Individual skill
claude-authenticity
Detect whether an API endpoint is backed by genuine Claude (not a wrapper, proxy, or impersonator) using 9 weighted rule-based checks that mirror the claude-verify project. Also extracts injected system prompts from providers that override Claude's identity. Fully self-contained — copy the code below and run, no extra packages beyond httpx. Use when the user wants to verify a Claude API key or endpoint, check if a third-party Claude service is authentic, audit API providers for Claude authenticity, test multiple models in parallel, or discover what system prompt a provider has injected.
skills/claude-authenticity/SKILL.md
Source commit eb34c3b94c908d875eda025e7863bc765c44ad76
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- Last checked
- Nov 10, 2026
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- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
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# Claude Authenticity Skill
Verify whether an API endpoint serves genuine Claude and optionally extract any
injected system prompt.
**No installation required beyond `httpx`.** Copy the code blocks below directly
into a single `.py` file and run — no openjudge, no cookbooks, no other setup.
```bash
pip install httpx
```
## The 9 checks (mirrors [claude-verify](https://github.com/molloryn/claude-verify))
