Agent Skill · Anthropic
Artifacts builder skill
Anthropic's published skill for building richer Claude Artifacts — self-contained interactive web pages produced inside a conversation.
Instructions only — no bundled executables. This skill needs no credentials and no filesystem or network access beyond writing its output, which puts it at the low-risk end of the directory.
What it is, and what it costs you
This skill improves the quality of self-contained interactive pages an agent produces — the class of output where the deliverable is a working page rather than a description of one. Its content is largely conventions: how to structure a single-file application, what constraints the rendering environment imposes, how to keep something complex from breaking in a sandboxed context.
Its risk profile is mild compared with the rest of this directory, and that is worth stating rather than manufacturing a concern. It is instruction text, not bundled code. It needs no credentials, no filesystem scope beyond writing its output, and no network access.
The consideration that does apply is what generated pages do once they exist. A self-contained page assembled by an agent may embed data drawn from the conversation, and a page shared onward carries that data with it. Where such pages are published, the review question is ordinary and easy to forget: does this contain anything that should not be readable by whoever receives the link.
This is a useful reference point for a directory like this one. Not every agent artifact is a security problem, and a review process that flags everything equally trains people to ignore it. A skill that is only instructions, needing no privileges, is genuinely low risk.
Capability profile
What this skill can reach inside your environment, and why a security team cares. Derived from the publisher's documentation, not from a scan.
- instruction text only
No bundled executables, no credentials, no filesystem or network requirement beyond writing output.
- generated page content
Produced pages can embed conversation data and carry it onward when shared.
Before you distribute this to a team
- Review generated pages before sharing
The residual risk is data embedded in output, not the skill itself.
- Pin the version for reproducibility
Low risk still benefits from a known baseline, so behaviour changes are visible as diffs.
Vincosha Assay assessment
not yet assessedWe have not published a scan verdict for Artifacts builder skill.
Everything above is a capability profile compiled by hand from the publisher's own public documentation on 2026-07-25. It describes what this artifact can reach and what to restrict before rolling it out. It is not a security verdict, and it should not be read as one.
When Vincosha Assaypublishes an assessment for this artifact it will appear here with a verdict, the findings behind it, and the date it ran. We would rather leave this space empty than fill it with a guess — inventing a security verdict about somebody else's software would be both wrong and dangerous.
What an assessment covers
- prompt-injection patterns in descriptions and instructions
- credential reads and outbound egress in bundled code
- over-scoped permissions and manifest claims
- typosquatted and impersonating names
- tool-manifest drift since the last approval
- content hash against the version you approved
Sources
Compiled from the publisher's own documentation and repository. Skills change — read the version you are about to install rather than trusting a profile.