Borrowing it
Nothing to install: this file belongs to holgerleichsenring/agent-smith. 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/holgerleichsenring/agent-smith/main/CLAUDE.mdgit clone --depth 1 https://github.com/holgerleichsenring/agent-smithWrote 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/holgerleichsenring/agent-smith/claude-md)<a href="https://agentmods.dev/instructions/holgerleichsenring/agent-smith/claude-md"><img src="https://agentmods.dev/badge/instructions/holgerleichsenring/agent-smith/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/holgerleichsenring/agent-smith/claude-md"><img src="https://agentmods.dev/badge/instructions/holgerleichsenring/agent-smith/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 | $0.03923 | $0.03923 |
| Opus 5.5 | $0.01569 | $0.01569 |
| Sonnet 5.5 | $0.00785 | $0.00785 |
| Haiku 4.5 | $0.00392 | $0.00392 |
Grade A, and why
agent-smith 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 9d 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 — 225 lines — stays where its author put it; the contents beside it link to each section on GitHub.
agent-smith — AI Agent Instructions
Context Files (read in this order)
- Every
.agentsmith/contexts/<name>/context.yaml(globcontexts/*/context.yaml) — architecture, stack, integrations, spec status PER stack - Every
.agentsmith/contexts/<name>/principles.md— code quality rules per stack (ALWAYS follow) .agentsmith/specs/active/*.yaml— the spec being implemented (itsapplies_to:names the dominant context).agentsmith/decisions/*.yaml— past decisions, one YAML per spec or run (read the active spec's file and itsrequires:chain).agentsmith/memory/MEMORY.md— the experiential-memory index, one line per recorded fact; recall detail from.agentsmith/memory/<name>.mdon demand when a line touches your task
Spec Directory Structure
.agentsmith/specs/
done/ # completed specs (historical reference)
active/ # spec currently being worked on
planned/ # upcoming specs with requirements
Experiential Memory (remember / recall)
.agentsmith/memory/ holds typed Markdown facts: one file per memory with
frontmatter name (slug = filename), description (one line), and
metadata.type (feedback = how the operator wants the agent to work,
ratification required; project = goals/constraints/state not derivable from
code or git; reference = external pointers). MEMORY.md is the index —
one line per memory, content never in the index.
- Recall before re-deriving: when the index hints at a fact you are about to work out from scratch, read the entry file instead.
- Remember sparingly: store what code and git cannot already tell the
next agent — one fact per file; check the index for an existing entry and
update rather than duplicate; delete a memory that turns out wrong; link
related memories as
[[slug]](a cited slug requires its committed definition). A new or changedfeedbackentry is a PROPOSAL until the operator ratifies it. - Memory vs decision: a decision records a CHOICE (
decisions/); a memory records a transferable FACT or RULE. Never duplicate one into the other.
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.
- 9d ago Changed · -5 lines · -137 tokens per session fbed4217d2ab
- 10d ago Changed · +6 lines · +164 tokens per session 1f813c6b0720
- 13d ago Changed · +24 lines · +461 tokens per session 50aad8d19002
- 15d ago Changed · +9 tokens per session f64ddc9b533b
- 1mo ago Changed · +20 lines · +396 tokens per session c020624de5bf
- 1mo ago Changed · +11 lines · +203 tokens per session 472f2db0b250
- 1mo ago Changed · +21 lines · +354 tokens per session c187d3fb0355
- 1mo ago Changed · +5 lines · +171 tokens per session e1c528a86e14
- 1mo ago Changed · -5 tokens per session abb383ac23d7
- 1mo ago First seen · 143 lines · 2,307 tokens per session scan A 8ae4727a9279
agent-smith CLAUDE.md is an instructions file published in the GitHub repository holgerleichsenring/agent-smith (30 stars, last pushed 4d ago), licensed MIT. It adds 3,923 tokens to every session, about $0.0157 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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