opencode-agent-skills AGENTS.md

opencode-agent-skills AGENTS.md is an instructions file for Codex, OpenCode from joshuadavidthomas/opencode-agent-skills. It costs 1,388 tokens per session, scanned A, original, MIT.

Project instructions for opencode-agent-skills, covering agent behavior, commands, code style, project structure, and issue tracking with beads, a task-management tool.

In plain words
What is it for?
Use them when changing this project, particularly for running Bun tests and builds, checking TypeScript, following its style rules, and managing issues with beads.
Why use it?
They help a coding agent follow the repository's preferred tools and conventions instead of applying unsuitable defaults.

Instructions file for CodexOpenCode

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/joshuadavidthomas/opencode-agent-skills/agents-md
Clone the repo
git clone --depth 1 https://github.com/joshuadavidthomas/opencode-agent-skills

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.

agentmods badge for opencode-agent-skills AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/joshuadavidthomas/opencode-agent-skills/agents-md.svg)](https://agentmods.dev/instructions/joshuadavidthomas/opencode-agent-skills/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/joshuadavidthomas/opencode-agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/joshuadavidthomas/opencode-agent-skills/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,388 This file is loaded in full into every session.
When invoked 1,388 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.01388 $0.01388
Opus 5 $0.00694 $0.00694
Sonnet 5 $0.00278 $0.00278
Haiku 4.5 $0.00139 $0.00139

Measured 4d ago against content hash 7758ad85a7ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

opencode-agent-skills 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.

AGENTS.md · 164 lines

How it starts

The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Guidelines

Commands

  • Package manager: Bun (not npm/yarn)
  • Test: bun test or just test
  • Single test: bun test path/to/file.test.ts or bun test --grep "pattern"
  • Typecheck: bun run typecheck (runs tsc --noEmit)
  • Build: just build

Code Style

  • TypeScript strict mode with noUncheckedIndexedAccess - always check array/object access
  • ES modules - use import/export, no CommonJS
  • Node imports - use node: prefix (e.g., import * as fs from "node:fs/promises")
  • Zod for runtime validation schemas
  • Naming: camelCase for functions/variables, PascalCase for types/interfaces
  • JSDoc comments (/** */) for public functions
  • Error handling: try/catch with graceful fallbacks; silent catches OK for optional operations
  • Async/await - prefer over raw promises
  • Path safety: validate user paths don't escape base directories using path.resolve

Project Structure

  • Single plugin file at src/plugin.ts
  • Plugin exports a single Plugin function that returns tools and event handlers

Issue Tracking with bd (beads)

IMPORTANT: This project uses bd (beads) for ALL issue tracking. Do NOT use markdown TODOs, task lists, or other tracking methods.

Why bd?

  • Dependency-aware: Track blockers and relationships between issues
  • Git-friendly: Auto-syncs to JSONL for version control
  • Agent-optimized: JSON output, ready work detection, discovered-from links
  • Prevents duplicate tracking systems and confusion

Quick Start

Check for ready work:

bd ready --json

Create new issues:

bd create "Issue title" -t bug|feature|task -p 0-4 --json
bd create "Issue title" -p 1 --deps discovered-from:bd-123 --json
bd create "Subtask" --parent <epic-id> --json  # Hierarchical subtask (gets ID like epic-id.1)

Claim and update:

bd update bd-42 --status in_progress --json
bd update bd-42 --priority 1 --json

Complete work:

bd close bd-42 --reason "Completed" --json

Read the full file on GitHub · 164 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.

  1. 4d ago First seen · 164 lines · 1,388 tokens per session scan A 7758ad85a7ad

Subscribe to this mod's changes

opencode-agent-skills AGENTS.md is an instructions file published in the GitHub repository joshuadavidthomas/opencode-agent-skills (271 stars, last pushed 9d ago), licensed MIT. It adds 1,388 tokens to every session, about $0.0069 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.

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