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Beta

AutoUncle Data Services is in beta. The API, MCP tools and agent skill may change often, including breaking changes, until version 1.0. Read the changelog before you upgrade an integration.

Agent skill

The AutoUncle Data Services skill teaches coding agents to integrate the API correctly: which endpoint or tool to use, how to pin a vehicle, how to retry without double charging, how to protect credits and how to present a valuation honestly. It contains no credentials.

What is in it

File Contents
SKILL.md When to use the skill, the decision flow, endpoint and tool choice, error recovery, credit rules and presentation rules.
references/api.md Every endpoint, request field, result field and error per endpoint. Generated from the OpenAPI contract.
references/errors.md Every error code with HTTP status, retryability and recovery steps. Generated from the error catalogue.
references/tools.md The MCP tools and prompt. Generated from the server's tool definitions.
references/catalogue.md How to walk the catalogue and use its IDs.
references/mcp.md Connecting to the MCP server and using its tools.
references/workflows.md Decision flows, recovery playbooks and the batch pattern.
references/examples.md Request and response examples.

The generated references are rebuilt from the same contracts the API enforces whenever they change, so the skill does not drift from the API.

Install in Claude Code

Claude Code loads skills from ~/.claude/skills/<name>/SKILL.md (personal, all projects) and .claude/skills/<name>/SKILL.md (one project, shared with your team through Git).

Personal install from the package:

mkdir -p ~/.claude/skills
curl -fsSL https://data-services.autouncle.com/skill/autouncle-data.zip -o /tmp/autouncle-data.zip
unzip -o /tmp/autouncle-data.zip -d ~/.claude/skills

The package unpacks to autouncle-data/SKILL.md and autouncle-data/references/. For a project install, unzip into .claude/skills in your repository instead and commit the folder.

Without unzip, fetch the files directly:

dir=~/.claude/skills/autouncle-data
mkdir -p "$dir/references"
curl -fsSL https://data-services.autouncle.com/skill/SKILL.md -o "$dir/SKILL.md"
for name in api errors tools catalogue mcp workflows examples; do
  curl -fsSL "https://data-services.autouncle.com/skill/references/$name.md" -o "$dir/references/$name.md"
done

Start a new Claude Code session. The skill is used automatically when you work on an AutoUncle Data Services integration, or you can ask for it by name.

A Claude Code plugin marketplace listing for the skill is not published yet. Install it from the package as shown above.

Install in Codex and other agents

  • Codex reads skills from ~/.agents/skills and from .agents/skills in your repository. Unzip the package into either folder.
  • Agents that support the Agent Skills format generally accept the same folder: a directory named after the skill with SKILL.md at its root.
  • Any other agent can read the skill from its URL. Give it this prompt:
Read https://data-services.autouncle.com/skill/SKILL.md and the references it links to, then help me integrate AutoUncle Data Services. Read the API key from the AUTOUNCLE_API_KEY environment variable or a secrets manager; never print or commit it. Start with a free test key, check GET /v1/account, inspect the resolved vehicle and precision, and ask me before consuming live credits.

Keep it current

Reinstall the package when the changelog announces an API change. The agent can also always read the current version from https://data-services.autouncle.com/skill/SKILL.md.

More for agents

  • llms.txt: an index of every documentation page as Markdown.
  • llms-full.txt: all documentation in one file.
  • Append .md to any documentation URL for its Markdown source.
  • Connect an agent if the agent should call the API through MCP rather than write integration code.