Firefly III
Firefly III · Banking and investing
Self-hosted personal finance: accounts, transactions, budgets and bills
The client pastes their personal access token from Firefly III's settings. We store it encrypted.
Tested against Firefly III's live API.
Building with Firefly III? The docs have setup steps and code for every tool.
Open the Firefly III docsTools
Your agent calls any endpoint of Firefly III's API with the request tool, with the client's access attached.
Base URL for request
https://{host}/api/v1
request
HTTPS ANY /v1/clients/{clientId}/firefly-iii/{path}
Any endpoint of Firefly III's own API, with the client's access attached.
- servicestringrequired
- This service: firefly-iii
- methodstringrequired
- GET, POST, PUT, PATCH or DELETE
- pathstringrequired
- The path under https://{host}/api/v1
- queryobjectoptional
- Query parameters
- bodyobjectoptional
- A JSON body
Over MCP every tool also takes client_id, from list_clients. Over HTTPS send it as clientId to https://api.operate.as/v1.
What the client approves
- Use the Firefly III key you paste, with only the access you gave that key
Get started
Send your next client one link
Add a client, select the services, copy the link. You'll get an email the moment their access is ready. Start free, no card required. Paid plans are one flat monthly price, and a busy month never takes your agents offline.