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:impermanent-loss",
"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:impermanent-loss",
"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:impermanent-loss",
"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:impermanent-loss",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazppbXBlcm1hbmVudC1sb3NzIiwicmVmZXJlbmNlIjoiNlNUMzU1bm5tcUtBTUVkejZCU3dxTWM5cUw4TFc5RHNzYnh0WkpEd0xuMTgiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjgxOTA4NjM3NH0.s5BwY_xKcXrSj_2JApjM95O8KW6tuu8LGDHN6qoF_3Q",
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"reference": "6ST355nnmqKAMEdz6BSwqMc9qL8LW9DssbxtZJDwLn18"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:datadesk:impermanent-loss",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazppbXBlcm1hbmVudC1sb3NzIiwicmVmZXJlbmNlIjoiR3ZhamVSRmpqN29zN3ljNmlVVGhGdW9BTW5halRDVUo1YWMzQjhxS0RCS1kiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjgxOTA4NjM3NH0.XfZh42L-BpRaZTpGVDOOamvejTkLTZam9LoHHo0zTvo",
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"reference": "GvajeRFjj7os7yc6iUThFuoAMnajTCUJ5ac3B8qKDBKY"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:impermanent-loss",
"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": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazppbXBlcm1hbmVudC1sb3NzIiwicmVmZXJlbmNlIjoiNnlXMlZCeDNKTFM0N3E5YWJ5U3BuVnlWaGh5VGh6RWNTbVJ4RmJpQTZTTjkiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTQ3MjYsImV4cCI6MTc5MjgxOTA4NjM3NH0.CLTo288Ozwv20YWhsVPjB-QbrP9BcGoe2Wu3dK7tKmk",
"reference": "6yW2VBx3JLS47q9abySpnVyVhhyThzEcSmRxFbiA6SN9",
"solUsdPrice": 102.4,
"quotedLamports": "97656"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "94726",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://saylorinnovations.com/api/defi/impermanent-loss?price_change_percent=100&deposit_usd=1000&fee_apr_percent=30&days=90",
"tags": [
"impermanent loss calculator",
"v3 impermanent loss range",
"is providing liquidity worth it",
"lp vs hodl comparison",
"liquidity pool fee break even"
],
"iconUrl": "https://saylorinnovations.com/og-image.jpg",
"mimeType": "application/json",
"description": "Impermanent loss for a Uniswap v2 or v3 position: LP value against simply holding, the fee income needed to break even, and whether fees cover the loss.",
"serviceName": "Saylor Innovations Data Desk"
},
"extensions": {
"tags": [
"impermanent loss calculator",
"v3 impermanent loss range",
"is providing liquidity worth it",
"lp vs hodl comparison",
"liquidity pool fee break even",
"amm loss when price doubles"
],
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"days": "90",
"deposit_usd": "1000",
"fee_apr_percent": "30",
"price_change_percent": "100"
}
},
"output": {
"type": "json",
"example": {
"note": "Loss is measured against simply holding the two deposited assets. It ignores gas, taxes and fee income beyond the fee_apr_percent you supply.",
"source": "Constant product and concentrated liquidity AMM formulas",
"pool_type": "constant product (Uniswap v2 style, 50/50)",
"deposit_usd": 1000,
"price_ratio": 2,
"lp_value_usd": 1414.21,
"hold_value_usd": 1500,
"fees_cover_loss": false,
"fees_earned_usd": 73.97,
"net_vs_hold_usd": -11.82,
"loss_vs_hold_usd": -85.79,
"price_change_percent": 100,
"lp_value_with_fees_usd": 1488.18,
"impermanent_loss_percent": -5.7191
}
}
},
"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": [
"price_change_percent"
],
"properties": {
"days": {
"type": "string",
"description": "optional days in the pool, default 30"
},
"deposit_usd": {
"type": "string",
"description": "optional deposit value, default 1000"
},
"fee_apr_percent": {
"type": "string",
"description": "optional LP fee APR to offset the loss"
},
"price_change_percent": {
"type": "string",
"description": "price move of one asset vs the other, e.g. 100 for a doubling (or give initial_price and final_price)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"impermanent_loss_percent",
"lp_value_usd"
],
"properties": {
"note": {
"type": "string",
"description": "Plain-language caveat about how to read and use the result"
},
"range": {
"type": [
"object",
"null"
],
"description": "Concentrated liquidity inputs and whether the final price is inside the range"
},
"source": {
"type": "string",
"description": "Where the data or formula comes from"
},
"pool_type": {
"type": "string",
"description": "AMM model used: constant product or concentrated liquidity"
},
"deposit_usd": {
"type": "number",
"description": "Deposit value used for the dollar figures"
},
"price_ratio": {
"type": "number",
"description": "Final price divided by initial price of one asset against the other"
},
"lp_value_usd": {
"type": "number",
"description": "Value now of the liquidity position, before fees"
},
"hold_value_usd": {
"type": "number",
