Borrowing it
Nothing to install: this file belongs to haoxiang-xu/PuPu. 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/haoxiang-xu/PuPu/main/AGENTS.mdgit clone --depth 1 https://github.com/haoxiang-xu/PuPuWrote 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/haoxiang-xu/pupu/agents-md)<a href="https://agentmods.dev/instructions/haoxiang-xu/pupu/agents-md"><img src="https://agentmods.dev/badge/instructions/haoxiang-xu/pupu/agents-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/haoxiang-xu/pupu/agents-md"><img src="https://agentmods.dev/badge/instructions/haoxiang-xu/pupu/agents-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 | $0.01942 | $0.01942 |
| Opus 5.5 | $0.00777 | $0.00777 |
| Sonnet 5.5 | $0.00388 | $0.00388 |
| Haiku 4.5 | $0.00194 | $0.00194 |
Grade A, and why
PuPu AGENTS.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 28d 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 — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GitNexus — Code Intelligence
This project is indexed by GitNexus as PuPu (41812 symbols, 140105 relationships, 1104 execution flows).
Index stale? Run
node .gitnexus/run.cjs analyze --index-onlyfrom the project root — it auto-selects an available runner. No.gitnexus/run.cjsyet? Bootstrap withnpx,bunx, orpnpm dlx— e.g.bunx gitnexus@latest analyze(npm 11 npx crash; #1939).
Always Do
- MUST run impact before editing. Use
impact({target: "symbolName", direction: "upstream"})ornode .gitnexus/run.cjs impact "symbolName" --direction upstream --repo .; report callers, processes, and risk. Never substitute grep for graph analysis. - MUST analyze graph changes before committing. Use
detect_changes({scope: "all"})(MCP) ornode .gitnexus/run.cjs detect-changes --scope all --repo .(CLI fallback).partial: trueortruncated: trueis not a clean check — a zero means unseen, not unaffected; re-run it. For regression review:detect_changes({scope: "compare", base_ref: "main"})ornode .gitnexus/run.cjs detect-changes --scope compare --base-ref "main" --repo .. - MUST warn on HIGH/CRITICAL
riskpre-edit; never useriskSharedAxesto waive a HIGH/CRITICALriskwarning. Compare File/symbol: MCP File omits axes; Graph-RAG expands File. - MUST treat
risk: UNKNOWNas unresolved, not as low. An empty caller set is not evidence the symbol is unused — it can also mean the callers are not resolvable by the index (plain-object property access, dynamic dispatch, cross-language calls).impactpairsUNKNOWNwith ariskNotesaying so. Confirm with a text search before treating the symbol as safe to change or delete; do not proceed on the strength of a zero. - MUST use
query({search_query: "concept"})for concepts/flows,context({name: "symbolName"})for a named symbol, orimpactfor blast radius, on read-only callers, dependencies, imports, or execution flow. Graph first; text search only for empty/UNKNOWN/literals. - For security review,
explain({target: "fileOrSymbol"})lists taint findings (source→sink flows; needsanalyze --pdg).
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.
- 28d ago Changed · -1 lines · +22 tokens per session e0abf7a0fc3b
- 1mo ago Changed · +3 lines · +74 tokens per session 0bd9aa21a384
- 1mo ago First seen · 79 lines · 1,846 tokens per session scan A 2a68037772d0
PuPu AGENTS.md is an instructions file published in the GitHub repository haoxiang-xu/PuPu (36 stars, last pushed 3d ago), licensed Apache-2.0. It adds 1,942 tokens to every session, about $0.0078 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
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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.
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vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.