Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add jhlee0409/omni-harness-kit/plugin install harness-kitWrote 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/jhlee0409/omni-harness-kit/new-spec)<a href="https://agentmods.dev/skills/jhlee0409/omni-harness-kit/new-spec"><img src="https://agentmods.dev/badge/skills/jhlee0409/omni-harness-kit/new-spec/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/jhlee0409/omni-harness-kit/new-spec"><img src="https://agentmods.dev/badge/skills/jhlee0409/omni-harness-kit/new-spec.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 | $0.00082 | $0.00398 |
| Opus 5 | $0.00041 | $0.00199 |
| Sonnet 5 | $0.00016 | $0.00080 |
| Haiku 4.5 | $0.00008 | $0.00040 |
Grade A, and why
new-spec scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
new-spec
Structure non-trivial work before coding — the spec is what keeps the work grounded on the original ask (this is where reliability comes from, not from a measurement system).
- Decide if a spec is warranted. Yes if the task touches ≥2 modules / areas, needs ≥3 commits, introduces a new ADR, or is forward-only. Skip it for small work (single file, doc-only, a follow-up) — spec ceremony on tiny tasks is net-negative.
- Scaffold: run
bash "${CLAUDE_PLUGIN_ROOT}/skills/new-spec/new-spec.sh" "<name>"from the repo root. It createsspecs/<date>-<slug>/{spec,plan,context}.mdand prints the directory. - Fill, in order:
spec.md(the original ask verbatim + acceptance),plan.md(dependency-ordered tasks), then load the tasks and surface N/M as you work. A "done" tone before all plan tasks are consumed is not allowed. context.md## 0. Resume here— write it with/harness-kit:handoffat a stopping point; a fresh session resumes from it with/harness-kit:pickup.
What ships with it
1 file 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.
- 12d ago First seen · 31 lines · 82 tokens per session scan A 8ff3f4bb5885
new-spec is a skill published in the GitHub repository jhlee0409/omni-harness-kit (2 stars, last pushed 1mo ago), licensed MIT. It adds 82 tokens to every session and 398 once invoked, about $0.0004 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 2026-08-31.
Other skills, from other repositories
resolve-plugins
Curate Claude Code skill / MCP / hook picks against live upstream sources and pin them in .claude/settings.json. Adding a process harness (a paired skill set) is an ordinary pick this door handles. Reads stack from docs/techstack.md, workflow signal from docs/overview.md + existing pins, then live-queries six source…
journey-simulation
Use when caller wants to observe how a stranger encounters a flow, artifact, or sandbox — triggers like "simulate a user journey", "test our onboarding / checkout / signup", "will my ICP convert", "how does a cold reader experience this README", "first-time user test", "cognitive walkthrough", or any request to…
check-docs-consistency
Cross-reference project docs for drift, stale references, and contradictions. Outputs timestamped report. Discovers Markdown wherever it lives in the repo.
super-bootstrap
Public entry for the super-bootstrap pipeline — thin orchestrator. Git-inits if absent, then dispatches /super-bootstrap:harness-bootstrap to install or sync the generic runway (always; the runway self-detects fresh-vs-sync). Checks whether seed docs are substantive: greenfield seeds three GAP cards (overview…
release
Prepare a version release — bump version files, commit, and tag. Just run /release with no arguments.
merge
Absorb one or more feature branches into the base branch. Recommends merge vs rebase per branch. On conflict, aborts that branch + surfaces the file list + stops. Resolution out of scope; routes to the harness-named conflict-resolution agent or the user.