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.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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": "3600",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "1",
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
"amount": "3600",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://2s.io/api/fx/timeseries",
"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": "Historical daily exchange-rate series from the European Central Bank (via Frankfurter), with computed summary statistics. Pass base = 3-letter ISO 4217 currency (default USD), start = YYYY-MM-DD, optional end = YYYY-MM-DD (default = latest available), optional symbols = comma-separated target codes (default all), optional amount to scale rates (default 1). Range is capped at 366 days. Returns, per target currency, first/last/min/max/mean rate plus absolute and percentage change over the window, alongside the full daily series. ECB publishes on business days only; weekends and holidays are omitted.",
"serviceName": "2s"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"end": "2025-03-31",
"base": "USD",
"start": "2025-01-01",
"symbols": "EUR,GBP"
}
},
"output": {
"type": "json",
"schema": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"meta": {
"type": "object",
"properties": {
"end": {
"type": "string"
},
"base": {
"type": "string"
},
"start": {
"type": "string"
},
"amount": {
"type": "integer"
},
"series": {
"type": "object",
"properties": {
"2025-01-02": {
"type": "object",
"properties": {
"EUR": {
"type": "number"
},
"GBP": {
"type": "number"
}
}
}
}
},
"observations": {
"type": "integer"
}
}
},
"items": {
"type": "array",
"items": {
"type": "object",
"properties": {
"max": {
"type": "number"
},
"min": {
"type": "number"
},
"last": {
"type": "number"
},
"mean": {
"type": "number"
},
"count": {
"type": "integer"
},
"first": {
"type": "number"
},
"change": {
"type": "number"
},
"currency": {
"type": "string"
},
"pctChange": {
"type": "number"
}
}
}
},
"total": {
"type": "integer"
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
}
}
}
},
"example": {
"ok": true,
"meta": {
"end": "2025-03-31",
"base": "USD",
"start": "2025-01-01",
"amount": 1,
"series": {
"2025-01-02": {
"EUR": 0.9689,
"GBP": 0.80533
}
},
"observations": 62
},
"items": [
{
"max": 0.97,
"min": 0.91,
"last": 0.92,
"mean": 0.94,
"count": 62,
"first": 0.96256,
"change": -0.04256,
"currency": "EUR",
"pctChange": -4.42
},
{
"max": 0.81,
"min": 0.78,
"last": 0.785,
"mean": 0.79,
"count": 62,
"first": 0.79813,
"change": -0.01313,
"currency": "GBP",
"pctChange": -1.65
}
],
"total": 2,
"source": {
"url": "https://frankfurter.dev/",
"license": "ECB reference rates — free for public use with attribution.",
"provider": "Frankfurter — daily reference rates from the European Central Bank"
}
}
}
},
"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": {
"required": [
"start"
],
"properties": {
"end": {
"type": "string",
"description": "Inclusive end date YYYY-MM-DD; default latest."
},
"base": {
"type": "string",
"description": "3-letter ISO 4217 code (default USD)."
},
"start": {
"type": "string",
"description": "Inclusive start date YYYY-MM-DD."
},
"amount": {
"type": "number",
"description": "Amount of base currency to scale rates; default 1."
},
"symbols": {
"type": "string",
"description": "Comma-separated target codes; default all."
}
}
}
}
},
"output": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"meta": {
"type": "object",
"properties": {
"end": {
"type": "string"
},
"base": {
"type": "string"
},
"start": {
"type": "string"
},
"amount": {
"type": "integer"
},
"series": {
"type": "object",
"properties": {
"2025-01-02": {
"type": "object",
"properties": {
"EUR": {
"type": "number"
},
"GBP": {
"type": "number"
}
}
}
}
},
"observations": {
"type": "integer"
}
}
},
"items": {
"type": "array",
"items": {
"type": "object",
"properties": {
"max": {
"type": "number"
},
"min": {
"type": "number"
},
"last": {
"type": "number"
},
"mean": {
"type": "number"
},
"count": {
"type": "integer"
},
"first": {
"type": "number"
},
"change": {
"type": "number"
},
"currency": {
"type": "string"
},
"pctChange": {
"type": "number"
}
}
}
},
"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.
Pay 0.00144 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
- 1440 smallest units
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": "1440",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "1",
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
"amount": "1440",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"end": "2025-03-31",
"base": "USD",
"start": "2025-01-01",
"symbols": "EUR,GBP"
}
},
"output": {
"type": "json",
"schema": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"meta": {
"type": "object",
"properties": {
"end": {
"type": "string"
},
"base": {
"type": "string"
},
"start": {
"type": "string"
},
"amount": {
"type": "integer"
},
"series": {
"type": "object",
"properties": {
"2025-01-02": {
"type": "object",
"properties": {
"EUR": {
"type": "number"
},
"GBP": {
"type": "number"
}
}
}
}
},
"observations": {
"type": "integer"
}
}
},
"items": {
"type": "array",
"items": {
"type": "object",
"properties": {
"max": {
"type": "number"
},
"min": {
"type": "number"
},
"last": {
"type": "number"
},
"mean": {
"type": "number"
},
"count": {
"type": "integer"
},
"first": {
"type": "number"
},
"change": {
"type": "number"
},
"currency": {
"type": "string"
},
"pctChange": {
"type": "number"
}
}
}
},
"total": {
"type": "integer"
},
"source": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
}
}
}
},
"example": {
"ok": true,
"meta": {
"end": "2025-03-31",
"base": "USD",
"start": "2025-01-01",
"amount": 1,
"series": {
"2025-01-02": {
"EUR": 0.9689,
"GBP": 0.80533
}
},
"observations": 62
},
"items": [
{
"max": 0.97,
"min": 0.91,
"last": 0.92,
"mean": 0.94,
"count": 62,
"first": 0.96256,
"change": -0.04256,
"currency": "EUR",
"pctChange": -4.42
},
{
"max": 0.81,
"min": 0.78,
"last": 0.785,
"mean": 0.79,
"count": 62,
"first": 0.79813,
"change": -0.01313,
"currency": "GBP",
"pctChange": -1.65
}
],
"total": 2,
"source": {
"url": "https://frankfurter.dev/",
"license": "ECB reference rates — free for public use with attribution.",
"provider": "Frankfurter — daily reference rates from the European Central Bank"
}
}
}
},
"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": {
"required": [
"start"
],
"properties": {
"end": {
"type": "string",
"description": "Inclusive end date YYYY-MM-DD; default latest."
},
"base": {
"type": "string",
"description": "3-letter ISO 4217 code (default USD)."
},
"start": {
"type": "string",
"description": "Inclusive start date YYYY-MM-DD."
},
"amount": {
"type": "number",
"description": "Amount of base currency to scale rates; default 1."
},
"symbols": {
"type": "string",
"description": "Comma-separated target codes; default all."
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-06-17 21:39Z
- Last indexed by Roundhouse
- 2026-07-17 19:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 21:15Z
- 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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. 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/fx/timeseries, 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.