SpecValidator

SpecValidator is an agent for coding agents from attilaszasz/sdd-pilot. It costs 23 tokens per session (1,174 once invoked), scanned A, original, MIT.

An automated checker for a feature specification: a document describing what should be built. It returns a structured pass-or-fail result, a score, specific problems and suggested fixes.

In plain words
What is it for?
Use it to assess whether a specification is complete, focused on the intended value, understandable to stakeholders and free of misplaced implementation details.
Why use it?
It replaces a general opinion about whether a specification is ready with explicit checks against defined quality criteria. It also counts unresolved clarification markers.

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/attilaszasz/sdd-pilot/_spec-validator
Clone the repo
git clone --depth 1 https://github.com/attilaszasz/sdd-pilot

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 SpecValidator

README.md
[![agentmods](https://agentmods.dev/badge/agents/attilaszasz/sdd-pilot/_spec-validator.svg)](https://agentmods.dev/agents/attilaszasz/sdd-pilot/_spec-validator)
Your own site
<a href="https://agentmods.dev/agents/attilaszasz/sdd-pilot/_spec-validator"><img src="https://agentmods.dev/badge/agents/attilaszasz/sdd-pilot/_spec-validator.svg" alt="Measured on agentmods" height="20"></a>
Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,174 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 $0.00023 $0.01174
Opus 5 $0.00012 $0.00587
Sonnet 5 $0.00005 $0.00235
Haiku 4.5 $0.00002 $0.00117

Measured 5d ago against content hash d3bf77f39d48, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

SpecValidator 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 5d 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.

.github/agents/_spec-validator.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Task

Evaluate spec.md against quality and readiness criteria.

Inputs

Specification path and optional checklist output path.

Execution Rules

Assess each criterion explicitly, avoid subjective scoring language, and keep issue statements terse.

Output Format

Return pass/fail verdict, score, failing items, and recommended fixes.

  1. Run node scripts/parse-requirement-ownership.mjs "SpecPath" and the shared executable evaluator from the repository root: node --input-type=module -e "import { readFileSync } from 'node:fs'; import { evaluateSpecGate } from './scripts/phase-gates.mjs'; console.log(JSON.stringify(evaluateSpecGate(readFileSync(process.argv[1]))))" "SpecPath". Its verdict is canonical for every deterministic criterion below; do not recreate rules by phrase matching. Count every literal unresolved [NEEDS CLARIFICATION: ...] marker and retain the exact count.
  2. Evaluate each criterion as PASS or FAIL (quote specific issue if failing):

Content Quality

  • No implementation details belonging in plan.md or code
  • Focused on intended value for active spec_type
  • Written for stakeholders needing requirements clarity
  • All mandatory sections completed for active spec_type
  • Problem Statement present and covers: pain point, who's affected, consequences of inaction
  • Scope section present with Included, Excluded, and Edge Cases & Boundaries

Frontmatter Completeness

  • YAML frontmatter present with spec_type (product | technical | operational; absent → treated as product and flagged)
  • spec_maturity field present (draft | clarified | higher)
  • epic_id field present when specs/project-plan.md exists (links spec to epic)
  • No empty required frontmatter fields

Read the full file on GitHub · 89 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. 5d ago First seen · 89 lines · 23 tokens per session scan A d3bf77f39d48

Subscribe to this mod's changes

SpecValidator is an agent published in the GitHub repository attilaszasz/sdd-pilot (95 stars, last pushed today), licensed MIT. It adds 23 tokens to every session and 1,174 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 2026-08-30.

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