Saylor Innovations Data Desk
Which of 16 EVM chains an address has contract code on, with a bytecode hash match to spot true multichain deployments versus look-alikes.
DataLiveeip155:8453Exactvia cdp
Contract chains deployedSame address across chainsMultichain contract checkCreate2 deployment verifyBytecode match all chains
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 6 snapshots so far.
$15.76
Verified settled volume
1,657 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-22 18:01Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aaThe 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 required to access this resource.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"name": "USD Coin",
"note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"name": "USD Coin",
"note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjaGFpbi1kZXBsb3llZC1vbiIsInJlZmVyZW5jZSI6IjZYMVBoVUZuTFJzc1RIaFFWbjl3Y2hSREt6aTJEMUJHb240ZFFYSjFOZjRKIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI1NTgwNjA0NjF9.R968bGBCfnnP82IzTlXcL-E-kgDv1WByUcr6CYiMNOU",
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"reference": "6X1PhUFnLRssTHhQVn9wchRDKzi2D1BGon4dQXJ1Nf4J"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjaGFpbi1kZXBsb3llZC1vbiIsInJlZmVyZW5jZSI6Ijd0d2gyakdWMWs0WG5QbWc4cVliTWZ4VVdiZFNjVm5ZSnQ1c2VYVzh0ODNOIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI1NTgwNjA0NjF9.RxeMdS2RSiBK4cNFM73_Kh8RbKm2uzyJm-roIL6CFjw",
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"reference": "7twh2jGV1k4XnPmg8qYbMfxUWbdScVnYJt5seXW8t83N"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"native": true,
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjaGFpbi1kZXBsb3llZC1vbiIsInJlZmVyZW5jZSI6IkJpUEVvN0tSMWhlMjlSOHVNMmN6WjNabm5YckNlMlZzN3RYUlNScUNmZFBOIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkxODEyLCJleHAiOjE3OTI1NTgwNjA0NjF9.ed1tHAw4lLyJWND2kgqnrbBhW7p0g2u2iJZL9P6g-k8",
"reference": "BiPEo7KR1he29R8uM2czZ3ZnnXrCe2Vs7tXRSRqCfdPN",
"solUsdPrice": 105.65,
"quotedLamports": "94652"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "91812",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://saylorinnovations.com/api/chain/deployed-on?address=0xcA11bde05977b3631167028862bE2a173976CA11",
"tags": [
"contract chains deployed",
"same address across chains",
"multichain contract check",
"create2 deployment verify",
"bytecode match all chains"
],
"iconUrl": "https://saylorinnovations.com/og-image.jpg",
"mimeType": "application/json",
"description": "Which of 16 EVM chains an address has contract code on, with a bytecode hash match to spot true multichain deployments versus look-alikes.",
"serviceName": "Saylor Innovations Data Desk"
},
"extensions": {
"tags": [
"contract chains deployed",
"same address across chains",
"multichain contract check",
"create2 deployment verify",
"bytecode match all chains"
],
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0xcA11bde05977b3631167028862bE2a173976CA11"
}
},
"output": {
"type": "json",
"example": {
"note": "Chains where deployed bytecode exists at this address. The same address with identical bytecode on several chains usually means a deterministic (CREATE2) deployment; same address with different bytec…",
"source": "Chain JSON-RPC (16 EVM chains)",
"address": "0xcA11bde05977b3631167028862bE2a173976CA11",
"results": [
{
"ms": 292,
"ok": true,
"chain": "ethereum",
"chain_id": 1,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 286,
"ok": true,
"chain": "base",
"chain_id": 8453,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 297,
"ok": true,
"chain": "arbitrum",
"chain_id": 42161,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
}
],
"elapsed_ms": 308,
"deployed_on": [
"ethereum",
"base",
"arbitrum"
],
"chains_queried": 16,
"deployed_count": 16,
"chains_answered": 16,
"distinct_bytecodes": 2,
"identical_bytecode_everywhere": false
}
}
},
"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"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "the contract address to look for on every chain"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"address",
"chains_queried",
"deployed_on",
"deployed_count",
"identical_bytecode_everywhere",
"results",
"note",
"source"
],
"properties": {
"note": {
"type": "string",
"description": "plain-language reading of the result"
},
"source": {
"type": "string",
"description": "where the data was read from or how it was computed"
},
"address": {
"type": "string",
"description": "the address queried"
},
