saylorinnovations.com
No description published for this endpoint.
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:datadesk:cod-crystal-stru",
"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:cod-crystal-stru",
"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:cod-crystal-stru",
"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:cod-crystal-stru",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjb2QtY3J5c3RhbC1zdHJ1Y3R1cmVzIiwicmVmZXJlbmNlIjoiQWlyQ050Z3NVU2FyWUJ6NVpEQWM5dU12a3JDdENkQXlQWUdhUXB1TGZuTkUiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjgwODI5ODQ5N30.SG9ISYPo0hJxogzz6zma1hEKfdI6lFWxxwzOow3VR6A",
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"reference": "AirCNtgsUSarYBz5ZDAc9uMvkrCtCdAyPYGaQpuLfnNE"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:datadesk:cod-crystal-stru",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjb2QtY3J5c3RhbC1zdHJ1Y3R1cmVzIiwicmVmZXJlbmNlIjoiMzhoUHhKM2JLRUNkTnRuaUVxV0hENVIxQlhFakxiU1pUR2tqWmczU1RxbTQiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjgwODI5ODQ5N30.DBl-ZW0CMAcThAoay0Cbhs7nbS6k01bVaadeK8Ra7ME",
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"reference": "38hPxJ3bKECdNtniEqWHD5R1BXEjLbSZTGkjZg3STqm4"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:cod-crystal-stru",
"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": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjb2QtY3J5c3RhbC1zdHJ1Y3R1cmVzIiwicmVmZXJlbmNlIjoiNmVDakRFZEhwUlBXa2lUbUR4czZZRGJ0UkF3b1hhck1hVHBkSFp3Z2hBQnAiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTQ2MTQsImV4cCI6MTc5MjgwODI5ODQ5N30.iM19GoyMk_8suOod_No4uBlMvQBVVqQdS2WjnVHq-C4",
"reference": "6eCjDEdHpRPWkiTmDxs6YDbtRAwoXarMaTpdHZwghABp",
"solUsdPrice": 102.52,
"quotedLamports": "97541"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "94614",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://saylorinnovations.com/api/science/crystal-structures?text=quartz&limit=3",
"tags": [
"crystal structure of quartz",
"space group and unit cell",
"cif file for a compound",
"crystallography open database",
"lattice parameters of a material"
],
"iconUrl": "https://saylorinnovations.com/og-image.jpg",
"mimeType": "application/json",
"description": "Crystallography Open Database search - formula, mineral, space group, unit cell parameters and volume, publication and a link to the CIF file",
"serviceName": "Saylor Innovations Data Desk"
},
"extensions": {
"tags": [
"crystal structure of quartz",
"space group and unit cell of a mineral",
"cif file for a compound",
"crystallography open database search",
"lattice parameters of a material",
"mineral crystal data lookup"
],
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"text": "quartz",
"limit": "3"
}
},
"output": {
"type": "json",
"example": {
"count": 3,
"query": "quartz",
"source": "Crystallography Open Database (COD, public domain)",
"structures": [
{
"doi": "10.1107/S0021889887011567",
"url": "https://www.crystallography.net/cod/5000035.html",
"cell": {
"a": 4.91239,
"b": 4.91239,
"c": 5.40385,
"beta": 90,
"alpha": 90,
"gamma": 120,
"volume_a3": 112.9
},
"name": "Silicon oxide",
"year": 1988,
"cod_id": "5000035",
"cif_url": "https://www.crystallography.net/cod/5000035.cif",
"formula": "O2 Si",
"journal": "Journal of Applied Crystallography",
"mineral": "Quartz",
"space_group": "P 32 2 1",
"pressure_kpa": null,
"temperature_k": null,
"space_group_number": 154
},
{
"doi": null,
"url": "https://www.crystallography.net/cod/9000775.html",
"cell": {
"a": 4.916,
"b": 4.916,
"c": 5.4054,
"beta": 90,
"alpha": 90,
"gamma": 120,
"volume_a3": 113.131
},
"name": null,
"year": 1980,
"cod_id": "9000775",
"cif_url": "https://www.crystallography.net/cod/9000775.cif",
"formula": "O2 Si",
"journal": "American Mineralogist",
"mineral": "Quartz",
"space_group": "P 32 2 1",
"pressure_kpa": null,
"temperature_k": null,
"space_group_number": null
},
{
"doi": null,
"url": "https://www.crystallography.net/cod/9000776.html",
"cell": {
"a": 4.8362,
"b": 4.8362,
"c": 5.3439,
"beta": 90,
"alpha": 90,
"gamma": 120,
"volume_a3": 108.242
},
"name": null,
"year": 1980,
"cod_id": "9000776",
"cif_url": "https://www.crystallography.net/cod/9000776.cif",
"formula": "O2 Si",
"journal": "American Mineralogist",
"mineral": "Quartz",
"space_group": "P 32 2 1",
"pressure_kpa": null,
"temperature_k": null,
"space_group_number": null
}
],
"total_matches": 167
}
}
},
"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": [
"text"
],
"properties": {
"text": {
"type": "string",
"description": "Mineral, compound name or formula text"
},
"limit": {
"type": "string",
"description": "optional 1-25, default 8"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"query",
"structures"
],
"properties": {
"count": {
"type": "number",
"description": "Number of items returned"
},
"query": {
"type": "string",
"description": "The query as the server interpreted it"
},
"source": {
"type": "string",
