48h MVP hub — preserved entry routing page. Canonical MVP intake: /start · Founder home

Global platform · teams worldwide

Integration platform · apps · machines · proof

For AI startup founders · Cursor developers · agentic teams everywhere

The agentic stack that proves itself.

Sign in to run Chat Unify, Prompt Forge, and Cloud Workers on one governed platform — or download the Mac app and start locally. Policy before dispatch. Receipts on disk. PASS or BLOCK — never chat memory.

ForgeConnectVerifyProveRun
BrainOrchestrates opsLive
OutreachPipelineActive
ProveReplay closeReady
BuildShip loops48h MVP
GuardBLOCK bad movesGated
platform.sourcea.app Factory live

Global runtime · cloud + desktop · SourceA account

Platform Loading live factory…

Powered by

  • Temporal
  • Anthropic Claude
  • OpenAI
  • LangGraph
  • Cursor
  • Cloudflare

receipts signed on disk · today

Receipts on disk Governance receipts signed · today
Proof checks Live sample · checks passing
Rules gate PASS or BLOCK · honest gates
Explore products

Three ways in

Desktop · cloud · sandbox — same proof layer.

Sign in for cloud runtime, download for local-first, or try the free sandbox — governed machines everywhere.

Desktop app

Chat Unify.app

Mac · local-first

  • Paste · verify · audit · forge
  • Privacy-first · ~/.sina/ sessions
  • Works offline · syncs when signed in
Download .dmg
Free tier

Proof sandbox

$0 · eval

  • Factory demos · real receipts
  • Try Prompt Forge · no card
  • sourcea-boot on GitHub
Open sandbox →

Verify

Seven-step gate on every reply.

Sign in →

Who you are

We route you — wherever you ship from.

01 · Founder

AI startup building with agents

Platform subscription, Chat Unify, governed factories — ship product with proof on every run.

Sign in →

02 · Developer

Cursor · MCP · webhooks

Prompt Forge, Connect hub, Cloud Workers — pro workflows with sealed receipts.

Forge hub →

03 · Speed

Need an MVP in 48 hours

Fixed $2K–$10K scope — App Store, web, or prototype delivered fast.

48h MVP →

04 · Buyer

Evaluator or procurement

Scenario replay, proof chain, compare matrix — the kernel evaluation site.

Kernel →

Why SourceA

What separates us in 2026 agentic systems.

Proof on disk — not chat memory

Every agent run leaves a signed receipt. Screen-share ready. Auditors can replay the chain.

PASS / BLOCK before dispatch

Policy gates block harmful moves before they hit production. Honest red stays red.

One stack — desktop + cloud

Same machines whether you sign in globally or run Chat Unify locally on Mac.

Built for real operators

Founders, Cursor pros, and teams who never touched an IDE — same governed layer.

Built on

  • Temporal
  • Anthropic Claude
  • OpenAI
  • LangGraph
  • Cursor
  • Cloudflare

Run your agentic stack on proof.

Join teams worldwide on the platform built for governed agentic systems — sign in, download, or start a 48h MVP today.

Global platform Worldwide Cloud runtime · remote teams · any timezone
Receipts Signed on disk · not chat memory
Governance PASS / BLOCK · four checks

SourceA — governed agentic systems for founders & developers worldwide · Live status