Roundhouse

Kronos Crypto Data & Forecasts

Paid market-intelligence API over x402

TradingLiveeip155:8453Exactvia cdp
https://kronossignals.com/api/v1/market-pulse
Market-pulseChange-feedMonitoringFundingOpen-interest
Calls · 30d
6↓ 21%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$96.98
Verified settled volume
A floor: summed over 5,000 of 5,757 verified settlements.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
6
Calls · 30d
Upstream's own call count for this endpoint, not ours.
4
Unique payers · 30d
Last called 2026-09-23 12:02Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x36038e1d712c5e39f35952164ec58ec2b96caee7

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.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x36038e1d712c5e39f35952164ec58ec2b96caee7",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://kronossignals.com/api/v1/market-pulse",
    "tags": [
      "market-pulse",
      "change-feed",
      "monitoring",
      "funding",
      "open-interest",
      "alerts",
      "crypto",
      "ai-agents",
      "x402"
    ],
    "mimeType": "application/json",
    "description": "Material-change feed for up to 5 crypto assets. Pass the cursor from your last call and receive ONLY what changed since: funding sign or band, funding trend, open-interest regime, alert set, and source stale/recovered. Returns an explicit no-change packet rather than pretending, plus per-asset freshness and a next-poll time derived from the real 5-minute collection cadence. Market data, not advice. $0.02 USDC via x402.",
    "serviceName": "Kronos Crypto Data & Forecasts"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "pathParams": {},
          "queryParams": {
            "since": "<cursor from your previous call>",
            "assets": "btc,eth"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "changes": [
              {
                "type": "funding_sign_changed",
                "asset": "btc",
                "current": {
                  "value": "shorts_pay_longs"
                },
                "previous": {
                  "value": "longs_pay_shorts"
                },
                "freshness": {
                  "status": "fresh",
                  "age_seconds": 120
                },
                "observed_at": "2026-01-01T00:02:00.000Z",
                "source_timestamp": "2026-01-01T00:00:00.000Z"
              }
            ],
            "baseline": false,
            "coverage": [
              {
                "asset": "btc",
                "status": "ok",
                "source_timestamp": "2026-01-01T00:00:00.000Z"
              }
            ],
            "disclaimer": "Market data, not financial advice.",
            "no_changes": false,
            "next_cursor": "<opaque>",
            "generated_at": "2026-01-01T00:02:00.000Z",
            "rules_version": "2",
            "schema_version": "1",
            "next_recommended_poll_at": "2026-01-01T00:07:00.000Z"
          },
          "example_kind": "illustrative_schema_only",
          "example_note": "Placeholder values and timestamps, not market data."
        }
      },
      "schema": {
        "type": "object",
        "$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"
                ],
                "type": "string"
              },
              "pathParams": {
                "type": "object"
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "since": {
                    "type": "string",
                    "description": "Opaque cursor returned as next_cursor by a previous call. Omit on first call."
                  },
                  "assets": {
                    "type": "string",
                    "description": "Comma-separated asset slugs, max 5. Defaults to btc."
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      },
      "routeTemplate": ":var1"
    }
  },
  "x402Version": 2
}

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 0x3603…caee7. The signed payment is good for 5 minutes.

Paid to
0x3603…caee7
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": "0x36038e1d712c5e39f35952164ec58ec2b96caee7",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "pathParams": {},
        "queryParams": {
          "since": "<cursor from your previous call>",
          "assets": "btc,eth"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "changes": [
            {
              "type": "funding_sign_changed",
              "asset": "btc",
              "current": {
                "value": "shorts_pay_longs"
              },
              "previous": {
                "value": "longs_pay_shorts"
              },
              "freshness": {
                "status": "fresh",
                "age_seconds": 120
              },
              "observed_at": "2026-01-01T00:02:00.000Z",
              "source_timestamp": "2026-01-01T00:00:00.000Z"
            }
          ],
          "baseline": false,
          "coverage": [
            {
              "asset": "btc",
              "status": "ok",
              "source_timestamp": "2026-01-01T00:00:00.000Z"
            }
          ],
          "disclaimer": "Market data, not financial advice.",
          "no_changes": false,
          "next_cursor": "<opaque>",
          "generated_at": "2026-01-01T00:02:00.000Z",
          "rules_version": "2",
          "schema_version": "1",
          "next_recommended_poll_at": "2026-01-01T00:07:00.000Z"
        },
        "example_kind": "illustrative_schema_only",
        "example_note": "Placeholder values and timestamps, not market data."
      }
    },
    "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"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "since": {
                  "type": "string",
                  "description": "Opaque cursor returned as next_cursor by a previous call. Omit on first call."
                },
                "assets": {
                  "type": "string",
                  "description": "Comma-separated asset slugs, max 5. Defaults to btc."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    },
    "routeTemplate": ":var1"
  }
}

Provenance

Seen in the source catalog
2026-09-23 12:02Z
Last indexed by Roundhouse
2026-09-24 10:40Z
Last enriched (probe, favicon, geo)
2026-09-22 20:45Z
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 Kronos Crypto Data & Forecasts 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=Kronos%20Crypto%20Data%20%26%20Forecasts'
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://kronossignals.com/api/v1/market-pulse, 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.