saylorinnovations.com
Custom website design, hosting, automation and AI integration for small businesses nationwide. Most builds live in 3 weeks.
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 required to access this resource.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:watchdog:wallet:7LSjfrJf8",
"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:watchdog:wallet:7LSjfrJf8",
"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:watchdog:wallet:7LSjfrJf8",
"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:watchdog:wallet:7LSjfrJf8",
"session": "eyJhcnRpY2xlSWQiOiJ3YXRjaGRvZzp3YWxsZXQ6N0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJyZWZlcmVuY2UiOiJGc3h4YUJpeWpzZjFhcWZLVXpaV0F4b3RiczJwN2g0cXp3V0FEamYxUTZtUyIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyODU4Njc5OTczfQ.45atfnXx5fo95imNTdCXbdHEajIxhSd66heLmFbTKeo",
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"reference": "FsxxaBiyjsf1aqfKUzZWAxotbs2p7h4qzwWADjf1Q6mS"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:watchdog:wallet:7LSjfrJf8",
"session": "eyJhcnRpY2xlSWQiOiJ3YXRjaGRvZzp3YWxsZXQ6N0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJyZWZlcmVuY2UiOiIybnZMZnRnWGI2V3VwekUzM1FBdDV3S0xNYmh1eXRnb2F2ZmJuaXR4Y3BmZiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVzOXZNRnJ6YUNFUm1KZnJGNEgyRllENEtDb05rWTExTWNDZThCZW53TllCIiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyODU4Njc5OTczfQ.lFVimVgHF-Zte4n9q43ny141cKjcuGanr46P-fatSOA",
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"reference": "2nvLftgXb6WupzE33QAt5wKLMbhuytgoavfbnitxcpff"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:watchdog:wallet:7LSjfrJf8",
"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": "eyJhcnRpY2xlSWQiOiJ3YXRjaGRvZzp3YWxsZXQ6N0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJyZWZlcmVuY2UiOiJKOEVKdDliOXd0SEZ5d0gxWGk2ZTFVbzRVNG5WY0NEZ2VVajZ0Y05IeDJZQyIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6bnVsbCwibWluQW1vdW50Ijo5Njk3MCwiZXhwIjoxNzkyODU4Njc5OTczfQ.OxjrDO-PVRmqdyGR49K5sZH536JUXsg6FjELd5CH3Ho",
"reference": "J8EJt9b9wtHFywH1Xi6e1Uo4U4nVcCDgeUj6tcNHx2YC",
"solUsdPrice": 100.03,
"quotedLamports": "99970"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "96970",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://saylorinnovations.com/api/wallet/7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"tags": [
"multichain",
"solana",
"evm",
"onchain",
"token-data"
],
"iconUrl": "https://saylorinnovations.com/og-image.jpg",
"mimeType": "application/json",
"description": "Wallet analysis on Solana, 7 EVM chains, Tron, Sui, TON, Hedera, Stellar, XRP Ledger, Algorand, Aptos, NEAR, Cosmos, Kaspa and Filecoin - balances, activity, OFAC flags.",
"serviceName": "Saylor Innovations Watchdog API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"address": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7"
}
},
"output": {
"type": "json",
"example": {
"flags": [],
"address": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"fetched_at": 1787934806.16,
"sol_balance": null,
"top_holdings": [
{
"mint": "31BqeVqMnHdCN2JzKbNmi8rTQNF5y1b8xX59Ny65iDe9",
"amount": 192353.71,
"decimals": 6
}
],
"token_positions": 12,
"sampled_age_days": 210,
"failed_tx_rate_pct": 1.2,
"recent_signature_count": 100
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"pathParams"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "Wallet address: Solana base58, EVM 0x (read on 7 EVM chains in parallel), Tron T, Sui 0x (64 hex) or TON"
}
}
},
"queryParams": {
"type": "object",
"properties": {
"chain": {
"type": "string",
"description": "optional chain id or comma list (for example base,ethereum) to limit an EVM address to those chains"
},
"tokens": {
"type": "string",
"description": "optional comma list of up to 10 ERC-20 contract addresses to read; requires chain to name a single chain"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"properties": {
"chain": {
"type": [
"string",
"null"
],
"description": "Blockchain the data is for"
},
"flags": {
"type": "array",
"items": {
"type": "string"
},
"description": "Transparent heuristics. Absence of a flag is not a safety guarantee."
},
"chains": {
"type": [
"array",
"null"
],
"items": {
"type": "object"
},
"description": "Per-chain balances, valued token holdings, account type, tx count."
},
"totals": {
"type": [
"object",
"null"
],
"description": "Total USD across chains, stablecoin share, active chain count."
},
"address": {
"type": [
"string",
"null"
],
"description": "Account or contract address"
},
"coverage": {
"type": [
"object",
"null"
]
},
"sanctions": {
"type": [
"object",
"null"
],
"description": "OFAC SDN screening; sanctioned null means screening was unavailable, not clean."
