Planning that writes the contract first
Grelve turns one messy product idea into intake notes, product scope, system design, API contracts, and file-owned work orders before code starts.
13 agents. One generated SaaS.
Build full-stack apps with an agent team that knows the handoff.
Grelve is an open-source orchestration engine where specialized agents plan, scaffold, build, integrate, and review a complete SaaS product from one prompt.
planning stream live
Grelve run
run-id: saas-13
01
Planning
Six agents turn the prompt into durable build docs.
02
Foundation
Data, schema, shell, layout, and design system.
03
Product
Routes, screens, forms, states, and product workflow.
04
Connection
Typed API client and cross-stack alignment.
05
Review
QA pass, fixes, reports, and a runnable preview.
Agent activity
Intake
planning
Product Brief
planning
System Design
planning
API Contract
planning
Task Breakdown
planning
Repo Setup
planning
Backend Data
build wave
Frontend Shell
build wave
Backend API
build wave
Frontend Feature
build wave
Workflow
The whole agent line, from prompt to app.
The orchestrator passes artifacts forward so every agent starts with the same product truth.
Agent system
Every agent has a job, an output, and a boundary.
Grelve avoids one giant vague agent. It uses focused roles that create artifacts, own files, and run in build waves where parallel work is safe.
Agent 01
Intake
Agent 02
Product Brief
Agent 03
System Design
Agent 04
API Contract
Agent 05
Task Breakdown
Agent 06
Repo Setup
Agent 07
Backend Data
Agent 08
Frontend Shell
Agent 09
Backend API
Agent 10
Frontend Feature
Agent 11
API Integration
Agent 12
Integration
Agent 13
Review
What it does
A serious execution loop for real product scaffolds.
Parallel builders with clear ownership
Frontend and backend agents work in waves, each owning specific files so the app moves quickly without every agent stepping on the same code.
Integration and review before handoff
Final agents compare the frontend, backend, and API contract, fix drift, run checks, and leave reports so the generated app is easier to trust.
Open source
Read the engine. Run the flow. Ship the generated app.
The repository includes the Next.js control UI, FastAPI orchestrator, agent skills, streaming events, and preview flow.