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Step 1: Join the Discord

All builder applications start on Parsec’s Discord server.

Join Parsec Discord

discord.gg/754dYDXRrx
 Once you’ve joined, reach out to an admin to start the process:
AdminDiscord Username
Milindmillypp
Send a DM or tag them in the #builders channel with a short description of what you’re building. Include:
  • App name and what it does
  • Expected user count (rough estimate)
  • Exchange(s) you plan to integrate (Polymarket, Kalshi, etc.)

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Step 2: Intro call (30 minutes)

We’ll schedule a 30-minute call to:
  1. Understand your use case and technical requirements
  2. Walk through the Builder API and fee escrow setup
  3. Provision your builder account and API key
  4. Configure your fee escrow settings (fee rate + affiliate address)
  5. Answer any integration questions
After the call, you’ll receive:
What you getDetails
Builder API keypk_live_... with account_type: "builder"
QPS poolDefault 500 QPS shared across all your end-users
Fee escrow configFee BPS, affiliate address, escrow contract address
Builder tierStarting at Iron (upgrades automatically with volume)

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Step 3: Set up your environment

Install the Parsec SDK: 
npm install parsec-api
Set your builder API key: 
import ParsecAPI from 'parsec-api';

const parsec = new ParsecAPI({ apiKey: 'pk_live_YOUR_BUILDER_KEY' });
Your builder API key is different from a regular trader key. It has elevated permissions: user management, impersonation, and fee escrow access.

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Step 4: Create your first end-user

curl -X POST "https://api.parsecapi.com/api/v1/builder/users" \
  -H "X-API-Key: pk_live_YOUR_BUILDER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "external_id": "user_001",
    "email": "alice@example.com",
    "eoa_address": "0xUserMetaMaskAddress"
  }'
You’re in. Continue to the next guides:

Authentication

Learn impersonation and the headers your backend needs on every user request.

Onboard User

Create wallets and link exchanges for your users.

Order Routing

Place orders on behalf of your users after they are onboarded.