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x402stock Service Discovery Index
x402
x402stock Service Discovery Index is a paid API for AI agents from x402stock.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).
Returns an indexed catalog of all x402-compatible pay-per-call API services discovered by x402stock, including host metadata, pricing, categories, and endpoint counts
Price / call$0.02
Success—
StatusUnknown
How this service works
Pay-per-call market and economic data API for AI agents: US stocks, ETFs and options, forex, crypto and on-chain perps, energy commodities, US and global macro (Fed, CPI, jobs, GDP, Treasury, World Bank), SEC filings, congressional trades, and market sentiment. No API keys, no accounts. Pay per request in USDC via x402 on Base.
Output
A JSON object listing all x402-compatible service catalogs crawled by x402stock, including per-host metadata: hostname, number of free and paid endpoints, supported blockchain networks (e.g. Base), min/median/max price in USD, service categories, catalog URL, description, and last-updated timestamp. Also includes aggregate stats like total service count and an as_of timestamp.
Example use cases
Example prompt
“Show me all the x402 pay-per-call API services indexed by x402stock — I want to see which hosts are available, what categories they cover, how many endpoints they have, and their price ranges in USD.”
Technical details
Endpoint
GEThttps://x402stock.xyz/api/v1/x402/servicesWhen to prefer
Use this endpoint when an AI agent needs to programmatically discover what x402 pay-per-call services exist, their pricing tiers, and their capability categories — especially before deciding which downstream x402 endpoint to call. Prefer this over manual catalog browsing when building dynamic agent workflows that select APIs based on price or category.
Side effects
- Network timeout if x402stock.xyz is unreachable — returns no data
- Payment not received — x402 protocol returns 402 Payment Required if USDC payment on Base is not completed
- Invalid or missing properties filter may return unfiltered results or an error
- Stale data if crawl hasn't run recently — as_of field may be hours old
Input
{
"properties": ""
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
{
"up": 6,
"note": "Index of public /.well-known/x402 discovery catalogs, crawled by x402stock. Prices are the cheapest advertised accept, normalized to USD (6-decimal USDC).",
"as_of": "2026-06-12T04:55:54.438Z",
"count": 7,
"source": "x402stock",
"services": [
{
"ok": true,
"free": 2,
"host": "x402stock.xyz",
"paid": 125,
"error": null,
"networks": [
"eip155:8453"
],
"price_usd": {
"max": 0.75,
"min": 0.01,
"median": 0.02
},
"resources": 127,
"categories": [
"financial-data"
],
"catalog_url": "https://x402stock.xyz/.well-known/x402",
"description": null,
"last_updated": "2026-06-11T17:22:18.767Z",
"x402_version": 1
},
{
"ok": true,
"free": 0,
"host": "stableenrich.dev",
"paid": 0,
"error": null,
"networks": [],
"price_usd": {
"max": null,
"min": null,
"median": null
},
"resources": 38,
"categories": [],
"catalog_url": "https://stableenrich.dev/.well-known/x402",
"description": "Pay-per-request access to Apollo, Clado, Exa, Firecrawl, Google Maps, Serper, and Whitepages APIs. No auth, no subscriptions.",
"last_updated": null,
"x402_version": 1
},
{
"ok": false,
"free": 0,
"host": "stablesocial.dev",
"paid": 0,
"error": "HTTP 404",
"networks": [],
"price_usd": {
"max": null,
"min": null,
"median": null
},
"resources": 0,
"categories": [],
"catalog_url": "https://stablesocial.dev/.well-known/x402",
"description": null,
"last_updated": null,
"x402_version": null
},
{
"ok": true,
"free": 0,
"host": "stablestudio.dev",
"paid": 0,
"error": null,
"networks": [],
"price_usd": {
"max": null,
"min": null,
"median": null
},
"resources": 32,
"categories": [],
"catalog_url": "https://stablestudio.dev/.well-known/x402",
"description": "Pay-per-generation AI image and video creation. No subscriptions ever.",
"last_updated": null,
"x402_version": 1
},
{
"ok": true,
"free": 0,
"host": "stableupload.dev",
"paid": 0,
"error": null,
"networks": [],
"price_usd": {
"max": null,
"min": null,
"median": null
},
"resources": 10,
"categories": [],
"catalog_url": "https://stableupload.dev/.well-known/x402",
"description": "Pay-per-upload file hosting. Upload files, get a link.",
"last_updated": null,
"x402_version": 1
},
{
"ok": true,
"free": 0,
"host": "stableemail.dev",
"paid": 0,
"error": null,
"networks": [],
"price_usd": {
"max": null,
"min": null,
"median": null
},
"resources": 24,
"categories": [],
"catalog_url": "https://stableemail.dev/.well-known/x402",
"description": "Pay-per-send email delivery. No API keys, no accounts.",
"last_updated": null,
"x402_version": 1
},
{
"ok": true,
"free": 0,
"host": "stablemerch.dev",
"paid": 0,
"error": null,
"networks": [],
"price_usd": {
"max": null,
"min": null,
"median": null
},
"resources": 7,
"categories": [],
"catalog_url": "https://stablemerch.dev/.well-known/x402",
"description": "Custom merch API for making custom shirts, custom t-shirts, heavyweight shirts, and mugs from provided images. Agents create preview drafts, show mockups, then complete x402 or mpp checkout after approval. Supports optional referral commissions added on top of the base price.",
"last_updated": null,
"x402_version": 1
}
]
}Schema · Response
{
"type": "json",
"example": {
"up": 2,
"note": "Index of public /.well-known/x402 discovery catalogs, crawled by x402stock. Prices are the cheapest advertised accept, normalized to USD (6-decimal USDC).",
"as_of": "2026-06-08T13:02:11.000Z",
"count": 2,
"source": "x402stock",
"services": [
{
"ok": true,
"free": 0,
"host": "stableenrich.dev",
"paid": 18,
"error": null,
"networks": [
"eip155:8453"
],
"price_usd": {
"max": 0.25,
"min": 0.01,
"median": 0.05
},
"resources": 18,
"categories": [
"search",
"enrichment"
],
"catalog_url": "https://stableenrich.dev/.well-known/x402",
"description": "People/org search, web search, LinkedIn data, email enrichment",
"last_updated": "2026-06-08T11:40:02.000Z",
"x402_version": 2
},
{
"ok": true,
"free": 3,
"host": "x402stock.xyz",
"paid": 124,
"error": null,
"networks": [
"eip155:8453"
],
"price_usd": {
"max": 0.75,
"min": 0.01,
"median": 0.03
},
"resources": 127,
"categories": [
"financial-data"
],
"catalog_url": "https://x402stock.xyz/.well-known/x402",
"description": "Real-time US stock & market data for AI agents",
"last_updated": "2026-06-08T11:40:02.000Z",
"x402_version": 2
}
]
}
}Tags
x402
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