mcp-developer
Use when building, debugging, or extending MCP servers or clients that connect AI systems with external tools and data sources. Invoke to implement tool handlers, configure resource providers, set up stdio/HTTP/SSE transport layers, validate schemas with Zod or Pydantic, debug protocol compliance issues, or scaffold complete MCP server/client projects using TypeScript or Python SDKs.
90
100%
Does it follow best practices?
Impact
81%
1.15xAverage score across 6 eval scenarios
Advisory
Suggest reviewing before use
Security
1 medium severity finding. This skill can be installed but you should review these findings before use.
W011: Third-party content exposure detected (indirect prompt injection risk)
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
Third-party content exposure detected (high risk: 0.90). The skill's reference examples (e.g., references/resources.md showing repo://{owner}/{repo}/issues with fetchGitHubIssues and references/tools.md showing an HTTP fetch_api tool that fetches an arbitrary args.url) explicitly describe fetching and returning content from public, user-generated third-party sources which the agent is expected to read and which could influence subsequent tool use or decisions.
- Repository
- jeffallan/claude-skills
- Commit
5b76101
- Audited
- Security analysis
Is this your skill?
If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.