agentscope-ai/openjudge · skills/claude-authenticity/SKILL.md

claude-authenticity skillA

claude-authenticity is agent-read markdown (skill) from agentscope-ai/openjudge: 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 authentici.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add agentscope-ai/openjudge/claude-authenticity@git:20260310.56772fa
Exact content
mdr add agentscope-ai/openjudge/claude-authenticity@sha256:3f4eddef8e9cf4bb

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_chrozcerksus3fn2.svg)](https://markdownregistry.com/a/art_chrozcerksus3fn2)

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Versions

versioncommittedcommitsizeaudit
git:20260310.56772fa latest2026-03-10 56772fa 22,536 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (22536 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

agentscope-ai/openjudge · 840 stars · license Apache-2.0 · pushed 2026-09-11 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_chrozcerksus3fn2
GET https://markdownregistry.com/api/v1/resolve?ref=agentscope-ai/openjudge/claude-authenticity
GET https://markdownregistry.com/api/v1/blob/3f4eddef8e9cf4bbbadee25db5bd373ef401cf39e632d6e65d2ebc6264041d2f

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.