source-evaluation

source-evaluation is a skill for Claude Code, Codex from aiming-lab/MetaClaw. It costs 33 tokens per session (179 once invoked), scanned A, original, MIT.

A checklist for judging information from outside sources. It covers freshness, relevance, authoritativeness, accuracy, and purpose.

In plain words
What is it for?
Use it when citing research, answering factual questions, or comparing sources before relying on their claims.
Why use it?
It helps prevent decisions based on outdated, weak, promotional, or unsupported information.

Skill for Claude CodeCodex

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 skills/aiming-lab/metaclaw/source-evaluation
Any agent
npx skills add aiming-lab/MetaClaw --skill source-evaluation
Clone the repo
git clone --depth 1 https://github.com/aiming-lab/MetaClaw

Made for: Claude Code, Codex.

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 source-evaluation

README.md
[![agentmods](https://agentmods.dev/badge/skills/aiming-lab/metaclaw/source-evaluation.svg)](https://agentmods.dev/skills/aiming-lab/metaclaw/source-evaluation)
Your own site
<a href="https://agentmods.dev/skills/aiming-lab/metaclaw/source-evaluation"><img src="https://agentmods.dev/badge/skills/aiming-lab/metaclaw/source-evaluation.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 179 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 $0.00033 $0.00179
Opus 5 $0.00016 $0.00089
Sonnet 5 $0.00007 $0.00036
Haiku 4.5 $0.00003 $0.00018

Measured 4d ago against content hash f33bca8eefb5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

source-evaluation 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.

memory_data/skills/source-evaluation/SKILL.md · 19 lines

What it actually says

Source Evaluation

CRAAP criteria (quick version):

  • Currency: Is the source recent enough for this topic? (Technology: < 2 years; science: check if superseded)
  • Relevance: Does it directly address the question?
  • Authority: Is the author or organization credible in this domain?
  • Accuracy: Is it peer-reviewed, cited, or verifiable from other sources?
  • Purpose: Is it informational vs. promotional vs. opinion?

Red flags: anonymous authorship, no citations, sensational language, single-source claims.

Best practice: triangulate important facts across 2–3 independent sources before asserting them.

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 · 19 lines · 33 tokens per session scan A f33bca8eefb5

Subscribe to this mod's changes

source-evaluation is a skill published in the GitHub repository aiming-lab/MetaClaw (3,494 stars, last pushed 2mo ago), licensed MIT. It adds 33 tokens to every session and 179 once invoked, about $0.0002 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 2026-08-30.