A small agent that runs one command supplied by the caller and reports whether it succeeded, along with the end of its output.

Use it when another agent needs to execute a specific shell command and check its exit code or final output.

It gives a simple way to run a known command while keeping the result compact and easy to inspect.

How retospect/precis-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to retospect/precis-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/retospect/precis-mcp/main/.claude/agents/cmd-runner.md

Clone the repo

git clone --depth 1 https://github.com/retospect/precis-mcp

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/agents/retospect/precis-mcp/cmd-runner/github.svg)](https://agentmods.dev/agents/retospect/precis-mcp/cmd-runner)

Your own site

<a href="https://agentmods.dev/agents/retospect/precis-mcp/cmd-runner"><img src="https://agentmods.dev/badge/agents/retospect/precis-mcp/cmd-runner/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/agents/retospect/precis-mcp/cmd-runner"><img src="https://agentmods.dev/badge/agents/retospect/precis-mcp/cmd-runner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 672 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 unknown 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	$0.00035	$0.00672
Opus 5.5	$0.00014	$0.00269
Sonnet 5.5	$0.00007	$0.00134
Haiku 4.5	$0.00003	$0.00067

Measured 13d ago against content hash ab3da8089f39, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cmd-runner 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 13d 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.

.claude/agents/cmd-runner.md · 54 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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.

13d ago Changed · +3 lines ab3da8089f39
28d ago Changed · -5 tokens per session d6430790113e
1mo ago Changed · +5 lines 34fe1fe07393
1mo ago Changed 71db3f5d6596
1mo ago Changed · +19 tokens per session f3e6d72cec3b
2mo ago First seen · 46 lines · 21 tokens per session scan A 6ab452f8826d

Subscribe to this mod's changes

cmd-runner is an agent published in the GitHub repository retospect/precis-mcp (11 stars, last pushed today), licensed GPL-3.0. It adds 35 tokens to every session and 672 once invoked, about $0.0001 per session on Opus 5.5. 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.

LLM Python ai-agent mcp mcp-server model-context-protocol

cmd-runner next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
cmd-runnerretospect/precis-mcp	Agent	11	today	GPL-3.0	A	35	Claude Code
researcherdinglebear-ai/axon	Agent	4	14d ago	AGPL-3.0	A	82	Claude Code
playwright-test-generatormicrosoft/playwright	Agent	99k	yesterday	Apache-2.0	A	151	Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginners	Agent	79k	4d ago	MIT	A	33	Claude Code
code-revieweranthropics/claude-cookbooks	Agent	54k	2d ago	MIT	A	52	Claude Code
AVM Owner Triagegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	61	Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	11	Claude Code

precis-mcp: Agent for Claude Code