Borrowing it
Nothing to install: this file belongs to gosuda/portal-tunnel. 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/gosuda/portal-tunnel/main/AGENTS.mdgit clone --depth 1 https://github.com/gosuda/portal-tunnelWrote 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/gosuda/portal-tunnel/agents-md)<a href="https://agentmods.dev/instructions/gosuda/portal-tunnel/agents-md"><img src="https://agentmods.dev/badge/instructions/gosuda/portal-tunnel/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/gosuda/portal-tunnel/agents-md"><img src="https://agentmods.dev/badge/instructions/gosuda/portal-tunnel/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 | $0.00381 | $0.00381 |
| Opus 5 | $0.00191 | $0.00191 |
| Sonnet 5 | $0.00076 | $0.00076 |
| Haiku 4.5 | $0.00038 | $0.00038 |
Grade A, and why
portal-tunnel 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 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.
What it actually says
AGENTS.md
Keep this file short and behavioral.
Architecture, product behavior, and design rationale belong in docs/architecture.md and docs/adr/README.md.
Development Principles
- Minimizing concepts, duplication, and ceremony.
- Prefer a single stable contract with one real owner.
- Prefer local simplicity over premature or speculative abstraction.
- Add indirection only when it removes real coupling or protects a real boundary.
- Tests should protect real stable contracts and invariants, not drive the spec or exist only for regression prevention.
Project Principles
- When caller and callee are both local and no real boundary exists, change both directly; do not preserve local call shapes.
- If a field, method, wrapper, or abstraction has no clear, current use and does not protect a real boundary, remove it immediately.
- No wrapper functions or helpers unless they remove real coupling or protect a real boundary.
- Prefer direct code over layers, facades, and indirection.
- Prefer flattening and merging nearby responsibilities over splitting by default.
- Remove dead fields, methods, config, and stale state while touching nearby code.
- Do not duplicate normalization, validation, or defaulting logic; keep it in a single real owner.
- Keep shared stateless transforms in
utils/; keep stateful and domain-shaped logic with the real owner. - Keep stable shared contracts, constants, and public paths in
types/, not in runtime or helpers. - Resolve complexity in the lowest coherent owner and expose only the minimum surface upward.
- Shared runtime logic must live in one real owner and be reused, not mirrored.
Verification
- CI commands:
make vet,make lint,make test. make tidyis local maintenance, not a CI requirement.- Run tests only when explicitly requested.
- If verification seems necessary, ask before running it.
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 · 34 lines · 381 tokens per session scan A 5d5e7ff3825f
portal-tunnel AGENTS.md is an instructions file published in the GitHub repository gosuda/portal-tunnel (267 stars, last pushed today), licensed MIT. It adds 381 tokens to every session, about $0.0019 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
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langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.