What is research_codebase?

A codebase research command that investigates a software project to answer questions and combines findings from multiple helper agents.

Use it to trace how code works, find related files, and answer questions about a codebase.

It reduces the need to search files manually and assemble the answer yourself.

How golf-mcp/golf-testing configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to golf-mcp/golf-testing. 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/golf-mcp/golf-testing/main/.claude/commands/research_codebase.md

Clone the repo

git clone --depth 1 https://github.com/golf-mcp/golf-testing

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/golf-mcp/golf-testing/research_codebase/github.svg)](https://agentmods.dev/commands/golf-mcp/golf-testing/research_codebase)

Your own site

<a href="https://agentmods.dev/commands/golf-mcp/golf-testing/research_codebase"><img src="https://agentmods.dev/badge/commands/golf-mcp/golf-testing/research_codebase/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/golf-mcp/golf-testing/research_codebase"><img src="https://agentmods.dev/badge/commands/golf-mcp/golf-testing/research_codebase.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 1,766 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	$0.00000	$0.01766
Opus 5.5	$0.00000	$0.00706
Sonnet 5.5	$0.00000	$0.00353
Haiku 4.5	$0.00000	$0.00177

Measured 2mo ago against content hash a4832ce755d3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

research_codebase 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.

.claude/commands/research_codebase.md · 168 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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.

2mo ago First seen · 168 lines · 0 tokens per session scan A a4832ce755d3

Subscribe to this mod's changes

research_codebase is a command published in the GitHub repository golf-mcp/golf-testing (5 stars, last pushed 1y ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 1,766 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.

Research cicd m mcp mcp-security mcp-server

research_codebase next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
research_codebasegolf-mcp/golf-testing	Command	5	1y ago	none	A	0	Claude Code
ingest-devpunt-labs/quarry	Command	7	yesterday	MIT	A	36	Claude Code
sugar-taskroboticforce/sugar	Command	100	yesterday	none	A	14	Claude Code
resumeTaoidle/plan-cascade	Command	133	7mo ago	MIT	A	32	Claude Code
nextgrainulation/wheat	Command	20	6mo ago	MIT	A	0	Claude Code
checklistgithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
clarifygithub/spec-kit	Command	148k	yesterday	MIT	A	27	Claude Code

golf-testing: Command for Claude Code