saylorinnovations.com
No description published for this endpoint.
TradingLiveeip155:8453Exactvia facilitator:thirdweb
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 15 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.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
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:defi-l2s",
"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:defi-l2s",
"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:defi-l2s",
"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:defi-l2s",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpkZWZpLWwycyIsInJlZmVyZW5jZSI6IjJ1SkZlRlFGN0pONVlGWFA3SGhjSms2ZjdkcGpLTGNieEFWTWc0czNTdkZZIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIzNzQ0Mzc0MTF9.AOEnO4nhJwIxdSB1CAGz1Bv2RLaMOzrAm8_KnhvxMxU",
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"reference": "2uJFeFQF7JN5YFXP7HhcJk6f7dpjKLcbxAVMg4s3SvFY"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:datadesk:defi-l2s",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpkZWZpLWwycyIsInJlZmVyZW5jZSI6IjkzTjg1QjM0cEFwdlBka3pnSnBxcUVWNUh4cVJLUzVhNVRubUNqSFFpVXp5IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIzNzQ0Mzc0MTF9.T4OtjSUuW5qNLPJ0h1zDob5ZDaYwNKgltJbW66m6yIk",
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"reference": "93N85B34pApvPdkzgJpqqEV5HxqRKS5a5TnmCjHQiUzy"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:defi-l2s",
"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": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpkZWZpLWwycyIsInJlZmVyZW5jZSI6IjRoVUE3eld0NGlZeDRWZnhRS0ZaMUNiMXhXZnV4RlR4RExrZ2pwVGE3M2loIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkyNTU2LCJleHAiOjE3OTIzNzQ0Mzc0MTF9.iwX3qpMq9BjZbz3M9rMHtQcaw1djQooB7RHvEbhGXr8",
"reference": "4hUA7zWt4iYx4VfxQKFZ1Cb1xWfuxFTxDLkgjpTa73ih",
"solUsdPrice": 104.8,
"quotedLamports": "95419"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "92556",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://saylorinnovations.com/api/defi/l2s?limit=10",
"tags": [
"layer 2",
"l2beat",
"rollups",
"tvs",
"base arbitrum optimism"
],
"iconUrl": "https://saylorinnovations.com/og-image.jpg",
"mimeType": "application/json",
"description": "Ethereum Layer 2 ranking - L2BEAT total value secured, share, 7-day change, stage, category and stack for Base, Arbitrum, Optimism and 90+ rollups",
"serviceName": "Saylor Innovations Data Desk"
},
"extensions": {
"tags": [
"layer 2",
"l2beat",
"rollups",
"tvs",
"base arbitrum optimism",
"l2 stages"
],
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"limit": "10"
}
},
"output": {
"type": "json",
"example": {
"top": [
{
"name": "Base Chain",
"rank": 1,
"slug": "base",
"type": "layer2",
"stack": [
"OP Stack"
],
"stage": "Stage 1",
"tvs_usd": 15699536896,
"category": "Optimistic Rollup",
"share_pct": 31.96,
"host_chain": "Ethereum",
"native_pct": 48.2,
"under_review": false,
"change_7d_pct": -4.6
},
{
"name": "Arbitrum One",
"rank": 2,
"slug": "arbitrum",
"type": "layer2",
"stack": [
"Arbitrum"
],
"stage": "Stage 1",
"tvs_usd": 10812140544,
"category": "Optimistic Rollup",
"share_pct": 22.01,
"host_chain": "Ethereum",
"native_pct": 28.2,
"under_review": true,
"change_7d_pct": -6.5
},
{
"name": "Hyperliquid",
"rank": 3,
"slug": "hyperliquid",
"type": "layer3",
"stack": [],
"stage": "Not applicable",
"tvs_usd": 6962854912,
"category": "Other",
"share_pct": 14.17,
"host_chain": "Arbitrum One",
"native_pct": 0,
"under_review": false,
"change_7d_pct": -2.9
},
{
"name": "Polygon PoS",
"rank": 4,
"slug": "polygon-pos",
"type": "layer2",
"stack": [],
"stage": "Not applicable",
"tvs_usd": 3929937408,
"category": "Other",
"share_pct": 8,
"host_chain": "Ethereum",
"native_pct": 4.6,
"under_review": false,
"change_7d_pct": -3.1
}
],
"note": "TVS is total value secured; stage is L2BEAT decentralisation maturity (0 to 2)",
"source": "L2BEAT",
"by_stage": {
"Stage 0": 68,
"Stage 1": 6,
"Stage 2": 4,
"Not applicable": 21
},
"projects": 99,
"total_value_secured_usd": 49129602476
}
}
},
"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",
"properties": {
"limit": {
"type": "string",
"description": "optional 1-50, default 15"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"projects",
