Generate structured specs from a prompt. Problem, Scope, Approach, and acceptance criteria — ready for review.
Real-time co-editing with project memory. Your team works from the same context, always.
MCP Server for Claude Code, Cursor, and any compatible tool. Specs become machine-readable context.
Each spec follows a consistent structure: Problem, Scope, Out of Scope, and Approach. Add Given/When/Then acceptance criteria. Generate with AI or write from scratch.
Co-edit specs in real-time with Y.js. Project Memory stores domain rules, constraints, and technical decisions — automatically injected into every Change.
Connect Claude Code, Cursor, or any MCP-compatible tool. 9 built-in tools let AI agents read specs, write proposals, and update tasks. No binary install — just a URL and token.
list_projectsget_changeread_specwrite_speclist_tasksupdate_tasksuggest_speclist_acceptance_criteriacreate_acceptance_criteria{
"mcpServers": {
"colign": {
"url": "https://api.colign.co/mcp",
"headers": {
"Authorization": "Bearer col_..."
}
}
}
}The entire platform is AGPL-3.0 open source. You own your data. Self-host forever.
Fork, modify, contribute. Cloud is live.
Architecture
Self-host and run it yourself, or get started instantly on Colign Cloud.
Full platform. Free forever.
AGPL-3.0
Full platform is open source. All features included in self-hosted.