AnswerPool 13F Holders
List institutional holders of one issuer from the latest 13F period — manager, value, shares and put/call, ranked by position size. Query by as-filed issuer name or CUSIP; joins by name/CIK only (no identifier mapping).
OtherLiveeip155:8453Exactvia cdp
Sec13fHoldersOwnershipInstitutional
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 22 snapshots so far.
$2.04
Verified settled volume
90 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-02 22:28Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb3ba3Ca99F9742b32fC527CF62688C83b39AED8cThe 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.
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≈ $0.02 USD
on Base · exact scheme
Pay 0.02 USDC on Base to 0xb3ba…AED8c. The signed payment is good for 5 minutes.
- Paid to
- 0xb3ba…AED8c
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 20000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb3ba3Ca99F9742b32fC527CF62688C83b39AED8c",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"issuer": "NVIDIA"
}
},
"output": {
"type": "json",
"example": {
"as_of": "2026-08-31T17:00:00Z",
"count": 1,
"period": "2025-12-31",
"holders": [
{
"cusip": "67066G104",
"issuer": "NVIDIA CORP",
"shares": 4000,
"put_call": null,
"accession": "0001566307-26-000071",
"value_usd": 500000,
"manager_cik": "0001566307",
"manager_name": "Ramiah Investment Group"
}
],
"periods_held": [
"2025-12-31",
"2025-09-30"
]
}
}
},
"schema": {
"type": "object",
"$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",
"title": "HoldersIn",
"properties": {
"cusip": {
"anyOf": [
{
"type": "string",
"maxLength": 9,
"minLength": 9
},
{
"type": "null"
}
],
"title": "Cusip",
"default": null
},
"limit": {
"type": "integer",
"title": "Limit",
"default": 25,
"maximum": 100,
"minimum": 1
},
"issuer": {
"anyOf": [
{
"type": "string",
"maxLength": 80,
"minLength": 2
},
{
"type": "null"
}
],
"title": "Issuer",
"default": null,
"description": "Issuer name prefix as filed, e.g. NVIDIA"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"title": "HoldersOutput",
"required": [
"as_of",
"periods_held",
"period",
"count",
"holders"
],
"properties": {
"as_of": {
"type": "string",
"title": "As Of"
},
"count": {
"type": "integer",
"title": "Count"
},
"period": {
"type": "string",
"title": "Period"
},
"holders": {
"type": "array",
"items": {
"type": "object",
"title": "HolderRow",
"required": [
"manager_cik",
"manager_name",
"value_usd",
"shares",
"put_call",
"issuer",
"cusip",
"accession"
],
"properties": {
"cusip": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Cusip"
},
"issuer": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Issuer"
},
"shares": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Shares"
},
"put_call": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Put Call"
},
"accession": {
"type": "string",
"title": "Accession"
},
"value_usd": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Value Usd"
},
"manager_cik": {
"type": "string",
"title": "Manager Cik"
},
"manager_name": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Manager Name"
}
}
},
"title": "Holders"
},
"method_id": {
"type": "string",
"title": "Method Id",
"default": "sec_events_rules_v1"
},
"disclaimer": {
"type": "string",
"title": "Disclaimer",
"default": "From SEC Form 13F filings (public domain), reported quarterly with a filing lag; identifiers served as filed. Not investment advice."
},
"periods_held": {
"type": "array",
"items": {
"type": "string"
},
"title": "Periods Held"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-02 22:28Z
- Last indexed by Roundhouse
- 2026-09-24 12:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 15:16Z
- 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. 22 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 AnswerPool 13F Holders 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=AnswerPool%2013F%20Holders' 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://answerpool.io/v1/sec/13f/holders, 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.