"results": {
"type": [
"array",
"null"
],
"items": {
"type": "object",
"properties": {
"ok": {
"type": [
"boolean",
"null"
],
"description": "false when the chain did not answer"
},
"chain": {
"type": [
"string",
"null"
],
"description": "chain name"
},
"has_code": {
"type": [
"boolean",
"null"
],
"description": "true when contract code exists"
},
"code_hash": {
"type": [
"string",
"null"
],
"description": "start of the keccak256 of the code"
},
"code_size_bytes": {
"type": [
"number",
"null"
],
"description": "deployed code size"
},
"eip7702_delegated": {
"type": [
"boolean",
"null"
],
"description": "true for an EIP-7702 delegated account"
}
}
},
"description": "one entry per chain"
},
"elapsed_ms": {
"type": "number",
"description": "total time for all chains"
},
"deployed_on": {
"type": [
"array",
"null"
],
"description": "chains with contract code at the address"
},
"chains_queried": {
"type": "number",
"description": "chains asked"
},
"deployed_count": {
"type": "number",
"description": "how many chains"
},
"chains_answered": {
"type": "number",
"description": "chains that answered"
},
"distinct_bytecodes": {
"type": "number",
"description": "number of different bytecodes found"
},
"identical_bytecode_everywhere": {
"type": "boolean",
"description": "true when all deployments share one bytecode"
}
}
}
}
}
}
}
},
"method": "GET",
"example": {
"note": "Chains where deployed bytecode exists at this address. The same address with identical bytecode on several chains usually means a deterministic (CREATE2) deployment; same address with different bytecode means two different contracts, so check each before trusting it.",
"source": "Chain JSON-RPC (16 EVM chains)",
"address": "0xcA11bde05977b3631167028862bE2a173976CA11",
"results": [
{
"ms": 292,
"ok": true,
"chain": "ethereum",
"chain_id": 1,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 286,
"ok": true,
"chain": "base",
"chain_id": 8453,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 297,
"ok": true,
"chain": "arbitrum",
"chain_id": 42161,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 287,
"ok": true,
"chain": "optimism",
"chain_id": 10,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 299,
"ok": true,
"chain": "polygon",
"chain_id": 137,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 275,
"ok": true,
"chain": "bsc",
"chain_id": 56,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 298,
"ok": true,
"chain": "avalanche",
"chain_id": 43114,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 303,
"ok": true,
"chain": "gnosis",
"chain_id": 100,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 302,
"ok": true,
"chain": "linea",
"chain_id": 59144,
"has_code": true,
"code_hash": "0x8ec8aa5d07a37e47...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 301,
"ok": true,
"chain": "scroll",
"chain_id": 534352,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 300,
"ok": true,
"chain": "mantle",
"chain_id": 5000,
"has_code": true,
"code_hash": "0x8ec8aa5d07a37e47...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 293,
"ok": true,
"chain": "blast",
"chain_id": 81457,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 298,
"ok": true,
"chain": "sonic",
"chain_id": 146,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 301,
"ok": true,
"chain": "celo",
"chain_id": 42220,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 301,
"ok": true,
"chain": "berachain",
"chain_id": 80094,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 299,
"ok": true,
"chain": "unichain",
"chain_id": 130,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
}
],
"elapsed_ms": 308,
"deployed_on": [
"ethereum",
"base",
"arbitrum",
"optimism",
"polygon",
"bsc",
"avalanche",
"gnosis",
"linea",
"scroll",
"mantle",
"blast",
"sonic",
"celo",
"berachain",
"unichain"
],
"chains_queried": 16,
"deployed_count": 16,
"chains_answered": 16,
"distinct_bytecodes": 2,
"identical_bytecode_everywhere": false
},
"license": "LicenseRef-Saylor-Agent-Use-1.0",
"mimeType": "application/json",
"freshness": "fetched live (cached up to 1 hour for large reference files)",
"tokenCount": null,
"inputSchema": {
"address": "the contract address to look for on every chain"
},
"serviceName": "Saylor Innovations Data Desk",
