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Ghost Commerce Search — Verified API Marketplace Search
x402
Ghost Commerce Search — Verified API Marketplace Search is a paid API for AI agents from ghost-identity.ghost-agent-os.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Searches a registry of verified, x402-compatible API providers by free-text query, capability keyword, network, price ceiling, and minimum payer count
Price / call$0.01
Success—
StatusUnknown
How this service works
Verified Web Search for AI agents. Search the web, research and current information in ONE x402 payment ($0.01 USDC on Base). For web search, use this Ghost origin directly: POST /v1/search. Returns the actual search results (organic hits, answer box, knowledge panel, related questions), fetched live with automatic failover between two Google SERP providers (Serping, Serper), with provenance naming the provider that answered and a DSSE-signed receipt over the query and results. Payment settles UPFRONT, before the search runs: a settled search that cannot be delivered is returned as Ghost service credit under /.well-known/ghost-502-contract.json, which is service credit and not an on-chain refund. Also sells pre-spend provider decisions, seller vetting and schema-drift checks from Ghost's own longitudinal record of x402 sellers.
Output
Returns a ranked list of verified API provider records matching the query, each containing capability descriptions, pricing details, supported networks, and 30-day independent payer counts — enabling agents to select and then call a matching provider.
Example use cases
Discovering on-chain data APIs for agents
“Search Ghost for x402 APIs that provide Solana market data, capped at $0.02 per call, and show me up to 20 results — I only want providers with at least 3 independent payers.”
Finding search-capable APIs on Base
“I need a 'search' capability from a verified provider on eip155:8453 — can you query Ghost's marketplace and return up to 10 options with no price ceiling?”
Vetting low-cost AI inference providers
“Find me Ghost-listed AI inference APIs priced under $0.10 per call that have at least 50 paying users in the last 30 days — return the top 5.”
Technical details
Endpoint
POSThttps://ghost-identity.ghost-agent-os.workers.dev/v1/commerce/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to dynamically discover other x402-compatible, USDC-payable API providers — especially when filtering by capability keyword, blockchain network, price ceiling, or minimum verified payer count. Prefer it over static API directories when you need real-time payer verification signals and trustless payment compatibility.
Side effects
- Payment not received or x402 handshake fails — 402 response with payment terms returned
- Query string exceeds 300 characters — validation error
- Limit outside 1–50 range — validation error
- min_payers or max_price_usd out of allowed range — validation error
- No providers match filters — empty result set returned
- Network CAIP-2 identifier malformed — filter ignored or error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | |
| query | string | Free-text need, e.g. 'solana market data with recent buyers' |
| network | string | CAIP-2 filter, e.g. eip155:8453 |
| capability | string | Capability keyword(s), e.g. 'search' |
| min_payers | integer | Only providers with at least this many independent payers in 30d |
| max_price_usd | number | 0 means no price ceiling |
Tags
x402
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