Roundhouse

Crypto Market Data

Crypto Fear and Greed index with the previous value, trending coins, market breadth, mood and volatility regime.

TradingLiveeip155:8453Exactvia cdp
https://crypto-market-data.zafermemon87.workers.dev/v1/sentiment
CryptoMarket-dataLiquidationsWhalesHyperliquid
Calls · 30d
3
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.
$1.61
Verified settled volume
105 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
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 2026-10-25 18:36Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xa41015022322640f03a895bc439da80ddfd73954

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.

0.003USDC≈ $0.003 USD
on Base · exact scheme

Pay 0.003 USDC on Base to 0xa410…73954. The signed payment is good for 5 minutes.

Paid to
0xa410…73954
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
3000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xa41015022322640f03a895bc439da80ddfd73954",
    "amount": "3000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "limit": 5
        }
      },
      "output": {
        "type": "json",
        "example": {
          "mood": "Risk-off",
          "note": "Public market data, refreshed every minute. Not financial advice.",
          "tool": "sentiment",
          "as_of": "2026-10-23T20:03:00+05:30",
          "plain": "Fear & Greed 50 (Neutral, was 68); mood Risk-off; trending: UHI, DACITY, PEARL, AERO, PENGU.",
          "engine": "data-1.0",
          "breadth": {
            "up_1h": 0.2,
            "up_24h": 0.28
          },
          "charged": true,
          "trending": [
            {
              "name": "Universal High Income",
              "rank": 1,
              "token": "UHI",
              "change_24h_pct": 16.37
            },
            {
              "name": "Dacity Coin",
              "rank": 2,
              "token": "DACITY",
              "change_24h_pct": 175.01
            }
          ],
          "price_usd": null,
          "data_age_s": 60,
          "fear_greed": {
            "label": "Neutral",
            "value": 50,
            "previous": 68
          },
          "mood_score": -3,
          "snapshot_seal": "eb08dce6d854951431a0fb2732282227e1d954ec072422c9bfc5bee2f3ed695f",
          "volume_24h_usd": 3131469154,
          "volatility_regime": "normal",
          "btc_share_of_volume": 0.343
        }
      }
    },
    "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"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "limit": {
                  "type": "integer",
                  "maximum": 7,
                  "minimum": 1,
                  "description": "How many trending coins (1-7, default 7)"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-25 18:36Z
Last indexed by Roundhouse
2026-10-26 17:20Z
Last enriched (probe, favicon, geo)
2026-10-24 00:46Z
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. 3 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 Crypto Market Data 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=Crypto%20Market%20Data'
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://crypto-market-data.zafermemon87.workers.dev/v1/sentiment, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.