One source of truth. A file for every tool.

A specification signed off section by section, then a package of files your coding agent, issue tracker or chat assistant can read. OrgCue stops at the handoff.

AGENTS.md# Northwind CRM · v1.1Read in order: spec.md → plan.md → tasks.md## Invariants- SEC-01 SSO with MFA- DATA-04 EU only# Features## Feature: Pipeline- PL-01 Manager moves back## Not in this package- Outlook sync (Phase 2)

CClaude Code ▲Cursor ◆GitHub Copilot ✦Gemini · Windsurf ❝Chat assistants

A specification built on standards people already trust.

Thirteen sections, from the product summary and story map to architecture, threat model, AI features and traceability. Every feature gets an owner and a «ready» score: job, flow, rules, data and permissions, edge cases and criteria. Claude drafts each one from your requirements; you edit it and sign it off. The handoff cannot close until every section is signed.

ISO 29148EARSC4 · ADRSTRIDEEU AI ActISO 25010

Specification · 10 of 13 signed

✓1 · Product summary (PR-FAQ)Signed

✓3 · Story map and MVPSigned

◐6 · Architecture (C4, ADRs)Edited

✦9 · Security (STRIDE, ASVS L2)Drafted by Claude

!F3 has no main flow yetGap

Every file prepared, connected or not.

Preview any file in the tree, copy it, or download the whole package as a zip. Import files for Jira, Linear and GitHub, plus MCP configs for Claude Code, Cursor and VS Code, are ready even with nothing connected.

Switch features in or out of the package; the invariants always stay
AGENTS.md: invariants first, then one section per feature
Each features/*.md holds only that feature’s local rules

CODING AGENTSAGENTS.mdCLAUDE.md.cursor/rules/…SPECIFICATIONspec.md · plan.mdfeatures/*.mdTESTS · ISSUES · MCPevals.jsonlimport/jira.csv.mcp.json

AGENTS.mdCopy# Northwind CRM Version 1.1 · 42 requirements ## How to use this repo's specs 1. Read spec.md 2. Follow plan.md 3. Pick a task from tasks.mdDownload the package (.zip)

A system prompt for teams without developers.

Put the whole specification into Claude Projects, ChatGPT Enterprise or a Custom GPT as a single prompt: role, context, invariants, rules per area, must-nots, examples and output format. XML or Markdown, with a token count. Names and personal data are left out.

<system_instructions>
  <role>You are the assistant for Northwind CRM…</role>
  <hard_invariants>
    <rule id="REQ-DATA-04">Customer data stays in the EU.</rule>
  </hard_invariants>
  <negative_constraints>
    <rule>Do not send e-mail without a rep.</rule>
  </negative_constraints>
</system_instructions>

≈ 2 140 tokensClaude ProjectCopy system prompt

REVISIONSEvery change becomes a version you can compare.

v1.0 · handoff42 requirements

Pulse · ERP delay2 change requests

v1.1+2 Shoulds · 1 changed

v2.0 · nextA Must changes

The platform underneath.

AI models, integrations, security and what is real today.Next: Platform →

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