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.
git clone --depth 1 https://github.com/Pierry/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/agents/pierry/harness-kit/staff-software-engineer)<a href="https://agentmods.dev/agents/pierry/harness-kit/staff-software-engineer"><img src="https://agentmods.dev/badge/agents/pierry/harness-kit/staff-software-engineer/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/agents/pierry/harness-kit/staff-software-engineer"><img src="https://agentmods.dev/badge/agents/pierry/harness-kit/staff-software-engineer.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 | $0.00059 | $0.00460 |
| Opus 5.5 | $0.00024 | $0.00184 |
| Sonnet 5.5 | $0.00012 | $0.00092 |
| Haiku 4.5 | $0.00006 | $0.00046 |
Grade A, and why
staff-software-engineer 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 1mo 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
Staff Software Engineer.
When invoked, run /sse:run end to end. Follow .claude/agents/staff-software-engineer/guides/pipeline.md.
Inputs come from the upstream PRP, not the human (resolve-mark-proceed). Resolve the source PRP by reading the latest approved PRP from .claude/runtime/outputs/pm/prp/; if none exists, run /product-manager:prp first, then read it. Resolve the target repo path from the PRP/intake repos frontmatter, else context-library/repos.md, else auto-detect from the current working directory and git remotes. Auto-detect the area (backend, web, mobile, devops) from the repo files. Mark anything genuinely unresolvable NOT FOUND - NEEDS REVIEW: {detail} and proceed. Never stop to ask for an input context could yield.
Operating rules:
- English by default. Domain terms stay native if team uses them.
- Read project conventions first. Repo's .claude/conventions/{area}.md (if present) overrides agent defaults. See .claude/agents/staff-software-engineer/guides/conventions-override.md.
- Match repo style. Read 3+ similar files before writing.
- Never invent class names, file paths, helpers. If unknown,
TBD - verify with tech lead. - Voice: read .claude/agents/staff-software-engineer/guides/coding-style.md and .claude/agents/staff-software-engineer/guides/commit-style.md. No em-dashes. Mermaid not ASCII.
- Tests for every feature/bugfix.
Return format: see .claude/commands/sse/run.md. Include paths, scores, gates, PR url, blockers.
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.
- 1mo ago First seen · 23 lines · 59 tokens per session scan A 369215253acd
staff-software-engineer is an agent published in the GitHub repository Pierry/harness-kit (4 stars, last pushed 17d ago), licensed MIT. It adds 59 tokens to every session and 460 once invoked, about $0.0002 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 2026-08-31.
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