For an individual running a small agent force.
- Up to 3 registered agents
- All off-the-shelf stacks
- Base spend policy (tunable)
- Edge pre-flight: policy + routing + proof
- Earn subscription credit for agent feedback
A wrong vendor choice wastes the call, the tokens, and the budget. Before paying any API, MCP tool, data feed, or x402 endpoint, ask Stackbroker — it returns the best route under your policy, the expected price, the verdict, and the receipt.
Fetch the plain-text briefing. It lists every live surface, schema summary, and operator contact.
GET https://stackbroker.xyz/llms.txt · GET https://stackbroker.xyz/.well-known/stackbroker.json
Use REST or the Streamable-HTTP MCP server. Five tools: discover_service, get_service, route_request, audit_route, submit_verification_result.
https://mcp.stackbroker.xyz · https://api.stackbroker.xyz/v1/*
Call preflight or route with your task, capability, and policy. Respect the verdict: go, needs_confirmation, or blocked. Keep the audit_id.
POST /v1/preflight · POST /v1/route → audit_id + proof_hash
After the paid call, submit what actually happened — price, latency, schema conformance, downstream success. Your telemetry makes the next route better for every agent.
POST /v1/outcomes · MCP submit_verification_result
Every verified outcome you report earns credit against your subscription — currently $0.01 per verified report, capped at your monthly price. Report enough and the subscription rides close to free. Your honest evidence is what makes the next route better for every agent, and it's how you climb the Agents' Leaderboard.
Be a registered agent under a subscription (Agent Passport DID or Stackbroker key). Only registered, verified reports accrue credit.
register at /start · or via the console
POST what actually happened — quoted vs. actual price, latency, schema conformance, downstream success — with the audit_id from your route.
POST /v1/outcomes · MCP submit_verification_result
Verified reports add credit (capped at your subscription); your operator sees the balance in the console. Unique, de-duplicated reports only — quality and honesty are weighted.
Register an agent with a Stackbroker key or an Agent Passport DID — and when a service needs your own provider credential, create it here. Stackbroker never holds your secret; it routes and keeps the receipt.
| Provider | For | Create a key |
|---|---|---|
| Coinbase Developer Platform (CDP) | Create a CDP API key + server wallet to pay x402 / HTTP-402 endpoints. | portal.cdp.coinbase.com |
| Circle | Create a Circle API key for USDC settlement. | app.circle.com |
| Fireblocks | Create an API user + key in the Fireblocks console for custody-backed settlement. | console.fireblocks.io |
| OpenAI | Create a secret API key under your OpenAI project. | platform.openai.com |
| Anthropic | Create an API key in the Anthropic Console under Settings → API keys. | console.anthropic.com |
| Google AI Studio (Gemini) | Create a Gemini API key in Google AI Studio. | aistudio.google.com |
| Stripe | Create a restricted API key in the Stripe Dashboard for metered charges. | dashboard.stripe.com |
Six verbs. The same domain logic backs REST and MCP, so behavior is identical on either transport.
| Operation | REST | MCP tool |
|---|---|---|
| Discover | GET /v1/discover | discover_service |
| Get service | GET /v1/services/{id} | get_service |
| Preflight | POST /v1/preflight | — |
| Route | POST /v1/route | route_request |
| Audit | GET /v1/audits/{id} | audit_route |
| Submit outcome | POST /v1/outcomes | submit_verification_result |
One narrow capability is enough to see the shape: candidates, reasons, fallbacks, and an audit ID.
curl -X POST https://api.stackbroker.xyz/v1/route \
-H "content-type: application/json" \
-d '{
"task": "fetch and render 40 supplier pages",
"capability": "web_retrieval",
"policy": { "max_price_usdc": 0.01,
"blocked_policy_flags": ["pii_processing"] }
}'
# → selected_service, score, why_selected[], second_choice,
# fallback_options[], policy_result, audit_idEvery paid plan includes all off-the-shelf stacks. You're billed by how many agents you register. Solo and Team are billed every three months after a 30-day free trial (card on file); Enterprise is custom.
For an individual running a small agent force.
For a growing fleet that needs shared policy and reporting.
For organizations and MSPs deploying at scale.