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 skills add davidtoby/agent-skills --skill opencodegit clone --depth 1 https://github.com/davidtoby/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/skills/davidtoby/agent-skills/opencode)<a href="https://agentmods.dev/skills/davidtoby/agent-skills/opencode"><img src="https://agentmods.dev/badge/skills/davidtoby/agent-skills/opencode.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 5.1 | $0.00015 | $0.01829 |
| Opus 5 | $0.00008 | $0.00915 |
| Sonnet 5 | $0.00003 | $0.00366 |
| Haiku 4.5 | $0.00002 | $0.00183 |
Grade A, and why
opencode 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 5d 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.
This is a copy
98% identical to opencode — 1 line differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OpenCode CLI
Use OpenCode as an autonomous coding worker orchestrated by Hermes terminal/process tools. OpenCode is a provider-agnostic, open-source AI coding agent with a TUI and CLI.
When to Use
- User explicitly asks to use OpenCode
- You want an external coding agent to implement/refactor/review code
- You need long-running coding sessions with progress checks
- You want parallel task execution in isolated workdirs/worktrees
Prerequisites
- OpenCode installed:
npm i -g opencode-ai@latestorbrew install anomalyco/tap/opencode - Auth configured:
opencode auth loginor set provider env vars (OPENROUTER_API_KEY, etc.) - Verify:
opencode auth listshould show at least one provider - Git repository for code tasks (recommended)
pty=truefor interactive TUI sessions
Binary Resolution (Important)
Shell environments may resolve different OpenCode binaries. If behavior differs between your terminal and Hermes, check:
terminal(command="which -a opencode")
terminal(command="opencode --version")
If needed, pin an explicit binary path:
terminal(command="$HOME/.opencode/bin/opencode run '...'", workdir="~/project", pty=true)
One-Shot Tasks
Use opencode run for bounded, non-interactive tasks:
terminal(command="opencode run 'Add retry logic to API calls and update tests'", workdir="~/project")
Attach context files with -f:
terminal(command="opencode run 'Review this config for security issues' -f config.yaml -f .env.example", workdir="~/project")
Show model thinking with --thinking:
terminal(command="opencode run 'Debug why tests fail in CI' --thinking", workdir="~/project")
Force a specific model:
terminal(command="opencode run 'Refactor auth module' --model openrouter/anthropic/claude-sonnet-4", workdir="~/project")
Interactive Sessions (Background)
For iterative work requiring multiple exchanges, start the TUI in background:
terminal(command="opencode", workdir="~/project", background=true, pty=true)
# Returns session_id
# Send a prompt
process(action="submit", session_id="<id>", data="Implement OAuth refresh flow and add tests")
# Monitor progress
process(action="poll", session_id="<id>")
process(action="log", session_id="<id>")
# Send follow-up input
process(action="submit", session_id="<id>", data="Now add error handling for token expiry")
# Exit cleanly — Ctrl+C
process(action="write", session_id="<id>", data="\x03")
# Or just kill the process
process(action="kill", session_id="<id>")
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.
- 5d ago First seen · 219 lines · 15 tokens per session scan A 27f87a8e1d59
opencode is a skill published in the GitHub repository davidtoby/agent-skills (10 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 1,829 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to opencode, differing in 1 line, and is treated as a copy.
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Format commit messages using the Conventional Commits specification. Use when creating commits, writing commit messages, or when the user mentions commits, git commits, or commit messages. Ensures commits follow the standard format for automated tooling, changelog generation, and semantic versioning.
app-store-changelog
Create user-facing App Store release notes by collecting and summarizing all user-impacting changes since the last git tag (or a specified ref). Use when asked to generate a comprehensive release changelog, App Store "What's New" text, or release notes based on git history or tags.
codex-review
Professional code review with auto CHANGELOG generation, integrated with Codex AI.
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devops-pipeline
Configure pre-commit hooks and lean GitHub Actions for shift-left quality assurance. Use when adding or auditing CI/CD to maximize local test coverage and minimize CI cost. Skip for Terraform/K8s, deployment pipelines, or non-GitHub CI providers.
auto-push
Generate a commit message, stage all changes, and push to remote after scanning for secrets, large files, and protected-branch risks. Skip for opening PRs, code review, or cutting releases/tags.