in the reviewed documentation, and API keys carry no scopes.", "bestFor": "Small sales teams already on Nutshell who want an agent to read pipeline data over MCP or write records over REST at a low seat price.", "strengths": [ "API access and the MCP server are included on every plan, from Foundation at $13 a seat a month billed yearly", "`developers.nutshell.com/llms.txt` indexes 114 REST operations, each served as Markdown with its OpenAPI 3.0 definition", "Hosted MCP server at `https://app.nutshell.com/mcp` with OAuth, PKCE, dynamic client registration, a revocation endpoint and read-only tools", "Terms and privacy policy of 2 June 2026 both state that customer data is not used to train generalised AI models", "14-day trial with no card, and the docs publish sandbox credentials for a demo account" ], "weaknesses": [ "No rate limit numbers, 429 handling or Retry-After found for the REST API", "Error responses are documented on 9 of 114 operations, with no error body schema, and an unauthenticated REST call returns an HTML page", "API keys have no scopes or read-only type, and the key travels as an HTTP Basic password with a user's email", "No dated API changelog, no official SDK for REST and whole-spec OpenAPI download is disabled", "A database fault on 28 September 2026 left the application unavailable for some customers, marked major on the status page" ], "agentNotes": [ "Authenticate REST calls with HTTP Basic, a Nutshell user's email as username and the API key as password, against `https://app.nutshell.com/rest`", "Use IDs in the `\u003cnumber\u003e-\u003ctype\u003e` form, such as `3-accounts`, and send updates as JSON Patch with `content-type: application/json-patch+json`", "Page lists with `page[limit]` and `page[page]`, which is 0-based, and call `/accounts/list/fields` or the lead and contact equivalents for valid filter keys", "Use the REST API for writes. The MCP server only reads, and OAuth tokens need the `read` scope", "Filter webhook events yourself, because every webhook receives all events and subscriptions are created in Setup, not through the API" ], "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": 49.6 } ], "editorialScores": { "ergonomics": 44, "maintenance": 46, "payments": 35, "reliability": 42, "schema": 57, "security": 58, "transparency": 56 }, "provenanceScore": 86 }, "connect": { "http": "curl -u \"$NUTSHELL_USER_EMAIL:$NUTSHELL_API_KEY\" \\\n --url https://app.nutshell.com/rest/accounts \\\n --header 'accept: */*'" }, "letme": { "capability": "https://letme.dev/crm.records", "tool": "https://letme.dev/nutshell" }, "area": "business", "unitPrices": [ { "item": "Foundation (API and MCP included, 100 open leads)", "unit": "seat-month", "usd": 13, "note": "billed yearly; $19 billed monthly" }, { "item": "Growth", "unit": "seat-month", "usd": 25, "note": "billed yearly; $32 billed monthly" }, { "item": "Pro", "unit": "seat-month", "usd": 42, "note": "billed yearly; $49 billed monthly" }, { "item": "Business (first plan with the audit log)", "unit": "seat-month", "usd": 59, "note": "billed yearly; $67 billed monthly" }, { "item": "Enterprise (SSO and SQL access)", "unit": "seat-month", "usd": 79, "note": "billed yearly; $89 billed monthly" } ], "provenance": { "legalEntity": "Nutshell, Inc.", "domain": "nutshell.com", "domainRegistered": "1995-05-02", "endpointOnVendorDomain": true, "terms": "https://www.nutshell.com/legal/terms", "privacy": "https://www.nutshell.com/legal/privacy", "statusPage": "https://status.nutshell.com", "changelog": "https://www.nutshell.com/product-updates", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The Terms of Service (last updated 2 June 2026) name Nutshell, Inc., 1705 North Front Street, Harrisburg, PA 17102, cover the applications and APIs, and are governed by Pennsylvania law. The site footer says Nutshell is brought