2s
The (most) everything API: 575+ pay-per-call endpoints for AI agents — ground-truth data, a full AI gateway, and agent infrastructure (storage, queues, watchers). USDC via x402, no signup, no API keys, and upto billing: pay actual usage, not the quote.
SearchLiveeip155:8453Exactvia cdp
Public-recordsIdentifiersAi-agentsUs-gov-datax402
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 28 snapshots so far.
$15.85
Verified settled volume
A floor: summed over 5,000 of 36,082 verified settlements.
$0.0027
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-21 13:36Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "PAYMENT-SIGNATURE required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
"amount": "2700",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "1",
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
"amount": "2700",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://2s.io/api/medical/npi",
"tags": [
"public-records",
"identifiers",
"ai-agents",
"us-gov-data",
"x402",
"upto-billing",
"ai-gateway",
"agent-infrastructure"
],
"iconUrl": "https://2s.io/icon-512.png",
"mimeType": "application/json",
"description": "Look up US healthcare providers in the CMS NPPES registry — the authoritative directory of National Provider Identifiers (NPIs). Give an exact 10-digit NPI, or search by provider last name (+ optional first name), or organization name, optionally narrowed by state and taxonomy/specialty. Returns each provider with NPI, entity type (individual vs organization), status, name/credential/gender or organization name, sole-proprietor flag, enumeration + last-updated dates, primary taxonomy, the full taxonomy list (code, description, primary flag, state license), and practice/mailing addresses with phone. Free, public-domain (CMS). The canonical \"who is this NPI / find this provider\" lookup for healthcare, claims, and credentialing agents.",
"serviceName": "2s"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"npi": "1679576722"
}
},
"output": {
"type": "json",
"schema": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"items": {
"type": "array",
"items": {
"type": "object",
"properties": {
"npi": {
"type": "string"
},
"gender": {},
"status": {
"type": "string"
},
"lastName": {},
"addresses": {
"type": "array",
"items": {
"type": "object",
"properties": {
"fax": {},
"city": {
"type": "string"
},
"state": {
"type": "string"
},
"purpose": {
"type": "string"
},
"address1": {
"type": "string"
},
"address2": {},
"telephone": {
"type": "string"
},
"postalCode": {
"type": "string"
},
"countryCode": {
"type": "string"
}
}
}
},
"firstName": {},
"credential": {},
"entityType": {
"type": "string"
},
"taxonomies": {
"type": "array",
"items": {
"type": "object",
"properties": {
"code": {
"type": "string"
},
"state": {
"type": "string"
},
"license": {
"type": "string"
},
"primary": {
"type": "boolean"
},
"description": {
"type": "string"
}
}
}
},
"lastUpdated": {
"type": "string"
},
"soleProprietor": {},
"enumerationDate": {
"type": "string"
},
"enumerationType": {
"type": "string"
},
"primaryTaxonomy": {
"type": "string"
},
"organizationName": {
"type": "string"
}
}
}
},
"total": {
"type": "integer"
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
}
}
}
},
"example": {
"ok": true,
"items": [
{
"npi": "1497887680",
"gender": null,
"status": "A",
"lastName": null,
"addresses": [
{
"fax": null,
"city": "Rochester",
"state": "MN",
"purpose": "LOCATION",
"address1": "200 1st St SW",
"address2": null,
"telephone": "507-284-2511",
"postalCode": "55905",
"countryCode": "US"
}
],
"firstName": null,
"credential": null,
"entityType": "Organization",
"taxonomies": [
{
"code": "282N00000X",
"state": "MN",
"license": "...",
"primary": true,
"description": "General Acute Care Hospital"
}
],
"lastUpdated": "2021-03-10",
"soleProprietor": null,
"enumerationDate": "2006-05-23",
"enumerationType": "NPI-2",
"primaryTaxonomy": "General Acute Care Hospital",
"organizationName": "MAYO CLINIC"
}
],
"total": 1,
"source": {
"url": "https://npiregistry.cms.gov/",
"license": "Public domain (US Government work). Queried live from the NPPES v2.1 API.",
"provider": "CMS — National Plan & Provider Enumeration System (NPPES)"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"const": "GET"
},
"queryParams": {
"properties": {
"npi": {
"type": "string",
"description": "Exact 10-digit NPI."
},
"limit": {
"type": "integer",
"description": "Max providers (1-50, default 10)."
},
"state": {
"type": "string",
"description": "2-letter state to narrow results."
},
"lastName": {
"type": "string",
"description": "Provider last name."
},
"taxonomy": {
"type": "string",
"description": "Taxonomy/specialty description, e.g. \"Cardiology\"."
},
"firstName": {
"type": "string",
"description": "Provider first name (with lastName)."
},
"organization": {
"type": "string",
"description": "Organization (NPI-2) name."
}
}
}
}
},
"output": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"items": {
"type": "array",
"items": {
"type": "object",
"properties": {
"npi": {
"type": "string"
},
"gender": {},
"status": {
"type": "string"
},
"lastName": {},
"addresses": {
"type": "array",
"items": {
"type": "object",
"properties": {
"fax": {},
"city": {
"type": "string"
},
"state": {
"type": "string"
},
"purpose": {
"type": "string"
},
"address1": {
"type": "string"
},
"address2": {},
"telephone": {
"type": "string"
},
"postalCode": {
"type": "string"
},
"countryCode": {
"type": "string"
}
}
}
},
"firstName": {},
"credential": {},
"entityType": {
"type": "string"
},
"taxonomies": {
"type": "array",
"items": {
"type": "object",
"properties": {
"code": {
"type": "string"
},
"state": {
"type": "string"
},
"license": {
"type": "string"
},
"primary": {
"type": "boolean"
},
"description": {
"type": "string"
}
}
}
},
"lastUpdated": {
"type": "string"
},
"soleProprietor": {},
"enumerationDate": {
"type": "string"
},
"enumerationType": {
"type": "string"
},
"primaryTaxonomy": {
"type": "string"
},
"organizationName": {
"type": "string"
}
}
}
},
"total": {
"type": "integer"
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.0027USDC≈ $0.0027 USD
on Base · exact scheme
Pay 0.0027 USDC on Base to 0x2b6D…C32C5. The signed payment is good for 1 minute.
- Paid to
- 0x2b6D…C32C5
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 2700 smallest units
2700units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- TW6nta…cyWhn
- Token contract
- EPjFWd…TDt1v
- Payment window
- 1 minute
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
"amount": "2700",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "1",
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
"amount": "2700",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"npi": "1679576722"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"const": "GET"
},
"queryParams": {
"properties": {
"npi": {
"type": "string",
"description": "Exact 10-digit NPI."
},
"limit": {
"type": "integer",
"description": "Max providers (1-50, default 10)."
},
"state": {
"type": "string",
"description": "2-letter state to narrow results."
},
"lastName": {
"type": "string",
"description": "Provider last name."
},
"taxonomy": {
"type": "string",
"description": "Taxonomy/specialty description, e.g. \"Cardiology\"."
},
"firstName": {
"type": "string",
"description": "Provider first name (with lastName)."
},
"organization": {
"type": "string",
"description": "Organization (NPI-2) name."
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-21 13:36Z
- Last indexed by Roundhouse
- 2026-09-20 13:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 10:15Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 28 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service 2s and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=2s' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://2s.io/api/medical/npi, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.