Borrowing it
Nothing to install: this file belongs to mr-daedalium/ostack-saas. 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/mr-daedalium/ostack-saas/main/CLAUDE.mdgit clone --depth 1 https://github.com/mr-daedalium/ostack-saasWrote 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/mr-daedalium/ostack-saas/claude-md)<a href="https://agentmods.dev/instructions/mr-daedalium/ostack-saas/claude-md"><img src="https://agentmods.dev/badge/instructions/mr-daedalium/ostack-saas/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/mr-daedalium/ostack-saas/claude-md"><img src="https://agentmods.dev/badge/instructions/mr-daedalium/ostack-saas/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 | $0.03755 | $0.03755 |
| Opus 5 | $0.01878 | $0.01878 |
| Sonnet 5 | $0.00751 | $0.00751 |
| Haiku 4.5 | $0.00376 | $0.00376 |
Grade B, and why
ostack-saas CLAUDE.md scanned grade B with 1 finding 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.
Enumerates other installed skillsmediumAgent snooping
Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.
**Check once per session:** Run `ls -la .claude/skills/ostack` to see if it's a How it starts
The opening of the file, as written. The whole thing — 287 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ostack development
Commands
bun install # install dependencies
bun test # run free tests (browse + snapshot + skill validation)
bun run test:evals # run paid evals: LLM judge + E2E (diff-based, ~$4/run max)
bun run test:evals:all # run ALL paid evals regardless of diff
bun run test:e2e # run E2E tests only (diff-based, ~$3.85/run max)
bun run test:e2e:all # run ALL E2E tests regardless of diff
bun run eval:select # show which tests would run based on current diff
bun run dev <cmd> # run CLI in dev mode, e.g. bun run dev goto https://example.com
bun run build # gen docs + compile binaries
bun run gen:skill-docs # regenerate SKILL.md files from templates
bun run skill:check # health dashboard for all skills
bun run dev:skill # watch mode: auto-regen + validate on change
bun run eval:list # list all eval runs from ~/.ostack-dev/evals/
bun run eval:compare # compare two eval runs (auto-picks most recent)
bun run eval:summary # aggregate stats across all eval runs
test:evals requires ANTHROPIC_API_KEY. Codex E2E tests (test/codex-e2e.test.ts)
use Codex's own auth from ~/.codex/ config — no OPENAI_API_KEY env var needed.
E2E tests stream progress in real-time (tool-by-tool via --output-format stream-json --verbose). Results are persisted to ~/.ostack-dev/evals/ with auto-comparison
against the previous run.
Diff-based test selection: test:evals and test:e2e auto-select tests based
on git diff against the base branch. Each test declares its file dependencies in
test/helpers/touchfiles.ts. Changes to global touchfiles (session-runner, eval-store,
llm-judge, gen-skill-docs) trigger all tests. Use EVALS_ALL=1 or the :all script
variants to force all tests. Run eval:select to preview which tests would run.
Testing
bun run test:fast # quick local checks before every commit
bun test # full free suite before shipping
bun run test:evals # paid, diff-based (~$4/run max)
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 First seen · 287 lines · 3,755 tokens per session scan B 9bf46f345208
ostack-saas CLAUDE.md is an instructions file published in the GitHub repository mr-daedalium/ostack-saas (110 stars, last pushed 5mo ago), licensed MIT. It adds 3,755 tokens to every session, about $0.0188 per session on Opus 5. A static security scan graded it B with 1 finding (enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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