to you by WebFX.", "The REST API, the JSON-RPC API and the MCP server all answer at app.nutshell.com.", "www.nutshell.com/.well-known/security.txt returns 404. The security page asks for reports at security@nutshell.com and says there is no bug bounty.", "The product updates page lists launches without dates and is not an API changelog. No dated API changelog was found.", "The subprocessor list is at trust.nutshell.com/subprocessors, a page drawn by script that we could not read.", "RDAP for nutshell.com gives a registration date of 1995-05-02." ], "score": 86 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/nutshell.json", "live": { "slug": "nutshell", "probe": { "target": "https://app.nutshell.com/rest", "method": "get", "lastAt": "2026-10-08T21:12:17.00492712Z", "lastOk": true, "lastStatus": 404, "lastMs": 254, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 270, "p95ms24h": 310, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-08", "probes": 21, "ok": 21 } ] }, "vendorStatus": { "page": "https://status.nutshell.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T21:06:13.221021272Z" }, "updatedAt": "2026-10-08T21:12:17.00492712Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Close", "b": "Nutshell, Inc.", "name": "Vendor" }, { "a": "https://api.close.com/api/v1", "b": "https://app.nutshell.com/rest", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "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": "none", "b": "Proprietary service under Nutshell's Terms of Service", "name": "Licence" }, { "a": "121", "b": "none", "name": "Tools exposed" }, { "a": "yes", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "com.close/close-mcp", "b": "not listed", "name": "MCP registry" }, { "a": "2026-09-10", "b": "2026-08-21", "name": "Last release" }, { "a": "2025-10-31", "b": "2026-06-02", "name": "Terms last updated" }, { "a": "2026-05-30", "b": "2026-06-02", "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": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "70 stars, 14k PyPI/wk", "b": "none", "name": "Popularity" }, { "a": "3.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Close API + MCP scores 66.7 (B) on agent readiness against Nutshell's 49.6 (D), and leads in 5 of 7 scored categories. Nutshell leads on payments \u0026 pricing.", "question": "Which is better for AI agents, Close API + MCP or Nutshell?" }, { "answer": "Both take an API key or an OAuth sign-in.", "question": "Do Close API + MCP and Nutshell need an API key?" }, { "answer": "Yes. Close API + MCP has a hosted endpoint at https://api.close.com/api/v1 and Nutshell at https://app.nutshell.com/rest.", "question": "Can an agent call Close API + MCP and Nutshell without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 81 against 42", "Schema \u0026 documentation, 82 against 57", "Agent ergonomics, 56 against 44", "Security \u0026 auth, 66 against 58", "Maintenance \u0026 community, 79 against 46" ], "also": null, "goodFor": "Inside-sales teams that call, email and text from the CRM and want an agent to log, triage and draft without being able to send or delete by default.", "slug": "close", "watchFor": "121 MCP tools, and even the read scope loads 71" }, { "aheadOn": [ "Payments \u0026 pricing, 35 against 30" ], "also": null, "goodFor": "Small sales teams already on Nutshell who want an agent to read pipeline data over MCP or write records over REST at a low seat price.", "slug": "nutshell", "watchFor": "No rate limit numbers, 429 handling or Retry-After found for the REST API" } ], "job": { "capability": "crm.records", "name": "Crm records" }, "others": [ { "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-nutshell.json", "title": "Affinity vs Nutshell", "url": "https://www.anchorterminal.com/compare/affinity-vs-nutshell" }, { "json": "https://www.anchorterminal.com/compare/attio-vs-close.json", "title": "Attio