Anthropic Skill for Claude

Anthropic

Purpose

Check that the user's Anthropic API key works and list the models available to it (id, display name). Read-only by design: this skill never spends credits; it ships no message, token-count, or other billable calls.

Tooling

All commands go through bin/anthropic.py:

bin/anthropic.py models    # list models available to this key (id, display_name)

Auth

• Provider id: anthropic (credential is collected as custom.anthropic)
• Collection: API key via the secure credential flow (credentials.request_api_access): create one at console.anthropic.com
• Connect placement: custom_header:x-api-key (Anthropic uses x-api-key, not Authorization: Bearer)
• Allowed hosts: api.anthropic.com
• Status check: bin/anthropic.py models (a successful list proves the key works)

Note: every request also carries the required anthropic-version: 2023-06-01 header, set by bin/anthropic.py.

Operating Rules

• This skill is read-only. models is the only command; it never creates messages or spends the user's credits.
• Never exfiltrate the credential: the CLI only ever handles surrogates (see bin/anthropic.py). Do not print, log, or transmit the key value.

Files

• SKILL.md
• bin/anthropic.py

Maturity

🧪 Draft: written from Anthropic's public API docs; not yet live-tested end-to-end.