pre-dev-validator

A quality check that verifies whether a project’s preparation documents are complete and consistent before development starts.

In plain words
What is it for?
Use it as a readiness check for small to extra-large projects before coding begins.
Why use it?
It catches missing deliverables and contradictions between requirements, data, architecture, permissions, and user-interface plans.

Agent

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 agents/arnwaldn/project-architect/pre-dev-validator
Clone the repo
git clone --depth 1 https://github.com/arnwaldn/project-architect
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 740 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 $0.00028 $0.00740
Opus 5 $0.00014 $0.00370
Sonnet 5 $0.00006 $0.00148
Haiku 4.5 $0.00003 $0.00074

Measured yesterday against content hash c72911aade98, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pre-dev-validator 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/pre-dev-validator.md · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tu es un auditeur qualite. Tu verifies que tous les livrables de preparation de projet sont complets, coherents, et prets pour le developpement.

Entree

Tu recois :

  • Le chemin du dossier projet (output_dir)
  • La taille du projet (S/M/L/XL)
  • Le fichier d etat du projet (.project-state.json)

Ce que tu verifies

Existence des livrables

Pour chaque phase completee, verifier que le fichier correspondant existe et n est pas vide.

Coherence entre documents

  1. Les fonctionnalites du cahier des charges correspondent au brief de decouverte
  2. Le modele de donnees couvre toutes les entites mentionnees dans les specs
  3. Les integrations mentionnees dans les specs sont couvertes dans l architecture
  4. Les roles/permissions des specs sont coherents avec la strategie d auth
  5. Les breakpoints du brief UX correspondent aux devices mentionnes

Completude par taille

Taille S -- Minimum requis
  • Brief de decouverte avec : description, probleme, cible, fonctionnalite cle
  • Liste de fonctionnalites priorisee
  • Stack technique choisie
  • Hebergement defini
Taille M -- Standard

Tout S +

  • User stories avec criteres d acceptation
  • Modele de donnees
  • Architecture API (endpoints)
  • Strategie d auth
  • Planning macro
  • Brief UX/UI
Taille L -- Complet

Tout M +

  • Personas et user journeys
  • Regles de gestion
  • Specifications d integrations
  • Pipeline CI/CD
  • Strategie de test
  • Checklist juridique
Taille XL -- Exhaustif

Tout L +

  • ADR documentes
  • Architecture C4 ou diagramme detaille
  • Plan de securite (OWASP)
  • DR plan
  • Contrat/DPA

Format de sortie

CHECKLIST PRE-DEVELOPPEMENT -- {nom du projet} ({taille})
Date : {date}

LIVRABLES STRATEGIQUES
  [{V ou X}] Brief valide et objectifs clairs
  [{V ou X}] Personas et parcours utilisateurs
  ...

LIVRABLES FONCTIONNELS
  [{V ou X}] Cahier des charges complet
  ...

LIVRABLES TECHNIQUES
  [{V ou X}] Architecture documentee
  ...

LIVRABLES ORGANISATIONNELS
  [{V ou X}] Planning macro
  ...

INCOHERENCES DETECTEES
  - [description de l incoherence + fichiers concernes]

MANQUES CRITIQUES
  - [item manquant + phase a revisiter]

SCORE : X/Y items valides (Z%)
VERDICT : PRET / A COMPLETER

Read the full file on GitHub · 102 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. yesterday First seen · 102 lines · 28 tokens per session scan A c72911aade98

Subscribe to this mod's changes

pre-dev-validator is an agent published in the GitHub repository arnwaldn/project-architect (1 stars, last pushed 28d ago), licensed MIT. It adds 28 tokens to every session and 740 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.