API + MCP vs Close API + MCP", "url": "https://www.anchorterminal.com/compare/attio-vs-close" }, { "json": "https://www.anchorterminal.com/compare/attio-vs-nutshell.json", "title": "Attio API + MCP vs Nutshell", "url": "https://www.anchorterminal.com/compare/attio-vs-nutshell" }, { "json": "https://www.anchorterminal.com/compare/capsule-crm-vs-close.json", "title": "Capsule CRM vs Close API + MCP", "url": "https://www.anchorterminal.com/compare/capsule-crm-vs-close" }, { "json": "https://www.anchorterminal.com/compare/capsule-crm-vs-nutshell.json", "title": "Capsule CRM vs Nutshell", "url": "https://www.anchorterminal.com/compare/capsule-crm-vs-nutshell" }, { "json": "https://www.anchorterminal.com/compare/close-vs-copper.json", "title": "Close API + MCP vs Copper API", "url": "https://www.anchorterminal.com/compare/close-vs-copper" }, { "json": "https://www.anchorterminal.com/compare/close-vs-dynamics-365-sales.json", "title": "Close API + MCP vs Microsoft Dynamics 365 Sales", "url": "https://www.anchorterminal.com/compare/close-vs-dynamics-365-sales" }, { "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/close-vs-freshsales.json", "title": "Close API + MCP vs Freshsales API", "url": "https://www.anchorterminal.com/compare/close-vs-freshsales" }, { "json": "https://www.anchorterminal.com/compare/close-vs-hubspot-mcp.json", "title": "Close API + MCP vs HubSpot API + MCP", "url": "https://www.anchorterminal.com/compare/close-vs-hubspot-mcp" }, { "json": "https://www.anchorterminal.com/compare/close-vs-pipedrive.json", "title": "Close API + MCP vs Pipedrive API + MCP", "url": "https://www.anchorterminal.com/compare/close-vs-pipedrive" }, { "json": "https://www.anchorterminal.com/compare/close-vs-salesforce.json", "title": "Close API + MCP vs Salesforce API + MCP", "url": "https://www.anchorterminal.com/compare/close-vs-salesforce" }, { "json": "https://www.anchorterminal.com/compare/close-vs-streak.json", "title": "Close API + MCP vs Streak API + MCP", "url": "https://www.anchorterminal.com/compare/close-vs-streak" }, { "json": "https://www.anchorterminal.com/compare/close-vs-twenty.json", "title": "Close API + MCP vs Twenty API + MCP", "url": "https://www.anchorterminal.com/compare/close-vs-twenty" }, { "json": "https://www.anchorterminal.com/compare/close-vs-zoho-crm.json", "title": "Close API + MCP vs Zoho CRM", "url": "https://www.anchorterminal.com/compare/close-vs-zoho-crm" }, { "json": "https://www.anchorterminal.com/compare/copper-vs-nutshell.json", "title": "Copper API vs Nutshell", "url": "https://www.anchorterminal.com/compare/copper-vs-nutshell" }, { "json": "https://www.anchorterminal.com/compare/dynamics-365-sales-vs-nutshell.json", "title": "Microsoft Dynamics 365 Sales vs Nutshell", "url": "https://www.anchorterminal.com/compare/dynamics-365-sales-vs-nutshell" }, { "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/freshsales-vs-nutshell.json", "title": "Freshsales API vs Nutshell", "url": "https://www.anchorterminal.com/compare/freshsales-vs-nutshell" }, { "json": "https://www.anchorterminal.com/compare/hubspot-mcp-vs-nutshell.json", "title": "HubSpot API + MCP vs Nutshell", "url": "https://www.anchorterminal.com/compare/hubspot-mcp-vs-nutshell" }, { "json": "https://www.anchorterminal.com/compare/nutshell-vs-pipedrive.json", "title": "Nutshell vs Pipedrive API + MCP", "url": "https://www.anchorterminal.com/compare/nutshell-vs-pipedrive" }, { "json": "https://www.anchorterminal.com/compare/nutshell-vs-salesforce.json", "title": "Nutshell vs Salesforce API + MCP", "url": "https://www.anchorterminal.com/compare/nutshell-vs-salesforce" }, { "json": "https://www.anchorterminal.com/compare/nutshell-vs-streak.json", "title": "Nutshell vs Streak API + MCP", "url": "https://www.anchorterminal.com/compare/nutshell-vs-streak" }, { "json": "https://www.anchorterminal.com/compare/nutshell-vs-twenty.json", "title": "Nutshell