answerpool.io
Get the US federal money trail for a technology term — returns USAspending obligations by fiscal year with 3y growth, top recipients, NIH grant counts and recent projects, plus flags. Use instead of joining two federal APIs.
SearchLiveeip155:8453Exactvia cdp
UsaspendingNih-grantsFederal-fundingDeep-techMarket-research
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 23 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 22:26Z
—
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≈ $0.02 USD
on Base · exact scheme
Pay 0.02 USDC on Base to 0xb3ba…AED8c. The signed payment is good for 5 minutes.
- Paid to
- 0xb3ba…AED8c
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 20000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb3ba3Ca99F9742b32fC527CF62688C83b39AED8c",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"term": "quantum computing"
}
},
"output": {
"type": "json",
"example": {
"term": "quantum computing",
"as_of": "2026-08-30T18:00:00Z",
"flags": [
"partial_current_fy",
"nih_active"
],
"fiscal_years": [
2022,
2023,
2024,
2025,
2026
],
"nih_growth_3y": 0.19,
"top_recipients": [
{
"uei": "UYTTZT6G9DT1",
"name": "UNIVERSITY OF CALIFORNIA, SAN DIEGO",
"amount_usd": 44900000
}
],
"usaspending_by_fy": [
{
"fiscal_year": 2025,
"grant_obligations_usd": 57100000,
"total_obligations_usd": 237100000,
"contract_obligations_usd": 180000000
}
],
"nih_projects_by_fy": {
"2024": 47,
"2025": 37
},
"nih_recent_projects": [
{
"title": "Quantum sensing for neuroimaging",
"fiscal_year": 2026,
"project_num": "1R01EB035892-01",
"organization": "MIT",
"award_amount_usd": 612000
}
],
"usaspending_growth_3y": 0.48
}
}
},
"schema": {
"type": "object",
"$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": "FundingInput",
"required": [
"term"
],
"properties": {
"term": {
"type": "string",
"title": "Term",
"maxLength": 200,
"minLength": 2,
"description": "Technology keyword, e.g. 'quantum computing'."
},
"years": {
"type": "integer",
"title": "Years",
"default": 5,
"maximum": 8,
"minimum": 2,
"description": "How many fiscal years back to aggregate."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"title": "FundingOutput",
"required": [
"as_of",
"term",
"fiscal_years",
"usaspending_by_fy",
"usaspending_growth_3y",
"top_recipients",
"nih_projects_by_fy",
"nih_growth_3y",
"nih_recent_projects",
"flags"
],
"properties": {
"term": {
"type": "string",
"title": "Term"
},
"as_of": {
"type": "string",
"title": "As Of"
},
"flags": {
"type": "array",
"items": {
"type": "string"
},
"title": "Flags"
},
"method_id": {
"type": "string",
"title": "Method Id",
"default": "funding_signals_rules_v1"
},
"disclaimer": {
"type": "string",
"title": "Disclaimer",
"default": "Keyword-matched US federal spending (USAspending) and NIH grants (RePORTER), both public domain; an activity signal, not a census of the technology and not investment advice."
},
"fiscal_years": {
"type": "array",
"items": {
"type": "integer"
},
"title": "Fiscal Years"
},
"nih_growth_3y": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Nih Growth 3Y"
},
"top_recipients": {
"type": "array",
"items": {
"type": "object",
"title": "Recipient",
"required": [
"name",
"amount_usd",
"uei"
],
"properties": {
"uei": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Uei"
},
"name": {
"type": "string",
"title": "Name"
},
"amount_usd": {
"type": "number",
"title": "Amount Usd"
}
}
},
"title": "Top Recipients"
},
"usaspending_by_fy": {
"type": "array",
"items": {
"type": "object",
"title": "FiscalYearSpend",
"required": [
"fiscal_year",
"total_obligations_usd",
"contract_obligations_usd",
"grant_obligations_usd"
],
"properties": {
"fiscal_year": {
"type": "integer",
"title": "Fiscal Year"
},
"grant_obligations_usd": {
"type": "number",
"title": "Grant Obligations Usd"
},
"total_obligations_usd": {
"type": "number",
"title": "Total Obligations Usd"
},
"contract_obligations_usd": {
"type": "number",
"title": "Contract Obligations Usd"
}
}
},
"title": "Usaspending By Fy"
},
"nih_projects_by_fy": {
"type": "object",
"title": "Nih Projects By Fy",
"additionalProperties": {
"type": "integer"
}
},
"nih_recent_projects": {
"type": "array",
"items": {
"type": "object",
"title": "NihProject",
"required": [
"project_num",
"title",
"organization",
"award_amount_usd",
"fiscal_year"
],
"properties": {
"title": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Title"
},
"fiscal_year": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"title": "Fiscal Year"
},
"project_num": {
"type": "string",
"title": "Project Num"
},
"organization": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Organization"
},
"award_amount_usd": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Award Amount Usd"
}
}
},
"title": "Nih Recent Projects"
},
"usaspending_growth_3y": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "Usaspending Growth 3Y",
"description": "Total obligations, last complete FY vs 3 FYs earlier, as a ratio - 1; null if base is 0."
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-02 22:26Z
- Last indexed by Roundhouse
- 2026-09-25 07:00Z
- 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. 23 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.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=answerpool.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://answerpool.io/v1/funding/signals, 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.