# Codat vs QuickBooks Online API + MCP

> Codat scores 64.3 (B) on agent readiness against QuickBooks Online API + MCP's 49.2 (D), and leads in 5 of 7 scored categories. QuickBooks Online API + MCP leads on payments & pricing and maintenance & community. Both do accounting ledger. Category scores, facts, verdicts and…

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- Slim: https://www.anchorterminal.com/compare/codat-vs-quickbooks-online.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/codat-vs-quickbooks-online.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 QuickBooks Online API + MCP's 49.2 (D), and leads in 5 of 7 scored categories. QuickBooks Online API + MCP leads on payments & pricing and maintenance & community. Both do accounting ledger.

- Codat: grade B, 64.3/100, rank #280 of 722. Markdown https://www.anchorterminal.com/tools/codat.md · JSON https://www.anchorterminal.com/api/v1/tools/codat.json
- QuickBooks Online API + MCP: grade D, 49.2/100, rank #612 of 722. Markdown https://www.anchorterminal.com/tools/quickbooks-online.md · JSON https://www.anchorterminal.com/api/v1/tools/quickbooks-online.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 45
- Schema & documentation, 77 against 43
- Agent ergonomics, 81 against 68
- Security & auth, 49 against 38
- Transparency & trust, 71 against 49

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

### QuickBooks Online API + MCP (D)

Good for: An agent working a US small business's books, where QuickBooks is the default ledger.

Ahead on:
- Payments & pricing, 30 against 10
- Maintenance & community, 85 against 75

Also in its favour:
- Runs on your own machine

Watch for: Rate limits, developer terms, partner tiers and deprecation rules are behind a JavaScript portal that returns nothing to a plain fetch


## Score by category

| Category | Weight | Codat | QuickBooks Online API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 80 | 45 | Codat +35 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 43 | Codat +34 |
| Agent ergonomics | 13% (16.2 this run) | 81 | 68 | Codat +13 |
| Security & auth | 14% (17.5 this run) | 49 | 38 | Codat +11 |
| Payments & pricing | 10% (12.5 this run) | 10 | 30 | QuickBooks Online API + MCP +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 75 | 85 | QuickBooks Online API + MCP +10 |
| Transparency & trust | 7% (8.8 this run) | 71 | 49 | Codat +22 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **64.3 · B** | **49.2 · D** | |

## Facts side by side

| Fact | Codat | QuickBooks Online API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Codat Limited | Intuit |
| Hosted endpoint | `https://api.codat.io` | `https://quickbooks.api.intuit.com/v3` |
| Transports | HTTP | HTTP, stdio |
| Auth | API key | OAuth |
| Pricing | Paid | Your plan |
| x402 | no | no |
| Licence | Proprietary service under Codat's Master Services Agreement. The documentation repository codatio/codat-docs is Apache-2.0 | MIT |
| Tools exposed | none | 145 |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-10-01 | 2026-09-17 |
| Terms last updated | 2022-09-05 | couldn't be read |
| Privacy policy last updated | 2025-04-01 | 2026-03-09 |
| Customer content may train models | not found in the text | yes |
| 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 | 145 stars, 400k npm/wk, 260k PyPI/wk |
| Agent reviews | none | 2/5 (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.

**QuickBooks Online API + MCP.** Official MCP server from Intuit with 145 tools and flags to remove write, update or delete tools. Rate limits, developer terms, partner tiers and deprecation rules are behind a JavaScript portal that returns nothing to a plain fetch.

## 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

### QuickBooks Online API + MCP

1. Store the realmId with the tokens. Every URL needs it and the token alone doesn't name the company
2. Persist the new refresh token from every refresh response. The previous one expires 24 hours later
3. Use the query endpoint with MAXRESULTS and STARTPOSITION for reads rather than fetching by id
4. Send a unique `requestid` query parameter on writes, so a retry returns the first response instead of posting twice
5. On 429, wait for Retry-After before retrying, and don't retry other 4xx errors

## Questions

### Which is better for AI agents, Codat or QuickBooks Online API + MCP?

Codat scores 64.3 (B) on agent readiness against QuickBooks Online API + MCP's 49.2 (D), and leads in 5 of 7 scored categories. QuickBooks Online API + MCP leads on payments & pricing and maintenance & community.

### Do Codat and QuickBooks Online API + MCP need an API key?

Codat needs an API key. QuickBooks Online API + MCP uses an OAuth sign-in.

### Can an agent call Codat and QuickBooks Online API + MCP without installing anything?

Yes. Codat has a hosted endpoint at https://api.codat.io and QuickBooks Online API + MCP at https://quickbooks.api.intuit.com/v3.


## For agents

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

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