Veritas Acta Verify

An audit tool that adds an Ed25519 digital receipt to every Claude Code tool call. The receipts can be checked offline to confirm what Claude did and when.

In plain words
What is it for?
Use it when you need to audit Claude Code actions, verify their timing, or keep independently checkable records of tool calls.
Why use it?
It provides a local record for reviewing tool activity without relying on a server or trusting an external log.

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/veritasacta/verify/claude-code-plugin
Any agent
npx skills add VeritasActa/verify --skill claude-code-plugin
Clone the repo
git clone --depth 1 https://github.com/VeritasActa/verify

Made for: Claude Code, Codex.

Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 297 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00037 $0.00297
Opus 5 $0.00018 $0.00148
Sonnet 5 $0.00007 $0.00059
Haiku 4.5 $0.00004 $0.00030

Measured 2d ago against content hash e764e1c6655c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Veritas Acta Verify 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 2d 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.

ecosystem/claude-code-plugin/SKILL.md · 46 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 46 lines · 37 tokens per session scan A e764e1c6655c

Subscribe to this mod's changes

Veritas Acta Verify is a skill published in the GitHub repository VeritasActa/verify (5 stars, last pushed 3mo ago), with no licence file. It adds 37 tokens to every session and 297 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 2026-08-31.

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