{ "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": 66.9, "grade": "B", "agentReady": false, "rank": 152, "ranked": true, "rankOf": 452, "categoryRank": 2, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 56, "maintenance": 79, "payments": 30, "reliability": 81, "schema": 82, "security": 66, "transparency": 69 }, "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.", "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": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 66.9 } ], "editorialScores": { "ergonomics": 56, "maintenance": 79, "payments": 30, "reliability": 81, "schema": 82, "security": 66, "transparency": 47 }, "provenanceScore": 90 }, "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": 90 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/close.json", "live": { "slug": "close", "probe": { "target": "https://api.close.com/api/v1", "method": "get", "lastAt": "2026-10-05T02:29:53.907683948Z", "lastOk": true, "lastStatus": 404, "lastMs": 460, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 451, "p95ms24h": 483, "samples24h": 273, "samples30d": 1131, "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": 29, "ok": 29 } ] }, "vendorStatus": { "page": "https://status.close.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-05T02:28:52.910416394Z" }, "versions": [ { "registry": "mcp-registry", "name": "com.close/close-mcp", "version": "1.0.1", "seenAt": "2026-10-04T23:42:40.113054682Z" }, { "registry": "pypi", "name": "closeio", "version": "2.1", "released": "2023-07-25", "seenAt": "2026-10-04T16:23:53.305468963Z" } ], "pypiWeekly": 15714, "securityTxt": { "url": "https://close.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:53.560881658Z" }, "llmsTxt": { "url": "https://developer.close.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:25.065645829Z" }, "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": "2026-10-04T15:42:31.835062892Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "01d1d3db4bfc" }, { "url": "https://www.close.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:49:47.37644721Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "66f3d7175437" }, { "url": "https://close.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:41:52.492605916Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "af850e65f4fd" }, { "url": "https://close.com/tos", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:41:54.712254409Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "8f7850d129a1" } ], "updatedAt": "2026-10-05T02:29:53.907683948Z" } }, "b": { "slug": "copper", "name": "Copper API", "vendor": "Copper", "vendorUrl": "https://www.copper.com", "kind": "http-api", "category": "crm", "summary": "REST API for Copper, the CRM built around Google Workspace.", "url": "https://www.anchorterminal.com/tools/copper", "markdownUrl": "https://www.anchorterminal.com/tools/copper.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/copper.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/copper.json", "transports": [ "http" ], "remoteUrl": "https://api.copper.com/developer_api/v1", "packages": [], "auth": "mixed", "authNotes": "Personal API key sent in the `X-PW-AccessToken` header together with `X-PW-Application: developer_api` and `X-PW-UserEmail` (the email of the key's owner). Keys are generated under System settings, API Keys, and admins can see every user's keys. OAuth 2.0 (added 2023-08-11) is the route for partner integrations.", "pricing": "paid", "pricingNotes": "No free plan, only a trial, and the pricing page says no card is needed. Basic $29 a seat a month billed monthly or $23 billed yearly (2,500 contacts), Professional $69 or $59 (15,000 contacts), Business $134 or $99 (unlimited contacts). API access is documented for Professional, Business and the trial, not Basic (https://www.copper.com/pricing).", "priceSummary": "$59 / seat-mo", "where": "hosted", "x402": { "level": "no", "evidence": "No payments. API access follows the Copper subscription.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://developer.copper.com", "capabilities": [ "crm.records", "crm.pipeline", "crm.activities", "crm.search", "crm.webhooks" ], "tags": [ "hosted", "closed-source", "webhooks", "no-card" ], "lastRelease": "2026-07-02", "graded": true, "anchor": { "graded": true, "score": 46.9, "grade": "D", "agentReady": false, "rank": 392, "ranked": true, "rankOf": 452, "categoryRank": 8, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 40, "maintenance": 21, "payments": 30, "reliability": 79, "schema": 48, "security": 27, "transparency": 74 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Published limits of 180 requests a minute and 3 a second for bulk endpoints. No official MCP server, OpenAPI spec or llms.txt.", "strengths": [ "Published limits of 180 requests a minute and 3 a second for bulk endpoints", "No status incidents between 3 July and 1 October 2026", "Privacy policy states US-only hosting, a 180-day purge after expiry and no AI training on Workspace API data", "Webhook subscriptions per entity and event, with custom headers", "Trial with no card, per the pricing page" ], "weaknesses": [ "No official MCP server, OpenAPI spec or llms.txt", "API keys carry the owner's full rights, and admins can see every user's key", "No documented error format, Retry-After or idempotency", "Basic plan has no API access, so the first plan with it costs $59 a seat a month yearly", "Three changelog entries in 2026, and bulk endpoints still beta since 2023" ], "agentNotes": [ "Send `X-PW-AccessToken`, `X-PW-Application: developer_api` and `X-PW-UserEmail` on every call, or it fails", "Set `page_size` to 200 and stop when a page comes back short, since `X-PW-TOTAL` is only an upper bound", "Back off on 429 on your own clock, since no Retry-After is documented", "Narrow searches that would pass 100,000 records, which is where results stop", "Read connect fields before you update a record, because an update that omits them can delete connections" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 1.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 46.9 } ], "editorialScores": { "ergonomics": 40, "maintenance": 21, "payments": 30, "reliability": 79, "schema": 48, "security": 27, "transparency": 58 }, "provenanceScore": 90 }, "connect": { "http": "curl https://api.copper.com/developer_api/v1/account \\\n -H \"X-PW-AccessToken: $COPPER_API_KEY\" -H \"X-PW-Application: developer_api\" \\\n -H \"X-PW-UserEmail: $COPPER_USER_EMAIL\" -H \"Content-Type: application/json\"" }, "letme": { "capability": "https://letme.dev/crm.records", "tool": "https://letme.dev/copper" }, "area": "business", "unitPrices": [ { "item": "Professional (first plan with API access)", "unit": "seat-month", "usd": 59, "note": "billed yearly; $69 billed monthly" }, { "item": "Business", "unit": "seat-month", "usd": 99, "note": "billed yearly; $134 billed monthly" }, { "item": "Basic (no API access)", "unit": "seat-month", "usd": 23, "note": "billed yearly; $29 billed monthly" } ], "provenance": { "legalEntity": "Copper CRM, Inc.", "domain": "copper.com", "domainRegistered": "1994-02-07", "domainNote": "copper.com was registered in 1994, long before the company renamed itself from ProsperWorks.", "endpointOnVendorDomain": true, "terms": "https://www.copper.com/terms", "privacy": "https://www.copper.com/privacy", "statusPage": "https://status.copper.com", "changelog": "https://developer.copper.com/introduction/changelog.html", "securityTxt": "none", "checked": "2026-09-30", "score": 90 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/copper.json", "live": { "slug": "copper", "probe": { "target": "https://api.copper.com/developer_api/v1", "method": "get", "lastAt": "2026-10-05T02:29:54.279328125Z", "lastOk": true, "lastStatus": 404, "lastMs": 263, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 272, "p95ms24h": 318, "samples24h": 273, "samples30d": 1131, "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": 29, "ok": 29 } ] }, "vendorStatus": { "page": "https://status.copper.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-05T02:28:54.701441531Z" }, "securityTxt": { "url": "https://copper.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:57.060789799Z" }, "domain": { "domain": "copper.com", "registered": "1994-02-07", "source": "https://rdap.verisign.com/com/v1/domain/copper.com", "checkedAt": "2026-10-04T13:03:56.935081383Z" }, "pages": [ { "url": "https://developer.copper.com/introduction/changelog.html", "kind": "changelog", "status": 304, "checkedAt": "2026-10-04T15:42:34.122892693Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "3189aee56061" }, { "url": "https://www.copper.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:49:53.60663384Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "eb662c54be04" }, { "url": "https://www.copper.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:49:55.673814308Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "435089e1aba9" }, { "url": "https://www.copper.com/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:49:57.653852445Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "27e69e8dc412" } ], "updatedAt": "2026-10-05T02:29:54.279328125Z" } }, "summary": "Close API + MCP has a score of 66.9 (B) against Copper API's 46.9 (D). Both do crm records. The largest gap is maintenance \u0026 community, 58 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/close-vs-copper", "json": "https://www.anchorterminal.com/compare/close-vs-copper.