Index Constituents
S&P 500, Nasdaq-100, and Russell 2000 constituents and GICS sectors.
TradingLiveeip155:8453Exactvia cdp
IndicesConstituentsSectorsFinancex402
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 6 snapshots so far.
—
Verified settled volume
0 settlements proven x402 by their on-chain EIP-3009 marker.
$0.011
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-19 15:51Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x5037546753d64F77A6fA95B6f85659B6a4A7F6FDThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"mock": false,
"chain": "base",
"error": "payment_required",
"resource": "https://api.edifiedlab.com/v1/market/indices",
"trace_id": "139c44e79ba9894e51f12e85db3bc206",
"amount_usd": 0.011,
"expires_at": 1789835131.2662206,
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"index": "sp500"
}
},
"output": {
"type": "json",
"example": {
"index": "sp500",
"action": "lookup",
"source": "live",
"payload": "indices",
"degraded": false,
"constituents": [
{
"sector": "XLK",
"ticker": "AAPL"
}
],
"constituent_count": 503
}
}
},
"schema": {
"type": "object",
"$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",
"required": [
"index"
],
"properties": {
"index": {
"enum": [
"NASDAQ",
"NASDAQ100",
"NDX",
"RUSSELL",
"RUSSELL2000",
"RUT",
"S&P500",
"SP",
"SP500",
"nasdaq",
"nasdaq100",
"ndx",
"russell",
"russell2000",
"rut",
"s&p500",
"sp",
"sp500"
],
"type": "string",
"description": "Case-insensitive. Aliases ndx/nasdaq→nasdaq100, rut/russell→russell2000, sp/s&p500→sp500. SPX is not an index."
},
"ticker": {
"type": "string",
"minLength": 1
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"payload",
"action",
"index",
"constituent_count",
"constituents",
"degraded",
"source"
],
"properties": {
"index": {
"type": "string"
},
"action": {
"type": "string",
"const": "lookup"
},
"source": {
"type": "string",
"const": "live"
},
"payload": {
"type": "string",
"const": "indices"
},
"degraded": {
"type": "boolean",
"const": false
},
"constituents": {
"type": "array",
"items": {
"type": "object"
}
},
"constituent_count": {
"type": "integer"
}
}
}
}
}
}
}
}
},
"description": "S&P 500, Nasdaq-100, and Russell 2000 constituents and GICS sectors.",
"challenge_id": "cdp-94e661c48b63f97e345f7a24ec4b5804",
"payment_required": true,
"paymentRequirements": {
"tags": [
"indices",
"constituents",
"sectors",
"finance",
"x402"
],
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USDC",
"chainId": 8453,
"version": "2",
"challengeId": "cdp-94e661c48b63f97e345f7a24ec4b5804",
"spenderAddress": "0x402085c248EeA27D92E8b30b2C58ed07f9E20001",
"assetTransferMethod": "permit2"
},
"payTo": "0x5037546753d64F77A6fA95B6f85659B6a4A7F6FD",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://api.edifiedlab.com/v1/market/indices",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"index": "sp500"
}
},
"output": {
"type": "json",
"example": {
"index": "sp500",
"action": "lookup",
"source": "live",
"payload": "indices",
"degraded": false,
"constituents": [
{
"sector": "XLK",
"ticker": "AAPL"
}
],
"constituent_count": 503
}
}
},
"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",
"required": [
"index"
],
"properties": {
"index": {
"enum": [
"NASDAQ",
"NASDAQ100",
"NDX",
"RUSSELL",
"RUSSELL2000",
"RUT",
"S&P500",
"SP",
"SP500",
"nasdaq",
"nasdaq100",
"ndx",
"russell",
"russell2000",
"rut",
"s&p500",
"sp",
"sp500"
],
"type": "string",
"description": "Case-insensitive. Aliases ndx/nasdaq→nasdaq100, rut/russell→russell2000, sp/s&p500→sp500. SPX is not an index."
},
"ticker": {
"type": "string",
"minLength": 1
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"payload",
"action",
"index",
"constituent_count",
"constituents",
"degraded",
"source"
],
"properties": {
"index": {
"type": "string"
},
"action": {
"type": "string",
"const": "lookup"
},
"source": {
"type": "string",
"const": "live"
},
"payload": {
"type": "string",
"const": "indices"
},
"degraded": {
"type": "boolean",
"const": false
},
"constituents": {
"type": "array",
"items": {
"type": "object"
}
},
"constituent_count": {
"type": "integer"
}
}
}
}
}
}
}
}
},
"description": "S&P 500, Nasdaq-100, and Russell 2000 constituents and GICS sectors.",
"serviceName": "Index Constituents",
"maxAmountRequired": "11000",
"maxTimeoutSeconds": 600
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.011USDC≈ $0.011 USD
on Base · exact scheme
Pay 0.011 USDC on Base to 0x5037…7F6FD. The signed payment is good for 10 minutes.
- Paid to
- 0x5037…7F6FD
- USD Coin contract
- 0x8335…02913
- Payment window
- 10 minutes
- As published
- 11000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USDC",
"chainId": 8453,
"version": "2",
"challengeId": "cdp-75ae5c021c144873d66424f4f10f904e",
"spenderAddress": "0x402085c248EeA27D92E8b30b2C58ed07f9E20001",
"assetTransferMethod": "permit2"
},
"payTo": "0x5037546753d64F77A6fA95B6f85659B6a4A7F6FD",
"amount": "11000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"index": "sp500"
}
},
"output": {
"type": "json",
"example": {
"index": "sp500",
"action": "lookup",
"source": "live",
"payload": "indices",
"degraded": false,
"constituents": [
{
"sector": "XLK",
"ticker": "AAPL"
}
],
"constituent_count": 503
}
}
},
"schema": {
"type": "object",
"$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",
"required": [
"index"
],
"properties": {
"index": {
"enum": [
"NASDAQ",
"NASDAQ100",
"NDX",
"RUSSELL",
"RUSSELL2000",
"RUT",
"S&P500",
"SP",
"SP500",
"nasdaq",
"nasdaq100",
"ndx",
"russell",
"russell2000",
"rut",
"s&p500",
"sp",
"sp500"
],
"type": "string",
"description": "Case-insensitive. Aliases ndx/nasdaq→nasdaq100, rut/russell→russell2000, sp/s&p500→sp500. SPX is not an index."
},
"ticker": {
"type": "string",
"minLength": 1
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"payload",
"action",
"index",
"constituent_count",
"constituents",
"degraded",
"source"
],
"properties": {
"index": {
"type": "string"
},
"action": {
"type": "string",
"const": "lookup"
},
"source": {
"type": "string",
"const": "live"
},
"payload": {
"type": "string",
"const": "indices"
},
"degraded": {
"type": "boolean",
"const": false
},
"constituents": {
"type": "array",
"items": {
"type": "object"
}
},
"constituent_count": {
"type": "integer"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-19 15:51Z
- Last indexed by Roundhouse
- 2026-09-25 06:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-19 16:15Z
- x402 version
- 2
- Max timeout
- 600s
- 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. 6 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 Index Constituents 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=Index%20Constituents' 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.edifiedlab.com/v1/market/indices, 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.