# API & MCP: One API and MCP server for every portal

> Call any method or workflow from your backend with one POST request, or connect Claude, Cursor and Codex over MCP with read and write guardrails.

Page: https://fous.com/product/api-and-mcp

Try methods with 100 credits a month and no credit card. API keys and MCP are on every plan, including Free.

## From an API key to your code and your AI agents

### A key for each service or agent

Once saved, a key is shown masked, and you can rename or revoke it whenever you need to.

### One POST to /v1/runs calls any method

Every method has its call ready in cURL, TypeScript and Python. Send its typed input and get JSON back in its output schema.

### Add Fous to your agent with one command

Claude Code, Codex and Cursor can then search, build and run your methods over MCP, without driving a browser themselves.

### Decide what your agents are allowed to do

Actions that change something go through run_action, so your agent’s host can ask a person first, and read-only access can’t act at all.

## Frequently asked questions

### How do I call a method?

POST to /v1/runs with the method and its input, and get JSON in its output schema.

### Which agents work with Fous?

Claude, Cursor, Codex, or any agent that speaks HTTP MCP.

### Can an agent change things in a portal?

Only through run_action, which its host can ask a person to approve, and never with read-only access.

### What about long runs?

Wait up to 60 seconds for the answer, or read a longer run later by its id.

### Does the free plan include the API?

API keys and the MCP server are on every plan, including Free, where your code and agents run your methods and builds start in Studio.

### Do agents see our passwords?

No. They call Fous with a Fous key, and portal sessions never enter the conversation.

## Call your first method

The API and MCP server are on every plan. Start free with 100 credits a month and no card, or book a demo about your integration.

Docs: https://docs.fous.com/guides/mcp