ensemble-analyze-requirements

ensemble-analyze-requirements is a skill for Claude Code, Codex from FortiumPartners/ensemble. It costs 45 tokens per session (2,693 once invoked), scanned A, original, MIT.

A pre-coding review of a product requirements document, technical requirements document, and task list. It checks whether these documents agree and cover the planned work.

In plain words
What is it for?
Use it to assess whether a project is ready for coding and to get a readiness score with specific fixes.
Why use it?
It helps catch missing requirements, contradictions, invalid references, and untested tasks before implementation starts.

Skill for Claude CodeCodex

Written for Claude Code and Codex: user-invocable in frontmatter, but also installed under .codex/. Also seen: model in frontmatter; mentions Codex.

Part of the ensemble-codex plugin — 40 skills shipped together

Good fit Use it to assess whether a project is ready for coding and to get a readiness score with specific fixes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fortiumpartners/ensemble/ensemble-analyze-requirements
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 FortiumPartners/ensemble --skill ensemble-analyze-requirements
Clone the repo
git clone --depth 1 https://github.com/FortiumPartners/ensemble

Made for: Claude Code, Codex.

Or install ensemble-codex, the plugin that ships this one along with the rest of its 40 skills.

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 ensemble-analyze-requirements

README.md
[![agentmods](https://agentmods.dev/badge/skills/fortiumpartners/ensemble/ensemble-analyze-requirements/github.svg)](https://agentmods.dev/skills/fortiumpartners/ensemble/ensemble-analyze-requirements)
Your own site
<a href="https://agentmods.dev/skills/fortiumpartners/ensemble/ensemble-analyze-requirements"><img src="https://agentmods.dev/badge/skills/fortiumpartners/ensemble/ensemble-analyze-requirements/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 ensemble-analyze-requirements

Your own site · 80×15
<a href="https://agentmods.dev/skills/fortiumpartners/ensemble/ensemble-analyze-requirements"><img src="https://agentmods.dev/badge/skills/fortiumpartners/ensemble/ensemble-analyze-requirements.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,693 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.
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 $0.00045 $0.02693
Opus 5 $0.00023 $0.01347
Sonnet 5 $0.00009 $0.00539
Haiku 4.5 $0.00005 $0.00269

Measured 10d ago against content hash 5ede12c411bf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

ensemble-analyze-requirements 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 10d 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.

packages/codex/.codex/skills/commands/ensemble-analyze-requirements/SKILL.md · 209 lines

How it starts

The opening of the file, as written. The whole thing — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Ensemble Command: /ensemble:analyze-requirements

This Codex skill mirrors the Ensemble slash command /ensemble:analyze-requirements. Follow the workflow below, adapt to the current repository, and keep outputs structured.

Perform a holistic pre-implementation sweep across PRD, TRD, and (if available) the task bead list. Check that the PRD is structurally complete, that every REQ-NNN has TRD coverage, that no cross-document contradictions exist, that all [satisfies] annotations reference real PRD IDs, that every implementation task has a paired -TEST task, and that all AC references in TRD are valid. Produce a READINESS SCORE and actionable remediation suggestions.

Workflow

Phase 1: Input Validation

1. Argument Resolution Verify that both required arguments are provided and that both files exist on disk.

If $ARGUMENTS does not contain two tokens: print 'ERROR: Usage: /ensemble:analyze-requirements ' and EXIT with code 1. Resolve PRD_PATH from the first argument. If file does not exist: print 'ERROR: PRD file not found: <PRD_PATH>' and EXIT with code 1. Resolve TRD_PATH from the second argument. If file does not exist: print 'ERROR: TRD file not found: <TRD_PATH>' and EXIT with code 1.

2. Document Loading Read both documents into memory for analysis.

Read PRD_PATH in full. Record the raw text as PRD_TEXT. Read TRD_PATH in full. Record the raw text as TRD_TEXT. Print 'Loaded PRD: <PRD_PATH> ( lines)'. Print 'Loaded TRD: <TRD_PATH> ( lines)'.

Phase 2: PRD Completeness Check

1. Structural Completeness Verify the PRD contains all required structural elements for full traceability support.

Check for presence of each element and record findings in PRD_STRUCTURE_ISSUES:

  • REQ-NNN IDs: H3 headings matching '### REQ-NNN:' — if absent, record ERROR 'PRD has no REQ-NNN requirement IDs. Traceability analysis cannot proceed.'
  • AC-NNN-M sub-items: bullet items matching '- AC-NNN-M:' — if absent, record WARNING 'PRD has no AC-NNN-M acceptance criteria sub-items.'
  • Given/When/Then format: if ACs exist but none contain 'Given', 'When', 'Then' keywords, record WARNING 'PRD acceptance criteria do not follow Given/When/Then format.'
  • Non-goals section: if no '## Non-Goals', '## Out of Scope', or '## Exclusions' heading found, record WARNING 'PRD is missing a Non-Goals or Out of Scope section.'
  • Constraints section: if no '## Constraints', '## Assumptions', or '## Dependencies' heading found, record WARNING 'PRD is missing a Constraints, Assumptions, or Dependencies section.'

Read the full file on GitHub · 209 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. 10d ago First seen · 209 lines · 45 tokens per session scan A 5ede12c411bf

Subscribe to this mod's changes

ensemble-analyze-requirements is a skill published in the GitHub repository FortiumPartners/ensemble (12 stars, last pushed 2d ago), licensed MIT. It adds 45 tokens to every session and 2,693 once invoked, about $0.0002 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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