Saylor Innovations Watchdog API
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TradingLiveeip155:8453Exactvia cdp
MultichainSolanaEvmOnchainToken-data
Calls · 30d
4↑ 7.7%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.
$13.49
Verified settled volume
1,430 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.
5
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-21 00:11Z
—
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.
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
91147units
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:watchdog:history:DezXAZ8z",
"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:history:DezXAZ8z",
"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:history:DezXAZ8z",
"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:history:DezXAZ8z",
"session": "eyJhcnRpY2xlSWQiOiJ3YXRjaGRvZzpoaXN0b3J5OkRlelhBWjh6N1Bucm5SSmp6M3dYQm9SZ2l4Q2E2eGpuQjdZYUIxcFBCMjYzIiwicmVmZXJlbmNlIjoiN29kNjdFNHZqQUFvdFZycWdpM0RXOFN4WmU5TG53cW05REZvU1REWWtSeGYiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjU0MTYzMzgzNH0.FWdeI9vNmD5mQ_vdZXxy2PRTc2pI3e65rgKPCpaQ50s",
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"reference": "7od67E4vjAAotVrqgi3DW8SxZe9Lnwqm9DFoSTDYkRxf"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:watchdog:history:DezXAZ8z",
"session": "eyJhcnRpY2xlSWQiOiJ3YXRjaGRvZzpoaXN0b3J5OkRlelhBWjh6N1Bucm5SSmp6M3dYQm9SZ2l4Q2E2eGpuQjdZYUIxcFBCMjYzIiwicmVmZXJlbmNlIjoiNEVUOXhtQVpSNDVHRTY5aHhGalE0Y3hwTW05ZU45Z1lydW5qZ3dWaEFzQ2UiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjU0MTYzMzgzNH0.0L2XeeYLpuuq5PigKLUz3DqK2XgNXQ1BsXQK_4J06Os",
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"reference": "4ET9xmAZR45GE69hxFjQ4cxpMm9eN9gYrunjgwVhAsCe"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:watchdog:history:DezXAZ8z",
"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": "eyJhcnRpY2xlSWQiOiJ3YXRjaGRvZzpoaXN0b3J5OkRlelhBWjh6N1Bucm5SSmp6M3dYQm9SZ2l4Q2E2eGpuQjdZYUIxcFBCMjYzIiwicmVmZXJlbmNlIjoiOHk4d1I4M0p5WDI0RGhvVDF2S2p2Q2VTdGFkb3ZGZlJ0UXZFbkMzZVN2TDciLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTExNDcsImV4cCI6MTc5MjU0MTYzMzgzNH0._xL46HNcF1LJhJtEYiiSJY8G4H9AIZ6hl9BQ6Ysrs8U",
"reference": "8y8wR83JyX24DhoT1vKjvCeStadovFfRtQvEnC3eSvL7",
"solUsdPrice": 106.42,
"quotedLamports": "93967"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "91147",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"solana_address": "Solana wallet address (base58-encoded public key, 43–44 characters)"
}
},
"output": {
"type": "json",
"example": {
"dex": "raydium",
"mint": "DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263",
"count": 100,
"candles": [
{
"t": 1787576400,
"low": 0.00000315,
"high": 0.0000033,
"open": 0.00000327,
"close": 0.0000032,
"volume": 13854.28
}
],
"aggregate": 1,
"timeframe": "hour",
"fetched_at": 1787934806.16,
"pool_address": "3UwfrdLTpAjxTRni1boc5HUWe6hzc4HgE5yLdvEp2Noc"
}
}
},
"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"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"properties": {
"dex": {
"type": [
"string",
"null"
]
},
"mint": {
"type": [
"string",
"null"
],
"description": "Solana token mint address"
},
"chain": {
"type": [
"string",
"null"
],
"description": "Chain the token was resolved to."
},
"count": {
"type": [
"number",
"null"
],
"description": "Number of items returned"
},
"address": {
"type": [
"string",
"null"
],
"description": "Account or contract address"
},
"candles": {
"type": "array",
"items": {
"type": "object",
"properties": {
"t": {
"type": [
"number",
"null"
],
"description": "Unix seconds."
},
"low": {
"type": [
"number",
"null"
],
"description": "Lowest value"
},
"high": {
"type": [
"number",
"null"
],
"description": "Highest value"
},
"open": {
"type": [
"number",
"null"
]
},
"close": {
"type": [
"number",
"null"
]
},
"volume": {
"type": [
"number",
"null"
],
"description": "Trading volume"
}
}
}
},
"summary": {
"type": [
"object",
"null"
],
"description": "change_pct, high, low, max_drawdown_pct, volatility_per_candle_pct and total_volume_usd computed from the returned candles."
},
"aggregate": {
"type": [
"number",
"null"
]
},
"timeframe": {
"type": [
"string",
"null"
]
},
"chain_name": {
"type": [
"string",
"null"
],
"description": "Chain name"
},
"fetched_at": {
"type": [
"number",
"null"
],
"description": "Time the data was fetched from the source (UTC)"
},
"pool_address": {
"type": [
"string",
"null"
],
"description": "Pool address"
}
}
}
}
}
}
},
"routeTemplate": "/api/history/:solana_address"
}
}Provenance
- Seen in the source catalog
- 2026-10-21 00:11Z
- Last indexed by Roundhouse
- 2026-10-24 07:21Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 08:15Z
- x402 version
- 2
- Max timeout
- 120s
- Liveness probe
- HTTP 400
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. 32 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 Watchdog API 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%20Watchdog%20API' 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/history/: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.