fastmcp

skills-sh:jezweb_claude-skills__fastmcp

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B
85/100

First Seen

Feb 18, 2026

Last Scanned

Feb 20, 2026

Findings

6

Score

85/100

HIGH 1
LOW 5

Findings (6)

HIGH
MCP server auto-registration
L2598

Detects automatic registration of MCP servers into agent configuration

mcp
install
server
FIX

Pin the curl/wget download to a specific URL with version and verify the downloaded file's SHA-256 checksum before using it. Prefer package manager installs over raw downloads.

FP?

Likely FP if the download is from a well-known canonical source (e.g., official GitHub release) and the documentation includes checksum verification steps.

LOW
pip install arbitrary package
L16

Detects pip install of arbitrary packages that modify the host environment

pip
install
fa
FIX

Pin all pip packages to exact versions (e.g., pip install package==1.2.3). Use a requirements.txt or pyproject.toml with pinned versions and hash verification.

FP?

Likely FP if the match is in documentation showing how to install the skill's own PyPI package.

LOW
pip install arbitrary package
L20

Detects pip install of arbitrary packages that modify the host environment

pip
install
fa
FIX

Pin all pip packages to exact versions (e.g., pip install package==1.2.3). Use a requirements.txt or pyproject.toml with pinned versions and hash verification.

FP?

Likely FP if the match is in documentation showing how to install the skill's own PyPI package.

LOW
External API response used without validation
L801

Detects patterns where external API responses are used directly without validation or sanitization

API calls or data + without blocking clients. Use
FIX

Validate and sanitize all data received from external APIs before using it in tool operations or agent prompts. Implement schema validation and treat API responses as untrusted input.

FP?

Likely FP if the match is a truncated table cell or documentation fragment that mentions API responses in a descriptive context, not actual unvalidated data processing.

LOW
Non-localhost remote MCP server URL
L1914

Detects MCP server configurations connecting to non-localhost remote URLs

"url"
:
"https://project.fastmcp.app/mcp"
FIX

Change the MCP server URL to localhost or a trusted internal endpoint. If a remote server is required, verify the domain ownership and use HTTPS with certificate validation.

FP?

Likely FP if the URL points to example.com, a documentation domain, or a well-known SaaS API endpoint (e.g., api.openai.com).

LOW
pip install arbitrary package
L2554

Detects pip install of arbitrary packages that modify the host environment

pip install fa
FIX

Pin all pip packages to exact versions (e.g., pip install package==1.2.3). Use a requirements.txt or pyproject.toml with pinned versions and hash verification.

FP?

Likely FP if the match is in documentation showing how to install the skill's own PyPI package.