EmblemAI
EmblemAI
Formerly Agent Hustle
Open app
Developer docs

Authenticate to EmblemAI over A2A JSON-RPC.

Use this page when you need the exact auth surfaces, endpoint paths, and payment model notes required to call EmblemAI safely from another system.

Integration overview•FAQ•Contact Emblem
Quickstart

The fastest path is simple: authenticate with an API key or JWT, send A2A JSON-RPC to POST /api/a2a, and choose the payment surface that matches your workflow.

  • Use API key when you want the simplest integration path.
  • Use JWT when you already have an Emblem-issued token flow.
  • Use x402 when you want payment-gated, per-tool-call access.

Public endpoints

Production base URL: https://agenthustle.ai

  • Agent Card: /.well-known/agent-card.json
  • Legacy alias: /.well-known/agent.json
  • JSON-RPC endpoint: POST /api/a2a
  • x402 discovery: /.well-known/x402

Payments

EmblemAI supports PAYG, subscriptions, and optional x402 micropayments. PAYG is the default recommendation when you want execution without a long-term commitment.

  • PAYG supported tokens: SOL, SOL_USDC, HUSTLE, ETH, ETH_USDC, BASE_ETH, BASE_USDC
  • x402 supported tokens: BASE_USDC, SOL_USDC

Auth options

Send exactly one of the following headers on each request:

  • Authorization: Bearer <JWT>
  • x-api-key: <apiKey>
Getting an API key

In the web app: login → Settings → Vault Access Key → View/Copy. This is usually the easiest way to authenticate A2A requests.

JWT notes

If you already have an Emblem-issued JWT, you can use it via the Bearer header. If you do not, use the API key path instead.

Example JSON-RPC request

Example calling message/send with blocking execution:

POST https://agenthustle.ai/api/a2a HTTP/1.1
Content-Type: application/json
Accept: application/json
Authorization: Bearer <JWT>
# OR: x-api-key: <apiKey>

{
  "jsonrpc": "2.0",
  "id": "req-123",
  "method": "message/send",
  "params": {
    "message": {
      "kind": "message",
      "role": "user",
      "parts": [{ "kind": "text", "text": "What is the price of SOL?" }]
    },
    "configuration": { "blocking": true }
  }
}

Credentials are out-of-band for A2A. They are not negotiated or issued through A2A methods.

Related resources