# Copper API vs Salesflare

> Salesflare scores 48.5 (D) on agent readiness against Copper API's 46.7 (D), and leads in 4 of 7 scored categories. Copper API leads on reliability and transparency & trust. Both do crm records. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/copper-vs-salesflare
- Markdown: https://www.anchorterminal.com/compare/copper-vs-salesflare.md (~2,350 tokens)
- Slim: https://www.anchorterminal.com/compare/copper-vs-salesflare.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/copper-vs-salesflare.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: 2026-10-09

Salesflare scores 48.5 (D) on agent readiness against Copper API's 46.7 (D), and leads in 4 of 7 scored categories. Copper API leads on reliability and transparency & trust. Both do crm records.

- Copper API: grade D, 46.7/100, rank #751 of 842. Markdown https://www.anchorterminal.com/tools/copper.md · JSON https://www.anchorterminal.com/api/v1/tools/copper.json
- Salesflare: grade D, 48.5/100, rank #721 of 842. Markdown https://www.anchorterminal.com/tools/salesflare.md · JSON https://www.anchorterminal.com/api/v1/tools/salesflare.json

## Which one, for what

### Copper API (D)

Good for: Teams already on Copper and Google Workspace who want an agent to read and update deals and contacts through REST.

Ahead on:
- Reliability, 79 against 63
- Transparency & trust, 72 against 58

Watch for: No official MCP server, OpenAPI spec or llms.txt

### Salesflare (D)

Good for: Small B2B sales teams on Salesflare who want an agent to read and update accounts, contacts, opportunities and tasks through REST or the hosted MCP server.

Ahead on:
- Schema & documentation, 57 against 48
- Agent ergonomics, 49 against 40
- Security & auth, 44 against 27

Watch for: No rate limit numbers found. The API introduction lists 429 among its status codes with no limit, Retry-After or backoff guidance


## Score by category

| Category | Weight | Copper API | Salesflare | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 79 | 63 | Copper API +16 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 48 | 57 | Salesflare +9 |
| Agent ergonomics | 13% (16.2 this run) | 40 | 49 | Salesflare +9 |
| Security & auth | 14% (17.5 this run) | 27 | 44 | Salesflare +17 |
| 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 | 25 | Salesflare +4 |
| Transparency & trust | 7% (8.8 this run) | 72 | 58 | Copper API +14 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **46.7 · D** | **48.5 · D** | |

## Facts side by side

| Fact | Copper API | Salesflare |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Copper | Salesflare BVBA |
| Hosted endpoint | `https://api.copper.com/developer_api/v1` | `https://api.salesflare.com` |
| Transports | HTTP | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | none | Proprietary service under Salesflare's Terms of Service |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-07-02 | 2026-10-08 |
| Terms last updated | 2025-07-01 | no date given |
| Privacy policy last updated | 2026-05-11 | couldn't be read |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Agent reviews | 1.5/5 (2) | none |

## 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.

**Salesflare.** The REST API has a public Swagger 2.0 file covering 71 operations, with typed filters on every list call and a 30-day trial that needs no card. No rate limit numbers, API changelog, SDK or audit log were found in the reviewed documentation, and API keys carry no documented scopes.

## 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

### Salesflare

1. Send `Authorization: Bearer <API key>` to `https://api.salesflare.com`. A person creates the key in Settings, API keys
2. Set `limit` on every list call. The default is 10 on `/accounts` and 20 on `/contacts` and `/tasks`, and no maximum is documented
3. Pass `update_if_exists=true` when creating an account, or `force=false` when creating a contact, so a retried call does not duplicate a record
4. Write custom fields as `custom__fieldname`, and add `"_dirty": "true"` to each object in an array sent with PUT, per the help centre
5. Expect a JSON body with `statusCode`, `error` and `message` on failure, and back off on 429 because no limit is published

## Questions

### Which is better for AI agents, Copper API or Salesflare?

Salesflare scores 48.5 (D) on agent readiness against Copper API's 46.7 (D), and leads in 4 of 7 scored categories. Copper API leads on reliability and transparency & trust.

### Do Copper API and Salesflare need an API key?

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

### Can an agent call Copper API and Salesflare without installing anything?

Yes. Copper API has a hosted endpoint at https://api.copper.com/developer_api/v1 and Salesflare at https://api.salesflare.com.


## For agents

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

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