api.onesource.io
Three data families for AI agents: live Ethereum mainnet, Sepolia testnet, and Robinhood Chain RPC reads, plus Deepstate on-chain market data (order books, trades, candles, and analytics), plus The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain (supply, policy, epochs, auctions, branches, vaults, exit pressure). Pay per call or use batch/session mode: USDC on Base via x402, or pathUSD/USDC.e on Tempo via MPP. No API key required to start; a flat-rate monthly subscription
DataLiveeip155:8453Exactvia cdp
Calls · 30d
11
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 snapshots so far.
$20.97
Verified settled volume
A floor: summed over 5,000 of up to 90,424 indexed settlements. The exact verified count is not computed for a wallet this size.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
11
Calls · 30d
Upstream's own call count for this endpoint, not ours.
11
Unique payers · 30d
Last called 2026-09-23 01:11Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3eaThe 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.
{
"meta": {
"network": "eip155:8453",
"endpoint": "/v1/holders/concentration",
"cost_usdc": "0.02"
},
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxAmountRequired": "20000",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/standard/v1/holders/concentration",
"mimeType": "application/json",
"description": "The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. How concentrated Charter and Branch ownership is across wallets, including a standard concentration score and a genesis-versus-auction breakdown."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"basis": "derived",
"network": "robinhood",
"chain_id": 4663,
"top_owners": [
{
"owner": "0x5977b25419f9c0ddcb2f89fe204955622f4f57ea",
"branches": 74,
"charters": 6,
"share_of_live_branches": 0.1445
}
],
"as_of_block": 63499000,
"cohort_split": {
"auction": {
"branches": 332,
"charters": 38,
"retirements": 11,
"revocations": 1
},
"genesis": {
"branches": 180,
"charters": 20,
"retirements": 3,
"revocations": 0
},
"unknown": {
"branches": 0,
"charters": 2,
"retirements": 0,
"revocations": 0
}
},
"live_charters": 58,
"unique_owners": 41,
"burned_charters": 2,
"concentration_hhi": 812.4,
"branch_distribution": [
{
"bucket": "1",
"charters": 12
}
],
"total_branches_live": 512,
"concentration_hhi_label": "Herfindahl-Hirschman Index (0-10000 scale) of owner share of live branches; conventionally, <1500 is unconcentrated, 1500-2500 moderately concentrated, >2500 highly concentrated"
}
}
},
"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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"top": {
"type": "integer",
"minimum": 1
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"basis": {
"type": "string"
},
"network": {
"type": "string"
},
"chain_id": {
"type": "integer"
},
"top_owners": {
"type": "array",
"items": {
"type": "object",
"properties": {
"owner": {
"type": "string"
},
"branches": {
"type": "integer"
},
"charters": {
"type": "integer"
},
"share_of_live_branches": {
"type": "number"
}
}
}
},
"as_of_block": {
"type": "integer"
},
"cohort_split": {
"type": "object",
"properties": {
"auction": {
"type": "object",
"properties": {
"branches": {
"type": "integer"
},
"charters": {
"type": "integer"
},
"retirements": {
"type": "integer"
},
"revocations": {
"type": "integer"
}
}
},
"genesis": {
"type": "object",
"properties": {
"branches": {
"type": "integer"
},
"charters": {
"type": "integer"
},
"retirements": {
"type": "integer"
},
"revocations": {
"type": "integer"
}
}
},
"unknown": {
"type": "object",
"properties": {
"branches": {
"type": "integer"
},
"charters": {
"type": "integer"
},
"retirements": {
"type": "integer"
},
"revocations": {
"type": "integer"
}
}
}
}
},
"live_charters": {
"type": "integer"
},
"unique_owners": {
"type": "integer"
},
"burned_charters": {
"type": "integer"
},
"concentration_hhi": {
"type": "number"
},
"branch_distribution": {
"type": "array",
"items": {
"type": "object",
"properties": {
"bucket": {
"type": "string"
},
"charters": {
"type": "integer"
}
}
}
},
"total_branches_live": {
"type": "integer"
},
"concentration_hhi_label": {
"type": "string"
}
},
"description": "Endpoint-specific response payload"
}
}
}
}
}
}
},
"x402Version": 2,
"payment_rails": [
{
"rail": "x402",
"chain": "eip155:8453",
"assets": [
"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
],
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea"
},
{
"rail": "mpp",
"chain": "tempo:4217",
"assets": [
"0x20c000000000000000000000b9537d11c60e8b50",
"0x20c0000000000000000000000000000000000000"
],
"recipient": "0x19B8e99079A5558ff4460357b0a78e14a7F600B7"
}
],
"api_key_subscription": {
"url": "https://onesource.io/rest-api#pricing",
"description": "Alternative to paying per call: a flat-rate monthly subscription authenticated with `Authorization: Bearer <key>`. No wallet, stablecoin, or on-chain settlement required. Use this if the client cannot custody a private key, if billing must be invoiced, or if per-call pricing costs more than a flat fee at your volume."
