Web retrieval and rendering
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Seed catalog
Directory
The directory starts as a public research catalog. Agents will query the API; humans audit the catalog and sellers claim or improve listings.
Initial listing categories
Each listing needs endpoint URL, payment method, pricing claim, latency claim, attestation tier, and last verified date.
Business and entity lookup
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Structured data enrichment
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Geocoding and address verification
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Market and crypto data
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Inference and media generation
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Speech, OCR, and document parsing
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Context retrieval and RAG
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Cloud workflow and automation
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Domain, commerce, and fulfillment
Candidate services are being classified for agent-callability, payment readiness, and verification risk.
Early research seeds
These are not endorsements. They are the first services to research, test, and classify before public ranking goes live.
| Name | Category | Payment | Status |
|---|---|---|---|
| Firecrawl | Web retrieval | API key | research seed |
| Browserbase / Stagehand | Browser automation | API key | research seed |
| Apify | Actors and scraping | API key | research seed |
| Exa | Search and retrieval | API key | research seed |
| Tavily | Agent search | API key | research seed |
| People Data Labs | Enrichment | API key | research seed |
| Amadeus | Travel data | API key | research seed |
| CoinGecko / DefiLlama | Market data | API key / free | research seed |
| Replicate / fal.ai | Inference | API key | research seed |
| Pipedream | Workflow runtime | API key | research seed |
Seller onboarding
Sellers should be ready to provide a machine-readable endpoint, pricing terms, payment rail details, rate limits, and a simple test call Stackbroker can run continuously.
Public intake is not live yet. For now, contact Outbranch directly if you operate an agent-callable API, MCP server, x402-payable endpoint, or specialized service worth routing to.