Parallax
Settler-frame census of the x402 economy for any UTC window: per-facilitator txs, USDC, buyers and sellers, the unattributed residual, breadth, and coverage computed from the scan manifest.
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.
{
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x790fE337b89900028E16fE63Cc087112F7a2BA49",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://parallax402.com/v1/window",
"description": "Settler-frame census of the x402 economy for any UTC window: per-facilitator txs, USDC, buyers and sellers, the unattributed residual, breadth, and coverage computed from the scan manifest.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"description": "from and to as YYYY-MM-DD UTC dates; to is exclusive, the span is at most 31 days",
"queryParams": {
"to": "last UTC day of the window, YYYY-MM-DD, EXCLUSIVE; at most 31 days and no later than today UTC (so the newest sellable day is yesterday)",
"from": "first UTC day of the window, YYYY-MM-DD, inclusive"
},
"discoverable": true
},
"output": {
"type": "object",
"description": "the census envelope: as_of, frame, coverage, method, attribution, tier, and a fact carrying one row per day plus summed totals, the residual, the recomputed attributed share and the days that were missing"
}
},
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "DMrJUdvmorbEXx8pA4R8yZ9kPfH3pUanCGxoG5AoPuTC",
"scheme": "exact",
"network": "solana",
"mimeType": "application/json",
"resource": "https://parallax402.com/v1/window",
"description": "Settler-frame census of the x402 economy for any UTC window: per-facilitator txs, USDC, buyers and sellers, the unattributed residual, breadth, and coverage computed from the scan manifest.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"description": "from and to as YYYY-MM-DD UTC dates; to is exclusive, the span is at most 31 days",
"queryParams": {
"to": "last UTC day of the window, YYYY-MM-DD, EXCLUSIVE; at most 31 days and no later than today UTC (so the newest sellable day is yesterday)",
"from": "first UTC day of the window, YYYY-MM-DD, inclusive"
},
"discoverable": true
},
"output": {
"type": "object",
"description": "the census envelope: as_of, frame, coverage, method, attribution, tier, and a fact carrying one row per day plus summed totals, the residual, the recomputed attributed share and the days that were missing"
}
},
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 60
}
],
"preview": {
"fact": {
"totals": {
"txs": 96484,
"fees": 2527.759836,
"usdc": 540231.388053,
"buyers": 3346,
"sellers": 1770,
"purchases": 96815
},
"attributed_share": {
"txs": 0.905694,
"usdc": 0.030885
}
},
"tier": "preview",
"as_of": "2026-08-30",
"frame": "settler-eip3009-base",
"method": "readings/2026-08-31-settler-frame/METHOD.md",
"reading": "daily",
"coverage": {
"ok": 44,
"ratio": 1,
"failed": 0
},
"stale_by": 26,
"attribution": [
"x402-list.com facilitator settler lists and daily figures (CC BY 4.0)",
"CDP Bazaar discovery API (public)"
]
},
"x402Version": 1
}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 0x790f…2BA49. The signed payment is good for 1 minute.
- Paid to
- 0x790f…2BA49
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 10000 smallest units
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
- DMrJUd…oPuTC
- Token contract
- EPjFWd…TDt1v
- Payment window
- 1 minute
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x790fE337b89900028E16fE63Cc087112F7a2BA49",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "DMrJUdvmorbEXx8pA4R8yZ9kPfH3pUanCGxoG5AoPuTC",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"to": "2026-08-27",
"from": "2026-08-25"
}
},
"output": {
"type": "json",
"format": "application/json",
"example": {
"fact": {
"days": [
{
"day": "2026-08-25",
"totals": {
"txs": 12,
"usdc": 16447.693817,
"purchases": 15
}
}
],
"totals": {
"txs": 24,
"usdc": 32895.387634,
"purchases": 30
},
"days_missing": [],
"attributed_share": {
"txs": 0.75,
"usdc": 0.999909
}
},
"tier": "full",
"as_of": "2026-08-26",
"frame": "settler-eip3009-base",
"coverage": {
"ok": 86,
"ratio": 0.977273,
"failed": 2
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "GET"
},
"queryParams": {
"type": "object",
"required": [
"from",
"to"
],
"properties": {
"to": {
"type": "string",
"description": "last UTC day of the window, YYYY-MM-DD, EXCLUSIVE; at most 31 days and no later than today UTC (so the newest sellable day is yesterday)"
},
"from": {
"type": "string",
"description": "first UTC day of the window, YYYY-MM-DD, inclusive"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"format"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"format": {
"type": "string",
"const": "application/json",
"description": "the census envelope: as_of, frame, coverage, method, attribution, tier, and a fact carrying one row per day plus summed totals, the residual, the recomputed attributed share and the days that were missing"
},
"example": {
"type": "object",
"description": "a worked response, shortened — the shape a full answer has"
}
},
"additionalProperties": false
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-02 04:22Z
- Last indexed by Roundhouse
- 2026-09-25 11:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-25 07:45Z
- x402 version
- 2
- Max timeout
- 60s
- 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. 24 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 Parallax 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=Parallax' 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://parallax402.com/v1/window, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.