Saylor Innovations On-Chain Data
Optimism wallet balance - native ETH plus up to 20 ERC-20 token balances in one call
The wallet the 402 directs payment to. Its full payment record is on the merchant page.
Asset EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
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.
Recent payments · which agents last used it
Every indexed settlement paid to this service’s wallet, newest first. The index does not record which endpoint a payment was for, so if this wallet serves more than one endpoint, the rows include payments for the others. Paged up to the newest 5,000; the full history is on the merchant page.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying: a price here is a claim, not a quote.
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
- 7LSjfr…Xacy7
- Token contract
- EPjFWd…TDt1v
- Payment window
- 2 minutes
The catalog’s raw entry
[
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"memo": "saylor:evm:balance:optimism/bala",
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"tokens": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85"
}
},
"output": {
"type": "json",
"example": {
"block": 51738756,
"chain": "base",
"native": {
"raw": "1234500000000000000",
"symbol": "ETH",
"balance": "1.2345"
},
"tokens": [
{
"raw": "250500000",
"symbol": "USDC",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"balance": "250.5",
"decimals": 6
}
],
"wallet": "0x4200000000000000000000000000000000000006"
}
}
},
"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",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"tokens": {
"type": "string",
"description": "optional comma-separated ERC-20 addresses, up to 20"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"chain",
"wallet",
"native",
"tokens"
],
"properties": {
"block": {
"type": [
"number",
"null"
],
"description": "Block number the data was read at"
},
"chain": {
"type": "string",
"description": "Blockchain the data is for"
},
"native": {
"type": "object",
"description": "Native-token balance details"
},
"tokens": {
"type": "array",
"description": "Token balances or token records"
},
"wallet": {
"type": "string",
"description": "Wallet address queried"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-13 07:10Z
- Last indexed by Roundhouse
- 2026-11-10 10:45Z
- Last enriched (probe, favicon, geo)
- –
- x402 version
- 2
- Max timeout
- 120s
- Liveness probe
- Not probed
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 Saylor Innovations On-Chain Data 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=Saylor%20Innovations%20On-Chain%20Data' 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://saylorinnovations.com/api/evm/optimism/balance/0x4200000000000000000000000000000000000006, 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.