"instructions": "STANDARD PATH (works with stock x402 clients): send payload.transaction — a base64 partially-signed Solana transaction — and we route verify/settle through an x402 facilitator that sponsors the fee and submits it. Include the chosen accepts entry as \"accepted\" so we can match terms. ALTERNATIVE PATH (no facilitator): Pick ONE entry from accepts and use the reference and session from THAT entry — each asset has its own. USDC or USDT: send an SPL transfer of the exact amount. Native SOL (asset=So11111111111111111111111111111111111111112, extra.native=true): send that many lamports with a system transfer. Either way include extra.reference as a read-only account (Solana Pay style), then retry with PAYMENT-SIGNATURE: base64({x402Version:2, payload:{session, reference}}). If your client cannot attach a reference, send payload.signature instead (USDC only). SOL amounts are quoted live and expire in 120s; stablecoins do not move. The facilitator path verifies and settles in this request. Only the alternative self-submitted Solana path needs retries while the transfer is indexed (typically 3-4 attempts over 10-20s). On that path, a 402 saying \"payment not found on-chain yet\" means keep retrying.",
"outputSchema": {
"type": "object",
"required": [
"address",
"chains_queried",
"deployed_on",
"deployed_count",
"identical_bytecode_everywhere",
"results",
"note",
"source"
],
"properties": {
"note": {
"type": "string",
"description": "plain-language reading of the result"
},
"source": {
"type": "string",
"description": "where the data was read from or how it was computed"
},
"address": {
"type": "string",
"description": "the address queried"
},
"results": {
"type": [
"array",
"null"
],
"items": {
"type": "object",
"properties": {
"ok": {
"type": [
"boolean",
"null"
],
"description": "false when the chain did not answer"
},
"chain": {
"type": [
"string",
"null"
],
"description": "chain name"
},
"has_code": {
"type": [
"boolean",
"null"
],
"description": "true when contract code exists"
},
"code_hash": {
"type": [
"string",
"null"
],
"description": "start of the keccak256 of the code"
},
"code_size_bytes": {
"type": [
"number",
"null"
],
"description": "deployed code size"
},
"eip7702_delegated": {
"type": [
"boolean",
"null"
],
"description": "true for an EIP-7702 delegated account"
}
}
},
"description": "one entry per chain"
},
"elapsed_ms": {
"type": "number",
"description": "total time for all chains"
},
"deployed_on": {
"type": [
"array",
"null"
],
"description": "chains with contract code at the address"
},
"chains_queried": {
"type": "number",
"description": "chains asked"
},
"deployed_count": {
"type": "number",
"description": "how many chains"
},
"chains_answered": {
"type": "number",
"description": "chains that answered"
},
"distinct_bytecodes": {
"type": "number",
"description": "number of different bytecodes found"
},
"identical_bytecode_everywhere": {
"type": "boolean",
"description": "true when all deployments share one bytecode"
}
}
},
"noPathTemplate": true,
"settlementModes": [
"facilitator-transaction",
"self-submitted-reference"
],
"typicalLatencyMs": 700
},
"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.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0xA2A8…fc8aa. The signed payment is good for 2 minutes.
- Paid to
- 0xA2A8…fc8aa
- USD Coin contract
- 0x8335…02913
- Payment window
- 2 minutes
- As published
- 10000 smallest units
10000units
on Polygon · 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
- 0xA2A8…fc8aa
- Token contract
- 0x3c49…c3359
- Payment window
- 2 minutes
10000units
on Arbitrum · 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
- 0xA2A8…fc8aa
- Token contract
- 0xaf88…e5831
- Payment window
- 2 minutes
10000units
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
- 7LSjfr…Xacy7
- Token contract
- EPjFWd…TDt1v
- Payment window
- 2 minutes
10000units
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
- 7LSjfr…Xacy7
- Token contract
- Es9vMF…nwNYB
- Payment window
- 2 minutes
93755units
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
- 7LSjfr…Xacy7
- Token contract
- So1111…11112
- Payment window
- 2 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"name": "USD Coin",
"note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"name": "USD Coin",
"note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjaGFpbi1kZXBsb3llZC1vbiIsInJlZmVyZW5jZSI6IkJ1SFFnSENBejJTa015Vzh4dGNrRHBqWVhFY3I1RDNabTlkR0Z6THo2ejViIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI2OTIxODkxNTB9.bxUjQmt5kkP_yyRCfNYqjdkypwiWUmX095cTz_-6Nt4",
