Borrowing it
Nothing to install: this file belongs to silo-code/silo. 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/silo-code/silo/main/CLAUDE.mdgit clone --depth 1 https://github.com/silo-code/siloWrote 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/silo-code/silo/claude-md)<a href="https://agentmods.dev/instructions/silo-code/silo/claude-md"><img src="https://agentmods.dev/badge/instructions/silo-code/silo/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/silo-code/silo/claude-md"><img src="https://agentmods.dev/badge/instructions/silo-code/silo/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 | $0.00401 | $0.00401 |
| Opus 5.5 | $0.00160 | $0.00160 |
| Sonnet 5.5 | $0.00080 | $0.00080 |
| Haiku 4.5 | $0.00040 | $0.00040 |
Grade A, and why
silo 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 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
@AGENTS.md
Claude Code
- The workflows referenced above under
.agents/skills/*/SKILL.md(silo-testing,silo-docs-sync,silo-domain-modeling) are registered Claude Code skills — invoke them via the Skill tool rather than reading them manually; Claude Code also surfaces them proactively when a task matches their description. Claude Code only discovers skills under.claude/skills/, not the canonical.agents/skills/(the Codex-native,agentskills.io-spec-aligned location) — each skill's real content lives in.agents/skills/<name>/, and.claude/skills/<name>is a symlink to it, so both tools read the same file with nothing to keep in sync. silo-domain-modelingis a repo-local fork of the personaldomain-modelingskill, adapted to this repo's actual doc layout and format (docs/domain-language.md,docs/decisions/,docs/proposals/), rather than that skill's genericCONTEXT.md/docs/adr/defaults.- Other externally-installed skills:
improve-codebase-architectureandgrill-with-docs(frommattpocock/skills) still hardcodeCONTEXT.mdanddocs/adr/in their own instructions and have no concept ofdocs/proposals/(RFCs). When running them: treatdocs/adr/asdocs/decisions/(read/write there, continuing the existing numbering — never create a separatedocs/adr/directory), andCONTEXT.mdasdocs/domain-language.md. Don't expect either skill to read or writedocs/proposals/.
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 · 26 lines · 401 tokens per session scan A 3bff791bd059
silo CLAUDE.md is an instructions file published in the GitHub repository silo-code/silo (62 stars, last pushed today), licensed MIT. It adds 401 tokens to every session, about $0.0016 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).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.