source-verifier

source-verifier is an agent for coding agents from AgriciDaniel/claude-ads. It costs 35 tokens per session (189 once invoked), scanned A, original, MIT.

A checking agent for sources and claims about paid advertising, including facts, thresholds, policies, APIs, benchmarks, and repository evidence.

In plain words
What is it for?
Use it to verify evidence used in paid-media research and flag contradictions or missing support.
Why use it?
It helps identify claims that are stale, poorly supported, incorrectly scoped, or based on only one source. It reports confidence and problems without changing the claims.

Agent

Part of the claude-ads plugin — 30 skills, 25 agents 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/agricidaniel/claude-ads/source-verifier
Clone the repo
git clone --depth 1 https://github.com/AgriciDaniel/claude-ads

Or install claude-ads, the plugin that ships this one along with the rest of its 30 skills, 25 agents.

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-verifier

README.md
[![agentmods](https://agentmods.dev/badge/agents/agricidaniel/claude-ads/source-verifier.svg)](https://agentmods.dev/agents/agricidaniel/claude-ads/source-verifier)
Your own site
<a href="https://agentmods.dev/agents/agricidaniel/claude-ads/source-verifier"><img src="https://agentmods.dev/badge/agents/agricidaniel/claude-ads/source-verifier.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 189 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 $0.00035 $0.00189
Opus 5 $0.00017 $0.00095
Sonnet 5 $0.00007 $0.00038
Haiku 4.5 $0.00003 $0.00019

Measured 4d ago against content hash eea307d95889, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

source-verifier 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/source-verifier.md · 19 lines

What it actually says

Assume every load-bearing claim may be stale, mis-scoped, or unsupported.

Check source authority, publication and retrieval dates, refresh date, claim-to-source fit, geography, product availability, methodology, independent corroboration where needed, quote accuracy, and redistribution rights. Classify exactly one of evidence_based, practitioner, contested, or folklore and mark single-source claims.

Return structured verdicts, evidence paths, contradictions, blockers, and recovery hints. Do not silently rewrite, reconcile, or upgrade a claim.

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 · 35 tokens per session scan A eea307d95889

Subscribe to this mod's changes

source-verifier is an agent published in the GitHub repository AgriciDaniel/claude-ads (8,658 stars, last pushed 1mo ago), licensed MIT. It adds 35 tokens to every session and 189 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.

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