Borrowing it
Nothing to install: this file belongs to gregario/lego-oracle. 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/gregario/lego-oracle/main/CLAUDE.mdgit clone --depth 1 https://github.com/gregario/lego-oracleWrote 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/gregario/lego-oracle/claude-md)<a href="https://agentmods.dev/instructions/gregario/lego-oracle/claude-md"><img src="https://agentmods.dev/badge/instructions/gregario/lego-oracle/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/gregario/lego-oracle/claude-md"><img src="https://agentmods.dev/badge/instructions/gregario/lego-oracle/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 | $0.00382 | $0.00382 |
| Opus 5.5 | $0.00153 | $0.00153 |
| Sonnet 5.5 | $0.00076 | $0.00076 |
| Haiku 4.5 | $0.00038 | $0.00038 |
Grade A, and why
lego-oracle 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 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.
What it actually says
lego-oracle
MCP server for LEGO data: sets, parts, colours, inventories, minifigures, themes, MOCs, part relationships.
Stack Profiles
- MCP stack profile:
../../stacks/mcp/ - TypeScript stack profile:
../../stacks/typescript/
Read both stack profiles before writing any code.
Architecture
- Embedded data: Rebrickable CSVs ingested into SQLite at build time
- Does NOT fetch at runtime: all data bundled in the npm package
- Updates: Daily GitHub Actions sync fetches fresh CSVs, rebuilds, auto-publishes if changed
- Storage: SQLite with FTS5 for search
Build behavior
npm run build auto-runs npm run fetch-data if src/data/lego.sqlite is missing. This means a clean clone (e.g. Glama's auto-rebuild container) can run npm install && npm run build and produce a working package without manual steps. The cached SQLite in src/data/ (gitignored, ~109 MB) is reused on subsequent builds — no redundant fetches.
The SQLite is not tracked in git. Rebrickable's terms forbid automated download by individual end-users ("Under no circumstances are you allowed to use automation tools to download data..."), so we cannot ship a runtime-fetch model. The current pattern — single CI machine fetches once daily, redistributes via npm — is the compliant architecture.
Data Source
Data from Rebrickable (rebrickable.com). "You can use these files for any purpose." LEGO is a trademark of the LEGO Group. Not produced by or endorsed by the LEGO Group.
Engineering
Uses Superpowers for engineering execution. Follow TDD workflow: write tests first, then implement.
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 · 33 lines · 382 tokens per session scan A 09a078c234d3
lego-oracle CLAUDE.md is an instructions file published in the GitHub repository gregario/lego-oracle (4 stars, last pushed 3mo ago), licensed MIT. It adds 382 tokens to every session, about $0.0015 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 2026-08-31.
lego-oracle CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| lego-oracle CLAUDE.mdgregario/lego-oracle | Instructions file | 4 | 3mo ago | MIT | A | 382 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,685 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,086 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 281k | today | MIT | A | 4,335 | Codex, OpenCode |