What is opencode-synced AGENTS.md?

A set of project instructions for contributors, covering how to build, test, lint, format, and structure code. It also defines commit and pull-request naming rules.

Use it as a reference when making changes, running checks, preparing commits, or opening pull requests in the project.

It gives developers one place to find the project's expected commands and coding conventions, reducing avoidable review and build errors.

How iHildy/opencode-synced configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to iHildy/opencode-synced. 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/iHildy/opencode-synced/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/iHildy/opencode-synced

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/ihildy/opencode-synced/agents-md/github.svg)](https://agentmods.dev/instructions/ihildy/opencode-synced/agents-md)

Your own site

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

Per session 758 This file is loaded in full into every session.

When invoked 758 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	$0.00758	$0.00758
Opus 5.5	$0.00303	$0.00303
Sonnet 5.5	$0.00152	$0.00152
Haiku 4.5	$0.00076	$0.00076

Measured 2mo ago against content hash e1707a1993ae, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

opencode-synced 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 · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Build & Test Commands

Build: mise run build or bun build ./src/index.ts --outdir dist --target bun
Test: mise run test or bun test
Single Test: bun test BackgroundTask.test.ts (use file glob pattern)
Watch Mode: bun test --watch
Lint: mise run lint or bun run lint (biome)
Fix Lint: mise run lint:fix or bun run lint:fix (biome --write)
Format: mise run format or bun run format (biome format --write)
Check (Lint + Format): bun run check (biome check --write)

PR & Commit Guidelines

Conventional Commits: Use conventional commit messages (e.g., fix:, feat:, chore:, docs:, refactor:, test:, revert:).
PR Titles: PR titles MUST follow conventional commit format (e.g., fix: descriptive title). This is enforced by GitHub checks.
Workflow: Run bun run check and bun run test before creating a PR.

Code Style Guidelines

Imports & Module System

Use ES6 import/export syntax (module: "ESNext", type: "module")
Group imports: external libraries first, then internal modules
Use explicit file extensions (.js) for internal imports

Formatting (Biome)

Single quotes (quoteStyle: 'single')
Line width: 100 characters
Tab width: 2 spaces (indentStyle: 'space')
Trailing commas: ES5 (no trailing commas in function parameters)
Semicolons: enabled

TypeScript & Naming

NeverNesters: avoid deeply nested structures. Always exit early.
Strict mode: enforced ("strict": true)
Classes: PascalCase (e.g., BackgroundTask, BackgroundTaskManager)
Methods/properties: camelCase
Status strings: use union types (e.g., 'pending' | 'running' | 'completed' | 'failed' | 'cancelled')
Explicit types: prefer explicit type annotations over inference
Return types: optional (not required but recommended for public methods)

Error Handling

Check error type before accessing error properties: error instanceof Error ? error.toString() : String(error)
Log errors with [ERROR] prefix for consistency
Always provide error context when recording output

Read the full file on GitHub · 73 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 · 73 lines · 758 tokens per session scan A e1707a1993ae

Subscribe to this mod's changes

opencode-synced AGENTS.md is an instructions file published in the GitHub repository iHildy/opencode-synced (168 stars, last pushed 1mo ago), licensed MIT. It adds 758 tokens to every session, about $0.0030 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.

opencode-synced AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
opencode-synced AGENTS.mdiHildy/opencode-synced	Instructions file	168	1mo ago	MIT	A	758	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

opencode-synced: Instructions file for Codex