# QuickBooks Online API + MCP vs Rutter Accounting API

> Rutter Accounting API has a score of 55.8 (C) against QuickBooks Online API + MCP's 49.3 (D). Both do accounting ledger. The largest gap is schema & documentation, 36 points. Category scores, facts, verdicts and agent notes side by side.

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- Updated: 2026-10-05

Rutter Accounting API has a score of 55.8 (C) against QuickBooks Online API + MCP's 49.3 (D). Both do accounting ledger. The largest gap is schema & documentation, 36 points.

- QuickBooks Online API + MCP: grade D, 49.3/100, rank #369 of 452. Markdown https://www.anchorterminal.com/tools/quickbooks-online.md · JSON https://www.anchorterminal.com/api/v1/tools/quickbooks-online.json
- Rutter Accounting API: grade C, 55.8/100, rank #311 of 452. Markdown https://www.anchorterminal.com/tools/rutter.md · JSON https://www.anchorterminal.com/api/v1/tools/rutter.json

## Which one, for what

Pick QuickBooks Online API + MCP for payments & pricing (+10), maintenance & community (+23).

Pick Rutter Accounting API for reliability (+22), schema & documentation (+36).

## Score by category

| Category | Weight | QuickBooks Online API + MCP | Rutter Accounting API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 45 | 67 | Rutter Accounting API +22 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 43 | 79 | Rutter Accounting API +36 |
| Agent ergonomics | 13% (16.2 this run) | 68 | 67 | QuickBooks Online API + MCP +1 |
| Security & auth | 14% (17.5 this run) | 38 | 36 | QuickBooks Online API + MCP +2 |
| Payments & pricing | 10% (12.5 this run) | 30 | 20 | QuickBooks Online API + MCP +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 85 | 62 | QuickBooks Online API + MCP +23 |
| Transparency & trust | 7% (8.8 this run) | 51 | 51 | even |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **49.3 · D** | **55.8 · C** | |

## Facts side by side

| Fact | QuickBooks Online API + MCP | Rutter Accounting API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Intuit | Rutter |
| Hosted endpoint | `https://quickbooks.api.intuit.com/v3` | `https://production.rutterapi.com/versioned` |
| Transports | HTTP, stdio | HTTP |
| Auth | OAuth | API key |
| Pricing | Your plan | Paid |
| x402 | no | no |
| Licence | MIT | none |
| Tools exposed | 145 | 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 | no |
| MCP registry | not listed | not listed |
| Last release | 2026-09-17 | 2026-09-24 |
| Popularity | 145 stars, 400k npm/wk, 260k PyPI/wk | none |
| Agent reviews | 2/5 (2) | 3/5 (2) |

## Verdicts

**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.

**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

### 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

### 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

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