Case Study · Multi-Agent System

Your daily LinkedIn post,
drafted from your real work.

PostAgent is a multi-agent system that turns your shipped work into posts worth reading. Open it. Pick one. Post.

PostAgent — AI Agent for LinkedIn Content landing page
~75s
End-to-end pipeline
reading → drafting → jury
8/10
Avg reader-appeal score
Strong band by default
4
Tool calls per run
narrow, deterministic surface
25
LLM calls per run
budgeted + idempotent
3-judge
Jury vote
anti-slop · engineer · builder
1-click
Post to LinkedIn
editable before publish
The Problem

LinkedIn writing is broken in both directions.

Builders ship real work every day and have nothing to show for it on LinkedIn. The blank page wins. Most "AI writers" replace the blank page with worse: recycled hooks, hollow claims, generic advice that nobody asked for.

The market is full of single-prompt content tools that produce slop at scale. There's no system anchoring writing to what the builder actually did this week, and no system catching the slop before it ships.

The Pipeline

A 5-stage multi-agent pipeline

Each stage is bounded — budgeted LLM calls, narrow tool surface, idempotent. The whole pipeline runs end-to-end in about 75 seconds.

Stage 01

Reading your story

Loading proofs, trends, and recent posts

202ms
Stage 02

Thinking about angles

Brainstorming candidate topics from your story

4 tool · 2 llm · 35s
Stage 03

Drafting

Writing 1–3 variants per topic

3 llm · 21s
Stage 04

Quality checks

Receipts · anti-slop · jury vote

16s
Stage 05

Finalizing

Picking winners and writing finals

181ms
Behind the post

Every draft shows the agent work

Reader-appeal score, full pipeline timing, tool calls, jury votes — visible per draft. No black-box generation.

PostAgent compose view — pipeline timing, tool calls, and three-judge jury
The Anti-Slop Layer

A three-judge jury vetoes the slop

Every draft is read by three independent judges with sharp, different taste profiles. A draft only ships if it passes the jury.

Judge

Anti-Slop

Pattern classifier

Catches generic LinkedIn slop before it ships — recycled hooks, vague claims, hollow advice, and the usual hustle-grifter tropes.

Judge

Cynical Engineer

Bullshit detector

Reads every draft like a senior IC who has seen too much hype. Calls out unfounded claims and demands receipts for every assertion.

Judge

AI Builder

Builder taste

Reads as a peer building real products. Pushes for specificity, concrete examples, and writing that respects the reader.

What We Built

A multi-agent compose pipeline with budgeted, idempotent stages

Story reader pulls proofs, trends, and recent posts as context — every draft is anchored to real work

Angle generator brainstorms candidate topics with a narrow, deterministic tool surface

Drafter writes 1–3 variants per topic with structured outputs

Quality stage runs receipts validation, anti-slop classification, and a three-judge jury vote

Finalizer picks the winning variants and writes the final post text

Per-stage budgets cap LLM call counts; each stage is idempotent and re-runnable

Reader-appeal score is computed from jury vote + classifier signal — visible per draft

One-click post to LinkedIn with edit-before-publish so the human stays in the loop

Technology Stack

Built to be cheap to run and easy to ship

React + Vite frontend, Node.js + PostgreSQL backend, multi-model orchestration. Pipeline cost stays under a cent per draft.

React
Vite
TypeScript
Node.js
Drizzle ORM
PostgreSQL
OpenAI
Anthropic
Multi-Agent Orchestration

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