"description": "Value now if the two deposited assets had simply been held"
},
"fees_cover_loss": {
"type": "boolean",
"description": "True when the assumed fees outweigh the impermanent loss"
},
"fees_earned_usd": {
"type": "number",
"description": "Fee income implied by fee_apr_percent over the number of days"
},
"net_vs_hold_usd": {
"type": "number",
"description": "LP value plus fees minus hold value in USD"
},
"loss_vs_hold_usd": {
"type": "number",
"description": "LP value minus hold value in USD (negative is a loss)"
},
"price_change_percent": {
"type": "number",
"description": "Relative price move of the pair over the period, in percent"
},
"lp_value_with_fees_usd": {
"type": "number",
"description": "LP value plus the assumed fee income"
},
"impermanent_loss_percent": {
"type": "number",
"description": "LP value versus holding the same assets, in percent (negative is a loss)"
}
}
}
}
}
}
}
},
"method": "GET",
"example": {
"note": "Loss is measured against simply holding the two deposited assets. It ignores gas, taxes and fee income beyond the fee_apr_percent you supply.",
"source": "Constant product and concentrated liquidity AMM formulas",
"pool_type": "constant product (Uniswap v2 style, 50/50)",
"deposit_usd": 1000,
"price_ratio": 2,
"lp_value_usd": 1414.21,
"hold_value_usd": 1500,
"fees_cover_loss": false,
"fees_earned_usd": 73.97,
"net_vs_hold_usd": -11.82,
"loss_vs_hold_usd": -85.79,
"price_change_percent": 100,
"lp_value_with_fees_usd": 1488.18,
"impermanent_loss_percent": -5.7191
},
"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": {
"days": "optional days in the pool, default 30",
"range_low": "optional concentrated range low (needs initial_price)",
"range_high": "optional concentrated range high",
"deposit_usd": "optional deposit value, default 1000",
"final_price": "optional price now",
"initial_price": "optional price at deposit",
"fee_apr_percent": "optional LP fee APR to offset the loss",
"price_change_percent": "price move of one asset vs the other, e.g. 100 for a doubling (or give initial_price and final_price)"
},
"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": [
"impermanent_loss_percent",
"lp_value_usd"
],
"properties": {
"note": {
"type": "string",
"description": "Plain-language caveat about how to read and use the result"
},
"range": {
"type": [
"object",
"null"
],
"description": "Concentrated liquidity inputs and whether the final price is inside the range"
},
"source": {
"type": "string",
"description": "Where the data or formula comes from"
},
"pool_type": {
"type": "string",
"description": "AMM model used: constant product or concentrated liquidity"
},
"deposit_usd": {
"type": "number",
"description": "Deposit value used for the dollar figures"
},
"price_ratio": {
"type": "number",
"description": "Final price divided by initial price of one asset against the other"
},
"lp_value_usd": {
"type": "number",
"description": "Value now of the liquidity position, before fees"
},
"hold_value_usd": {
"type": "number",
"description": "Value now if the two deposited assets had simply been held"
},
"fees_cover_loss": {
"type": "boolean",
"description": "True when the assumed fees outweigh the impermanent loss"
},
"fees_earned_usd": {
"type": "number",
"description": "Fee income implied by fee_apr_percent over the number of days"
},
"net_vs_hold_usd": {
"type": "number",
"description": "LP value plus fees minus hold value in USD"
},
"loss_vs_hold_usd": {
"type": "number",
"description": "LP value minus hold value in USD (negative is a loss)"
},
"price_change_percent": {
"type": "number",
"description": "Relative price move of the pair over the period, in percent"
},
"lp_value_with_fees_usd": {
"type": "number",
"description": "LP value plus the assumed fee income"
},
"impermanent_loss_percent": {
"type": "number",
"description": "LP value versus holding the same assets, in percent (negative is a loss)"
}
}
},
"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/defi/impermanent-loss",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:137",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/defi/impermanent-loss",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:42161",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/defi/impermanent-loss",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/defi/impermanent-loss",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/defi/impermanent-loss",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/defi/impermanent-loss",
"description": "",
"maxAmountRequired": "91215",
"maxTimeoutSeconds": 120
}
]Provenance
- Seen in the source catalog
- 2026-10-21 01:21Z
- Last indexed by Roundhouse
- 2026-10-24 00:16Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 05:16Z
- 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/defi/impermanent-loss, 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.