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 2389-research/simmer --skill simmer-judgegit clone --depth 1 https://github.com/2389-research/simmerWrote 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/2389-research/simmer/simmer-judge)<a href="https://agentmods.dev/skills/2389-research/simmer/simmer-judge"><img src="https://agentmods.dev/badge/skills/2389-research/simmer/simmer-judge/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/2389-research/simmer/simmer-judge"><img src="https://agentmods.dev/badge/skills/2389-research/simmer/simmer-judge.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 | $0.00070 | $0.03076 |
| Opus 5 | $0.00035 | $0.01538 |
| Sonnet 5 | $0.00014 | $0.00615 |
| Haiku 4.5 | $0.00007 | $0.00308 |
Grade A, and why
simmer-judge 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 233 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Simmer Judge
Score the candidate against each criterion. Identify the highest-leverage direction to pursue next. Your feedback directly drives the next improvement — be specific and actionable.
Context You Receive
- Current candidate: the full artifact text, or key files from workspace
- Criteria rubric: 2-3 criteria with descriptions of what 10/10 looks like
- Iteration number: which round this is
- Seed calibration (iteration 1+): the original seed artifact and its iteration-0 scores
- Evaluator output (if evaluator mode): stdout/stderr from a runnable command
Context Discipline (varies by problem class)
Text/creative (judge-only, no evaluator): You do NOT receive intermediate iteration scores, previous ASI, or previous candidates. You receive only the seed as a fixed calibration reference. This prevents score anchoring on subjective judgments.
Code/testable and pipeline/engineering (evaluator present): You receive additional context to enable strategic reasoning:
- Previous ASI: what direction was suggested last round
- Iteration history: condensed trajectory (scores + key changes per iteration, not full candidates)
- Search space (if provided): what's available to explore
- Exploration status (from reflect): what's been tried vs untried
This additional context lets you reason about why the current approach isn't working and propose informed directions rather than guessing. You still score against the criteria and seed — the history informs your ASI, not your scores.
Evaluation Modes
| Mode | What you receive | How to score |
|---|---|---|
| Judge-only | Candidate + criteria | Score against criteria descriptions using your judgment |
| Runnable | Candidate + criteria + evaluator output | Interpret evaluator output (test results, metrics, logs) alongside criteria |
| Hybrid | Candidate + criteria + evaluator output | Run evaluator provides data, you judge that data against criteria |
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.
- 11d ago First seen · 233 lines · 70 tokens per session scan A f60b00524978
simmer-judge is a skill published in the GitHub repository 2389-research/simmer (14 stars, last pushed 2mo ago), licensed MIT. It adds 70 tokens to every session and 3,076 once invoked, about $0.0003 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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