curvecall.onrender.com
Pay-per-call market math and token intel for AI agents. Quote, risk, deployer history and bundle signals over x402. USDC on Base or Solana, or shielded ZEC.
SearchLiveeip155:8453Exactvia facilitator:payAI
Settlements · 30d
19
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$0.29
Verified settled volume
38 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x21ef7f9c9546915624ea6852bed4a5b3e48831b0The 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 header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x21ef7f9c9546915624ea6852bed4a5b3e48831b0",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": {
"type": "string",
"required": true,
"description": "Token name, symbol or address to search"
},
"chain": {
"type": "string",
"required": false,
"description": "Optional chain filter, e.g. base, solana"
},
"limit": {
"type": "integer",
"default": 10,
"maximum": 25,
"required": false
}
}
},
"output": {
"example": {
"chain": null,
"count": 10,
"query": "pepe",
"source": "dexscreener search",
"results": [
{
"url": "https://dexscreener.com/base/0x...",
"chain": "base",
"symbol": "PEPE",
"address": "0x...",
"top_dex": "uniswap",
"price_usd": 0.00001,
"liquidity_usd": 250000
}
]
}
}
},
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"payTo": "DTdGKbbSnnaD7CFMELxJPXx981Gc8k6b8ND6NXBgnfW3",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": {
"type": "string",
"required": true,
"description": "Token name, symbol or address to search"
},
"chain": {
"type": "string",
"required": false,
"description": "Optional chain filter, e.g. base, solana"
},
"limit": {
"type": "integer",
"default": 10,
"maximum": 25,
"required": false
}
}
},
"output": {
"example": {
"chain": null,
"count": 10,
"query": "pepe",
"source": "dexscreener search",
"results": [
{
"url": "https://dexscreener.com/base/0x...",
"chain": "base",
"symbol": "PEPE",
"address": "0x...",
"top_dex": "uniswap",
"price_usd": 0.00001,
"liquidity_usd": 250000
}
]
}
}
},
"maxTimeoutSeconds": 60
},
{
"asset": "ZEC",
"extra": {
"curveCallQuote": {
"usd": "0.005",
"expires": 1790889622,
"signature": "8c157c2baa6007b1d868a90d6d7138e75f3f0e00cea94953bfc753f93244932e"
}
},
"payTo": "u12aqzh5mc270u33zhz6xjah4cl4zmc6g2rfzxxv8ywaxzxt50j975v38x3dsakw7e7wfkg657s2p8rv6ne4p6njlw68tlwws2aunumuc5",
"amount": "376",
"scheme": "exact",
"network": "zcash:mainnet",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://curvecall.onrender.com/v1/search",
"mimeType": "application/json",
"description": "Token search"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": {
"type": "string",
"required": true,
"description": "Token name, symbol or address to search"
},
"chain": {
"type": "string",
"required": false,
"description": "Optional chain filter, e.g. base, solana"
},
"limit": {
"type": "integer",
"default": 10,
"maximum": 25,
"required": false
}
}
},
"output": {
"type": "json",
"example": {
"chain": null,
"count": 10,
"query": "pepe",
"source": "dexscreener search",
"results": [
{
"url": "https://dexscreener.com/base/0x...",
"chain": "base",
"symbol": "PEPE",
"address": "0x...",
"top_dex": "uniswap",
"price_usd": 0.00001,
"liquidity_usd": 250000
}
]
}
}
},
"schema": {
"type": "object",
"properties": {
"input": {
"type": "object",
"properties": {
"queryParams": {
"q": {
"type": "string",
"required": true,
"description": "Token name, symbol or address to search"
},
"chain": {
"type": "string",
"required": false,
"description": "Optional chain filter, e.g. base, solana"
},
"limit": {
"type": "integer",
"default": 10,
"maximum": 25,
"required": false
}
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"chain": null,
"count": 10,
"query": "pepe",
"source": "dexscreener search",
"results": [
{
"url": "https://dexscreener.com/base/0x...",
"chain": "base",
"symbol": "PEPE",
"address": "0x...",
"top_dex": "uniswap",
"price_usd": 0.00001,
"liquidity_usd": 250000
}
]
}
}
}
}
}
}
},
"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.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0x21ef…831b0. The signed payment is good for 1 minute.
- Paid to
- 0x21ef…831b0
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x21ef7f9c9546915624ea6852bed4a5b3e48831b0",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": {
"type": "string",
"required": true,
"description": "Token name, symbol or address to search"
},
"chain": {
"type": "string",
"required": false,
"description": "Optional chain filter, e.g. base, solana"
},
"limit": {
"type": "integer",
"default": 10,
"maximum": 25,
"required": false
}
}
},
"output": {
"type": "json",
"example": {
"chain": null,
"count": 10,
"query": "pepe",
"source": "dexscreener search",
"results": [
{
"url": "https://dexscreener.com/base/0x...",
"chain": "base",
"symbol": "PEPE",
"address": "0x...",
"top_dex": "uniswap",
"price_usd": 0.00001,
"liquidity_usd": 250000
}
]
}
}
},
"schema": {
"type": "object",
"properties": {
"input": {
"type": "object",
"properties": {
"queryParams": {
"q": {
"type": "string",
"required": true,
"description": "Token name, symbol or address to search"
},
"chain": {
"type": "string",
"required": false,
"description": "Optional chain filter, e.g. base, solana"
},
"limit": {
"type": "integer",
"default": 10,
"maximum": 25,
"required": false
}
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"chain": null,
"count": 10,
"query": "pepe",
"source": "dexscreener search",
"results": [
{
"url": "https://dexscreener.com/base/0x...",
"chain": "base",
"symbol": "PEPE",
"address": "0x...",
"top_dex": "uniswap",
"price_usd": 0.00001,
"liquidity_usd": 250000
}
]
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-01 18:05Z
- Last indexed by Roundhouse
- 2026-10-26 16:46Z
- Last enriched (probe, favicon, geo)
- 2026-10-01 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 curvecall.onrender.com 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=curvecall.onrender.com' 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://curvecall.onrender.com/v1/search, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.