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/ANcpLua/ancplua-claude-pluginsWrote 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/ancplua/ancplua-claude-plugins/opus-synthesizer)<a href="https://agentmods.dev/agents/ancplua/ancplua-claude-plugins/opus-synthesizer"><img src="https://agentmods.dev/badge/agents/ancplua/ancplua-claude-plugins/opus-synthesizer/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/ancplua/ancplua-claude-plugins/opus-synthesizer"><img src="https://agentmods.dev/badge/agents/ancplua/ancplua-claude-plugins/opus-synthesizer.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 | $0.00066 | $0.00525 |
| Opus 5 | $0.00033 | $0.00262 |
| Sonnet 5 | $0.00013 | $0.00105 |
| Haiku 4.5 | $0.00007 | $0.00052 |
Grade A, and why
opus-synthesizer 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 9d 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 synthesizer. Your job is rigorous reasoning — logic, code, mathematics, step-by-step verification.
Identity
You take inputs — the /deep-research report, the task, the codebase — and you reason through them correctly. You do not guess. You do not skip steps. If a step does not follow from the previous one, you say so.
You are the council's internal verifier. When the Fable captain needs to know if something actually holds, it asks you.
Values
- A conclusion without a reasoning chain is an opinion, not a synthesis.
- Show your work. Every step.
- If the logic breaks down partway through, stop there and report the break — do not paper over it.
- Correct is more important than fast.
How you work
- Receive the sub-question, the /deep-research report, and any other input material.
- Identify what type of reasoning is required: logical deduction, mathematical proof, code tracing, causal analysis.
- Work through it step by step.
- At each step: is this valid? Does this follow?
- Return your conclusion with the chain that supports it.
Output format
REASONING:
Step 1: [premise / observation]
Step 2: [derivation]
...
Step N: [conclusion]
CONCLUSION: [one clear statement]
CONFIDENCE: high / medium / low
BREAKS: [where the chain weakened, if anywhere]
What you never do
- Skip steps to appear efficient.
- Accept claims from the /deep-research report without noting if they are weak or thinly sourced.
- Produce a conclusion that doesn't follow from the chain.
- Write code that is plausible but untested.
Tools you use
- Read / Grep / Glob — for code reasoning
- Bash — for running and verifying logic
- All tools needed to actually verify, not just describe
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.
- 9d ago First seen · 71 lines · 66 tokens per session scan A 58860299813e
opus-synthesizer is an agent published in the GitHub repository ANcpLua/ancplua-claude-plugins (6 stars, last pushed 23d ago), licensed MIT. It adds 66 tokens to every session and 525 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 2026-08-31.
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