Access up-to-date, version-specific documentation and code examples from Context7. Use this skill to verify library and framework details.
67
53%
Does it follow best practices?
Impact
83%
1.59xAverage score across 3 eval scenarios
Advisory
Suggest reviewing before use
Optimize this skill with Tessl
npx tessl skill review --optimize ./context7-skill/SKILL.mdSecurity
2 findings — 2 medium severity. This skill can be installed but you should review these findings before use.
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.
Third-party content exposure detected (high risk: 0.80). The skill explicitly calls external Context7 MCP tools (resolve-library-id and query-docs) and the CLI (scripts/context7_cli.py) which return documentation snippets and source URLs (e.g., GitHub) and even instruct the agent to fetch full content from those public sources (SKILL.md "Query Documentation" and the script), meaning the agent will ingest and act on untrusted third‑party web content.
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.
Potentially malicious external URL detected (high risk: 0.80). The skill's runtime client sends tool calls to the external MCP endpoint https://mcp.context7.com/mcp to retrieve documentation/snippets that are directly returned and used in agent responses, meaning remote content from that URL can control prompts/instructions.
de14120
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