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/close-vs-copper.md", "slim": "https://www.anchorterminal.com/compare/close-vs-copper.min.md" }, "markdown": "Close API + MCP has a score of 66.9 (B) against Copper API's 46.9 (D). Both do crm records. The largest gap is maintenance \u0026 community, 58 points.\n\n- Close API + MCP: grade B, 66.9/100, rank #152 of 452. Markdown https://www.anchorterminal.com/tools/close.md · JSON https://www.anchorterminal.com/api/v1/tools/close.json\n- Copper API: grade D, 46.9/100, rank #392 of 452. Markdown https://www.anchorterminal.com/tools/copper.md · JSON https://www.anchorterminal.com/api/v1/tools/copper.json\n\n## Which one, for what\n\nPick Close API + MCP for schema \u0026 documentation (+34), agent ergonomics (+16), security \u0026 auth (+39), maintenance \u0026 community (+58).\n\nPick Copper API for transparency \u0026 trust (+5).\n\n## Score by category\n\n| Category | Weight | Close API + MCP | Copper API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 81 | 79 | Close API + MCP +2 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 82 | 48 | Close API + MCP +34 |\n| Agent ergonomics | 13% (16.2 this run) | 56 | 40 | Close API + MCP +16 |\n| Security \u0026 auth | 14% (17.5 this run) | 66 | 27 | Close API + MCP +39 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 30 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 79 | 21 | Close API + MCP +58 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 69 | 74 | Copper API +5 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **66.9 · B** | **46.9 · D** | |\n\n## Facts side by side\n\n| Fact | Close API + MCP | Copper API |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Close | Copper |\n| Hosted endpoint | `https://api.close.com/api/v1` | `https://api.copper.com/developer_api/v1` |\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 | none |\n| Tools exposed | 121 | none |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | no |\n| MCP registry | `com.close/close-mcp` | not listed |\n| Last release | 2026-09-10 | 2026-07-02 |\n| Popularity | 70 stars, 14k PyPI/wk | none |\n| Agent reviews | 3.5/5 (2) | 1.5/5 (2) |\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**Copper API.** Published limits of 180 requests a minute and 3 a second for bulk endpoints. No official MCP server, OpenAPI spec or llms.txt.\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### Copper API\n\n1. Send `X-PW-AccessToken`, `X-PW-Application: developer_api` and `X-PW-UserEmail` on every call, or it fails\n2. Set `page_size` to 200 and stop when a page comes back short, since `X-PW-TOTAL` is only an upper bound\n3. Back off on 429 on your own clock, since no Retry-After is documented\n4. Narrow searches that would pass 100,000 records, which is where results stop\n5. Read connect fields before you update a record, because an update that omits them can delete connections\n\n## Other comparisons with Close API + MCP or Copper API\n\n- [Attio API + MCP vs Close API + MCP](https://www.anchorterminal.com/compare/attio-vs-close.md)\n- [Attio API + MCP vs Copper API](https://www.anchorterminal.com/compare/attio-vs-copper.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- [Copper API vs folk API + MCP](https://www.anchorterminal.com/compare/copper-vs-folk.md)\n- [Copper API vs Freshsales API](https://www.anchorterminal.com/compare/copper-vs-freshsales.md)\n- [Copper API vs HubSpot API + MCP](https://www.anchorterminal.com/compare/copper-vs-hubspot-mcp.md)\n- [Copper API vs Pipedrive API + MCP](https://www.anchorterminal.com/compare/copper-vs-pipedrive.md)\n- [Copper API vs Salesforce API + MCP](https://www.anchorterminal.com/compare/copper-vs-salesforce.md)\n- [Copper API vs Streak API + MCP](https://www.anchorterminal.com/compare/copper-vs-streak.md)\n- [Copper API vs Twenty API + MCP](https://www.anchorterminal.com/compare/copper-vs-twenty.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-05", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "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 Copper API", "url": "" } ], "description": "Close API + MCP has a score of 66.9 (B) against Copper API's 46.9 (D). Both do crm records. The largest gap is maintenance \u0026 community, 58 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Close API + MCP B 66.9", "Copper API D 46.9", "scores" ], "h1": "Close API + MCP vs Copper API", "image": "https://www.anchorterminal.com/assets/og/compare-close-vs-copper.png", "path": "/compare/close-vs-copper", "published": "2026-10-01", "section": "tools", "title": "Close API + MCP vs Copper API for AI agents, B 66.9 vs D 46.9", "toc": null, "updated": "2026-10-05", "url": "https://www.anchorterminal.com/compare/close-vs-copper" }, "tokens": { "markdown": 1550, "slim": 330 }, "version": 1 }