artifact-flow-validation

artifact-flow-validation is a skill for Claude Code, Codex from paruff/uFawkesAI. It costs 33 tokens per session (476 once invoked), scanned A, original, MIT.

A validation check for software build artifacts, the files and records produced by a build. It verifies software inventories, signatures, origin records, and container image digests as they move between workflows.

In plain words
What is it for?
It checks version data, SBOM files, Cosign signatures, SLSA provenance, and matching image digests.
Why use it?
It detects missing or invalid evidence that an artifact was built correctly and has not been replaced unexpectedly.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code; installed under .agents/ (shared by several agents); mentions Codex.

Good fit It checks version data, SBOM files, Cosign signatures, SLSA provenance, and matching image digests.

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Install with agentmods
npx agentmods add skills/paruff/ufawkesai/artifact-flow
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 paruff/uFawkesAI --skill artifact-flow
Clone the repo
git clone --depth 1 https://github.com/paruff/uFawkesAI

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 artifact-flow-validation

README.md
[![agentmods](https://agentmods.dev/badge/skills/paruff/ufawkesai/artifact-flow/github.svg)](https://agentmods.dev/skills/paruff/ufawkesai/artifact-flow)
Your own site
<a href="https://agentmods.dev/skills/paruff/ufawkesai/artifact-flow"><img src="https://agentmods.dev/badge/skills/paruff/ufawkesai/artifact-flow/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 artifact-flow-validation

Your own site · 80×15
<a href="https://agentmods.dev/skills/paruff/ufawkesai/artifact-flow"><img src="https://agentmods.dev/badge/skills/paruff/ufawkesai/artifact-flow.svg" alt="Reviewed on agentmods" width="80" 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 476 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 $0.00033 $0.00476
Opus 5 $0.00016 $0.00238
Sonnet 5 $0.00007 $0.00095
Haiku 4.5 $0.00003 $0.00048

Measured 6d ago against content hash e1bf1399d3cf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

artifact-flow-validation 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 6d 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/skills/integration-testing/pipe-to-obs/artifact-flow/SKILL.md · 73 lines

What it actually says

Skill: Artifact Flow Validation

Load trigger: "load artifact-flow-validation skill" > DORA: Cap 4 (CI/CD Automation) Token cost: Low

Purpose

Ensure PIPE produces correct artifacts and OBS consumes them correctly.

Responsibilities

  • Validate SBOM presence
  • Validate Cosign signatures
  • Validate provenance
  • Validate image digest resolution

Inputs

  • version.json
  • Build artifacts

Outputs

  • artifact-flow.json

Required Artifacts

Artifact Producer Consumer Validation
version.json PIPE OBS Valid semver
sbom.json PIPE OBS Valid SPDX/CycloneDX
signature PIPE OBS Valid Cosign
provenance.json PIPE OBS Valid SLSA
image_digest PIPE OBS sha256 match

Validation Rules

  • All artifacts present
  • All artifacts valid
  • Artifacts flow correctly from PIPE to OBS
  • No missing artifacts

Output Format

{
  "skill": "artifact-flow-validation",
  "status": "pass | fail",
  "artifacts": {
    "version_json": { "present": true, "valid": true },
    "sbom": { "present": true, "valid": true },
    "signature": { "present": true, "valid": true },
    "provenance": { "present": true, "valid": true },
    "image_digest": { "present": true, "valid": true }
  }
}

Success Criteria

  • All artifacts present and valid
  • Correct flow from PIPE to OBS
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. 6d ago First seen · 73 lines · 33 tokens per session scan A e1bf1399d3cf

Subscribe to this mod's changes

artifact-flow-validation is a skill published in the GitHub repository paruff/uFawkesAI (2 stars, last pushed 18d ago), licensed MIT. It adds 33 tokens to every session and 476 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 2026-09-03.

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