Borrowing it
Nothing to install: this file belongs to reflex-search/reflex. 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/reflex-search/reflex/main/CLAUDE.mdgit clone --depth 1 https://github.com/reflex-search/reflexWrote 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/instructions/reflex-search/reflex/claude-md)<a href="https://agentmods.dev/instructions/reflex-search/reflex/claude-md"><img src="https://agentmods.dev/badge/instructions/reflex-search/reflex/claude-md/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/instructions/reflex-search/reflex/claude-md"><img src="https://agentmods.dev/badge/instructions/reflex-search/reflex/claude-md.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 | $0.12149 | $0.12149 |
| Opus 5.5 | $0.04860 | $0.04860 |
| Sonnet 5.5 | $0.02430 | $0.02430 |
| Haiku 4.5 | $0.01215 | $0.01215 |
Grade A, and why
reflex CLAUDE.md 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 894 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Project Overview
Reflex is a local-first, full-text code search engine written in Rust. It's a fast, deterministic replacement for Sourcegraph Code Search, designed specifically for AI coding workflows and automation.
Reflex uses trigram-based indexing to enable instant full-text search across large codebases (10k+ files). Unlike symbol-only tools, Reflex finds every occurrence of patterns—function calls, variable usage, comments, and more—not just definitions. Results include file paths, line numbers, and surrounding context, with optional symbol-aware filtering.
Core Principles
- Local-first: Runs fully offline; all data stays on the developer's machine
- Complete coverage: Finds every occurrence, not just symbol definitions
- Deterministic results: Same query → same answer; no probabilistic ranking
- Instant access: Trigram index + memory-mapping enables instant queries
- Agent-oriented: Clean JSON output built for AI coding agents and automation
- Regex support: Extract trigrams from patterns for fast regex search
Architecture Overview
Components
| Module | Description |
|---|---|
| Trigram Indexer | Extracts trigrams from all code files; builds inverted index (trigram → file locations) |
| Content Store | Stores full file contents (memory-mapped); enables context extraction around matches |
| Query Engine | Intersects trigram posting lists; verifies matches; returns line-by-line results with context |
| Runtime Symbol Parser | Uses Tree-sitter to parse candidate files that miss the symbol cache, at query time |
| Background Symbol Indexer | rfx index-symbols-internal, spawned by rfx index; parses every file with a grammar and fills the symbol cache |
| Symbol Cache | zstd-compressed symbol blobs in meta.db (src/symbol_cache.rs); symbol queries read it first |
| CLI / API Layer | Single binary for human and programmatic use (CLI and optional HTTP/MCP) |
| Incremental updates | rfx index and Indexer::update_paths publish a delta over the base instead of rebuilding (src/snapshot.rs, src/indexer.rs) |
| Auto-update | Every command that reads the index updates a stale one first (src/auto_update.rs); --no-update opts out |
| Watcher (optional) | Incrementally updates index on file 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.
- yesterday Changed · +1 lines · +34 tokens per session b861eb4d565f
- 2d ago Changed · +1 lines · +47 tokens per session 39673280efa0
- 3d ago Changed · +8 lines · +253 tokens per session d11d888a88f3
- 26d ago Changed · +30 lines · +461 tokens per session 2a045aff75f3
- 28d ago Changed · +77 lines · +1,936 tokens per session dc800cdcaf08
- 29d ago Changed · -46 lines · -282 tokens per session 96c74b092b81
- 1mo ago Changed · +131 lines · +2,507 tokens per session 335a3cfe65fa
- 1mo ago Changed · +72 lines · +1,023 tokens per session 6233daa7b96a
- 1mo ago Changed · +6 lines · +151 tokens per session 4ef76faeb555
- 1mo ago First seen · 614 lines · 6,019 tokens per session scan A 4b394c66f4f5
reflex CLAUDE.md is an instructions file published in the GitHub repository reflex-search/reflex (76 stars, last pushed today), licensed MIT. It adds 12,149 tokens to every session, about $0.0486 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.
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