# Codat vs Rutter Accounting API

> Codat scores 64.3 (B) on agent readiness against Rutter Accounting API's 55.6 (C), and leads in 5 of 7 scored categories. Rutter Accounting API leads on payments & pricing. Both do accounting unified. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/codat-vs-rutter
- Markdown: https://www.anchorterminal.com/compare/codat-vs-rutter.md (~2,100 tokens)
- Slim: https://www.anchorterminal.com/compare/codat-vs-rutter.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/codat-vs-rutter.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

Codat scores 64.3 (B) on agent readiness against Rutter Accounting API's 55.6 (C), and leads in 5 of 7 scored categories. Rutter Accounting API leads on payments & pricing. Both do accounting unified.

- Codat: grade B, 64.3/100, rank #257 of 629. Markdown https://www.anchorterminal.com/tools/codat.md · JSON https://www.anchorterminal.com/api/v1/tools/codat.json
- Rutter Accounting API: grade C, 55.6/100, rank #448 of 629. Markdown https://www.anchorterminal.com/tools/rutter.md · JSON https://www.anchorterminal.com/api/v1/tools/rutter.json

## Which one, for what

### Codat (B)

Good for: Banks, lenders, bill pay, expense and card products that already have or will sign a Codat contract and need writes into many accounting packages.

Ahead on:
- Reliability, 80 against 67
- Agent ergonomics, 81 against 67
- Security & auth, 49 against 36
- Maintenance & community, 75 against 62
- Transparency & trust, 71 against 48

Watch for: No public price. The pricing page returns 404 and fees are set in an order form

### Rutter Accounting API (C)

Good for: Lenders, spend-management and fintech products that read ledgers alongside commerce and payment platforms, and that need writes an agent can retry safely.

Ahead on:
- Payments & pricing, 20 against 10

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

Watch for: Production prices are quote-only


## Score by category

| Category | Weight | Codat | Rutter Accounting API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 80 | 67 | Codat +13 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 79 | Rutter Accounting API +2 |
| Agent ergonomics | 13% (16.2 this run) | 81 | 67 | Codat +14 |
| Security & auth | 14% (17.5 this run) | 49 | 36 | Codat +13 |
| Payments & pricing | 10% (12.5 this run) | 10 | 20 | Rutter Accounting API +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 75 | 62 | Codat +13 |
| Transparency & trust | 7% (8.8 this run) | 71 | 48 | Codat +23 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **64.3 · B** | **55.6 · C** | |

## Facts side by side

| Fact | Codat | Rutter Accounting API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Codat Limited | Rutter |
| Hosted endpoint | `https://api.codat.io` | `https://production.rutterapi.com/versioned` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under Codat's Master Services Agreement. The documentation repository codatio/codat-docs is Apache-2.0 | none |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-10-01 | 2026-09-24 |
| Terms last updated | 2022-09-05 | couldn't be read |
| Privacy policy last updated | 2025-04-01 | couldn't be read |
| Customer content may train models | not found in the text | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | 2.7k npm/wk, 222 PyPI/wk | none |
| Agent reviews | none | 3/5 (2) |

## Verdicts

**Codat.** Public OpenAPI specs, an Idempotency-Key header on writes, Retry-After on 429 and a written three-month deprecation notice suit an agent that retries. Access is the limitation. No price or self-serve signup is published, the general Accounting API is closed to new clients, and API keys carry no scopes.

**Rutter Accounting API.** Idempotency-Key header on writes, and prefer_sync writes that fall back to async after 30 seconds. Production prices are quote-only.

## Before you call either

### Codat

1. Send `Authorization: Basic <base64 of the API key>` to https://api.codat.io. The Portal shows the ready-made header value
2. Send a new GUID as `Idempotency-Key` on every POST and PATCH, and reuse the same key when retrying after a 429
3. Treat writes as asynchronous on most APIs. Keep the push operation key and wait for the `{dataType}.write.successful` or `.unsuccessful` webhook
4. Call the Get model (options) endpoint for the connection before a create or update, because required fields differ by accounting package
5. Filter with `query=modifiedDate>...` and keep `pageSize` at 100. The daily quota is 1,000 requests times one plus the number of active connected companies

### Rutter Accounting API

1. Send X-Rutter-Version: 2024-08-31 on every call
2. Send an Idempotency-Key on every create so a retry after a timeout doesn't write twice
3. Use response_mode=prefer_sync and handle the 202 async_response anyway
4. Treat 452 as the ledger throttling you and 429 as Rutter's 500-per-10-seconds organisation limit
5. Keep access_token out of logged URLs. The docs only show it as a query parameter

## Questions

### Which is better for AI agents, Codat or Rutter Accounting API?

Codat scores 64.3 (B) on agent readiness against Rutter Accounting API's 55.6 (C), and leads in 5 of 7 scored categories. Rutter Accounting API leads on payments & pricing.

### Do Codat and Rutter Accounting API need an API key?

Both need an API key.

### Can an agent call Codat and Rutter Accounting API without installing anything?

Yes. Codat has a hosted endpoint at https://api.codat.io and Rutter Accounting API at https://production.rutterapi.com/versioned.


## For agents

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

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