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x402 API Finder
x402
x402 API Finder is a paid API for AI agents from 1gateway.dev, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-30).
Searches and ranks paid x402 micropayment APIs by task description, returning scored endpoints with pricing, demand metrics, and quality flags
Price / call$0.009
Success—
StatusUnknown
How this service works
Use when an agent must pick a paid x402 API for a task. Input: q (task in plain words or keywords), optional max_price (USD), network (base, solana or CAIP-2), limit (1-20). Output: JSON ranked endpoints: resource URL, method, description, price, networks, seller, 30-day payers and calls (Bazaar), seller buyers (x402scan), wash/quality flags, score, index as_of. Same rules for every seller. Example: ?q=base+token+honeypot+check&max_price=0.02
Output
A JSON object with ranked x402 API endpoints matching the query, each including: resource URL, HTTP method, description, price in USD, supported networks, seller host and pay-to address, 30-day payer and call counts from Bazaar, seller buyer counts from x402scan, wash/quality flags (few_payers, inactive_14d, scanner_like, trivial_route, uniform_payers), relevance score, and index metadata (total routes, sellers, crawl timestamps, version).
Example use cases
Picking cheapest x402 API for PDF conversion
“Search for x402 APIs that convert PDF to Markdown and show me the top 5 options priced under $0.05 per call, ranked by quality and demand.”
Discovering x402 APIs for crypto data on Solana
“I need to find the best x402 API for fetching Solana token prices — show me up to 8 results on the Solana network and flag any that look suspicious.”
Building an agent that auto-selects paid APIs
“My agent needs to dynamically pick a paid x402 API for EVM wallet balance lookups on Base — give me the top 3 options under $0.01 so I can wire up the cheapest one automatically.”
Technical details
Endpoint
GEThttps://1gateway.dev/v1/x402/recommend?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to dynamically discover and select a paid x402 micropayment API for a specific task at runtime. It is the right choice when you want demand-validated rankings (real 30-day payer and call counts), quality flags to filter out wash trading or probes, price caps to stay within budget, and network-specific filtering. Prefer this over manual API directories when building autonomous agents that must self-select tools.
Side effects
- No results returned if query terms match zero indexed routes above the 30% relevance threshold
- max_price filter too restrictive may return empty results
- network filter for uncommon chains may match no endpoints
- Index may be stale if crawl timestamps are old
- Flagged routes still appear by default unless include_flagged=false is set
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-10-18",
"index": {
"routes": 1989,
"sellers": 693,
"version": "test-20261018",
"inclusion": "mainnet USDC-priced routes with >= 3 distinct payers in 30 days (Bazaar quality data)",
"bazaar_crawled_at": "2026-10-18T06:29:58.318Z",
"x402scan_crawled_at": "2026-10-18T06:32:25.178Z",
"bazaar_resources_crawled": 46270,
"x402scan_sellers_crawled": 1445
},
"query": {
"q": "base token honeypot check",
"limit": 3,
"terms": [
"base"
],
"network": null,
"max_price": 0.02,
"include_flagged": true
},
"ranking": "BM25 text relevance on service name, tags, path and description (only routes reaching 30% of the best match), x query-word coverage, x capped demand (log 30-da…",
"results": [
{
"rank": 1,
"tags": [
"honeypot"
],
"flags": [
"few_payers"
],
"score": 1.2614,
"demand": {
"bazaar_last_called": "2026-10-16",
"bazaar_route_calls_30d": 4,
"x402scan_seller_tx_30d": 1661,
"bazaar_route_payers_30d": 4,
"x402scan_seller_buyers_30d": 53,
"x402scan_seller_volume_usd_30d": 235
},
"method": "GET",
"seller": {
"host": "onchainpulse.theaslangroupllc.com",
"pay_to": "0x50ab2018c06c6e4eaa9ba52057eb55ed284912fc"
},
"networks": [
"eip155:137"
],
"resource": "https://onchainpulse.theaslangroupllc.com/api/evmtoken",
"price_usd": 0.015,
"text_match": 1,
"description": "Honeypot, rug & token-safety scanner for Robinhood Chain, Base & EVM tokens — instant pre-trade check: sell-simulation honeypot, buy/sell tax, mint, upgradeabl…",
"service_name": "OnchainPulse",
"matched_terms": [
"base"
]
}
],
"sources": "CDP Bazaar discovery API (routes, prices, 30-day payers/calls); x402scan.com seller stats (30-day buyers, tx, volume). Heuristic flags; not an endorsement. Ver…",
"matched_total": 112,
"flag_definitions": {
"few_payers": "fewer than 5 distinct payers in 30 days",
"inactive_14d": "not called in the 14 days before the crawl",
"scanner_like": ">= 10 payers but < 1.3 calls per payer (probes / one-shot scanners)",
"trivial_route": "ping/time/uuid-style route",
"uniform_payers": ">= 5 routes of one host with the identical payer count (test harness or wash cluster suspected)",
"thin_description": "description under 25 characters"
},
"operator_disclosure": "The operator of this API (1gateway.dev) also sells x402 APIs. They are in this index only if they meet the same inclusion rule and are ranked by the same formu…"
}
}Tags
x402
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