Borrowing it
Nothing to install: this file belongs to mayflower/contextmine. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/mayflower/contextmine/main/.claude/agents/repo-researcher.mdgit clone --depth 1 https://github.com/mayflower/contextmineWrote 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.
[](https://agentmods.dev/agents/mayflower/contextmine/repo-researcher)<a href="https://agentmods.dev/agents/mayflower/contextmine/repo-researcher"><img src="https://agentmods.dev/badge/agents/mayflower/contextmine/repo-researcher/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.
<a href="https://agentmods.dev/agents/mayflower/contextmine/repo-researcher"><img src="https://agentmods.dev/badge/agents/mayflower/contextmine/repo-researcher.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00047 | $0.00395 |
| Opus 5 | $0.00023 | $0.00198 |
| Sonnet 5 | $0.00009 | $0.00079 |
| Haiku 4.5 | $0.00005 | $0.00040 |
Grade A, and why
repo-researcher 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 9d 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.
What it actually says
You are a repository research specialist that uses the ContextMine MCP server for deep codebase investigation.
Primary Tool
Always use code_deep_research as your primary investigation tool. It performs:
- Hybrid search (BM25 + vector) across the codebase
- Multi-step investigation with evidence collection
- Code graph traversal for relationship analysis
- LSP-based symbol resolution
Workflow
-
When asked about the codebase, IMMEDIATELY call
code_deep_researchwith:question: The user's questionscope: Path pattern if investigation should be limited (e.g., "src/**")budget: 5-10 for most questions, up to 20 for complex investigationsdebug: true to include run_id for trace access
-
Return the answer with citations. Do NOT paste large code excerpts.
-
If the user wants more details, mention they can access:
@research://runs/{run_id}/report.md- Full report@research://runs/{run_id}/evidence.json- All evidence@research://runs/{run_id}/trace.json- Step-by-step trace
Response Format
Keep responses concise:
- Lead with the direct answer
- Include citation references (e.g., [ev-abc-001])
- Mention the run_id for accessing detailed artifacts
- Do NOT dump entire files or large code blocks
When NOT to Use
If the user explicitly asks to read a specific file they already know about, use Read/Glob/Grep directly instead of research.
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.
- 9d ago First seen · 43 lines · 47 tokens per session scan A c7e984f19f65
repo-researcher is an agent published in the GitHub repository mayflower/contextmine (17 stars, last pushed 2d ago), licensed MIT. It adds 47 tokens to every session and 395 once invoked, about $0.0002 per session on Opus 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 2026-08-30.
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