cloudflare-mcp-server
Build MCP servers on Cloudflare Workers - the only platform with official remote MCP support. TypeScript-based with OAuth, Durable Objects, and WebSocket hibernation. Prevents 24 documented errors. Use when: deploying remote MCP servers, implementing OAuth, or troubleshooting URL path mismatches, McpAgent exports, CORS issues, IoContext timeouts.
Security
2 findings — 2 medium severity. 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: 0.80). This skill explicitly instructs connecting to arbitrary external MCP servers and OAuth providers (see SKILL.md's "await manager.connect('https://external-mcp.com/sse')" which "auto-discovers tools, resources, prompts", and the GenericOAuthHandler example that fetches "https://provider.com/oauth/userinfo"), meaning the agent is expected to ingest and interpret untrusted third-party content which can change available tools/prompts and thus influence actions.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
Potentially malicious external URL detected (high risk: 0.90). The skill contains an explicit runtime example that connects to an external MCP server which "auto-discovers tools, resources, prompts" — e.g. manager.connect("https://external-mcp.com/sse") — meaning that fetching from that URL at runtime can inject prompt/tool definitions that directly control agent behavior.
- Repository
- jezweb/claude-skills
- Commit
fa91c34
- 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.