sources

sources is a skill for Claude Code from synthetic-sciences/openscience. It costs 97 tokens per session (1,068 once invoked), scanned A, original, Apache-2.0.

A claim-by-claim source audit for drafts, reports, answers, and summaries. It traces each statement to the exact supporting passage, table, dataset field, or recorded computation and labels how well it is supported.

In plain words
What is it for?
Use it to fact-check text, verify quantitative statements, and build a table showing supported, partly supported, unsupported, or contradicted claims.
Why use it?
It catches paraphrases that overstate a source, numbers with the wrong units, and claims attributed to the wrong paper. It checks the wording of the claim instead of accepting a general citation.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to fact-check text, verify quantitative statements, and build a table showing supported, partly supported, unsupported, or contradicted claims.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/synthetic-sciences/openscience/sources
About the project

synthetic-sciences/openscience is an AI workbench that carries out scientific research by reading papers, forming hypotheses, writing and running code, conducting experiments, analyzing results, and preparing reports. Researchers use it for work in machine learning, biology, physics, and chemistry with remote or local models. Catalogue add-ons extend its scientific workflows through skills and instructions.

synthetic-sciences/openscience · 4,025 stars · on GitHub · openscience.sh

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.

Any agent
npx skills add synthetic-sciences/openscience --skill sources
Clone the repo
git clone --depth 1 https://github.com/synthetic-sciences/openscience

Made for: Claude Code.

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 sources

README.md
[![agentmods](https://agentmods.dev/badge/skills/synthetic-sciences/openscience/sources/github.svg)](https://agentmods.dev/skills/synthetic-sciences/openscience/sources)
Your own site
<a href="https://agentmods.dev/skills/synthetic-sciences/openscience/sources"><img src="https://agentmods.dev/badge/skills/synthetic-sciences/openscience/sources/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.

agentmods 80×15 button for sources

Your own site · 80×15
<a href="https://agentmods.dev/skills/synthetic-sciences/openscience/sources"><img src="https://agentmods.dev/badge/skills/synthetic-sciences/openscience/sources.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,068 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00097 $0.01068
Opus 5.5 $0.00039 $0.00427
Sonnet 5.5 $0.00019 $0.00214
Haiku 4.5 $0.00010 $0.00107

Measured 1mo ago against content hash 7524c8bcd1c8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sources 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 1mo 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.

backend/cli/skills/core/sources/SKILL.md · 88 lines

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.

Sources audit

A sources audit answers one question for every claim: where exactly does this come from, and does that place say this? It is the check that catches confident paraphrase drifting from what the source said, numbers copied with the wrong units, and results attributed to the wrong paper. The deliverable is a table, not a reassurance.

Rules

  1. Atomize. Split the text into claims small enough to be true or false on their own. "X improves accuracy by 4% on Y and generalizes to Z" is two claims.
  2. Locate, then read. For each claim, find the exact supporting passage: a sentence, a table cell, a figure panel, a dataset field, a tracked run's metric. Read it in its context; a sentence taken from a limitations paragraph often says the opposite of the claim built on it.
  3. Grade against the wording. Supported: the source says this, in this scope. Partially supported: the source says something narrower, weaker or conditional. Unsupported: no source found, or the source does not address it. Contradicted: the source says otherwise. Recall is never a source.
  4. Numbers are exact. Value, units, precision, uncertainty and conditions must match. A rounded or unit-converted number is partially supported unless the text says it converted.
  5. Attribution is part of the claim. A correct fact attributed to the wrong paper is contradicted, not supported.
  6. Report, do not repair. The audit lists what it found; changing the text is a separate step the user asks for (paper-writing).

Workflow

  • Collect the claims (numbered) and the sources the text cites or relies on.
  • For each claim, locate and read the supporting passage; fetch sources not at hand.
  • Grade each claim; record the passage and location.
  • Summarize: counts by grade, the claims that matter most, what to fix first.

Locating. Cited papers: fetch by DOI or arXiv id (requests in skills/core/citations/references/apis.md) and read the relevant section. Project results: open the output file or query the tracked run (experiments compare, experiments series). Datasets: the field and record. Web sources: the page as of today, with its date.

Read the full file on GitHub · 88 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. 1mo ago Changed · +6 lines 7524c8bcd1c8
  2. 1mo ago First seen · 82 lines · 97 tokens per session scan A 130b09a89114

Subscribe to this mod's changes

sources is a skill published in the GitHub repository synthetic-sciences/openscience (4,025 stars, last pushed today), licensed Apache-2.0. It adds 97 tokens to every session and 1,068 once invoked, about $0.0004 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 2026-09-14.