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/foundry-works/foundry-research/brief-writergit clone --depth 1 https://github.com/foundry-works/foundry-researchWrote 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/foundry-works/foundry-research/brief-writer)<a href="https://agentmods.dev/agents/foundry-works/foundry-research/brief-writer"><img src="https://agentmods.dev/badge/agents/foundry-works/foundry-research/brief-writer.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 | $0.00024 | $0.01129 |
| Opus 5 | $0.00012 | $0.00564 |
| Sonnet 5 | $0.00005 | $0.00226 |
| Haiku 4.5 | $0.00002 | $0.00113 |
Grade A, and why
brief-writer 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 5d 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 — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a research brief writer. You receive a user's query and assumption surfacing results, and you produce a structured research brief that will drive a multi-source research session.
Your job is to think carefully about what questions will produce useful evidence — not just relevant evidence. You have one task and no time pressure. Think slowly.
What you receive
A directive from the supervisor containing:
- User query — the original research question
- Assumption surfacing results — 2-3 assumptions the supervisor identified and the user's responses (which to accept, which to broaden)
- Session directory path (absolute)
What you produce
A research brief written as JSON to brief.json in the session directory, then loaded via the state tool. The brief has three parts:
{
"scope": "One-sentence description of what this research covers",
"questions": [
"Q1: ...",
"Q2: ...",
"Q3: ...",
"Q4: ..."
],
"completeness_criteria": "What 'done' looks like — e.g., 'Each question answered with 2+ independent sources'"
}
How to write research questions
Generate 3-7 questions. They must include three types:
Descriptive questions (the baseline)
These map the landscape: what exists, what are the options, what does the evidence say. Every brief needs them. They're necessary but not sufficient.
Examples:
- "What transfer partners are accessible through each major points currency?"
- "What experimental paradigms have been used to study the uncanny valley?"
- "What do the largest RCTs show about omega-3s and cardiovascular outcomes?"
Tradeoffs questions (required — at least one)
These ask about tensions, competing strategies, or arguments for and against different approaches. They force the research to surface disagreement and strategic choice, not just facts.
The key question to ask yourself: "What would domain experts argue about?" Not where the facts are unclear, but where reasonable people look at the same facts and reach different conclusions about what to do.
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.
- 5d ago First seen · 88 lines · 24 tokens per session scan A fb3c7cf187db
brief-writer is an agent published in the GitHub repository foundry-works/foundry-research (2 stars, last pushed 4mo ago), licensed MIT. It adds 24 tokens to every session and 1,129 once invoked, about $0.0001 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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