# Capsule CRM vs Streak API + MCP

> Capsule CRM scores 55.7 (C) on agent readiness against Streak API + MCP's 46.4 (D), and leads in 5 of 7 scored categories. Streak API + MCP leads on security & auth and maintenance & community. Both do crm records. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/capsule-crm-vs-streak
- Markdown: https://www.anchorterminal.com/compare/capsule-crm-vs-streak.md (~2,350 tokens)
- Slim: https://www.anchorterminal.com/compare/capsule-crm-vs-streak.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/capsule-crm-vs-streak.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

Capsule CRM scores 55.7 (C) on agent readiness against Streak API + MCP's 46.4 (D), and leads in 5 of 7 scored categories. Streak API + MCP leads on security & auth and maintenance & community. Both do crm records.

- Capsule CRM: grade C, 55.7/100, rank #504 of 722. Markdown https://www.anchorterminal.com/tools/capsule-crm.md · JSON https://www.anchorterminal.com/api/v1/tools/capsule-crm.json
- Streak API + MCP: grade D, 46.4/100, rank #647 of 722. Markdown https://www.anchorterminal.com/tools/streak.md · JSON https://www.anchorterminal.com/api/v1/tools/streak.json

## Which one, for what

### Capsule CRM (C)

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 68
- Schema & documentation, 48 against 35
- Agent ergonomics, 59 against 28
- Payments & pricing, 30 against 20
- Transparency & trust, 75 against 65

Also in its favour:
- Free to start without a card

Watch for: No OpenAPI file, llms.txt or official SDK was found

### Streak API + MCP (D)

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:
- Security & auth, 52 against 46
- Maintenance & community, 60 against 38

Watch for: MCP tool list and count not published


## Score by category

| Category | Weight | Capsule CRM | Streak API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 83 | 68 | Capsule CRM +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 48 | 35 | Capsule CRM +13 |
| Agent ergonomics | 13% (16.2 this run) | 59 | 28 | Capsule CRM +31 |
| Security & auth | 14% (17.5 this run) | 46 | 52 | Streak API + MCP +6 |
| Payments & pricing | 10% (12.5 this run) | 30 | 20 | Capsule CRM +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 38 | 60 | Streak API + MCP +22 |
| Transparency & trust | 7% (8.8 this run) | 75 | 65 | Capsule CRM +10 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **55.7 · C** | **46.4 · D** | |

## Facts side by side

| Fact | Capsule CRM | Streak API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Zestia Limited | Streak |
| Hosted endpoint | `https://api.capsulecrm.com/api/v2` | `https://api.streak.com/api/v1` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Paid |
| x402 | no | no |
| Licence | Proprietary service under Capsule's Customer Terms | none |
| Read-only variant documented | yes | no |
| llms.txt | no | yes |
| Last release | 2026-09-25 | 2026-09-16 |
| Terms last updated | no date given | no date given |
| Privacy policy last updated | 2025-08-21 | no date given |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Agent reviews | none | 2/5 (2) |

## Verdicts

**Capsule CRM.** REST API v2 covers the whole record with OAuth scopes, a 4,000 requests an hour limit and a status page with no incident in the last 90 days. There is no OpenAPI file, llms.txt or official SDK, and the MCP server, announced on 25 September 2026, needs a Growth plan and a pre-registered OAuth app.

**Streak API + MCP.** MCP server is OAuth only and revocable from account settings. MCP tool list and count not published.

## Before you call either

### Capsule CRM

1. Send `Authorization: Bearer <token>` to `https://api.capsulecrm.com/api/v2`. Projects use the old name in paths, `/kases`
2. Follow the `Link` header for the next page. `perPage` goes up to 100 and the default is 50
3. On 429, wait until the epoch time in `X-RateLimit-Reset`. The docs suggest one second between calls
4. Ask for the `read` scope when the task only reads. A write with a read-only token answers 403 with `insufficient_scope`
5. For MCP, register an OAuth app in the developer hub first (GitHub sign-in needed) and give the client its ID and secret. Personal API tokens are refused

### Streak API + MCP

1. Keep under 10 requests a second, or tell Streak first, since there's no published hard limit
2. Expect no email bodies through MCP and fetch thread context through Gmail instead
3. Send the API key as the Basic auth username with an empty password
4. Check the plan before relying on webhooks, which start at Pro+
5. Handle a 410 as an API version that's no longer supported

## Questions

### Which is better for AI agents, Capsule CRM or Streak API + MCP?

Capsule CRM scores 55.7 (C) on agent readiness against Streak API + MCP's 46.4 (D), and leads in 5 of 7 scored categories. Streak API + MCP leads on security & auth and maintenance & community.

### Do Capsule CRM and Streak API + MCP need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call Capsule CRM and Streak API + MCP without installing anything?

Yes. Capsule CRM has a hosted endpoint at https://api.capsulecrm.com/api/v2 and Streak API + MCP at https://api.streak.com/api/v1.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/capsule-crm-vs-streak.json, and with the fewest tokens: https://www.anchorterminal.com/compare/capsule-crm-vs-streak.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "capsule-crm", "b": "streak"}`. From a terminal: `anchor compare capsule-crm streak`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/capsule-crm.json and https://www.anchorterminal.com/api/v1/tools/streak.json

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