Roundhouse AI

AnswerPool XBRL Frame

AnswerPool turns SEC EDGAR, the Federal Register, USAspending, NIH and OpenAlex into structured JSON answers that AI agents and developers fetch in one call. From $0.005 per call, paid by card credits or USDC (x402). Free tier, MCP server, full provenance.

DataLiveeip155:8453Exactvia cdp
https://answerpool.io/v1/sec/xbrl/frame
SecXbrlFrameRankMarket
Calls · 30d
3→ 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.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-09-06 00:15Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb3ba3Ca99F9742b32fC527CF62688C83b39AED8c

The 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.

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 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
50000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xb3ba3Ca99F9742b32fC527CF62688C83b39AED8c",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "metric": "rnd_expense",
          "period": "CY2025Q1"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "tag": "Revenues",
          "top": [
            {
              "cik": "0000320193",
              "value": 94000000000,
              "entity": "Apple Inc."
            }
          ],
          "as_of": "2026-08-31T14:00:00Z",
          "metric": "revenue",
          "period": "CY2025Q1",
          "total_filers": 4000
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "title": "FrameIn",
              "required": [
                "metric",
                "period"
              ],
              "properties": {
                "limit": {
                  "type": "integer",
                  "title": "Limit",
                  "default": 50,
                  "maximum": 200,
                  "minimum": 1,
                  "description": "Number of filers to return, ranked by reported value descending; total_filers reports the full population. Default 50."
                },
                "metric": {
                  "type": "string",
                  "title": "Metric",
                  "maxLength": 120,
                  "description": "Required metric key from /v1/sec/xbrl/metrics (e.g. revenue) or a raw US-GAAP XBRL concept as us-gaap:<Tag>; one tag is queried across all filers."
                },
                "period": {
                  "type": "string",
                  "title": "Period",
                  "pattern": "^CY\\d{4}(Q[1-4])?I?$",
                  "maxLength": 12,
                  "description": "e.g. CY2025, CY2025Q1, CY2025Q1I"
                }
              },
              "additionalProperties": false
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-06 00:15Z
Last indexed by Roundhouse
2026-09-24 14:10Z
Last enriched (probe, favicon, geo)
2026-09-11 14:46Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
Report

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.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service AnswerPool XBRL Frame 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%20XBRL%20Frame'
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/xbrl/frame, 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.