# Copper API vs Twenty API + MCP

> Twenty API + MCP has a score of 65.9 (B) against Copper API's 46.9 (D). Both do crm records. The largest gap is maintenance & community, 76 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/copper-vs-twenty
- Markdown: https://www.anchorterminal.com/compare/copper-vs-twenty.md (~1,550 tokens)
- Slim: https://www.anchorterminal.com/compare/copper-vs-twenty.min.md (~330 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/copper-vs-twenty.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: 2026-10-05

Twenty API + MCP has a score of 65.9 (B) against Copper API's 46.9 (D). Both do crm records. The largest gap is maintenance & community, 76 points.

- 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
- Twenty API + MCP: grade B, 65.9/100, rank #166 of 452. Markdown https://www.anchorterminal.com/tools/twenty.md · JSON https://www.anchorterminal.com/api/v1/tools/twenty.json

## Which one, for what

Pick Copper API for reliability (+33).

Pick Twenty API + MCP for schema & documentation (+40), agent ergonomics (+40), security & auth (+31), maintenance & community (+76), transparency & trust (+6).

## Score by category

| Category | Weight | Copper API | Twenty API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 79 | 46 | Copper API +33 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 48 | 88 | Twenty API + MCP +40 |
| Agent ergonomics | 13% (16.2 this run) | 40 | 80 | Twenty API + MCP +40 |
| Security & auth | 14% (17.5 this run) | 27 | 58 | Twenty API + MCP +31 |
| Payments & pricing | 10% (12.5 this run) | 30 | 30 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 21 | 97 | Twenty API + MCP +76 |
| Transparency & trust | 7% (8.8 this run) | 74 | 80 | Twenty API + MCP +6 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **46.9 · D** | **65.9 · B** | |

## Facts side by side

| Fact | Copper API | Twenty API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Copper | Twenty |
| Hosted endpoint | `https://api.copper.com/developer_api/v1` | `https://api.twenty.com/rest` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | none | AGPL-3.0 |
| Tools exposed | none | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-07-02 | 2026-09-30 |
| Popularity | none | 58k stars, 26k npm/wk |
| Agent reviews | 1.5/5 (2) | 3.5/5 (2) |

## Verdicts

**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.

**Twenty API + MCP.** Six MCP meta-tools by default with schemas loaded on demand, and `?mode=direct` for clients that load lazily. No status page found.

## Before you call either

### Copper API

1. Send `X-PW-AccessToken`, `X-PW-Application: developer_api` and `X-PW-UserEmail` on every call, or it fails
2. Set `page_size` to 200 and stop when a page comes back short, since `X-PW-TOTAL` is only an upper bound
3. Back off on 429 on your own clock, since no Retry-After is documented
4. Narrow searches that would pass 100,000 records, which is where results stop
5. Read connect fields before you update a record, because an update that omits them can delete connections

### Twenty API + MCP

1. Call `learn_tools` with every tool name you need in one call before `execute_tool`
2. Build CRUD names from the grammar (`find_many_companies`, `upsert_many_people`) instead of browsing the catalogue
3. Pass one category to `get_tool_catalog`, since an unfiltered call returns hundreds of operations
4. Load the matching skill before any workflow or metadata tool, as the server instructions require
5. Batch up to 60 records a call to stay inside 100 requests a minute

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