A command for SkillScope, a tool that checks whether coding-agent instructions were followed during a Claude Code session. It captures the session record and opens a browser interface for reviewing the results.

Use it to capture a Claude Code trace, include relevant SKILL.md or project rule files, and create a report for instruction-coverage analysis.

It provides a repeatable way to compare an agent's work with its loaded instruction files and investigate successful or failed runs.

skillscope — Command for Claude Code by mathieu0905/skilllens

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/mathieu0905/skilllens

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/commands/mathieu0905/skilllens/skillscope/github.svg)](https://agentmods.dev/commands/mathieu0905/skilllens/skillscope)

Your own site

<a href="https://agentmods.dev/commands/mathieu0905/skilllens/skillscope"><img src="https://agentmods.dev/badge/commands/mathieu0905/skilllens/skillscope/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/commands/mathieu0905/skilllens/skillscope"><img src="https://agentmods.dev/badge/commands/mathieu0905/skilllens/skillscope.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 367 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00367
Opus 5.5	$0.00000	$0.00147
Sonnet 5.5	$0.00000	$0.00073
Haiku 4.5	$0.00000	$0.00037

Measured 2mo ago against content hash 8df7be4f6b81, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skillscope scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

integrations/claude-code/.claude/commands/skillscope.md · 56 lines

What it actually says

SkillScope

Capture the current Claude Code run for SkillScope skill coverage analysis, then open the SkillScope browser UI.

Use When

The user asks whether a SKILL.md, rule, or instruction file was actually followed.
The user wants a SkillScope report for a Claude Code session.
The user wants to compare with-skill vs no-skill or success vs failure trajectories.

Required Inputs

Ask for missing paths instead of guessing:

Claude Code session trace JSONL/JSON.
Loaded SKILL.md, CLAUDE.md, project rule, memory, or playbook file paths.
Optional task prompt file or result JSON.

Command

From the SkillScope repository root:

npm run capture -- \
  --agent claude_code \
  --trace <claude-session.jsonl> \
  --skill <path-to-SKILL.md> \
  --task <optional-task.md> \
  --result <optional-result.json> \
  --out skillscope.capture.json

Then analyze:

npm run analyze -- --bundle skillscope.capture.json --out skillscope-report

If this command file is used from the SkillScope checkout, use the shared capture CLI directly:

npm run capture -- \
  --agent claude_code \
  --trace <claude-session.jsonl> \
  --skill <path-to-SKILL.md> \
  --out skillscope.capture.json

Then run npm run open to launch the browser UI if it is not already open.

Boundaries

Do not claim AI-based analysis unless an LLM judge pass was explicitly configured.
The default analyzer is heuristic and local.
Confirm loaded skill paths whenever possible; discovered files are weaker provenance.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 56 lines · 0 tokens per session scan A 8df7be4f6b81

Subscribe to this mod's changes

skillscope is a command published in the GitHub repository mathieu0905/skilllens (2 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 367 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Analytics and metrics

skillscope next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
skillscopemathieu0905/skilllens	Command	2	4mo ago	MIT	A	0	Claude Code
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specifygithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
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convergegithub/spec-kit	Command	148k	yesterday	MIT	A	35	Claude Code
implementgithub/spec-kit	Command	148k	yesterday	MIT	A	14	Claude Code