vs Twenty API + MCP", "url": "https://www.anchorterminal.com/compare/nutshell-vs-twenty" }, { "json": "https://www.anchorterminal.com/compare/nutshell-vs-zoho-crm.json", "title": "Nutshell vs Zoho CRM", "url": "https://www.anchorterminal.com/compare/nutshell-vs-zoho-crm" } ], "scores": [ { "by": 39, "close": 81, "edge": "close", "key": "reliability", "name": "Reliability", "nutshell": 42, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 25, "close": 82, "edge": "close", "key": "schema", "name": "Schema \u0026 documentation", "nutshell": 57, "weight": 13 }, { "by": 12, "close": 56, "edge": "close", "key": "ergonomics", "name": "Agent ergonomics", "nutshell": 44, "weight": 13 }, { "by": 8, "close": 66, "edge": "close", "key": "security", "name": "Security \u0026 auth", "nutshell": 58, "weight": 14 }, { "by": 5, "close": 30, "edge": "nutshell", "key": "payments", "name": "Payments \u0026 pricing", "nutshell": 35, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 33, "close": 79, "edge": "close", "key": "maintenance", "name": "Maintenance \u0026 community", "nutshell": 46, "weight": 7 }, { "by": 4, "close": 67, "edge": "nutshell", "key": "transparency", "name": "Transparency \u0026 trust", "nutshell": 71, "weight": 7 } ], "summary": "Close API + MCP scores 66.7 (B) on agent readiness against Nutshell's 49.6 (D), and leads in 5 of 7 scored categories. Nutshell leads on payments \u0026 pricing. Both do crm records.", "verdicts": { "close": "Three MCP scopes chosen per connection, read (71 tools), safe write (87) and destructive (121). 121 MCP tools, and even the read scope loads 71.", "nutshell": "The REST reference is served as Markdown with an OpenAPI fragment per operation, and the hosted MCP server uses OAuth with PKCE and can only read. No rate limit numbers, error format or API changelog were found in the reviewed documentation, and API keys carry no scopes." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/close-vs-nutshell", "json": "https://www.anchorterminal.com/compare/close-vs-nutshell.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/close-vs-nutshell.md", "slim": "https://www.anchorterminal.com/compare/close-vs-nutshell.min.md" }, "markdown": "Close API + MCP scores 66.7 (B) on agent readiness against Nutshell's 49.6 (D), and leads in 5 of 7 scored categories. Nutshell leads on payments \u0026 pricing. Both do crm records.\n\n- Close API + MCP: grade B, 66.7/100, rank #229 of 722. Markdown https://www.anchorterminal.com/tools/close.md · JSON https://www.anchorterminal.com/api/v1/tools/close.json\n- Nutshell: grade D, 49.6/100, rank #607 of 722. Markdown https://www.anchorterminal.com/tools/nutshell.md · JSON https://www.anchorterminal.com/api/v1/tools/nutshell.json\n\n## Which one, for what\n\n### Close API + MCP (B)\n\nGood for: Inside-sales teams that call, email and text from the CRM and want an agent to log, triage and draft without being able to send or delete by default.\n\nAhead on:\n- Reliability, 81 against 42\n- Schema \u0026 documentation, 82 against 57\n- Agent ergonomics, 56 against 44\n- Security \u0026 auth, 66 against 58\n- Maintenance \u0026 community, 79 against 46\n\nWatch for: 121 MCP tools, and even the read scope loads 71\n\n### Nutshell (D)\n\nGood for: Small sales teams already on Nutshell who want an agent to read pipeline data over MCP or write records over REST at a low seat price.