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The npm package includes the TypeScript SDK, the thinkfeel CLI, and a SKILL.md file that tells coding agents how to use ThinkFeel safely. The ThinkFeel Plugin adds a separate Codex and Claude Code setup flow for agent-managed local env files. The plugin does not call npx thinkfeel login. It uses a local plugin helper, asks you to approve an env-file destination, opens the same Playground browser approval flow, and writes THINKFEEL_API_KEY to that env file. Use thinkfeel login when you want a standalone CLI profile.

Install for agents

Codex users should add the ThinkFeel marketplace and install the plugin:
Start a new Codex thread after installation so Codex loads the ThinkFeel plugin skill and MCP server. Claude Code users can install the same plugin from the ThinkFeel marketplace:
Run /reload-plugins or start a new Claude Code session after installation.

Install the package or run one-off

Login, name keys, and switch profiles

Configure CI or local scripts

Generate, personify, inspect JSON, and clear config

Inspect the package skill

Browser login URL details

Automated setup should use the ThinkFeel Plugin in Codex or Claude Code, or npx thinkfeel login for CLI profiles. Do not ask users to paste API keys into chat. If browser login is unavailable, use configure --api-key-env or configure --api-key-stdin.