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.
git clone --depth 1 https://github.com/Helweg/open-codebase-indexWrote 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/commands/helweg/open-codebase-index/index)<a href="https://agentmods.dev/commands/helweg/open-codebase-index/index"><img src="https://agentmods.dev/badge/commands/helweg/open-codebase-index/index/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/commands/helweg/open-codebase-index/index"><img src="https://agentmods.dev/badge/commands/helweg/open-codebase-index/index.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 | $0.00007 | $0.00251 |
| Opus 5.5 | $0.00003 | $0.00100 |
| Sonnet 5.5 | $0.00001 | $0.00050 |
| Haiku 4.5 | $0.00001 | $0.00025 |
Grade A, and why
index 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 1mo 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
Run the index_codebase tool with these settings:
User input: $ARGUMENTS
Parse the input and set tool arguments:
- force=true if input contains "force"
- estimateOnly=true if input contains "estimate"
- verbose=false (default, for token efficiency)
- verbose=true if input contains "verbose" (for detailed output)
Examples:
/index→ force=false, estimateOnly=false, verbose=false/index force→ force=true, estimateOnly=false, verbose=false/index estimate→ force=false, estimateOnly=true, verbose=false/index verbose→ force=false, estimateOnly=false, verbose=true
IMPORTANT: You MUST pass the parsed arguments to index_codebase. Do not ignore them.
Show final statistics including files processed, chunks indexed, tokens used, and duration.
If indexing completes but the codebase still is not ready, tell the user to run /status next.
- If
/statusreports failed embedding batches, fix the provider/auth issue and rerun/indexnormally. - Use
/index forceonly for a full rebuild or when/statusreports provider/model incompatibility.
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.
- 1mo ago First seen · 28 lines · 7 tokens per session scan A c1b1582ed5ca
index is a command published in the GitHub repository Helweg/open-codebase-index (224 stars, last pushed yesterday), licensed MIT. It adds 7 tokens to every session and 251 once invoked, about $0.0000 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 2026-08-30.
Other commands, from other repositories
codesage-reset
Fully regenerate a project's CodeSage index under its writer lock, with a separate offline recovery procedure for an unreadable database.
codesage-reindex
Refresh a project's index incrementally and report retained totals separately from work performed. Clean orphan model tables after successful indexing.
rtfm.ocr
Enable persistent OCR fallback for scanned PDFs and run the OCR pass in the background.
rtfm.status
Show full RTFM index status (with pending-sync counts and health signals).
codesage-prompt-override
Print a compatibility pointer to the canonical CodeSage retrieval skill.
rb-ask
A command for asking questions about the current codebase through RepoBrain, a code knowledge tool.