Borrowing it
Nothing to install: this file belongs to realactivity/tula. 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/realactivity/tula/main/CLAUDE.mdgit clone --depth 1 https://github.com/realactivity/tulaWrote 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/realactivity/tula/claude-md)<a href="https://agentmods.dev/instructions/realactivity/tula/claude-md"><img src="https://agentmods.dev/badge/instructions/realactivity/tula/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/realactivity/tula/claude-md"><img src="https://agentmods.dev/badge/instructions/realactivity/tula/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 | $0.00245 | $0.00245 |
| Opus 5.5 | $0.00098 | $0.00098 |
| Sonnet 5.5 | $0.00049 | $0.00049 |
| Haiku 4.5 | $0.00024 | $0.00024 |
Grade A, and why
tula 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
CLAUDE.md - Claude Code notes
Read AGENTS.md first. It is the canonical repo guide for all
coding agents (orientation, hard rules, verification, contribution paths).
This file adds Claude Code-specific notes only.
Claude Code
- Prefer the repo verification commands in
AGENTS.mdbefore reporting done. - On Windows dev machines, run bash scripts via Git Bash when PowerShell lacks
bash/jq:"C:\Program Files\Git\bin\bash.exe" -lc "cd /path/to/tula && ..." - Live Waza runs need Copilot CLI auth; mock CI does not.
- Do not commit unless the user asks. When committing, always
git commit -s.
Quick links
- Skill authoring:
skills/AGENTS.md - Eval build spec:
docs/build-spec-patient-agent-eval-standard-v0.1.md - Runtime workspace (VM, not this repo):
docs/agent/AGENTS.md
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 · 21 lines · 245 tokens per session scan A 207035227a3c
tula CLAUDE.md is an instructions file published in the GitHub repository realactivity/tula (47 stars, last pushed 20d ago), licensed Apache-2.0. It adds 245 tokens to every session, about $0.0010 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.
tula CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| tula CLAUDE.mdrealactivity/tula | Instructions file | 47 | 20d ago | Apache-2.0 | A | 245 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |