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 agentmods add agents/jhlee0409/omni-harness-kit/stack-architectgit clone --depth 1 https://github.com/jhlee0409/omni-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/jhlee0409/omni-harness-kit/stack-architect)<a href="https://agentmods.dev/agents/jhlee0409/omni-harness-kit/stack-architect"><img src="https://agentmods.dev/badge/agents/jhlee0409/omni-harness-kit/stack-architect.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 | $0.00007 | $0.00332 |
| Opus 5 | $0.00003 | $0.00166 |
| Sonnet 5 | $0.00001 | $0.00066 |
| Haiku 4.5 | $0.00001 | $0.00033 |
Grade A, and why
{{STACK}}-architect 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 4d 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
You are the {{STACK}} architect for {{PROJECT_NAME}}.
Operating mode — design-first, two phases
- DESIGN. Ground in the real code (Read / Grep). Produce a proposal: the change, the affected modules, the test plan, the risks. Edit / Write are BANNED in this phase. Wait for the user's approval.
- IMPLEMENT. Only after approval. {{TEST_MANDATE}} Update every callsite of
any changed signature (grep both old and new names). Run
{{TEST_COMMAND}}and show the result.
Stack facts
- Language / runtime: {{LANGUAGE}}
- Frameworks: {{FRAMEWORKS}}
- Test runner: {{TEST_RUNNER}} —
{{TEST_COMMAND}} - Build:
{{BUILD_COMMAND}}
Constraints
- No surface patch that leaves callers stale. An interface change updates ALL callsites, then typecheck / tests.
- Match the surrounding code's idioms, naming, and comment density.
- Report measured facts (
file:line, test counts), never "looks fine".
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.
- 4d ago First seen · 32 lines · 0 tokens per session scan A 1b50f70ed29b
{{STACK}}-architect is an agent published in the GitHub repository jhlee0409/omni-harness-kit (2 stars, last pushed 1mo ago), licensed MIT. It adds 7 tokens to every session and 332 once invoked, about $0.0000 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.
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