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.02USDC≈ $0.02 USD
on Base · exact scheme
Pay 0.02 USDC on Base to 0x52E2…1f3ea. The signed payment is good for 1 hour.
- Paid to
- 0x52E2…1f3ea
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 hour
- As published
- 20000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxAmountRequired": "20000",
"maxTimeoutSeconds": 3600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"basis": "derived",
"scope": "top_owners, branch_distribution and concentration_hhi cover LIVE (not burned) charters only; cohort_split covers every charter, live and burned, since mint origin is a permanent fact about a charter",
"network": "robinhood",
"chain_id": 4663,
"top_owners": [
{
"owner": "0x5977b25419f9c0ddcb2f89fe204955622f4f57ea",
"branches": 74,
"charters": 6,
"share_of_live_branches": 0.1445
}
],
"as_of_block": 63499000,
"cohort_split": {
"auction": {
"branches": 332,
"charters": 38,
"retirements": 11,
"revocations": 1
},
"genesis": {
"branches": 180,
"charters": 20,
"retirements": 3,
"revocations": 0
},
"unknown": {
"branches": 0,
"charters": 2,
"retirements": 0,
"revocations": 0
}
},
"live_charters": 58,
"unique_owners": 41,
"burned_charters": 2,
"concentration_hhi": 812.4,
"branch_distribution": [
{
"bucket": "1",
"charters": 12
}
],
"total_branches_live": 512,
"concentration_hhi_label": "Herfindahl-Hirschman Index (0-10000 scale) of owner share of live branches; conventionally, <1500 is unconcentrated, 1500-2500 moderately concentrated, >2500 highly concentrated"
}
}
},
"schema": {
"type": "object",
"$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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"top": {
"type": "integer",
"minimum": 1
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"basis": {
"type": "string"
},
"scope": {
"type": "string"
},
"network": {
"type": "string"
},
"chain_id": {
"type": "integer"
},
"top_owners": {
"type": "array",
"items": {
"type": "object",
"properties": {
"owner": {
"type": "string"
},
"branches": {
"type": "integer"
},
"charters": {
"type": "integer"
},
"share_of_live_branches": {
"type": "number"
}
}
}
},
"as_of_block": {
"type": "integer"
},
"cohort_split": {
"type": "object",
"properties": {
"auction": {
"type": "object",
"properties": {
"branches": {
"type": "integer"
},
"charters": {
"type": "integer"
},
"retirements": {
"type": "integer"
},
"revocations": {
"type": "integer"
}
}
},
"genesis": {
"type": "object",
"properties": {
"branches": {
"type": "integer"
},
"charters": {
"type": "integer"
},
"retirements": {
"type": "integer"
},
"revocations": {
"type": "integer"
}
}
},
"unknown": {
"type": "object",
"properties": {
"branches": {
"type": "integer"
},
"charters": {
"type": "integer"
},
"retirements": {
"type": "integer"
},
"revocations": {
"type": "integer"
}
}
}
}
},
"live_charters": {
"type": "integer"
},
"unique_owners": {
"type": "integer"
},
"burned_charters": {
"type": "integer"
},
"concentration_hhi": {
"type": "number"
},
"branch_distribution": {
"type": "array",
"items": {
"type": "object",
"properties": {
"bucket": {
"type": "string"
},
"charters": {
"type": "integer"
}
}
}
},
"total_branches_live": {
"type": "integer"
},
"concentration_hhi_label": {
"type": "string"
}
},
"description": "Endpoint-specific response payload"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-23 01:11Z
- Last indexed by Roundhouse
- 2026-09-24 07:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-17 16:15Z
- x402 version
- 2
- Max timeout
- 3600s
- 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. 7 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 api.onesource.io 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=api.onesource.io' 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://api.onesource.io/standard/v1/holders/concentration, 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.