Borrowing it
Nothing to install: this file belongs to sanchez314c/claude-lens. 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/sanchez314c/claude-lens/main/CLAUDE.mdgit clone --depth 1 https://github.com/sanchez314c/claude-lensWrote 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/sanchez314c/claude-lens/claude-md)<a href="https://agentmods.dev/instructions/sanchez314c/claude-lens/claude-md"><img src="https://agentmods.dev/badge/instructions/sanchez314c/claude-lens/claude-md.svg" alt="Measured on agentmods" 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 | $0.00274 | $0.00274 |
| Opus 5 | $0.00137 | $0.00137 |
| Sonnet 5 | $0.00055 | $0.00055 |
| Haiku 4.5 | $0.00027 | $0.00027 |
Grade A, and why
claude-lens 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 6d 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
claude-lens
MCP server giving Claude Code searchable memory across all past sessions.
Architecture
- SQLite + FTS5 for instant full-text search
- Indexes 12,000+ session JSONL files from ~/.claude/projects/
- Incremental indexing via file mtime tracking
- 9 search/query tools exposed via MCP stdio transport
Dev
- Plain JavaScript ESM (type: "module"), no TypeScript, no build step
- Dependencies: @modelcontextprotocol/sdk, better-sqlite3
- Tests:
npm test(node --test)
Key files
- src/index.js — MCP server entry point + startup indexing
- src/database.js — SQLite schema, FTS5, prepared statements, query methods
- src/indexer.js — JSONL parser, tool call extraction, incremental index
- src/tools.js — 9 MCP tool definitions with zod schemas
DB location
~/.claude-lens/claude-lens.db (WAL mode, better-sqlite3 synchronous)
Constraints
- No embeddings v1 (FTS5 handles 90% of queries)
- Tool output truncated to 500 chars
- Index on MCP server startup only
- Subagent sessions skipped
- Logs go to stderr (stdout reserved for MCP protocol)
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.
- 6d ago First seen · 31 lines · 274 tokens per session scan A ae60c91700e7
claude-lens CLAUDE.md is an instructions file published in the GitHub repository sanchez314c/claude-lens (0 stars, last pushed 15d ago), licensed MIT. It adds 274 tokens to every session, about $0.0014 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 2026-08-31.
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