What is servo-fetch AGENTS.md?

Repository instructions for servo-fetch, a Rust workspace that fetches, renders, and extracts content from websites. It includes a library, a command-line and HTTP tool, an MCP server for connecting the tool to agents, and Python and TypeScript bindings.

Use them when changing web fetching, crawling, sitemap discovery, the command-line tool, the HTTP or MCP interface, or language bindings.

They explain the project parts, supported language versions, and unusually long build times before changes are made or tests are run.

How konippi/servo-fetch configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to konippi/servo-fetch. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/konippi/servo-fetch/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/konippi/servo-fetch

Made for: Codex, OpenCode.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/konippi/servo-fetch/agents-md/github.svg)](https://agentmods.dev/instructions/konippi/servo-fetch/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/konippi/servo-fetch/agents-md"><img src="https://agentmods.dev/badge/instructions/konippi/servo-fetch/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/konippi/servo-fetch/agents-md"><img src="https://agentmods.dev/badge/instructions/konippi/servo-fetch/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,928 This file is loaded in full into every session.

When invoked 1,928 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.01928	$0.01928
Opus 5.5	$0.00771	$0.00771
Sonnet 5.5	$0.00386	$0.00386
Haiku 4.5	$0.00193	$0.00193

Measured 2mo ago against content hash 94ccbfb8477b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

servo-fetch 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 2mo 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.

AGENTS.md · 126 lines

How it starts

The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Instructions for AI coding agents working on servo-fetch. This file complements, not replaces, CONTRIBUTING.md (human-oriented) and skills/servo-fetch/SKILL.md (consumer-oriented). Treat this file as living documentation; update it when conventions change.

Project overview

servo-fetch is a Rust workspace with two crates:

servo-fetch (library): wraps the Servo browser engine to fetch, render, and extract web content. Main entry points: fetch(), crawl() / crawl_each() (streaming), map() (sitemap discovery).
servo-fetch-cli (binary): CLI + HTTP API + MCP server. Depends on servo-fetch.

Language bindings live outside the cargo workspace in bindings/python/ (PyO3/maturin) and bindings/node/ (TypeScript wrapper over the CLI; bindings/node is excluded from the workspace).

Toolchain pinned in rust-toolchain.toml; MSRV declared as rust-version in Cargo.toml — do not use features stabilized after the MSRV. Workspace-wide version bumping via [workspace.package].version.

The Servo dependency dominates build time (several minutes on first build, ~30-40 minutes for release). Plan long-running commands accordingly.

Setup and commands

Run these from the workspace root unless noted. Copy-paste ready:

cargo build                                             # Debug build
cargo build --release                                   # Release build (slow)
cargo +nightly fmt --all                                # Format
cargo +nightly fmt --all -- --check                     # CI fmt check
cargo clippy --workspace --all-targets -- -D warnings   # Lint (pedantic, warnings are errors)
cargo test --workspace                                  # Unit + integration tests (fast)
cargo test -- --ignored                                 # Include Servo-backed e2e tests (slow)
cargo deny check                                        # License + advisory audit
taplo check                                             # TOML lint (install: cargo install taplo-cli --locked)
taplo fmt                                               # TOML format
typos                                                   # Spell check

Read the full file on GitHub · 126 lines

Changes

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.

2mo ago First seen · 126 lines · 1,928 tokens per session scan A 94ccbfb8477b

Subscribe to this mod's changes

servo-fetch AGENTS.md is an instructions file published in the GitHub repository konippi/servo-fetch (163 stars, last pushed 2d ago), licensed Apache-2.0. It adds 1,928 tokens to every session, about $0.0077 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.

Languages Rust cli fetch mcp servo web-scraping

servo-fetch AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
servo-fetch AGENTS.mdkonippi/servo-fetch	Instructions file	163	2d ago	Apache-2.0	A	1,928	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

servo-fetch: Instructions file for Codex