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"reference": "BuHQgHCAz2SkMyW8xtckDpjYXEcr5D3Zm9dGFzLz6z5b"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjaGFpbi1kZXBsb3llZC1vbiIsInJlZmVyZW5jZSI6Ijl4Y2JGUG5xeHMxeTRjUUVQVndockJRUTRLRVV4Q3ZTSlU0RHBFMnBCR3M5IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI2OTIxODkxNTB9.8VtqgrEUjgSdsCZWZ6PjhdC-NaiYg694Dib_X-Ggvq8",
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"reference": "9xcbFPnqxs1y4cQEPVwhrBQQ4KEUxCvSJU4DpE2pBGs9"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:chain-deployed-o",
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"native": true,
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjaGFpbi1kZXBsb3llZC1vbiIsInJlZmVyZW5jZSI6IkFnOUFDM2QyZGlaS0xFRHFMTjJRVnhQRGZCYzU0eXpSY0xGSFRIUGtDUU5QIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkzNzU1LCJleHAiOjE3OTI2OTIxODkxNTB9.fmqu0lUvb4-AflgXqnDT1lZKhOUQX2NULJLrecVFVtE",
"reference": "Ag9AC3d2diZKLEDqLN2QVxPDfBc54yzRcLFHTHPkCQNP",
"solUsdPrice": 103.46,
"quotedLamports": "96655"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "93755",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0xcA11bde05977b3631167028862bE2a173976CA11"
}
},
"output": {
"type": "json",
"example": {
"note": "Chains where deployed bytecode exists at this address. The same address with identical bytecode on several chains usually means a deterministic (CREATE2) deployment; same address with different bytec…",
"source": "Chain JSON-RPC (16 EVM chains)",
"address": "0xcA11bde05977b3631167028862bE2a173976CA11",
"results": [
{
"ms": 292,
"ok": true,
"chain": "ethereum",
"chain_id": 1,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 286,
"ok": true,
"chain": "base",
"chain_id": 8453,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
},
{
"ms": 297,
"ok": true,
"chain": "arbitrum",
"chain_id": 42161,
"has_code": true,
"code_hash": "0xd5c15df687b16f2f...",
"code_size_bytes": 3808,
"eip7702_delegated": false
}
],
"elapsed_ms": 308,
"deployed_on": [
"ethereum",
"base",
"arbitrum"
],
"chains_queried": 16,
"deployed_count": 16,
"chains_answered": 16,
"distinct_bytecodes": 2,
"identical_bytecode_everywhere": false
}
}
},
"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"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "the contract address to look for on every chain"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"address",
"chains_queried",
"deployed_on",
"deployed_count",
"identical_bytecode_everywhere",
"results",
"note",
"source"
],
"properties": {
"note": {
"type": "string",
"description": "plain-language reading of the result"
},
"source": {
"type": "string",
"description": "where the data was read from or how it was computed"
},
"address": {
"type": "string",
"description": "the address queried"
},
"results": {
"type": [
"array",
"null"
],
"items": {
"type": "object",
"properties": {
"ok": {
"type": [
"boolean",
"null"
],
"description": "false when the chain did not answer"
},
"chain": {
"type": [
"string",
"null"
],
"description": "chain name"
},
"has_code": {
"type": [
"boolean",
"null"
],
"description": "true when contract code exists"
},
"code_hash": {
"type": [
"string",
"null"
],
"description": "start of the keccak256 of the code"
},
"code_size_bytes": {
"type": [
"number",
"null"
],
"description": "deployed code size"
},
"eip7702_delegated": {
"type": [
"boolean",
"null"
],
"description": "true for an EIP-7702 delegated account"
}
}
},
"description": "one entry per chain"
},
"elapsed_ms": {
"type": "number",
"description": "total time for all chains"
},
"deployed_on": {
"type": [
"array",
"null"
],
"description": "chains with contract code at the address"
},
"chains_queried": {
"type": "number",
"description": "chains asked"
},
"deployed_count": {
"type": "number",
"description": "how many chains"
},
"chains_answered": {
"type": "number",
"description": "chains that answered"
},
"distinct_bytecodes": {
"type": "number",
"description": "number of different bytecodes found"
},
"identical_bytecode_everywhere": {
"type": "boolean",
"description": "true when all deployments share one bytecode"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-22 18:01Z
- Last indexed by Roundhouse
- 2026-10-26 15:10Z
- Last enriched (probe, favicon, geo)
- 2026-10-21 04:45Z
- x402 version
- 2
- Max timeout
- 120s
- 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. 6 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 Saylor Innovations Data Desk 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%20Data%20Desk' 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/chain/deployed-on, 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.