},
"chain_name": {
"type": [
"string",
"null"
],
"description": "Chain name"
},
"fetched_at": {
"type": [
"number",
"null"
],
"description": "Time the data was fetched from the source (UTC)"
},
"sol_balance": {
"type": [
"number",
"null"
],
"description": "Sol balance"
},
"wallet_type": {
"type": [
"string",
"null"
],
"description": "eoa, contract, eoa_delegated_7702 or mixed (EVM); unknown elsewhere."
},
"top_holdings": {
"type": "array",
"items": {
"type": "object"
},
"description": "Top holdings"
},
"last_seen_unix": {
"type": [
"number",
"null"
],
"description": "Last seen unix"
},
"first_seen_unix": {
"type": [
"number",
"null"
],
"description": "First seen unix"
},
"token_positions": {
"type": [
"number",
"null"
],
"description": "Token positions"
},
"sampled_age_days": {
"type": [
"number",
"null"
],
"description": "Sampled age days"
},
"failed_tx_rate_pct": {
"type": [
"number",
"null"
],
"description": "Failed tx rate, as a percentage"
},
"recent_signature_count": {
"type": [
"number",
"null"
],
"description": "Capped at the 100 most recent — a floor, not a lifetime total."
}
}
}
}
}
}
},
"routeTemplate": "/api/wallet/:address"
},
"method": "GET",
"example": {
"flags": [],
"address": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"fetched_at": 1787934806.16,
"sol_balance": null,
"top_holdings": [
{
"mint": "31BqeVqMnHdCN2JzKbNmi8rTQNF5y1b8xX59Ny65iDe9",
"amount": 192353.71,
"decimals": 6
}
],
"token_positions": 12,
"sampled_age_days": 210,
"failed_tx_rate_pct": 1.2,
"recent_signature_count": 100
},
"license": "LicenseRef-Saylor-Agent-Use-1.0",
"mimeType": "application/json",
"freshness": "60s cache",
"freeSample": "https://saylorinnovations.com/api/sample/wallet",
"tokenCount": null,
"inputSchema": {
"chain": "optional chain id or comma list (for example base,ethereum) to limit an EVM address to those chains",
"tokens": "optional comma list of up to 10 ERC-20 contract addresses to read; requires chain to name a single chain",
"address": "Wallet address: Solana base58, EVM 0x (read on 7 EVM chains in parallel), Tron T, Sui 0x (64 hex) or TON"
},
"serviceName": "Saylor Innovations Watchdog API",
"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",
"properties": {
"chain": {
"type": [
"string",
"null"
]
},
"flags": {
"type": "array",
"items": {
"type": "string"
},
"description": "Transparent heuristics. Absence of a flag is not a safety guarantee."
},
"chains": {
"type": [
"array",
"null"
],
"items": {
"type": "object"
},
"description": "Per-chain balances, valued token holdings, account type, tx count."
},
"totals": {
"type": [
"object",
"null"
],
"description": "Total USD across chains, stablecoin share, active chain count."
},
"address": {
"type": [
"string",
"null"
]
},
"coverage": {
"type": [
"object",
"null"
]
},
"sanctions": {
"type": [
"object",
"null"
],
"description": "OFAC SDN screening; sanctioned null means screening was unavailable, not clean."
},
"chain_name": {
"type": [
"string",
"null"
]
},
"fetched_at": {
"type": [
"number",
"null"
]
},
"sol_balance": {
"type": [
"number",
"null"
]
},
"wallet_type": {
"type": [
"string",
"null"
],
"description": "eoa, contract, eoa_delegated_7702 or mixed (EVM); unknown elsewhere."
},
"top_holdings": {
"type": "array",
"items": {
"type": "object"
}
},
"last_seen_unix": {
"type": [
"number",
"null"
]
},
"first_seen_unix": {
"type": [
"number",
"null"
]
},
"token_positions": {
"type": [
"number",
"null"
]
},
"sampled_age_days": {
"type": [
"number",
"null"
]
},
"failed_tx_rate_pct": {
"type": [
"number",
"null"
]
},
"recent_signature_count": {
"type": [
"number",
"null"
],
"description": "Capped at the 100 most recent — a floor, not a lifetime total."
}
}
},
"trySampleFirst": "Fetch the free sample to see the exact response shape and data quality before paying.",
"settlementModes": [
"facilitator-transaction",
"self-submitted-reference"
],
"typicalLatencyMs": 460
},
"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 0.01 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
- Returns
- application/json
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
- Returns
- application/json
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
- Returns
- application/json
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
- Returns
- application/json
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
- Returns
- application/json
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
- Returns
- application/json
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/wallet/:solana_address",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:137",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/wallet/:solana_address",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:42161",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/wallet/:solana_address",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/wallet/:solana_address",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/wallet/:solana_address",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/wallet/:solana_address",
"description": "",
"maxAmountRequired": "91147",
"maxTimeoutSeconds": 120
}
]Provenance
- Seen in the source catalog
- 2026-10-21 00:11Z
- Last indexed by Roundhouse
- 2026-10-24 00:46Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 16:16Z
- x402 version
- 1
- 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. 8 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 saylorinnovations.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=saylorinnovations.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://saylorinnovations.com/api/wallet/:solana_address, 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.