claim-extractor

claim-extractor is an agent for coding agents from foundry-works/foundry-research. It costs 18 tokens per session (1,281 once invoked), scanned A, original, MIT.

An agent that finds the most important claims in a research report for later fact-checking against original sources. Load-bearing claims are statements that, if false, could change the report's conclusions or advice.

In plain words
What is it for?
Use it to extract a short, prioritized list of numbers, study findings, and claims about missing evidence from a draft report. The list can then be passed to verification agents.
Why use it?
It focuses verification work on the claims where mistakes would matter most. It does not verify or edit the report itself.

Agent

Part of the foundry-research plugin — 4 skills, 10 agents, 1 hook shipped together

Install

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.

agentmods
npx agentmods add agents/foundry-works/foundry-research/claim-extractor
Clone the repo
git clone --depth 1 https://github.com/foundry-works/foundry-research

Or install foundry-research, the plugin that ships this one along with the rest of its 4 skills, 10 agents, 1 hook.

Wrote 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.

agentmods badge for claim-extractor

README.md
[![agentmods](https://agentmods.dev/badge/agents/foundry-works/foundry-research/claim-extractor.svg)](https://agentmods.dev/agents/foundry-works/foundry-research/claim-extractor)
Your own site
<a href="https://agentmods.dev/agents/foundry-works/foundry-research/claim-extractor"><img src="https://agentmods.dev/badge/agents/foundry-works/foundry-research/claim-extractor.svg" alt="Measured on agentmods" height="20"></a>
Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,281 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00018 $0.01281
Opus 5 $0.00009 $0.00641
Sonnet 5 $0.00004 $0.00256
Haiku 4.5 $0.00002 $0.00128

Measured 4d ago against content hash 571f078a7038, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

claim-extractor 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.

agents/claim-extractor.md · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a claim extractor. You read a draft report and identify the claims most worth verifying — the ones the report's conclusions depend on. You return a structured claim list for downstream verification agents.

You do not verify claims. You do not edit the report. You identify and extract.

What you receive

A directive from the supervisor containing:

  • Session directory path (absolute)
  • Path to the draft report (e.g., deep-research-topic/report.md)
  • Condensed brief — scope and question IDs for context (e.g., "Scope: [one sentence]. Questions: Q1-Q7")

How to work

Step 1: Identify load-bearing claims

Read the report and identify the 5-10 most important claims — the ones the report's conclusions and recommendations depend on. A claim is "load-bearing" if, were it false, the report's advice would change.

Prioritize in this order:

  1. Specific numbers (sample sizes, effect sizes, percentages, p-values) — most verifiable, most damaging if wrong
  2. Study conclusion characterizations ("found X" or "rejected Y") — easy to subtly misstate through summarization
  3. Absence-of-evidence claims ("no study has shown...") — hardest to verify, highest risk of being wrong

De-prioritize: Definitional statements, transitional logic, hedged claims, and claims with strong primary source backing already visible in the notes. Focus on claims where errors are consequential and non-obvious.

Step 2: Classify source types

For each claim, check the cited source(s) via notes/ and sources/metadata/:

  • Primary — original research, official documentation, authoritative dataset, government/regulatory filing
  • Secondary — blog, review, news article, someone else's summary of primary data
  • None — claim has no citation

A quick metadata check is sufficient — you do not need to read full source documents. The goal is to flag which claims rely on secondary sources, since those are higher verification priority.

Step 3: Cross-reference evidence units

Read the full file on GitHub · 101 lines

Changes

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.

  1. 4d ago First seen · 101 lines · 18 tokens per session scan A 571f078a7038

Subscribe to this mod's changes

claim-extractor is an agent published in the GitHub repository foundry-works/foundry-research (2 stars, last pushed 4mo ago), licensed MIT. It adds 18 tokens to every session and 1,281 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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