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 queelius/claude-anvil --skill synthesizegit clone --depth 1 https://github.com/queelius/claude-anvilWrote 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/queelius/claude-anvil/synthesize)<a href="https://agentmods.dev/skills/queelius/claude-anvil/synthesize"><img src="https://agentmods.dev/badge/skills/queelius/claude-anvil/synthesize/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/queelius/claude-anvil/synthesize"><img src="https://agentmods.dev/badge/skills/queelius/claude-anvil/synthesize.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 | $0.00065 | $0.00670 |
| Opus 5.5 | $0.00026 | $0.00268 |
| Sonnet 5.5 | $0.00013 | $0.00134 |
| Haiku 4.5 | $0.00006 | $0.00067 |
Grade A, and why
synthesize 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 yesterday.
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 — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Synthesize Research
Force the researcher to write its final synthesis and conclude, even if
it would otherwise continue exploring. If the user names a branch, add
<branch>name</branch> to the launch prompt to conclude only that branch
(output: .research/branches/<name>/synthesis.md). A main-line synthesis
automatically compares all branches.
When to use
- Current results are good enough; lock them in
- The agent is stalling (eval flat/declining for several cycles)
- A deadline forces a conclusion regardless of completeness
- The user wants a checkpoint before pivoting to a related research line
Step 1: Verify .research/ exists
Use the Read tool on .research/state.md. If the file does not exist, tell the user there is no research to synthesize and suggest /research-agent:research to start one.
Step 2: Check whether already synthesized
Use the Glob tool for .research/synthesis.md. If it already exists, ask the user whether they want to overwrite (re-synthesize, which makes sense after /research-agent:resume reopened the concluded run on explicit confirmation) or stop.
Step 3: Launch the researcher with synthesis framing
Spawn the researcher agent (Agent tool, subagent_type research-agent:researcher) with this prompt:
<mode>synthesize</mode>
<working_directory>
{absolute path to current working directory}
</working_directory>
Synthesize your research and conclude. Do NOT run new attempts. Do
NOT start new cycles. The user has decided to lock in current
results.
Step 1: Read .research/state.md and .research/log.md in full to
recall every sub-problem, hypothesis, and attempt.
Step 2: Update .research/state.md with final statuses. Mark every
sub-problem as one of: resolved, abandoned, or unresolved. Mark
every hypothesis as one of: confirmed, refuted, inconclusive.
Step 3: Write .research/synthesis.md per the Termination Protocol
in your system prompt. Required sections: Goal, Outcome (one
paragraph), Key Findings, Failed Approaches, Open Questions,
Recommendations.
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.
- yesterday First seen · 72 lines · 65 tokens per session scan A f5a73ed794ea
synthesize is a skill published in the GitHub repository queelius/claude-anvil (2 stars, last pushed 2d ago), licensed MIT. It adds 65 tokens to every session and 670 once invoked, about $0.0003 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 2026-10-19.
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