Spread Paywall API
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MediaLiveeip155:8453Exactvia cdp
CryptoPortfolioAllocationTradingAgents
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far.
$1.98
Verified settled volume
389 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-11-11 03:31Z
–
Upstream on-chain volume
0 transactions, checked 2026-11-09 05:45Z
Paid to
0xD7CDd563e8F6A249B076A702b7e2C233CCF3481dThe wallet the 402 directs payment to. Its full payment record 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.
Recent payments · which agents last used it
Every indexed settlement paid to this service’s wallet, newest first. The index does not record which endpoint a payment was for, so if this wallet serves more than one endpoint, the rows include payments for the others. Paged up to the newest 5,000; the full history is on the merchant page.
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",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD7CDd563e8F6A249B076A702b7e2C233CCF3481d",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"transactionVersions": [
0,
1
]
},
"payTo": "E21AWkUtLz4BP7AaT82CF7v86Kmv4YzN4NAR1FQnEmqy",
"amount": "50000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://workspace-x402-paywall.onrender.com/portfolio/generate",
"tags": [
"crypto",
"portfolio",
"allocation",
"trading",
"agents"
],
"mimeType": "application/json",
"description": "Efficient portfolio generator for agents: builds a BTC/ETH/SOL + USDC allocation for a risk level (conservative, balanced, aggressive) with inverse-volatility weighting inside a risk template (risky sleeve 30/70/95% of the portfolio, the rest USDC), computed from 7 days of live Coinbase hourly candles - returns per-asset weight, dollar amount at the requested portfolio size, spot price and realized hourly volatility",
"serviceName": "Spread Paywall API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"risk": "balanced",
"amount": "1000"
}
},
"output": {
"example": {
"risk": "balanced",
"notes": [
"Rebalance when any allocation drifts more than 5 percentage points from its target weight, or monthly, whichever comes first.",
"Mechanical generator, not financial advice."
],
"amount": 1000,
"method": "inverse-volatility weighting within risk template; 7d hourly realized vol",
"price_usd": 0.05,
"allocations": [
{
"asset": "BTC",
"amount_usd": 301.2,
"spot_price": 80250,
"weight_pct": 30.12,
"vol_7d_hourly": 0.0021
},
{
"asset": "ETH",
"amount_usd": 214.4,
"spot_price": 2362,
"weight_pct": 21.44,
"vol_7d_hourly": 0.003
},
{
"asset": "SOL",
"amount_usd": 184.4,
"spot_price": 188.4,
"weight_pct": 18.44,
"vol_7d_hourly": 0.0035
},
{
"asset": "USDC",
"amount_usd": 300,
"spot_price": 1,
"weight_pct": 30,
"vol_7d_hourly": 0
}
],
"generated_at": "2026-10-28T14:00:00.000Z"
}
}
},
"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": {
"risk": {
"type": "string",
"description": "Risk level: conservative, balanced or aggressive (default balanced)"
},
"amount": {
"type": "string",
"description": "Portfolio size in USD used to express the allocations in dollars (default 1000)"
}
}
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2,
"sample_output": {
"risk": "<conservative|balanced|aggressive>",
"notes": [
"<note>"
],
"amount": "<number>",
"method": "<method string>",
"price_usd": 0.05,
"allocations": [
{
"asset": "<symbol>",
"amount_usd": "<number>",
"spot_price": "<number>",
"weight_pct": "<number>",
"vol_7d_hourly": "<number>"
}
],
"generated_at": "<ISO timestamp>"
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying: a price here is a claim, not a quote.
0.05USDC≈ $0.05 USD
on Base · exact scheme
Pay 0.05 USDC on Base to 0xD7CD…3481d. The signed payment is good for 5 minutes.
- Paid to
- 0xD7CD…3481d
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 50000 smallest units
50000units
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
- E21AWk…nEmqy
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xD7CDd563e8F6A249B076A702b7e2C233CCF3481d",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"transactionVersions": [
0,
1
]
},
"payTo": "E21AWkUtLz4BP7AaT82CF7v86Kmv4YzN4NAR1FQnEmqy",
"amount": "50000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"risk": "balanced",
"amount": "1000"
}
},
"output": {
"example": {
"risk": "balanced",
"notes": [
"Rebalance when any allocation drifts more than 5 percentage points from its target weight, or monthly, whichever comes first.",
"Mechanical generator, not financial advice."
],
"amount": 1000,
"method": "inverse-volatility weighting within risk template; 7d hourly realized vol",
"price_usd": 0.05,
"allocations": [
{
"asset": "BTC",
"amount_usd": 301.2,
"spot_price": 80250,
"weight_pct": 30.12,
"vol_7d_hourly": 0.0021
},
{
"asset": "ETH",
"amount_usd": 214.4,
"spot_price": 2362,
"weight_pct": 21.44,
"vol_7d_hourly": 0.003
},
{
"asset": "SOL",
"amount_usd": 184.4,
"spot_price": 188.4,
"weight_pct": 18.44,
"vol_7d_hourly": 0.0035
},
{
"asset": "USDC",
"amount_usd": 300,
"spot_price": 1,
"weight_pct": 30,
"vol_7d_hourly": 0
}
],
"generated_at": "2026-10-28T14:00:00.000Z"
}
}
},
"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": {
"risk": {
"type": "string",
"description": "Risk level: conservative, balanced or aggressive (default balanced)"
},
"amount": {
"type": "string",
"description": "Portfolio size in USD used to express the allocations in dollars (default 1000)"
}
}
}
},
"additionalProperties": false
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-11-11 03:31Z
- Last indexed by Roundhouse
- 2026-11-14 18:00Z
- Last enriched (probe, favicon, geo)
- 2026-11-09 05:45Z
- x402 version
- 2
- Max timeout
- 300s
- 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. 5 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 Spread Paywall 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=Spread%20Paywall%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://workspace-x402-paywall.onrender.com/portfolio/generate, 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.