context-verifier

context-verifier is a skill for Claude Code, Codex from live-neon/skills. It costs 22 tokens per session (3,149 once invoked), scanned A, original, MIT.

A local verification tool for checking file integrity with SHA-256 hashes and creating context packets. A hash is a fingerprint used to detect file changes.

In plain words
What is it for?
Use it to hash or verify user-specified files and create records under the workspace's context-packet directory.
Why use it?
It helps confirm that the file being edited is the intended, unchanged file and records verification details locally.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

Good fit Use it to hash or verify user-specified files and create records under the workspace's context-packet directory.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/live-neon/skills/context-verifier
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 live-neon/skills --skill context-verifier
Clone the repo
git clone --depth 1 https://github.com/live-neon/skills

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 context-verifier

README.md
[![agentmods](https://agentmods.dev/badge/skills/live-neon/skills/context-verifier.svg)](https://agentmods.dev/skills/live-neon/skills/context-verifier)
Your own site
<a href="https://agentmods.dev/skills/live-neon/skills/context-verifier"><img src="https://agentmods.dev/badge/skills/live-neon/skills/context-verifier.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,149 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 $0.00022 $0.03149
Opus 5 $0.00011 $0.01574
Sonnet 5 $0.00004 $0.00630
Haiku 4.5 $0.00002 $0.00315

Measured 7d ago against content hash 98816235ee60, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

context-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 7d 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.

agentic/context-verifier/SKILL.md · 422 lines

How it starts

The opening of the file, as written. The whole thing — 422 lines — stays where its author put it; the contents beside it link to each section on GitHub.

context-verifier (検証)

Unified skill for file hash computation, integrity verification, severity tagging, and context packet creation. Consolidates 3 granular skills into a single verification system.

Trigger: 明示呼出 (explicit invocation)

Source skills: context-packet, file-verifier, severity-tagger

Installation

openclaw install leegitw/context-verifier

Dependencies: None (foundational skill)

Standalone usage: This skill is fully functional standalone. It provides file integrity verification that other skills in the suite depend on. Install this first when adopting the Neon Agentic Suite.

Data handling: This skill performs local-only operations. Hash computation uses standard SHA256 algorithms locally — no file contents are sent to any model, API, or external service. Results are written to output/context-packets/ in your workspace. The skill reads config from .openclaw/context-verifier.yaml or .claude/context-verifier.yaml only.

File access scope: This skill reads user-specified files for hash computation. The metadata declares config and output paths only — the skill will read ANY file path you provide to /cv hash, /cv verify, or /cv packet. Use caution with sensitive files.

What This Solves

AI agents sometimes operate on stale data — editing a file that changed since it was read, or trusting cached content that's now outdated. This skill prevents that by:

  1. Computing hashes of files before and after operations
  2. Detecting changes between read and write
  3. Generating context packets with verifiable checksums for review workflows

The insight: Trust but verify. The file you read might not be the file you're about to edit. Check first.

Usage

/cv <sub-command> [arguments]

Sub-Commands

Command CJK Logic Trigger
/cv hash 哈希 file→SHA256(content) Explicit
/cv verify 検証 file×hash→match✓∨mismatch✗ Explicit
/cv tag 標記 file→severity∈{critical,important,minor} Explicit
/cv packet 包装 files[]→{path,hash,severity,timestamp}[] Explicit

Read the full file on GitHub · 422 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. 7d ago First seen · 422 lines · 22 tokens per session scan A 98816235ee60

Subscribe to this mod's changes

context-verifier is a skill published in the GitHub repository live-neon/skills (2 stars, last pushed 3mo ago), licensed MIT. It adds 22 tokens to every session and 3,149 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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