factory-evidence

factory-evidence is a skill for Claude Code, Codex from nicolasmelo1/software-factory. It costs 59 tokens per session (1,167 once invoked), scanned A, original, MIT.

A process for proving that a software-factory gate works and recording the proof in an evidence manifest. A gate is a required check that must pass before a phase is complete.

In plain words
What is it for?
Running real end-to-end user scenarios, recording their results, sealing evidence for a gate, and checking that the proof is still valid after code changes.
Why use it?
It prevents a project from claiming that a change works when the supporting test evidence is missing, outdated, or unrelated to the current code.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Running real end-to-end user scenarios, recording their results, sealing evidence for a gate, and checking that the proof is still valid after code changes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nicolasmelo1/software-factory/factory-evidence
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 nicolasmelo1/software-factory --skill factory-evidence
Clone the repo
git clone --depth 1 https://github.com/nicolasmelo1/software-factory

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 factory-evidence

README.md
[![agentmods](https://agentmods.dev/badge/skills/nicolasmelo1/software-factory/factory-evidence/github.svg)](https://agentmods.dev/skills/nicolasmelo1/software-factory/factory-evidence)
Your own site
<a href="https://agentmods.dev/skills/nicolasmelo1/software-factory/factory-evidence"><img src="https://agentmods.dev/badge/skills/nicolasmelo1/software-factory/factory-evidence/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 factory-evidence

Your own site · 80×15
<a href="https://agentmods.dev/skills/nicolasmelo1/software-factory/factory-evidence"><img src="https://agentmods.dev/badge/skills/nicolasmelo1/software-factory/factory-evidence.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,167 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00059 $0.01167
Opus 5 $0.00030 $0.00583
Sonnet 5 $0.00012 $0.00233
Haiku 4.5 $0.00006 $0.00117

Measured 4d ago against content hash 41f207ebf6c1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

factory-evidence 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.

skills/factory-evidence/SKILL.md · 110 lines

How it starts

The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.

factory-evidence

A feature needs proof. Your job is to make its gate green by proving the thing, never by making a manifest say so.

First decide which state you are in:

  • A runnable harness exists: re-run it, collect fresh observations and seal its evidence.
  • The feature has no harness or gate: discover the customer flow, write the harness and gate, run the first proof, then seal it.

sf re-reads the raw report, recomputes its digest, and re-checks every required assertion. Nothing you write in the manifest survives contact with a report that does not back it.

When the harness does not exist yet

Read the repository before asking questions. Find its README, local-development commands, service manifests, seed data, test helpers, health endpoints and any existing end-to-end tests. Run its doctor or readiness command when one exists. Do not infer that npm test or cargo test starts the product: tests are not a customer flow.

Settle only the facts code cannot reveal with the maintainer:

  1. Which actor meets this flow, and what outcome can that actor observe?
  2. What exact command starts the real entry point, and what dependencies, credentials or seed state does it require?
  3. What are the smallest observable assertions that make the outcome true?
  4. How can the harness create and clean up test data without borrowing an internal shortcut the actor would not have?

If an answer is missing, stop and record the prerequisite. A harness that guesses a startup command is a runbook pretending to be a proof.

Create .software-factory/evidence/<gate>-scenario.sh (or the repository's equivalent executable location). It accepts explicit inputs, starts the real entry point, waits for readiness, drives the public interface, collects the observations, and cleans up processes and data even when interrupted. Shell is a good default for orchestration; use the repository's normal language when the observations need its client libraries. Do not add a browser driver, a new test framework or a mock simply to make this easier.

Read the full file on GitHub · 110 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. 4d ago Changed · +47 lines · -2 tokens per session 41f207ebf6c1
  2. 9d ago First seen · 63 lines · 61 tokens per session scan A e52e52795c4b

Subscribe to this mod's changes

factory-evidence is a skill published in the GitHub repository nicolasmelo1/software-factory (31 stars, last pushed today), licensed MIT. It adds 59 tokens to every session and 1,167 once invoked, about $0.0003 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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