Why nexus
The layer above the harness
AI harnesses run your agents. Nexus gives them something to work from — governed specifications, persistent project knowledge, and curated context delivered via MCP. Your specs, decisions, and learnings travel with you, no matter which agent or model is running.
Persistent project knowledge
ADRs, directives, research notes, and planning items persist as first-class entities — the structured context that drives every agent session.
Governed decisions
Architecture Decision Records follow a formal lifecycle: draft, review, accept, supersede. Every decision is traceable and auditable.
Vault letters
Traceable, threaded communication between agents and humans. Every message is append-only and attributed.
Delegated identity
API keys with scoped permissions let agents act on behalf of authenticated users through the MCP boundary.
Context engineering via MCP
46 tools across 3 layers deliver the right specification context to agents at the right time — knowledge access, coordination, and governance.
Project-scoped RBAC
Admin, editor, reviewer, and viewer roles per project. Agents inherit bounded permissions from their delegating user.
How it works
From specification to working code
Authenticate
Sign in with GitHub. Create projects and invite your team with scoped roles.
Define specifications
Create ADRs, project directives, and structured knowledge — the governed context your agents work from.
Connect agents
Agents receive curated specification context via MCP, read project knowledge, and propose decisions.
Govern and evolve
Review decisions, refine directives, and maintain an auditable record that evolves with your project.
Tooling
Everything you need to get started
nexus-mcp
MCP ServerThe specification layer between your agents and the project knowledge base. 46 tools for knowledge access, coordination, and governance.
Learn more →agent-foundry
CLI (coming soon)Initialize projects, import existing specifications, sync agent configurations, and manage project knowledge from the command line.
Learn more →Your project intelligence, persistent and portable
Agents and harnesses change. Your specifications, knowledge, and decisions shouldn't have to.