Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/datadog/pup/claude-mdgit clone --depth 1 https://github.com/DataDog/pupWhat 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 | $0.01837 | $0.01837 |
| Opus 5 | $0.00919 | $0.00919 |
| Sonnet 5 | $0.00367 | $0.00367 |
| Haiku 4.5 | $0.00184 | $0.00184 |
Grade A, and why
pup 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 2d 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 — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Pup - Datadog API CLI
Rust-based CLI wrapper for Datadog APIs. Provides OAuth2 + API key authentication across a wide range of Datadog product domains.
Documentation Index
- ALIASES.md - Alias management (storage, commands, expansion)
- COMMANDS.md - Complete command reference
- CONTRIBUTING.md - Git workflow, PR process, commit format
- TESTING.md - Test strategy, coverage requirements, CI/CD
- REVIEW.md - Code review guidelines (read before submitting PRs)
- OAUTH2.md - OAuth2 implementation details (DCR, PKCE, token storage)
- EXAMPLES.md - Usage examples and common workflows
- ARCHITECTURE.md - Design decisions and technical details
- TROUBLESHOOTING.md - Common issues and debugging
Review Guidelines
All PRs are reviewed against docs/REVIEW.md. Read it before submitting. Key rules:
- Reuse existing code. Search
src/util.rs,src/formatter.rs,src/client.rs, andsrc/config.rsbefore writing new helpers. Do not duplicate functionality that already exists. - Test both paths. Every change must include positive tests (happy path) and negative tests (error cases, bad input, edge cases).
- No malicious code. Obfuscated logic, backdoors, exfiltration, or unauthorized network calls result in rejection and a ban.
- No vulnerable dependencies. Only use latest stable crate versions with no known CVEs. Run
cargo auditbefore submitting. - Keep it simple. Small functions, shallow nesting, no premature abstractions. Prefer explicit over clever.
- Follow Rust standards.
cargo fmt,cargo clippy -- -D warnings,anyhowfor errors, idiomaticOption/Resultusage. - Minimal diffs. One concern per PR. Don't touch unrelated code, reformat untouched files, or add unnecessary improvements.
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.
- 2d ago First seen · 219 lines · 1,837 tokens per session scan A 5f8bf3bc242f
pup CLAUDE.md is an instructions file published in the GitHub repository DataDog/pup (999 stars, last pushed 5d ago), licensed Apache-2.0. It adds 1,837 tokens to every session, about $0.0092 per session on Opus 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
opensre AGENTS.md
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opensre CLAUDE.md
Claude Code instructions for Tracer-Cloud/opensre, a project described as: Build your own AI SRE agents. The open source toolkit for the AI era.
CPA-Manager-Plus AGENTS.md
AGENTS.md instructions for seakee/CPA-Manager-Plus, covering repository rules, operation, layout, commands and architecture.
evlog AGENTS.md
AGENTS.md instructions for HugoRCD/evlog, covering evlog, commands, monorepo structure, conventions and code style: no slop.
agent-inspect AGENTS.md
Instructions for rajudandigam/agent-inspect, covering agentinspect ai maintainer instructions, product boundary, source of truth, public-copy rule and start every task.
openstatus AGENTS.md
AGENTS.md instructions for openstatusHQ/openstatus, covering agents.md, verify your change, toolchain, architecture and tests.