"top"
],
"properties": {
"top": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "Name"
},
"rank": {
"type": [
"number",
"null"
],
"description": "Rank, 1 is highest"
},
"slug": {
"description": "URL-safe identifier"
},
"type": {
"type": "string",
"description": "Type or kind"
},
"stack": {},
"stage": {
"type": [
"string",
"null"
]
},
"tvs_usd": {
"type": [
"number",
"null"
],
"description": "Tvs, in US dollars"
},
"category": {
"type": [
"string",
"null"
],
"description": "Category"
},
"share_pct": {
"type": [
"number",
"null"
],
"description": "Share, as a percentage"
},
"host_chain": {
"description": "Host chain"
},
"native_pct": {
"description": "Native, as a percentage"
},
"under_review": {
"description": "Under review"
},
"change_7d_pct": {
"type": [
"number",
"null"
],
"description": "Change over 7 days, percent"
}
}
},
"description": "Top-ranked items"
},
"note": {
"type": [
"string",
"null"
],
"description": "Caveat or context for reading the result"
},
"source": {
"type": [
"string",
"null"
],
"description": "Data source the values come from"
},
"by_stage": {
"type": "object",
"description": "By stage"
},
"projects": {
"type": [
"number",
"null"
]
},
"checked_at": {
"type": [
"string",
"null"
],
"description": "Time the check was run (UTC)"
},
"total_value_secured_usd": {
"type": [
"number",
"null"
],
"description": "Total value secured usd"
}
}
}
}
}
}
}
},
"method": "GET",
"example": {
"top": [
{
"name": "Base Chain",
"rank": 1,
"slug": "base",
"type": "layer2",
"stack": [
"OP Stack"
],
"stage": "Stage 1",
"tvs_usd": 15699536896,
"category": "Optimistic Rollup",
"share_pct": 31.96,
"host_chain": "Ethereum",
"native_pct": 48.2,
"under_review": false,
"change_7d_pct": -4.6
},
{
"name": "Arbitrum One",
"rank": 2,
"slug": "arbitrum",
"type": "layer2",
"stack": [
"Arbitrum"
],
"stage": "Stage 1",
"tvs_usd": 10812140544,
"category": "Optimistic Rollup",
"share_pct": 22.01,
"host_chain": "Ethereum",
"native_pct": 28.2,
"under_review": true,
"change_7d_pct": -6.5
},
{
"name": "Hyperliquid",
"rank": 3,
"slug": "hyperliquid",
"type": "layer3",
"stack": [],
"stage": "Not applicable",
"tvs_usd": 6962854912,
"category": "Other",
"share_pct": 14.17,
"host_chain": "Arbitrum One",
"native_pct": 0,
"under_review": false,
"change_7d_pct": -2.9
},
{
"name": "Polygon PoS",
"rank": 4,
"slug": "polygon-pos",
"type": "layer2",
"stack": [],
"stage": "Not applicable",
"tvs_usd": 3929937408,
"category": "Other",
"share_pct": 8,
"host_chain": "Ethereum",
"native_pct": 4.6,
"under_review": false,
"change_7d_pct": -3.1
}
],
"note": "TVS is total value secured; stage is L2BEAT decentralisation maturity (0 to 2)",
"source": "L2BEAT",
"by_stage": {
"Stage 0": 68,
"Stage 1": 6,
"Stage 2": 4,
"Not applicable": 21
},
"projects": 99,
"total_value_secured_usd": 49129602476
},
"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": {
"type": "optional layer2 or layer3",
"limit": "optional 1-50, default 15"
},
"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": [
"projects",
"top"
],
"properties": {
"top": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"rank": {
"type": [
"number",
"null"
]
},
"type": {
"type": "string"
},
"stage": {
"type": [
"string",
"null"
]
},
"tvs_usd": {
"type": [
"number",
"null"
]
},
"category": {
"type": [
"string",
"null"
]
},
"share_pct": {
"type": [
"number",
"null"
]
},
"change_7d_pct": {
"type": [
"number",
"null"
]
}
}
}
},
"by_stage": {
"type": "object"
},
"projects": {
"type": [
"number",
"null"
]
},
"total_value_secured_usd": {
"type": [
"number",
"null"
]
}
}
},
"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
- Returns
- application/json
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
- 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/defi/l2s",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/defi/l2s",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
}
]Provenance
- Seen in the source catalog
- 2026-10-16 17:29Z
- Last indexed by Roundhouse
- 2026-10-25 16:16Z
- Last enriched (probe, favicon, geo)
- 2026-10-19 01:45Z
- 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. 15 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/defi/l2s, 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.