Borrowing it
Nothing to install: this file belongs to skuznetsov/adamas-lang. 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/skuznetsov/adamas-lang/main/CLAUDE.mdgit clone --depth 1 https://github.com/skuznetsov/adamas-langWrote 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/skuznetsov/adamas-lang/claude-md)<a href="https://agentmods.dev/instructions/skuznetsov/adamas-lang/claude-md"><img src="https://agentmods.dev/badge/instructions/skuznetsov/adamas-lang/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/skuznetsov/adamas-lang/claude-md"><img src="https://agentmods.dev/badge/instructions/skuznetsov/adamas-lang/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 | $0.01030 | $0.01030 |
| Opus 5.5 | $0.00412 | $0.00412 |
| Sonnet 5.5 | $0.00206 | $0.00206 |
| Haiku 4.5 | $0.00103 | $0.00103 |
Grade A, and why
adamas-lang 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.
How it starts
The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Crystal V2 Compiler - Project Instructions
Language & documentation
- Repository (code comments, markdown docs, commit messages in this project): write in English.
- Chat with the project owner: prefer Russian unless they switch language.
Safe Testing Protocol
- ALWAYS run test binaries via
scripts/run_safe.sh <binary> <timeout> <max_mem_mb> - NEVER run test binaries directly — they can exhaust FDs/memory and freeze the machine
- Default:
scripts/run_safe.sh /tmp/test_hello 5 512(5s timeout, 512MB limit) - The script monitors FD count and RSS; kills process if FD > 1000 or memory > limit
Build & Run
crystal build src/adamas.cr -o bin/adamas --error-trace # build compiler
bin/adamas /tmp/test_hello.cr # compile test
scripts/run_safe.sh /tmp/test_hello 5 512 # run safely
- Debug crash:
lldb --batch -o 'run' -k 'bt 30' -k 'quit' /tmp/test_hello - Eager HIR (debug):
ADAMAS_EAGER_HIR=1 bin/adamas ...
Critical Rules
- NEVER modify stdlib files — must be 100% compatible with original Crystal stdlib at
../crystal/src - When in doubt, always check original Crystal compiler code at
../crystal/src - Original Crystal compiler:
../crystal/src/compiler/crystal/codegen/ - Prefer zero-copy memory patterns to reduce GC pressure, bound memory use, and speed up the compiler.
- Clean up temporary artifacts (
/tmp/,./tmp/,~/Projects/Crystal/.codex_artifacts/) when no longer needed; commit working features and fixes when ready. - When you find a bug, add a regression script to reproduce it — it pays off quickly.
- For fast debug iterations, prefer no-prelude oracles: easier to inspect
.ll,.hir, and.mir. - Keep TODO.md updated when shipping meaningful changes.
- Many bugs trace back to incorrect arena lifetime / tracking — verify arenas first.
Grok ACP Sidecar
- Use Grok via
~/.grok/binas a cheap read-only sidecar for non-trivial root-cause work. - Give Grok narrow bounded questions with exact files, logs, anchors, and required output shape; do not ask it to make edits.
- Treat Grok output as candidate evidence only. Verify locally before adopting any claim.
- Record useful and failed Grok interactions in
grok_acp_beta_report.mdso the beta-test signal survives context resets. - Prefer Grok for parallel audits such as "classify this missing-demand family", "find all call paths to this enqueue site", or "review this proposed root-cause hypothesis".
- Do not wait on Grok when the next local falsifier is obvious; continue local work and integrate Grok only if it returns actionable evidence.
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 · 57 lines · 1,030 tokens per session scan A 0376ee5073db
adamas-lang CLAUDE.md is an instructions file published in the GitHub repository skuznetsov/adamas-lang (55 stars, last pushed yesterday), licensed MIT. It adds 1,030 tokens to every session, about $0.0041 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 instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.