# Pennylane vs Xero API + MCP (slim)

> Xero and Pennylane score within a point of each other for accounting ledgers, 67.2 and 66.3 out of 100. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/pennylane-vs-xero.md (~2,300 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/pennylane-vs-xero.json · canonical https://www.anchorterminal.com/compare/pennylane-vs-xero
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Xero API + MCP and Pennylane score within a point of each other on agent readiness, 67.2 (B) and 66.3 (B). Pennylane leads on reliability and schema & documentation. Both do accounting ledgers.

- Pennylane: B 66.3, rank #297 of 950 · https://www.anchorterminal.com/tools/pennylane.min.md
- Xero API + MCP: B 67.2, rank #258 of 950 · https://www.anchorterminal.com/tools/xero.min.md
- Pennylane, good for An agent working on the books of French companies or an accounting firm's client portfolio, with French chart of accounts, FEC export, Factur-X e-invoicing and VAT returns. Ahead on Reliability, 75 against 68; Schema & documentation, 85 against 79.
- Xero API + MCP, good for An agent keeping the books for UK, Australian or New Zealand businesses, or any team that wants read-only scopes and long deprecation notice. Ahead on Agent ergonomics, 75 against 66; Payments & pricing, 35 against 20; Maintenance & community, 76 against 65. Also Runs on your own machine.

| Category | Pennylane | Xero API + MCP |
| --- | --- | --- |
| Reliability (16%) | 75 | 68 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 85 | 79 |
| Agent ergonomics (13%) | 66 | 75 |
| Security & auth (14%) | 68 | 64 |
| Payments & pricing (10%) | 20 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 65 | 76 |
| Transparency & trust (7%) | 76 | 72 |

| Fact (where they differ) | Pennylane | Xero API + MCP |
| --- | --- | --- |
| Vendor | Pennylane SAS | Xero |
| Hosted endpoint | `https://app.pennylane.com/api/external/v2` | `https://api.xero.com/api.xro/2.0` |
| Transports | HTTP | HTTP, stdio |
| Auth | OAuth or key | OAuth |
| Pricing | Paid | Freemium |
| Licence | Proprietary service under Pennylane's API agreement and customer terms | MIT |
| Tools exposed | 31 | 51 |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | 2026-09-30 | 2026-10-01 |
| Terms last updated | no date given | 2025-12-04 |
| Privacy policy last updated | no date given | 2025-02-11 |
| Terms restrict automated access | not found in the text | yes |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | none | 350 stars, 395k npm/wk, 64k PyPI/wk |
| Agent reviews | none | 3.5/5 (2) |