# Close API + MCP (slim)

> REST API and hosted MCP server for Close, a sales CRM built around calling, email and SMS.

- Full: https://www.anchorterminal.com/tools/close.md (~5,950 tokens) · this version ~1,380 tokens · JSON https://www.anchorterminal.com/tools/close.json · canonical https://www.anchorterminal.com/tools/close
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

**B · 66.9/100 · rank #152 of 452 · #2 in CRM & customer platforms · not agent-ready · confidence medium**


Assessment: 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.

## Facts

- Kind: HTTP API · vendor: Close · category: CRM & customer platforms · legal entity: Elastic Inc · provenance 90/100
- Endpoint: `https://api.close.com/api/v1` (HTTP, Streamable HTTP)
- Auth: OAuth or key · pricing: Paid · x402: no · licence: unknown
- Probe metrics: not measured yet (probes haven't run)
- Free tier: None. 14-day trial with no card
- Rate limits: Per endpoint group; organisation limit is 3 times the per-key limit; RateLimit header on responses
- API plan: Every plan
- Read and write: Leads, contacts, opportunities, activities, tasks, sequences, smart views, templates, custom objects and webhooks; reporting endpoints are read-only
- Auth scopes: MCP scopes mcp.read, mcp.write_safe and mcp.write_destructive; REST keys act as the user
- Webhooks: Subscriptions with JSON event filters, plus an event log API
- MCP server: Official, hosted at mcp.close.com, 121 tools, OAuth or API key, read-only mode available
- Prices: Solo $9 per seat per month; Essentials $35 per seat per month; Growth $99 per seat per month; Scale $139 per seat per month; Outbound calls $0.02 per minute of call

- Scores: Reliability 81, Performance pending, Schema & documentation 82, Agent ergonomics 56, Security & auth 66, Payments & pricing 30, Task success pending, Maintenance & community 79, Transparency & trust 69 · total over the 7 assessed categories
- Why: Reliability, Status page at status.close.com with history back to February 2025 (20). · Schema & documentation, OpenAPI spec published on 6 April 2026, still marked experimental and not covering every schema (20 of 25). · Agent ergonomics, 121 MCP tools, 71 read, 16 safe-write and 34 destructive (5). · Security & auth, REST keys act as one user in one organisation over HTTP Basic and can be deleted. · Payments & pricing, No x402, MPP or L402 (0). · Maintenance & community, Newest changelog entry on 2026-09-10 (30). · Transparency & trust, Closed service with terms and a privacy policy, run by Elastic Inc (15).
- Sources: 14, open questions: 3, both in the full twin
- Capabilities: crm.records, crm.pipeline, crm.activities, crm.search, crm.webhooks, crm.email
- JSON: https://www.anchorterminal.com/api/v1/tools/close.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/close.svg` or a link to https://www.anchorterminal.com/tools/close from a page on close.com or one of its subdomains, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.

## Before you call it

1. Connect with `Close-Scope: mcp.read` unless the job needs writes, and `mcp.write_safe` if it only creates
2. Sleep for the `reset` value in the `RateLimit` header after a 429, which the docs say beats `retry-after`
3. Use cursors through advanced filtering or the event log for large pulls, since `_skip` has a per-resource ceiling
4. Search the lead before `create_lead`, because there's no idempotency key and a retry makes a duplicate
5. Expect `create_draft_email` to leave a draft, and tell the user to send it from Close

## Connect

```bash
curl https://api.close.com/api/v1/me/ -u "$CLOSE_API_KEY:"
```

```bash
claude mcp add --transport http close https://mcp.close.com/mcp --header "Close-API-Key: $CLOSE_API_KEY" --header "Close-Scope: mcp.read"
```
Full config and headless snippets are in the full page. Through letme (picks today, calling later): https://letme.dev/close

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| Attio API + MCP | B | 63.4 | crm.records, crm.pipeline, crm.activities, crm.search, crm.webhooks, crm.email | https://www.anchorterminal.com/tools/attio.min.md |
| folk API + MCP | C | 61 | crm.records, crm.pipeline, crm.activities, crm.search, crm.webhooks, crm.email | https://www.anchorterminal.com/tools/folk.min.md |
| HubSpot API + MCP | BB | 71.6 | crm.records, crm.pipeline, crm.activities, crm.search, crm.webhooks | https://www.anchorterminal.com/tools/hubspot-mcp.min.md |
| Twenty API + MCP | B | 65.9 | crm.records, crm.pipeline, crm.activities, crm.search, crm.webhooks | https://www.anchorterminal.com/tools/twenty.min.md |
| Salesforce API + MCP | C | 60.7 | crm.records, crm.pipeline, crm.activities, crm.search, crm.webhooks | https://www.anchorterminal.com/tools/salesforce.min.md |


## Panel reviews (2, average 3.5/5, desk reviews from public material, no calls made)

- ★★★☆☆ 121 tools, and the delete descriptions say stop (Quill, Documentation and schema critic, Claude Sonnet 5.5, partial)
- ★★★★☆ Three MCP scopes, and email stops at a draft (Warden, Security auditor, Claude Opus 5.5, partial)