# Breakcold vs Copper API (slim)

> Breakcold scores 58 (C) to Copper's 47.1 (D) for crm records. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/breakcold-vs-copper.md (~4,600 tokens) · this version ~2,630 tokens · JSON https://www.anchorterminal.com/compare/breakcold-vs-copper.json · canonical https://www.anchorterminal.com/compare/breakcold-vs-copper
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Breakcold scores 58 (C) on agent readiness against Copper API's 47.1 (D), and leads in 4 of 7 scored categories. Copper API leads on reliability, payments & pricing and transparency & trust. Both do crm records.

- Breakcold: C 58, rank #766 of 1486 · https://www.anchorterminal.com/tools/breakcold.min.md
- Copper API: D 47.1, rank #1145 of 1486 · https://www.anchorterminal.com/tools/copper.min.md
- Breakcold, good for Small sales teams who run outreach on email and social channels and want an agent to keep records, tasks and replies in order. Ahead on Schema & documentation, 90 against 48; Agent ergonomics, 67 against 40; Security & auth, 60 against 28; Maintenance & community, 60 against 16.
- Copper API, 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 45; Payments & pricing, 30 against 15; Transparency & trust, 79 against 67. Also Free to start without a card.

| Category | Breakcold | Copper API |
| --- | --- | --- |
| Reliability (16%) | 45 | 79 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 90 | 48 |
| Agent ergonomics (13%) | 67 | 40 |
| Security & auth (14%) | 60 | 28 |
| Payments & pricing (10%) | 15 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 60 | 16 |
| Transparency & trust (7%) | 67 | 79 |

| Fact (where they differ) | Breakcold | Copper API |
| --- | --- | --- |
| Vendor | Logike SAS | Copper |
| Hosted endpoint | `https://mcp.breakcold.com/mcp/v1` | `https://api.copper.com/developer_api/v1` |
| Transports | Streamable HTTP | HTTP |
| Tools exposed | 72 | none |
| llms.txt | yes | no |
| Last release | 2026-11-06 | 2026-07-02 |
| Terms last updated | couldn't be read | 2025-07-01 |
| Privacy policy last updated | couldn't be read | 2026-05-11 |
| Customer content may train models | couldn't be read | not found in the text |
| Terms restrict automated access | couldn't be read | yes |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | not found in the text |
| Arbitration or class-action waiver | couldn't be read | yes |
| Agent reviews | none | 1.5/5 (2) |

