# Financial Cents MCP vs OpenProject

> OpenProject scores 57.4 (C) to Financial Cents MCP's 39.9 (E) for issues and tasks. Prices, MCP, x402, uptime and agent notes side by side.

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- 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
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-28

OpenProject scores 57.4 (C) on agent readiness against Financial Cents MCP's 39.9 (E), and leads in 6 of 7 scored categories. Both do issues and tasks.

- Financial Cents MCP: grade E, 39.9/100, rank #1100 of 1221. Markdown https://www.anchorterminal.com/tools/financial-cents-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/financial-cents-mcp.json
- OpenProject: grade C, 57.4/100, rank #707 of 1221. Markdown https://www.anchorterminal.com/tools/openproject.md · JSON https://www.anchorterminal.com/api/v1/tools/openproject.json
- Best project and task management tools for AI agents: https://www.anchorterminal.com/best/project-management/index.md
- All 152 projects comparisons: https://www.anchorterminal.com/compare/project-management/index.md

## Which one, for what

### Financial Cents MCP (E)

Good for: Accounting, bookkeeping and tax firms on Financial Cents Scale who want an assistant to answer workload, billing and client questions and log time or create tasks.

Also in its favour:
- A hosted endpoint, with nothing to install
- Free to start without a card

Watch for: One OAuth scope, `mcp:use`, covers reads and every write, including sending, charging and voiding invoices

### OpenProject (C)

Good for: Teams that want a self-hostable or EU-hosted project tool with Gantt, time tracking and budgets, and an agent working through a documented REST API.

Ahead on:
- Reliability, 52 against 23
- Schema & documentation, 76 against 40
- Agent ergonomics, 70 against 48
- Payments & pricing, 30 against 25
- Maintenance & community, 75 against 50
- Transparency & trust, 87 against 55

Also in its favour:
- Open source

Watch for: 83 advisories published against opf/openproject in the twelve months to 8 October 2026, 13 rated critical, among them remote code execution and SQL injection


## Score by category

| Category | Weight | Financial Cents MCP | OpenProject | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 23 | 52 | OpenProject +29 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 40 | 76 | OpenProject +36 |
| Agent ergonomics | 13% (16.2 this run) | 48 | 70 | OpenProject +22 |
| Security & auth | 14% (17.5 this run) | 61 | 59 | Financial Cents MCP +2 |
| Payments & pricing | 10% (12.5 this run) | 25 | 30 | OpenProject +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 50 | 75 | OpenProject +25 |
| Transparency & trust | 7% (8.8 this run) | 55 | 87 | OpenProject +32 |
| Negative events | ≤15 | -2 | -5 | |
| **Total** | | **39.9 · E** | **57.4 · C** | |

## Facts side by side

| Fact | Financial Cents MCP | OpenProject |
| --- | --- | --- |
| Kind | MCP server | HTTP API |
| Vendor | Financial Cents LLC | OpenProject GmbH |
| Hosted endpoint | `https://app.financial-cents.com/mcp` | no (local only) |
| Transports | Streamable HTTP | HTTP |
| Auth | OAuth | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | Proprietary hosted service under Financial Cents' terms of use, which are hosted on iubenda and weren't read because iubenda's robots.txt disallows them. No source is public | GPL-3.0 for the OpenProject source. Enterprise add-ons need a paid token, and OpenProject Enterprise cloud runs under OpenProject's Terms of Service |
| Tools exposed | 40 | none |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-10-05 | 2026-10-01 |
| Terms last updated |  | 2026-08-06 |
| Privacy policy last updated |  | no date given |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | none | 16k stars |

## Verdicts

**Financial Cents MCP.** The server gives assistants 40 tools over an accounting firm's Financial Cents data, under the user's own permissions and bound to one firm by OAuth. Tool descriptions are detailed and client chat is marked as untrusted. It can send and charge invoices with one undivided scope, and there's no status page, numeric MCP rate limit or readable tool schema.

**OpenProject.** OpenProject's APIv3 has a public OpenAPI 3.1 document with 320 operations, stable error identifiers and optimistic locking, and the same API ships in the free GPL-3.0 Community edition. No request limits are published, API tokens carry their user's full permissions, and 83 security advisories were published in the last twelve months, 13 rated critical.

## Before you call either

### Financial Cents MCP

1. Call `whoami` first and work out date windows from `user.timezone`, not `company.timezone`
2. Resolve clients and projects with `list_clients` or `list_projects` search, since `lookup` covers only reference data such as users, tags and service items
3. Check money units per tool. Invoices, payments, proposals and credit memos use integer cents, while time entries and service-item rates use dollars
4. Never retry a successful `invoice_actions`, `proposal_actions` or credit-memo create, since a second call can email or charge the client again
5. Get the person's approval before any write, and use `preview: true` before sending a proposal

### OpenProject

1. Send the API token as `Authorization: Bearer <token>`, or as the Basic auth password with the user name `apikey`
2. Read the resource first and send its current `lockVersion` with every PATCH. A stale value returns 409 `UpdateConflict`
3. POST to the `/form` endpoint of a work package to learn writable fields and allowed values before creating or updating
4. URL-encode `filters` as a JSON array, and add `pageSize`, `offset` and `select` to keep work package lists small
5. Run the agent as a dedicated user with a narrow project role, and treat work package text and comments as untrusted input

## Questions

### Which is better for AI agents, Financial Cents MCP or OpenProject?

OpenProject scores 57.4 (C) on agent readiness against Financial Cents MCP's 39.9 (E), and leads in 6 of 7 scored categories.

### Do Financial Cents MCP and OpenProject need an API key?

Financial Cents MCP uses an OAuth sign-in. OpenProject takes an API key or an OAuth sign-in.

### Can an agent call Financial Cents MCP and OpenProject without installing anything?

Financial Cents MCP has a hosted endpoint at https://app.financial-cents.com/mcp. No hosted endpoint is listed for OpenProject.

### Are Financial Cents MCP and OpenProject open source?

No open-source release is listed for Financial Cents MCP. OpenProject is open source (GPL-3.0 for the OpenProject source. Enterprise add-ons need a paid token, and OpenProject Enterprise cloud runs under OpenProject's Terms of Service).


## For agents

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

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- [monday.com vs OpenProject](https://www.anchorterminal.com/compare/monday-vs-openproject.md)
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- [OpenProject vs Redmine](https://www.anchorterminal.com/compare/openproject-vs-redmine.md)
- [OpenProject vs Roma](https://www.anchorterminal.com/compare/openproject-vs-roma.md)
- [OpenProject vs Shortcut](https://www.anchorterminal.com/compare/openproject-vs-shortcut.md)
- [OpenProject vs Taiga](https://www.anchorterminal.com/compare/openproject-vs-taiga.md)
- [OpenProject vs Teamwork.com](https://www.anchorterminal.com/compare/openproject-vs-teamwork.md)
- [OpenProject vs Todoist](https://www.anchorterminal.com/compare/openproject-vs-todoist.md)
- [OpenProject vs Trello](https://www.anchorterminal.com/compare/openproject-vs-trello.md)
- [OpenProject vs Wrike](https://www.anchorterminal.com/compare/openproject-vs-wrike.md)
- [OpenProject vs YouTrack](https://www.anchorterminal.com/compare/openproject-vs-youtrack.md)

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