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.
npx agentmods add instructions/joshuadavidthomas/opencode-agent-skills/agents-mdgit clone --depth 1 https://github.com/joshuadavidthomas/opencode-agent-skillsWrote 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/joshuadavidthomas/opencode-agent-skills/agents-md)<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>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 | $0.01388 | $0.01388 |
| Opus 5 | $0.00694 | $0.00694 |
| Sonnet 5 | $0.00278 | $0.00278 |
| Haiku 4.5 | $0.00139 | $0.00139 |
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.
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 testorjust test - Single test:
bun test path/to/file.test.tsorbun test --grep "pattern" - Typecheck:
bun run typecheck(runstsc --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
Pluginfunction 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
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 First seen · 164 lines · 1,388 tokens per session scan A 7758ad85a7ad
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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