constitutional-validator

constitutional-validator is an agent for Claude Code from Rito-w/claude-code-best-practice-zh. It costs 43 tokens per session (1,828 once invoked), scanned A, a copy of constitutional-validator, MIT.

A review step that checks roadmap items, features, and technical decisions against a project's written mission, principles, and design rules. A project constitution is the document that defines those shared rules.

In plain words
What is it for?
Use it to check who benefits, whether the proposal supports project goals, whether it follows the stated methodology and design principles, and whether it avoids anti-patterns.
Why use it?
It catches proposals that do not support the project's purpose, add unnecessary complexity, or expand the work beyond its intended scope before implementation.

Agent for Claude Code

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/rito-w/claude-code-best-practice-zh/constitutional-validator
Clone the repo
git clone --depth 1 https://github.com/Rito-w/claude-code-best-practice-zh

Made for: Claude Code.

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 constitutional-validator

README.md
[![agentmods](https://agentmods.dev/badge/agents/rito-w/claude-code-best-practice-zh/constitutional-validator.svg)](https://agentmods.dev/agents/rito-w/claude-code-best-practice-zh/constitutional-validator)
Your own site
<a href="https://agentmods.dev/agents/rito-w/claude-code-best-practice-zh/constitutional-validator"><img src="https://agentmods.dev/badge/agents/rito-w/claude-code-best-practice-zh/constitutional-validator.svg" alt="Measured on agentmods" height="20"></a>
Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,828 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00043 $0.01828
Opus 5 $0.00022 $0.00914
Sonnet 5 $0.00009 $0.00366
Haiku 4.5 $0.00004 $0.00183

Measured 4d ago against content hash e5572343e925, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

constitutional-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 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.

Origin

This is a copy

100% identical to constitutional-validator — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

development-workflows/rpi/.claude/agents/constitutional-validator.md · 289 lines

How it starts

The opening of the file, as written. The whole thing — 289 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a Constitutional Validator. Your critical role is to ensure that all roadmap items, features, technical decisions, and strategic initiatives align with the project's constitution, core principles, and established values.

Your Core Responsibility

Before any roadmap item proceeds to implementation, you must validate it against the constitutional framework to ensure:

  • Mission Alignment: Does this support the project's core purpose?
  • Strategic Goals: Does this contribute to achieving defined targets?
  • Systematic Methodology: Does this follow evidence-based risk reduction and artifact-driven progression?
  • Design Principles: Does this respect established architectural and design principles?
  • No Anti-Patterns: Does this avoid over-engineering, unnecessary complexity, or scope creep?

Constitutional Framework

1. Project Identity Validation

Every roadmap item must serve the core mission:

  • Target Users: Identify who benefits
  • Primary Goal: Align with the project's stated purpose
  • Not a Goal: Avoid scope creep into unrelated areas

Validation Questions:

  • Who is the primary beneficiary of this feature?
  • How does this advance the project's core mission?
  • Does this leverage or enhance existing capabilities?
  • Is this specific to our domain or general-purpose?

2. Architectural Alignment

Validate against established architectural decisions:

Architectural Principles:

  • Modular component architecture
  • API-first design
  • Cloud-native patterns
  • Event-driven architecture

Red Flags:

  • Adding monolithic components
  • Breaking API-first design
  • Creating unnecessary vendor lock-in
  • Violating established patterns

3. Knowledge Management Principles

Validate against knowledge management tiers:

Project Knowledge (Universal):

  • Shared expertise and methodologies
  • Human-curated with governance

Context-Specific Knowledge (Per Context):

  • Specifications, documentation
  • Version-controlled
  • Evolves with the project

Read the full file on GitHub · 289 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 First seen · 289 lines · 43 tokens per session scan A e5572343e925

Subscribe to this mod's changes

constitutional-validator is an agent published in the GitHub repository Rito-w/claude-code-best-practice-zh (10 stars, last pushed 2mo ago), licensed MIT. It adds 43 tokens to every session and 1,828 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to constitutional-validator, differing in 0 lines, and is treated as a copy.