# Affinity vs Streak API + MCP (slim)

> Affinity scores 63.4 (B) on agent readiness against Streak API + MCP's 46.4 (D), and leads in 5 of 7 scored categories. Streak API + MCP leads on payments & pricing. Both do crm records. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/affinity-vs-streak.md (~2,400 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/affinity-vs-streak.json · canonical https://www.anchorterminal.com/compare/affinity-vs-streak
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Affinity scores 63.4 (B) on agent readiness against Streak API + MCP's 46.4 (D), and leads in 5 of 7 scored categories. Streak API + MCP leads on payments & pricing. Both do crm records.

- Affinity: B 63.4, rank #311 of 722 · https://www.anchorterminal.com/tools/affinity.min.md
- Streak API + MCP: D 46.4, rank #647 of 722 · https://www.anchorterminal.com/tools/streak.min.md
- Affinity, good 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. Ahead on Schema & documentation, 91 against 35; Agent ergonomics, 66 against 28; Security & auth, 66 against 52; Maintenance & community, 70 against 60; Transparency & trust, 70 against 65. Also Runs on your own machine.
- Streak API + MCP, good for Small teams that run deals out of Gmail and want an agent to update pipelines and add tasks without seeing email bodies. Ahead on Payments & pricing, 20 against 10.

| Category | Affinity | Streak API + MCP |
| --- | --- | --- |
| Reliability (16%) | 64 | 68 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 91 | 35 |
| Agent ergonomics (13%) | 66 | 28 |
| Security & auth (14%) | 66 | 52 |
| Payments & pricing (10%) | 10 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 70 | 60 |
| Transparency & trust (7%) | 70 | 65 |

| Fact (where they differ) | Affinity | Streak API + MCP |
| --- | --- | --- |
| Vendor | Project Affinity, Inc. | Streak |
| Hosted endpoint | `https://api.affinity.co/v2` | `https://api.streak.com/api/v1` |
| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP |
| Licence | Proprietary service under Affinity's master subscription agreement. The `affinity-mcp` package on PyPI is MIT | none |
| Tools exposed | 75 | none |
| Read-only variant documented | yes | no |
| Last release | 2026-10-02 | 2026-09-16 |
| Terms last updated |  | no date given |
| Privacy policy last updated | 2026-07-01 | no date given |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | 268 PyPI/wk | none |
| Agent reviews | none | 2/5 (2) |