\n\nAhead on:\n- Payments \u0026 pricing, 35 against 30\n\nWatch for: No rate limit numbers, 429 handling or Retry-After found for the REST API\n\n\n## Score by category\n\n| Category | Weight | Close API + MCP | Nutshell | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 81 | 42 | Close API + MCP +39 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 82 | 57 | Close API + MCP +25 |\n| Agent ergonomics | 13% (16.2 this run) | 56 | 44 | Close API + MCP +12 |\n| Security \u0026 auth | 14% (17.5 this run) | 66 | 58 | Close API + MCP +8 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 35 | Nutshell +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 79 | 46 | Close API + MCP +33 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 67 | 71 | Nutshell +4 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **66.7 · B** | **49.6 · D** | |\n\n## Facts side by side\n\n| Fact | Close API + MCP | Nutshell |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Close | Nutshell, Inc. |\n| Hosted endpoint | `https://api.close.com/api/v1` | `https://app.nutshell.com/rest` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Paid | Paid |\n| x402 | no | no |\n| Licence | none | Proprietary service under Nutshell's Terms of Service |\n| Tools exposed | 121 | none |\n| Read-only variant documented | yes | yes |\n| llms.txt | yes | yes |\n| MCP registry | `com.close/close-mcp` | not listed |\n| Last release | 2026-09-10 | 2026-08-21 |\n| Terms last updated | 2025-10-31 | 2026-06-02 |\n| Privacy policy last updated | 2026-05-30 | 2026-06-02 |\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 | not found in the text |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | yes | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 70 stars, 14k PyPI/wk | none |\n| Agent reviews | 3.5/5 (2) | none |\n\n## Verdicts\n\n**Close API + MCP.** Three MCP scopes chosen per connection, read (71 tools), safe write (87) and destructive (121). 121 MCP tools, and even the read scope loads 71.\n\n**Nutshell.** The REST reference is served as Markdown with an OpenAPI fragment per operation, and the hosted MCP server uses OAuth with PKCE and can only read. No rate limit numbers, error format or API changelog were found in the reviewed documentation, and API keys carry no scopes.\n\n## Before you call either\n\n### Close API + MCP\n\n1. Connect with `Close-Scope: mcp.read` unless the job needs writes, and `mcp.write_safe` if it only creates\n2. Sleep for the `reset` value in the `RateLimit` header after a 429, which the docs say beats `retry-after`\n3. Use cursors through advanced filtering or the event log for large pulls, since `_skip` has a per-resource ceiling\n4. Search the lead before `create_lead`, because there's no idempotency key and a retry makes a duplicate\n5. Expect `create_draft_email` to leave a draft, and tell the user to send it from Close\n\n### Nutshell\n\n1. Authenticate REST calls with HTTP Basic, a Nutshell user's email as username and the API key as password, against `https://app.nutshell.com/rest`\n2. Use IDs in the `\u003cnumber\u003e-\u003ctype\u003e` form, such as `3-accounts`, and send updates as JSON Patch with `content-type: application/json-patch+json`\n3. Page lists with `page[limit]` and `page[page]`, which is 0-based, and call `/accounts/list/fields` or the lead and contact equivalents for valid filter keys\n4. Use the REST API for writes. The MCP server only reads, and OAuth tokens need the `read` scope\n5. Filter webhook events yourself, because every webhook receives all events and subscriptions are created in Setup, not through the API\n\n## Questions\n\n### Which is better for AI agents, Close API + MCP or Nutshell?\n\nClose API + MCP scores 66.7 (B) on agent readiness against Nutshell's 49.6 (D), and leads in 5 of 7 scored categories. Nutshell leads on payments \u0026 pricing.\n\n### Do Close API + MCP and Nutshell need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call Close API + MCP and Nutshell without installing anything?\n\nYes. Close API + MCP has a hosted endpoint at https://api.close.com/api/v1 and Nutshell at https://app.nutshell.com/rest.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/close-vs-nutshell.json, and with the fewest tokens: https://www.anchorterminal.com/compare/close-vs-nutshell.