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round3ai/three-dev

unversioned · d19757064e92MIT

Integrate three.dev into a codebase and work with recorded LLM traffic: route calls through the proxy, define use cases and quality metrics, investigate failure modes, and test prompt or model changes with offline experiments, using the three.dev MCP server.

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three.dev agent skills

Agent Skills for three.dev, bundled with the three.dev MCP server at https://mcp.three.dev/mcp.

Getting started

Paste this into your coding agent:

Install github.com/round3ai/skills and run its three-dev-setup skill in this repository.

Install by hand

# Claude Code
claude plugin marketplace add round3ai/skills
claude plugin install three-dev@three-dev

# Codex
codex plugin marketplace add round3ai/skills
codex plugin install three-dev

# Any other agent: cursor, github-copilot, kiro-cli, cline, ...
npx skills add round3ai/skills -y --agent <agent>

The Claude Code and Codex plugins also set up the three.dev MCP server. Sign in when your client asks, or run /mcp in Claude Code.

If you installed with npx skills, add the MCP server to your client's config:

ClientConfig
Cursor.cursor/mcp.json: {"mcpServers": {"three-dev": {"url": "https://mcp.three.dev/mcp"}}}
VS Code.vscode/mcp.json: {"servers": {"three-dev": {"type": "http", "url": "https://mcp.three.dev/mcp"}}}
Kiro.kiro/settings/mcp.json: {"mcpServers": {"three-dev": {"url": "https://mcp.three.dev/mcp"}}}
ClineMCP Servers panel: the URL above, transport Streamable HTTP

Then paste this into your coding agent:

Run the three-dev-setup skill in this repository.

Update with claude plugin update three-dev or npx skills update.

Skills

SkillWhat it does
three-dev-experimentsRuns an offline experiment in three.dev to test a prompt, model, or reasoning change on recorded production traffic, and reads the results.
three-dev-failure-modesInvestigates production quality problems in an LLM feature that three.dev already records.
three-dev-quality-metrics-setupSets up quality metrics for an LLM feature that three.dev already records.
three-dev-setupAdds three.dev to a codebase so its LLM calls are recorded.

Contributing

The skills are published here automatically and also served by the three.dev MCP server. Changes to skills/ or the table above are overwritten on the next publish, so open an issue instead.

License

MIT