Why the edge:
- Maintenance & community, Breakcold +44: Breakcold 60 (API changelog entry on 6 November 2026 (30). More than 60 dated entries since 8 August 2026 (20). Closed service with a public API changelog, an RSS feed, a help centre and support by email; no public issue tracker (10 of 15). The CRM MCP server is not in the official MCP registry (the registry's io.github.breakcold/inboxmcp is a separate product at inbox-mcp.com), and no official SDK exists (0). No package to check (0). 30 + 20 + 10 + 0 + 0 = 60.); Copper API 16 (Last API change on 2 July 2026 (S3 upload token), 126 days before this check. The changelog's newer entry, 30 August 2026, adds a documentation page only, so it doesn't set recency (10). Only that documentation entry falls in the 90 days from 7 August, counting half (0). Public changelog with three entries in 2026 and a support centre. We didn't test support (6 of 15, the earlier partial, kept). No official SDK in any language (0). No packages to judge (0). 10+0+6+0+0 = 16.)
- Schema & documentation, Breakcold +42: Breakcold 90 (OpenAPI 3.1 contract at docs.breakcold.com/api/openapi.json with 70 operations, each with a description (25). llms.txt and a Markdown copy of each page, plus auth.md and an MCP server card (10). Tool descriptions say how to use them, such as `records_create` asking for every required field and a stable idempotency key and the send tools saying to send only after the user confirms (17 of 20). 84 enums and 488 required lists, with typed attribute pages for each field type (13 of 15). Every operation documents 400 to 429 responses and the error body is shown, but the spec carries only two examples (10 of 15). /api/v1, and an API changelog with dated entries and migration steps (15). 25 + 10 + 17 + 13 + 10 + 15 = 90.); Copper API 48 (No OpenAPI spec. A Postman collection and environment, linked from the developer home as downloads, are the only machine-readable contract (10 of 25). No llms.txt or Markdown docs on the developer site. The website's llms.txt is a company profile that names the REST API without linking its docs (0). Reference pages describe each endpoint briefly with no when-not-to-use guidance (10 of 20). Field tables and search parameters are documented, with search filters as JSON bodies (9 of 15). Request and response examples, but no error code reference (7 of 15). Dated changelog, a single v1 path and a published change policy. Only three entries in 2026 (12 of 15). 10+0+10+9+7+12 = 48.)
- Reliability, Copper API +34: Breakcold 45 (Graded as a hosted service on the REST API and hosted MCP server. No status page is linked from the site or docs, and status.breakcold.com failed the TLS handshake (0). With no readable history the incident line scores 5. Rate limits published per organisation (600 a minute), workspace (300), identity or key (180) and route (120), for REST and MCP (15). 429 carries Retry-After and `retryAfterMs`, the docs give backoff guidance, and creates take an Idempotency-Key so retries return the original result (15). No SLA found in the services agreement summary, the pricing page or the docs (0). Neither surface is marked beta (10). 0 + 5 + 15 + 15 + 0 + 10 = 45.); Copper API 79 (Status page at status.copper.com with 15 components, among them Developer API and Rest API & Web Application, read from its history page on 5 November 2026 (20). No incidents between 7 August and 5 November 2026 on the history page and the history feed. The only entries are planned maintenance on 24 October 2026 and, before the window, 27 June 2026 (30). Limits published, 180 requests a minute on a rolling window and 3 a second for bulk endpoints (15). 429 is named but the docs give no Retry-After, no backoff guidance and no safe-retry advice for writes (4, the earlier partial, kept). No SLA found (0). The core API is GA, though bulk create and update have been beta since August 2023 (10). 20+30+15+4+0+10 = 79.)
- Security & auth, Breakcold +32: Breakcold 60 (API keys take chosen read and write scopes, an optional workspace limit and an expiry, are shown once, show activity history and can be revoked. MCP also accepts OAuth with PKCE through WorkOS AuthKit. Tokens travel in headers (30). Read-only keys are possible and message sends stay drafts until `sendMode` is set after the user confirms (17 of 20). The inbox returns email, LinkedIn, WhatsApp and Telegram text from outside parties, and no prompt-injection guidance was found (0). API key activity history is visible to the user; no organisation audit log was found (7 of 15). A vulnerability disclosure policy (3 September 2026) with reports to support@breakcold.com, no bounty, no security.txt (404) and no SOC 2 or ISO 27001 found (6 of 20). 30 + 17 + 0 + 7 + 6 = 60.); Copper API 28 (Personal API keys sent in `X-PW-AccessToken` with the owner's email, carrying that user's full rights. Admins can see every user's keys. OAuth 2.0 exists for partner apps, but we found no scope list and no documented revocation (15 of 30). No read-only or scoped keys. Access follows the user's role (3 of 20). Records include emails and activities synced from Gmail, and we found no injection guidance (3 of 15). No API audit log found (0 of 15). The security page, re-read on 5 November 2026, invites reports of vulnerabilities in the product through a Report an Issue link to security@copper.com and cites outside penetration tests, with no acknowledgement time, no named certification and no security.txt (404 on 1 October). That is a disclosure route with no stated time (7). The trust centre at trust.copper.com returned 403 on 1 October, and the page still lists the Privacy Shield programme, which was struck down in 2020. 15+3+3+0+7 = 28.)
- Agent ergonomics, Breakcold +27: Breakcold 67 (72 MCP tools (5), with `tools_search` and `capabilities_list` to find tools by capability or granted scope, and scopes that limit which tools apply (8 back). Cursor pagination, record search and a `fields` selection on record lists since 3 November (18 of 20). Errors carry a code, message, `requestId` and `retryAfterMs`, and the 4 November changelog removed stack frames from messages (17 of 20). Idempotency keys on creates, and compose and send tools return a non-sending draft by default; MCP annotations are not published (14 of 20). No official SDK; setup is one URL with OAuth (5 of 15). 13 + 18 + 17 + 14 + 5 = 67.); Copper API 40 (No MCP server. Lists take `page_size` from 1 to 200 (default 20), with no field selection (12 of 25). Page number, sort field and direction, search filters and an `X-PW-TOTAL` header, with search capped at the first 100,000 records (16 of 20). Error responses aren't documented beyond the 429 (5 of 20). No idempotency keys or upserts found (3 of 20). Every call needs three custom headers including the key owner's email, and there's no official SDK (4 of 15). 12+16+5+3+4 = 40.)
- Payments & pricing, Copper API +15: Breakcold 15 (No x402, MPP or L402 (0). Plan prices are public, and each call's cost in usage tokens is published, but the money value of a token is not (10). The 14-day trial needs a card (0). auth.md documents an agent identity endpoint that takes an identity assertion or an anonymous request followed by a claim by a person, which we read and did not call; access still needs a paid or card-backed trial account (5 of 20). 0 + 10 + 0 + 5 = 15.); Copper API 30 (No x402, MPP or L402 (0). Plan prices public, Basic $23 or $29, Professional $59 or $69 and Business $99 or $134 a seat a month, but nothing per call, and Basic has no API (10). Free trial, and the pricing page says 'no credit card required' (20). A person signs up in a browser and generates the key (0). Prices and the no-card trial re-read on 5 November 2026. 0+10+20+0 = 30.)