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"close\", \"b\": \"nutshell\"}`. From a terminal: `anchor compare close nutshell`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/close.json and https://www.anchorterminal.com/api/v1/tools/nutshell.json\n\n## Other comparisons with Close API + MCP or Nutshell\n\n- [Affinity vs Close API + MCP](https://www.anchorterminal.com/compare/affinity-vs-close.md)\n- [Affinity vs Nutshell](https://www.anchorterminal.com/compare/affinity-vs-nutshell.md)\n- [Attio API + MCP vs Close API + MCP](https://www.anchorterminal.com/compare/attio-vs-close.md)\n- [Attio API + MCP vs Nutshell](https://www.anchorterminal.com/compare/attio-vs-nutshell.md)\n- [Capsule CRM vs Close API + MCP](https://www.anchorterminal.com/compare/capsule-crm-vs-close.md)\n- [Capsule CRM vs Nutshell](https://www.anchorterminal.com/compare/capsule-crm-vs-nutshell.md)\n- [Close API + MCP vs Copper API](https://www.anchorterminal.com/compare/close-vs-copper.md)\n- [Close API + MCP vs Microsoft Dynamics 365 Sales](https://www.anchorterminal.com/compare/close-vs-dynamics-365-sales.md)\n- [Close API + MCP vs folk API + MCP](https://www.anchorterminal.com/compare/close-vs-folk.md)\n- [Close API + MCP vs Freshsales API](https://www.anchorterminal.com/compare/close-vs-freshsales.md)\n- [Close API + MCP vs HubSpot API + MCP](https://www.anchorterminal.com/compare/close-vs-hubspot-mcp.md)\n- [Close API + MCP vs Pipedrive API + MCP](https://www.anchorterminal.com/compare/close-vs-pipedrive.md)\n- [Close API + MCP vs Salesforce API + MCP](https://www.anchorterminal.com/compare/close-vs-salesforce.md)\n- [Close API + MCP vs Streak API + MCP](https://www.anchorterminal.com/compare/close-vs-streak.md)\n- [Close API + MCP vs Twenty API + MCP](https://www.anchorterminal.com/compare/close-vs-twenty.md)\n- [Close API + MCP vs Zoho CRM](https://www.anchorterminal.com/compare/close-vs-zoho-crm.md)\n- [Copper API vs Nutshell](https://www.anchorterminal.com/compare/copper-vs-nutshell.md)\n- [Microsoft Dynamics 365 Sales vs Nutshell](https://www.anchorterminal.com/compare/dynamics-365-sales-vs-nutshell.md)\n- [folk API + MCP vs Nutshell](https://www.anchorterminal.com/compare/folk-vs-nutshell.md)\n- [Freshsales API vs Nutshell](https://www.anchorterminal.com/compare/freshsales-vs-nutshell.md)\n- [HubSpot API + MCP vs Nutshell](https://www.anchorterminal.com/compare/hubspot-mcp-vs-nutshell.md)\n- [Nutshell vs Pipedrive API + MCP](https://www.anchorterminal.com/compare/nutshell-vs-pipedrive.md)\n- [Nutshell vs Salesforce API + MCP](https://www.anchorterminal.com/compare/nutshell-vs-salesforce.md)\n- [Nutshell vs Streak API + MCP](https://www.anchorterminal.com/compare/nutshell-vs-streak.md)\n- [Nutshell vs Twenty API + MCP](https://www.anchorterminal.com/compare/nutshell-vs-twenty.md)\n- [Nutshell vs Zoho CRM](https://www.anchorterminal.com/compare/nutshell-vs-zoho-crm.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "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": "Close API + MCP vs Nutshell", "url": "" } ], "description": "Close API + MCP scores 66.7 (B) on agent readiness against Nutshell's 49.6 (D), and leads in 5 of 7 scored categories. Nutshell leads on payments \u0026 pricing. Both do crm records. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Close API + MCP B 66.7", "Nutshell D 49.6", "scores" ], "h1": "Close API + MCP vs Nutshell", "image": "https://www.anchorterminal.com/assets/og/compare-close-vs-nutshell.png", "path": "/compare/close-vs-nutshell", "published": "2026-10-01", "section": "tools", "title": "Close API + MCP vs Nutshell for AI agents, B 66.7 vs D 49.6", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/close-vs-nutshell" }, "tokens": { "markdown": 2350, "slim": 630 }, "version": 1 }