# Wunder

> Code mode for all your APIs. Wunder is a CLI that installs OpenAPI, GraphQL and MCP APIs like packages; the agent searches for the few operations a task needs and writes one script instead of a chain of tool calls. Credentials stay in the OS keychain.

Wunder works with any agent that can run a shell command: Claude Code, Codex, Cursor and others. Packages are immutable org/name versions pinned in a lockfile. Installing a schema never calls the API.

## Agent quickstart

```
Set up Wunder in this project.
1. npm i -g wunder
   # check: `wunder version` prints a version
2. export WUNDER_REGISTRY=https://getwunder.dev
   # points the CLI at this registry; keep it set for the steps below
3. wunder auth login
   # opens a browser; ask the user to finish sign-in (--no-browser prints the URL)
4. wunder init
   # creates wunder.json and AGENTS.md in the current directory
5. wunder capability search "<what you need>"
   # suggests catalogue APIs with their install line; exit 4 with suggestions is expected here, continue
6. wunder install <org/api>
   # pins the schema in the lockfile; never calls the API
7. wunder credentials login <org/api>
   # the user approves access; never paste tokens into chat
8. wunder script new "<task>"
   # writes, checks and runs a saved script; quick questions: wunder run -e '…'
Run each step and stop on the first failure.
Add --json to any command for one structured result; JSON mode never asks interactive questions.
Exit code 2 means sign-in is required: run wunder auth login. Do not work around sign-in or consent.
```

## Pages

- [Overview](https://getwunder.dev/index.md): what Wunder is, how it works, scripts, models, security, registry and FAQ
- [Explore APIs](https://getwunder.dev/explore): search the API catalogue (sign-in required); agents should use `wunder capability search` instead