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fastmcp-client-cli

Query and invoke tools on MCP servers using fastmcp list and fastmcp call. Use when you need to discover what tools a server offers, call tools, or integrate MCP servers into workflows.

71

Quality

86%

Does it follow best practices?

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SecuritybySnyk

Low

Low-risk findings worth noting

SKILL.md
Quality
Evals
Security

Quality

Content

86%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a lean, highly actionable CLI reference with executable examples and a clear discover-list-call workflow. It is well-structured and self-contained; the only gaps are minor prose trimming and the absence of an explicit validation checkpoint in the workflow.

DimensionReasoningScore

Conciseness

The body is mostly tight code blocks with brief, purposeful lead-ins and avoids explaining what MCP or a CLI is; minor redundancy between the 'Server Targets' table and earlier examples and a few explanatory prose lines could be trimmed.

4 / 5

Actionability

Provides fully executable, copy-paste-ready commands across the common cases (list, call, key=value and JSON args, --input-json overrides, auth, discover), with concrete examples for each.

5 / 5

Workflow Clarity

Includes a clear numbered 'Workflow Pattern' (discover -> list -> call) and a close-match suggestion hint, but lacks an explicit validate/verify checkpoint or error-recovery loop; the operations are non-destructive so no cap applies.

4 / 5

Progressive Disclosure

A single self-contained file with well-organized section headers (Listing Tools, Calling Tools, Server Targets, Auth, Discovering, Workflow Pattern) and no nested external references, making navigation easy; no bundle files are needed.

5 / 5

Total

18

/

20

Passed

Description

87%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is strong: it states concrete capabilities tied to specific CLI commands and provides an explicit 'Use when' trigger clause covering the main use cases. It is specific, distinct, and complete with only minor keyword-coverage gaps.

DimensionReasoningScore

Specificity

Names the MCP-server domain and ties concrete actions to real CLI commands ('fastmcp list', 'fastmcp call'), listing several specific actions (discover tools, call tools, integrate servers); the trailing 'integrate MCP servers into workflows' is slightly generic, leaving a minor coverage gap.

4 / 5

Completeness

Explicitly answers both 'what' ('Query and invoke tools on MCP servers using fastmcp list and fastmcp call') and 'when' ('Use when you need to discover what tools a server offers, call tools, or integrate MCP servers into workflows') with concrete trigger phrases.

5 / 5

Trigger Term Quality

Includes natural phrases a user would say ('discover what tools a server offers', 'call tools', 'MCP servers') with good coverage, though a few common synonyms (e.g. 'list MCP tools', 'invoke a tool') are absent.

4 / 5

Distinctiveness Conflict Risk

Targets a clear niche (CLI tooling for MCP servers via the named 'fastmcp' binary) with distinct triggers, making overlap with unrelated skills unlikely.

5 / 5

Total

18

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
PrefectHQ/fastmcp
Reviewed

Table of Contents

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