---
title: "PRD Agent: AI Requirements From Your Research | ProductOS"
description: "The ProductOS PRD Agent writes structured requirements section by section, grounded in your ideation and research artifacts, with PRFAQ, Lean, and Enterprise templates."
url: https://productos.dev/agents/prd-agent
---

Stage 3 · Define

# PRD Agent

A requirements writer grounded in your research, not invention

[All agents](https://productos.dev/agents)

## What does the PRD Agent do?

> “Every section you write must be grounded in the prior stages' artifacts, not invented from scratch.”From the agent's actual system prompt

The PRD Agent translates the concept and research into a structured product requirements document, one section at a time behind an outline-approval gate. It works from four templates: ProductOS Standard, Amazon PRFAQ, Lean, and Enterprise or Regulated.

Because it writes against the actual ideation and research artifacts, every requirement traces back to evidence. In revision mode it makes targeted edits instead of rewriting, so an approved spec stays approved.

## What tools does the PRD Agent use?

- `write_prd_section`
Writes one PRD section per call, the primary deliverable
- `load_constraints`
Loads the project's locked constraints before writing
- `ask_agent`
Consults the Research or Ideation Agent when a section needs evidence
- `web_search`
Fills small factual gaps without leaving the document

Reads
- The ideation brief
- The research synthesis
- A section spec from the approved outline

Produces
- PRD sections and an executive summary
- Four template formats: Standard, PRFAQ, Lean, Enterprise

In the pipeline

[Before: Research Agent](https://productos.dev/agents/research-agent) [After: Architect Agent](https://productos.dev/agents/architect-agent)

## Put the PRD Agent to work.

Every agent works from the same shared context. Describe your idea once and the whole team builds on it.

[Start on Free](https://beta.productos.dev/sign-up?utm%5Fsource=productos.dev/agents/prd-agent) [Meet the whole team](https://productos.dev/agents)