Firmary for ChatGPT

app.firmary/mcp

Work with an accounting firm's clients, engagements, tasks, documents, messages and billing.

client:ChatGPT transport:streamable-http runtime:npm

Install Firmary in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://os.firmary.app/api/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs