simple-x-api.com
Proxy the corresponding X API v2 endpoint. x402 authorizes up to $10.00; successful responses settle at X's public non-owned per-resource/per-action price.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 10 USDC on Base to 0xee83…58b7e. The signed payment is good for 5 minutes.
- Paid to
- 0xee83…58b7e
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"facilitatorAddress": "0x68A96F41ff1e9F2E7b591A931A4AD224e7C07863",
"assetTransferMethod": "permit2"
},
"payTo": "0xee83504F7f51e43e87bf97CdBd8C775abE858b7e",
"amount": "10000000",
"scheme": "upto",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
}
}
}
},
"eip2612GasSponsoring": {
"info": {
"version": "1",
"description": "The facilitator accepts EIP-2612 gasless Permit to `Permit2` canonical contract."
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"from",
"asset",
"spender",
"amount",
"nonce",
"deadline",
"signature",
"version"
],
"properties": {
"from": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the sender."
},
"asset": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the ERC-20 token contract."
},
"nonce": {
"type": "string",
"pattern": "^[0-9]+$",
"description": "The current nonce of the sender."
},
"amount": {
"type": "string",
"pattern": "^[0-9]+$",
"description": "The amount to approve (uint256). Typically MaxUint."
},
"spender": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "The address of the spender (Canonical Permit2)."
},
"version": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)*$",
"description": "Schema version identifier."
},
"deadline": {
"type": "string",
"pattern": "^[0-9]+$",
"description": "The timestamp at which the signature expires."
},
"signature": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$",
"description": "The 65-byte concatenated signature (r, s, v) as a hex string."
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-06-09 16:34Z
- Last indexed by Roundhouse
- 2026-07-09 15:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-13 20:45Z
- x402 version
- 2
- Max timeout
- 300s
- 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
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service simple-x-api.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=simple-x-api.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://simple-x-api.com/api/2/users/by/username/DavidPawlan, 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.