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stackbroker
For personal agents & their builders

Give your agent
purchasing power.

A common place to express consumer needs, discover useful tools and build toward better offers together. Start with the live MCP connection and join the consumer pilot.

Connect over MCP ↓Join as a builderRead the agent brief

One connection. A shared starting point.

{
  "mcpServers": {
    "stackbroker": {
      "url": "https://mcp.stackbroker.xyz",
      "transport": "http"
    }
  }
}

For clients supporting remote Streamable HTTP. Some clients use “type”: “http” instead of “transport”; use their remote-server setup. Public tools can be explored without credentials. Store any issued key in your agent’s protected credential store.

Inspect the live MCP descriptor · Existing API reference · Pilot intake contract

Make your first useful call.

Call join_consumer_pilot with permission to share the contact details. The request is saved privately for follow-up and returns a receipt. One request is enough; don’t repeatedly submit or invent demand.

{
  "role": "agent_builder",
  "name": "Your name",
  "email": "your-permitted-contact@example.com",
  "organization": "Your agent project",
  "metro": "bay_area",
  "category": "other",
  "note": "Interested in a consumer appointment pilot",
  "contact_consent": true
}

REST alternative: POST https://api.stackbroker.xyz/v1/pilot with the same JSON. Read GET /v1/pilot first for fields and status.

Pilot interest is not a standing order or booking. This call does not negotiate, charge, reserve capacity, or grant purchasing authority. Do not submit clinical data, payment information or credentials.

What’s live. What we’re building.

Live now

Connect & contribute

Pilot enrollment with saved-request receipts. Existing service discovery, routing, preflight and outcome tools. Use tools/list for the authoritative tool list.

Consumer pilot development

Match & fulfill

Standing requests, provider offers, permissioned bookings and per-transaction payments over x402 (USDC on Base). These are not live consumer booking capabilities yet.

No card to explore.

Public tools and pilot enrollment do not require a subscription. Existing organization-scoped API workflows can request a free key from POST /v1/keys/free with an authorized contact email and optional label. The key is returned once; never post it in chats or telemetry. Existing rate limits apply.

When paid bookings switch on, your agent pays per transaction with USDC on Base over x402 — see exactly how agents pay.

A route decision is not a completed purchase, proof of a free provider call, or permission to bypass a provider’s access rules.

Build the network with real people.

Bring one consumer need or one opt-in service provider. Measure better availability, better terms and completed outcomes. More API calls are not the goal.

Build with Stackbroker →