Roundhouse

anansidata.xyz

A pay-per-call data API for AI agents. We record decision data that no one archives — prediction-market books, model pricing, chain state — and sell it per query over x402 on Base.

InferenceLiveeip155:8453Exactvia cdp
https://anansidata.xyz/paid/intel/model-advisor
Calls · 30d
1↑ 14%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$18.79
Verified settled volume
210 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.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-17 06:12Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x6D7a2D65B26a87134c0571fb1baaA248eB0a291B

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.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "what": "pay-per-call data for AI agents; the signed x402 offer is in the payment-required response header (v2, exact scheme, USDC on Base)",
  "error": "payment required",
  "human": "https://anansidata.xyz/buy.html",
  "price": "typically USD 0.01-0.05 per call; the exact price is in the payment-required header",
  "catalog": "/datasets",
  "how_to_pay": "https://anansidata.xyz/agents.html",
  "try_free_first": "/free/sample?dataset=cloud_spot"
}

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 0x6D7a…a291B. The signed payment is good for 5 minutes.

Paid to
0x6D7a…a291B
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": "0x6D7a2D65B26a87134c0571fb1baaA248eB0a291B",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "modality": "text",
          "window_s": 604800,
          "min_context": 128000,
          "max_prompt_price": 0.000001
        },
        "discoverable": true
      },
      "output": {
        "type": "object",
        "format": "application/json",
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "results"
          ],
          "properties": {
            "charged": {
              "type": "boolean",
              "description": "Whether payment settled for this call."
            },
            "results": {
              "type": "object",
              "properties": {
                "candidates": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "model": {
                        "type": "string"
                      },
                      "context": {
                        "type": "integer",
                        "description": "Tokens."
                      },
                      "price_prompt": {
                        "type": "number",
                        "description": "USD per prompt token."
                      }
                    }
                  }
                },
                "deprecations": {
                  "type": "array",
                  "items": {
                    "type": "object"
                  }
                },
                "matching_count": {
                  "type": "integer"
                },
                "price_changes_in_window": {
                  "type": "array",
                  "items": {
                    "type": "object"
                  }
                }
              },
              "description": "Ranked candidates plus the changes affecting them."
            },
            "provenance": {
              "type": "object",
              "properties": {
                "method": {
                  "type": "string"
                },
                "source": {
                  "type": "string",
                  "description": "Upstream API or feed."
                },
                "dataset": {
                  "type": "string"
                },
                "license": {
                  "enum": [
                    "public",
                    "derived_only",
                    "internal"
                  ],
                  "type": "string",
                  "description": "public: raw values redistributable. derived_only: only computed analytics are served. internal: never served."
                },
                "cadence_s": {
                  "type": [
                    "integer",
                    "null"
                  ],
                  "description": "Seconds between observations."
                }
              },
              "description": "Where the data came from and under what terms."
            }
          }
        },
        "example": {
          "charged": true,
          "results": {
            "candidates": [
              {
                "model": "vendor/model",
                "context": 512000,
                "price_prompt": 0
              }
            ],
            "deprecations": [],
            "matching_count": 364,
            "price_changes_in_window": []
          }
        }
      }
    },
    "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": {
                "modality": {
                  "type": "string",
                  "description": "Substring of the modality string, e.g. text or image."
                },
                "window_s": {
                  "type": "integer",
                  "default": 604800,
                  "description": "Change look-back in SECONDS."
                },
                "min_context": {
                  "type": "integer",
                  "default": 0,
                  "description": "Minimum context window in TOKENS."
                },
                "max_prompt_price": {
                  "type": "number",
                  "description": "Max USD PER PROMPT TOKEN (not per million)."
                }
              }
            }
          }
        },
        "output": {
          "type": "object"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-17 06:12Z
Last indexed by Roundhouse
2026-09-24 09:50Z
Last enriched (probe, favicon, geo)
2026-09-23 10:15Z
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. 30 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 anansidata.xyz 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=anansidata.xyz'
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://anansidata.xyz/paid/intel/model-advisor, 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.