Borrowing it
Nothing to install: this file belongs to hahwul/gori. 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/hahwul/gori/main/AGENTS.mdgit clone --depth 1 https://github.com/hahwul/goriWrote 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/hahwul/gori/agents-md)<a href="https://agentmods.dev/instructions/hahwul/gori/agents-md"><img src="https://agentmods.dev/badge/instructions/hahwul/gori/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/hahwul/gori/agents-md"><img src="https://agentmods.dev/badge/instructions/hahwul/gori/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 | $0.06552 | $0.06552 |
| Opus 5.5 | $0.02621 | $0.02621 |
| Sonnet 5.5 | $0.01310 | $0.01310 |
| Haiku 4.5 | $0.00655 | $0.00655 |
Grade A, and why
gori 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 4d 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 — 353 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md: working on gori
gori is an intercepting proxy and workbench for authorized security testing, written in Crystal and shipped as one binary. It sits in the loop between a client and its target, capturing every request and response as a flow you can intercept, replay, fuzz, and scan across HTTP/1.1, HTTP/2, WebSocket, gRPC, and SSE.
Three entry points, one engine layer underneath: gori (TUI), gori mcp (stdio JSON-RPC for
agents), gori run <sub> (headless, for scripts).
This file is the short version, and it is the whole contract for a change that stays inside
one subsystem. DESIGN.md is the long one, and its numbering is
load-bearing: source comments cite principles as (P4), (P6/P7) and sections as
DESIGN.md §4.
- Changing behavior? Read Invariants below first — those three are what changes get wrong.
- Adding or moving a TUI key or space-menu row? TUI keys lists the rules the boot checks and guard specs hold you to.
- Committing? House rules has the commit, CHANGELOG and pre-commit checklist.
- Adding a subsystem? DESIGN.md, then back here.
Invariants: three things not to get wrong
1. Malformed input is the payload (P7)
A security proxy that sanitizes its operator's bytes is broken. The captured wire bytes are canonical; parsed columns and pretty views are derived projections.
- There is no stdlib
HTTP::Requestparsing anywhere on the proxy path.src/gori/proxy/codec/http1.cris a byte-exact sans-IO codec: it flagsmalformed?and keeps the octets rather than rejecting.serialize_headis the identity function. - The axis is provenance, not byte values. The same octet gets three different answers:
- operator bytes (imported HAR, an MCP
rawrequest, a replay) go out verbatim, never sanitized. See the comment atsrc/gori/import/builder.cr:105-112andsrc/gori/repeater/url_request.cr(raw/normalize_raw, shared by MCPsend_requestandgori run send). - page-authored bytes (a crawled
<a href>) get percent-encoded where they merely break, and refused where they frame. Seesrc/gori/discover/url.cr(encode_unsafe). - remote-chosen bytes (a redirect
Location) are refused outright, not repaired. Seesrc/gori/fuzz/engine.cr(redirect following).
- operator bytes (imported HAR, an MCP
- The predicate has one home:
Codec::Http1.request_token_safe?. Do not re-derive it next to a new caller; that exact shape has already recurred three times (#390, #394, #397). - Request framing rejects any obfuscation (
obfuscated_header?); response framing is deliberately narrower (framing_ambiguous?, and read the comment above it). Do not "symmetrize" them: a request's peer is the operator's own browser, a response's peer is the whole internet.
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.
- 4d ago Changed 3a4112ea4156
- 7d ago Changed · +2 lines · +35 tokens per session 7b5b617a4a74
- 8d ago Changed · +1 lines · +42 tokens per session 2de22a88689a
- 14d ago Changed · +3 tokens per session 625c91e6dcbb
- 15d ago Changed · +3 tokens per session cd0192f84e61
- 17d ago Changed · +7 lines · +177 tokens per session 7ed91dac9155
- 19d ago Changed e57aeb0a397d
- 21d ago Changed · +6 lines · +100 tokens per session bfde7a79f6c6
- 24d ago Changed · +2 lines · +49 tokens per session 9c5cf76e49d2
- 26d ago First seen · 335 lines · 6,143 tokens per session scan A 26c0d2c31e69
gori AGENTS.md is an instructions file published in the GitHub repository hahwul/gori (128 stars, last pushed yesterday), licensed Apache-2.0. It adds 6,552 tokens to every session, about $0.0262 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
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
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.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.