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andyxinweiminicloud

Update Signature Verifier

cross-platform ✓ Security Clean
514
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Install in OpenClaw
/install update-signature-verifier
Description
Helps verify the cryptographic integrity of skill updates by checking whether each version is signed by the same key as the original install, detecting key c...
Usage Guidance
This skill is conceptually coherent: it describes how to audit signature continuity and doesn't request secrets. However, it is instruction-only and has no source, homepage, or shipped code — that means you don't have verifiable provenance or an executable implementation to inspect. Before using it in an automated or high-risk context: 1) ask the publisher (or the installer) for the exact implementation or scripts the agent will run (concrete curl/python commands, URLs contacted, and signature verification steps); 2) do not supply private keys or credentials to the skill; 3) if the agent will fetch JWKS or version artifacts, verify those endpoints are the legitimate publisher endpoints; and 4) if you need higher assurance, run the verification offline yourself by providing the version/signature metadata to the agent rather than allowing it to fetch artifacts autonomously. If you cannot obtain implementation details or provenance, treat this as a useful guide but limit its autonomous privileges and network access.
Capability Analysis
Type: OpenClaw Skill Name: update-signature-verifier Version: 1.0.0 The skill's stated purpose is to verify the cryptographic integrity of skill updates, a legitimate security function. The `SKILL.md` clearly describes this purpose, its checks, and usage, without any evidence of prompt injection attempts against the agent. While it requires `curl` and `python3`, these are standard binaries and their use is consistent with the stated security auditing purpose. There are no indicators of malicious intent such as data exfiltration, unauthorized execution, persistence, or obfuscation within the provided files.
Capability Assessment
Purpose & Capability
The skill documents a signature-continuity auditor which plausibly needs network fetches and signature verification; the declared required binaries (curl, python3) are reasonable for those tasks but the SKILL.md does not show concrete commands or code that use them. Because the skill is instruction-only, the binary list is advisory rather than enforced — acceptable but worth noting.
Instruction Scope
The instructions describe the inputs needed (skill id, version metadata) and the outputs (per-version fingerprint comparisons, chain status). There are no instructions to read unrelated files, access environment variables, or exfiltrate data to unexpected endpoints. The SKILL.md does not instruct the agent to request private keys or other credentials.
Install Mechanism
No install spec and no code files are present (instruction-only). That minimizes installation risk — nothing will be downloaded or written by an installer as part of a declared install step.
Credentials
No environment variables, credentials, or config paths are required. That is proportional for a verification/audit skill which only needs version and signing metadata as input.
Persistence & Privilege
always is false and model invocation is not disabled (normal defaults). The skill does not declare any persistent system-level changes or access to other skills' configs.
How to Use
  1. Make sure OpenClaw is installed (local or Docker)
  2. Run the install command in chat: /install update-signature-verifier
  3. After installation, invoke the skill by name or use /update-signature-verifier
  4. Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
- Initial release of update-signature-verifier (v1.0.0). - Detects cryptographic signature continuity across skill updates, flagging key changes, signature gaps, and unsigned versions. - Reports on signing key provenance and whether each version is signed by the same key as the original install. - Outputs a detailed audit including chain-of-custody status and recommended actions for gaps or anomalies. - Aims to surface supply chain risks that occur via update channels, not just at install time.
Metadata
Slug update-signature-verifier
Version 1.0.0
License
All-time Installs 0
Active Installs 0
Total Versions 1
Frequently Asked Questions

What is Update Signature Verifier?

Helps verify the cryptographic integrity of skill updates by checking whether each version is signed by the same key as the original install, detecting key c... It is an AI Agent Skill for Claude Code / OpenClaw, with 514 downloads so far.

How do I install Update Signature Verifier?

Run "/install update-signature-verifier" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.

Is Update Signature Verifier free?

Yes, Update Signature Verifier is completely free (open-source). You can download, install and use it at no cost.

Which platforms does Update Signature Verifier support?

Update Signature Verifier is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).

Who created Update Signature Verifier?

It is built and maintained by andyxinweiminicloud (@andyxinweiminicloud); the current version is v1.0.0.

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