conformetry-validate

A guide for running conformetry, a check that compares generated code on disk with the template it came from.

In plain words
What is it for?
Use it to run checks for one project or a whole Nx workspace, narrow the check while iterating, and fix reported conformance differences.
Why use it?
It identifies declarations, files, comments, or other template parts that are missing from generated code.

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/jimmypaolini/codebase/conformetry-validate
Any agent
npx skills add JimmyPaolini/codebase --skill conformetry-validate
Clone the repo
git clone --depth 1 https://github.com/JimmyPaolini/codebase

Made for: Claude Code, Codex.

Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,755 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 $0.00097 $0.01755
Opus 5 $0.00048 $0.00877
Sonnet 5 $0.00019 $0.00351
Haiku 4.5 $0.00010 $0.00176

Measured yesterday against content hash 346db03a8e51, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

conformetry-validate 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 yesterday.

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/conformetry-validate/SKILL.md · 189 lines

How it starts

The opening of the file, as written. The whole thing — 189 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Checking conformance and fixing differences

Conformance measures an instance — generated code on disk — against the template it came from. A difference is something the template declares that the instance lacks.

The one rule that governs every language

The instance must carry everything its template declares. Anything it adds is never a difference.

Extra declarations, extra keys, extra lines, extra files, reordered class members: all fine. So the fix for a difference is almost always to add what is missing, never to delete what is extra. An agent that starts removing content to make a file conform is working against the mechanism.

Implement freely inside generated files. Function bodies are not compared at all.

Running it

Per project, or across the workspace:

nx run <project>:conformetry-validate
nx run-many --targets=conformetry-validate

Without Nx, the command-line host does the same:

conformetry validate

Both accept a language filter, and the command-line host also accepts a one-off glob override in place of the configured instances. Narrowing is for iterating; let the full run be the gate.

Reading a report

A report opens with a score summary when anything scored below a perfect match, then lists each file, the instance and template it compared, and every difference with a suggested fix:

  1. file: orders.service.ts
     Instance: packages/widgets/src/modules/orders/orders.service.ts
     Template: configuration/conformetry-templates/nestjs-service-module/…

     1. Missing Decorator "Injectable"
        Instance: Line 12, Column 1
        Template: Line 8, Column 1
        Fix     : Add the missing Decorator "Injectable" to the instance file.

Read the Fix line before inventing a remedy. Every difference carries one, and it names the specific construct rather than describing the file in general.

Locations are 1-based. JSON differences report a path such as scripts.build[0] instead of a line, because a key has no meaningful line in a reformatted file.

Read the full file on GitHub · 189 lines

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. yesterday First seen · 189 lines · 97 tokens per session scan A 346db03a8e51

Subscribe to this mod's changes

conformetry-validate is a skill published in the GitHub repository JimmyPaolini/codebase (0 stars, last pushed yesterday), licensed MIT. It adds 97 tokens to every session and 1,755 once invoked, about $0.0005 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 2026-09-01.

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