# Attio API + MCP vs Capsule CRM (slim)

> Attio API + MCP scores 63.1 (B) on agent readiness against Capsule CRM's 55.7 (C), and leads in 4 of 7 scored categories. Capsule CRM leads on reliability and transparency & trust. Both do crm records. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/attio-vs-capsule-crm.md (~2,350 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/attio-vs-capsule-crm.json · canonical https://www.anchorterminal.com/compare/attio-vs-capsule-crm
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Attio API + MCP scores 63.1 (B) on agent readiness against Capsule CRM's 55.7 (C), and leads in 4 of 7 scored categories. Capsule CRM leads on reliability and transparency & trust. Both do crm records.

- Attio API + MCP: B 63.1, rank #318 of 722 · https://www.anchorterminal.com/tools/attio.min.md
- Capsule CRM: C 55.7, rank #504 of 722 · https://www.anchorterminal.com/tools/capsule-crm.min.md
- Attio API + MCP, good for Small teams and startups that want an agent to search across records, notes, emails and calls and then update the CRM, starting free. Ahead on Schema & documentation, 82 against 48; Security & auth, 52 against 46; Maintenance & community, 63 against 38.
- Capsule CRM, good for Small teams already on Capsule who want an agent to read and write contacts, opportunities, projects and tasks over REST with a read-only scope available. Ahead on Reliability, 83 against 77; Transparency & trust, 75 against 68.

| Category | Attio API + MCP | Capsule CRM |
| --- | --- | --- |
| Reliability (16%) | 77 | 83 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 82 | 48 |
| Agent ergonomics (13%) | 62 | 59 |
| Security & auth (14%) | 52 | 46 |
| Payments & pricing (10%) | 30 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 63 | 38 |
| Transparency & trust (7%) | 68 | 75 |

| Fact (where they differ) | Attio API + MCP | Capsule CRM |
| --- | --- | --- |
| Vendor | Attio | Zestia Limited |
| Hosted endpoint | `https://api.attio.com/v2` | `https://api.capsulecrm.com/api/v2` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Licence | none | Proprietary service under Capsule's Customer Terms |
| Tools exposed | 42 | none |
| Read-only variant documented | no | yes |
| llms.txt | yes | no |
| Last release | 2026-10-01 | 2026-09-25 |
| Terms last updated | 2025-11-01 | no date given |
| Privacy policy last updated | 2026-06-01 | 2025-08-21 |
| Terms restrict benchmarking | yes | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 9.9k npm/wk | none |
| Agent reviews | 3/5 (2) | none |