"description": "Data source the values come from"
},
"structures": {
"type": "array",
"items": {
"type": "object",
"properties": {
"doi": {
"description": "Digital object identifier"
},
"url": {
"description": "Canonical URL"
},
"cell": {
"type": [
"object",
"null"
],
"description": "Unit cell: a, b, c, angles and volume"
},
"name": {
"description": "Name"
},
"year": {
"description": "Calendar year"
},
"cod_id": {
"description": "Cod id identifier"
},
"cif_url": {
"description": "Cif URL"
},
"formula": {
"description": "Formula used for the calculation"
},
"journal": {
"type": [
"string",
"null"
],
"description": "Journal of the source paper"
},
"mineral": {
"type": [
"string",
"null"
],
"description": "Mineral name, if any"
},
"space_group": {
"description": "Space group"
},
"pressure_kpa": {
"description": "Pressure kpa"
},
"temperature_k": {
"description": "Temperature k"
},
"space_group_number": {
"description": "Space group number"
}
}
},
"description": "Structures with COD id, formula, mineral, space group, unit cell (a, b, c, angles, volume), conditions, publication and CIF link"
},
"total_matches": {
"type": "number",
"description": "Total number of matches before any limit is applied"
}
}
}
}
}
}
}
},
"method": "GET",
"example": {
"count": 3,
"query": "quartz",
"source": "Crystallography Open Database (COD, public domain)",
"structures": [
{
"doi": "10.1107/S0021889887011567",
"url": "https://www.crystallography.net/cod/5000035.html",
"cell": {
"a": 4.91239,
"b": 4.91239,
"c": 5.40385,
"beta": 90,
"alpha": 90,
"gamma": 120,
"volume_a3": 112.9
},
"name": "Silicon oxide",
"year": 1988,
"cod_id": "5000035",
"cif_url": "https://www.crystallography.net/cod/5000035.cif",
"formula": "O2 Si",
"journal": "Journal of Applied Crystallography",
"mineral": "Quartz",
"space_group": "P 32 2 1",
"pressure_kpa": null,
"temperature_k": null,
"space_group_number": 154
},
{
"doi": null,
"url": "https://www.crystallography.net/cod/9000775.html",
"cell": {
"a": 4.916,
"b": 4.916,
"c": 5.4054,
"beta": 90,
"alpha": 90,
"gamma": 120,
"volume_a3": 113.131
},
"name": null,
"year": 1980,
"cod_id": "9000775",
"cif_url": "https://www.crystallography.net/cod/9000775.cif",
"formula": "O2 Si",
"journal": "American Mineralogist",
"mineral": "Quartz",
"space_group": "P 32 2 1",
"pressure_kpa": null,
"temperature_k": null,
"space_group_number": null
},
{
"doi": null,
"url": "https://www.crystallography.net/cod/9000776.html",
"cell": {
"a": 4.8362,
"b": 4.8362,
"c": 5.3439,
"beta": 90,
"alpha": 90,
"gamma": 120,
"volume_a3": 108.242
},
"name": null,
"year": 1980,
"cod_id": "9000776",
"cif_url": "https://www.crystallography.net/cod/9000776.cif",
"formula": "O2 Si",
"journal": "American Mineralogist",
"mineral": "Quartz",
"space_group": "P 32 2 1",
"pressure_kpa": null,
"temperature_k": null,
"space_group_number": null
}
],
"total_matches": 167
},
"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": {
"text": "Mineral, compound name or formula text",
"limit": "optional 1-25, default 8"
},
"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": [
"query",
"structures"
],
"properties": {
"count": {
"type": "number"
},
"query": {
"type": "string"
},
"source": {
"type": "string"
},
"structures": {
"type": "array",
"items": {
"type": "object",
"properties": {
"cell": {
"type": [
"object",
"null"
],
"description": "Unit cell: a, b, c, angles and volume"
},
"journal": {
"type": [
"string",
"null"
],
"description": "Journal of the source paper"
},
"mineral": {
"type": [
"string",
"null"
],
"description": "Mineral name, if any"
}
}
},
"description": "Structures with COD id, formula, mineral, space group, unit cell (a, b, c, angles, volume), conditions, publication and CIF link"
},
"total_matches": {
"type": "number"
}
}
},
"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.
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/science/crystal-structures",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:137",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/science/crystal-structures",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:42161",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/science/crystal-structures",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/science/crystal-structures",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/science/crystal-structures",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/science/crystal-structures",
"description": "",
"maxAmountRequired": "90434",
"maxTimeoutSeconds": 120
}
]Provenance
- Seen in the source catalog
- 2026-10-20 14:51Z
- Last indexed by Roundhouse
- 2026-10-24 01:45Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 02:16Z
- 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.
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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/science/crystal-structures, 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.