Chorus is a coordination harness for teams of coding agents and humans, combining agent orchestration, task tracking, permissions, observability, and recovery in one workflow. It is for collaborative software development where agents propose changes and people verify them before delivery, and the catalogue entries provide its skills, hooks, agents, commands, MCP integration, plugin, and configuration.
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 Chorus-AIDLC/Chorus --skill chorus-spec-litegit clone --depth 1 https://github.com/Chorus-AIDLC/ChorusWrote 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/chorus-aidlc/chorus/chorus-spec-lite)<a href="https://agentmods.dev/skills/chorus-aidlc/chorus/chorus-spec-lite"><img src="https://agentmods.dev/badge/skills/chorus-aidlc/chorus/chorus-spec-lite/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.
<a href="https://agentmods.dev/skills/chorus-aidlc/chorus/chorus-spec-lite"><img src="https://agentmods.dev/badge/skills/chorus-aidlc/chorus/chorus-spec-lite.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00158 | $0.02862 |
| Opus 5.5 | $0.00063 | $0.01145 |
| Sonnet 5.5 | $0.00032 | $0.00572 |
| Haiku 4.5 | $0.00016 | $0.00286 |
Grade A, and why
chorus-spec-lite 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 2d 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- 2d ago Changed · +39 lines 0a5c4677f657
- 9d ago Changed 1363c65fb928
- 15d ago Changed 056d07d3d4cc
- 17d ago Changed 6c9f6aed7d8f
- 20d ago Changed 8cedd909e23a
- 21d ago Changed 787a19b637f1
- 24d ago Changed 5546d8ff7072
- 26d ago Changed 12e187ccd77d
- 1mo ago Changed 5a5132e8d4d1
- 1mo ago First seen · 148 lines · 158 tokens per session scan A 3f5eb99c3595
chorus-spec-lite is a skill published in the GitHub repository Chorus-AIDLC/Chorus (1,210 stars, last pushed yesterday), licensed AGPL-3.0. It adds 158 tokens to every session and 2,862 once invoked, about $0.0006 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 2026-09-12.
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