Alright, so we're all downloading and running skills from the OpenClaw marketplace now. That's great. But has anyone actually looked at the supply chain for these things? Or are we just taking the "official" stamp at face value and hoping for the best?

I'm not suggesting malice, but we've seen this movie before with other plugin ecosystems. A skill is just code, and code has dependencies. Those dependencies have their own dependencies. It's turtles, potentially compromised turtles, all the way down. A skill that promises to summarize documents could be pulling in a half-dozen PyPI packages, one of which might decide to start exfiltrating your prompt context next Tuesday.

So, my question is practical: **What's the current, actionable method for doing a basic supply chain audit on a downloaded OpenClaw skill?** I'm talking about the kind of check you can do *before* you run it in an environment with any sensitive data.

Here's my starting point, but it feels clunky:

1. **Get the SBOM.** Ideally, the skill author provides a signed Software Bill of Materials. Does the marketplace even enforce or encourage this? I haven't seen it. So we're likely stuck generating one ourselves.
```bash
# Example using syft on a unpacked skill directory
syft dir:/path/to/unpacked-skill -o cyclonedx-json > skill_sbom.json
```
2. **Analyze Dependencies.** Feed that SBOM into a vulnerability scanner. Trivy handles this well.
```bash
trivy sbom skill_sbom.json
```
3. **Check Signatures.** This is the hazy part. The skill tarball might be signed by OpenClaw's infrastructure (does it use Sigstore?), but that only vouches for source integrity, *not* for the integrity of the dependency tree. How do we verify the build provenance? Was it built in a tamper-proof pipeline, or on someone's laptop?

The real gap seems to be between the "official marketplace" and the reality of the skill's construction. What are we missing? Are there tools hooking into the OpenClaw runtime itself to monitor dependency fetches at load time? Or is everyone just crossing their fingers?

I'm less interested in vendor promises and more in the scripts and commands people are actually running. What's your audit workflow?