Octos is a self-hosted AI assistant that runs on a user's computer and can connect to different AI providers, execute code, browse the web, remember information, schedule jobs, and create documents through browser, terminal, and messaging interfaces. The catalogue entries extend or configure this assistant's workflows.
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 octos-org/octos --skill harness-starter-genericgit clone --depth 1 https://github.com/octos-org/octosWrote 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/octos-org/octos/harness-starter-generic)<a href="https://agentmods.dev/skills/octos-org/octos/harness-starter-generic"><img src="https://agentmods.dev/badge/skills/octos-org/octos/harness-starter-generic/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/octos-org/octos/harness-starter-generic"><img src="https://agentmods.dev/badge/skills/octos-org/octos/harness-starter-generic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00029 | $0.00298 |
| Opus 5 | $0.00015 | $0.00149 |
| Sonnet 5 | $0.00006 | $0.00060 |
| Haiku 4.5 | $0.00003 | $0.00030 |
Grade A, and why
harness-starter-generic 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 13d 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.
What it actually says
Harness Starter: Generic
The minimum legal shape of a harnessed custom app. Copy this crate when you
want to produce a single deliverable file under a declared primary
artifact and rely on the runtime to verify and deliver it.
What this starter proves
- A
[spawn_tasks.produce_artifact]block bound to[artifacts].primary. - A single
on_verifyfile-exists check. - A smoke test asserting manifest parses, workspace policy parses, the
artifact is produced, and the stable
lifecycle_statevalues areQueued -> Running -> Verifying -> Ready.
See docs/OCTOS_HARNESS_DEVELOPER_GUIDE.md for the full contract.
Tools
produce_artifact
Produce a single text artifact under output/.
{"label": "quarterly review"}
Parameters:
label(required): free-text label recorded inside the artifact and used to derive its filename.
Artifact:
- writes
output/artifact-<slug>.txt - the workspace policy's
primaryglob (output/artifact-*.txt) resolves to this path.
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 13d ago First seen · 43 lines · 29 tokens per session scan A 39634a2d4e95
harness-starter-generic is a skill published in the GitHub repository octos-org/octos (1,038 stars, last pushed yesterday), licensed Apache-2.0. It adds 29 tokens to every session and 298 once invoked, about $0.0001 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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