Crypto fear and greed index

641 pay-per-call tools for AI agents over HTTP or MCP, from $0.002 a call, most at $0.01. Every caller gets 25 free calls; then pay per call in USDC via x402 (Base, Polygon, Arbitrum, Solana) or by card with prepaid credits from /credits. No account needed; failed calls are never charged; per-tool reliability is public at /status. Crypto: token prices and wallet portfolios from Uniswap v3, chain reads on Base, Ethereum, Arbitrum, Optimism and Polygon, OFAC sanctions screening. Web: Read public s

TradingLiveeip155:8453Exactvia cdp
Fear-and-greed-indexCrypto-fear-greedMarket-sentimentCrypto-sentimentBitcoin
Calls · 30d
3
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 6 snapshots so far.
$9.62
Verified settled volume
1,119 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
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.
2
Unique payers · 30d
Last called 2026-11-12 08:01Z
$0.002
Upstream on-chain volume
1 transactions, checked 2026-11-07 13:15Z
Paid to
0x6293ded2684F1A76E26bEcef87c137D691Fbf800

The wallet the 402 directs payment to. Its full payment record 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.

Recent payments · which agents last used it

Every indexed settlement paid to this service’s wallet, newest first. The index does not record which endpoint a payment was for, so if this wallet serves more than one endpoint, the rows include payments for the others. Paged up to the newest 5,000; the full history is on the merchant page.

Payer PayeeChainAmountx402RouteAgeTxn hash
0x746a…c6410x6293…f800BaseBase$0.002100%coinbase5h ago0x1bd044…862f48
0x746a…c6410x6293…f800BaseBase$0.002100%coinbase5h ago0xa7dc6d…4f32bb
0x746a…c6410x6293…f800BaseBase$0.002100%coinbase5h ago0xfb82f5…755b8f
0x746a…c6410x6293…f800BaseBase$0.002100%coinbase5h ago0xee569e…48c26a
0x746a…c6410x6293…f800BaseBase$0.002100%coinbase5h ago0xf302a8…8e1baf
0x746a…c6410x6293…f800BaseBase$0.002100%coinbase5h ago0x88e281…3c4f75
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x307344…b5a601
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0xaf7656…499940
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x09704c…6a2456
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0xd2e5af…dc0349
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x3ce10c…85b107
0x4d4a…f8d30x6293…f800BaseBase$0.001100%coinbase5h ago0xd5c2f4…9a95d7
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0xa50f2b…949c41
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0xc3fa3b…33dc16
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x7e1aa3…210a9e
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x0f8596…3c1d91
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x7b323f…327677
0x4d4a…f8d30x6293…f800BaseBase$0.05100%coinbase5h ago0x2f9458…ce95ad
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0xa80a76…be5db9
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x4dad43…7da001
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0xcb5e16…368c08
0x4d4a…f8d30x6293…f800BaseBase$0.001100%coinbase5h ago0xaac8de…4b0daf
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x5e9662…f9c9a3
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x9f7373…11d288
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase5h ago0x35686c…b141d4

Live 402 challenge

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

{
  "hint": "Try it free: add trial=1 to this request (25 free successful calls per caller). Paid x402 tool. x402 v2 clients: terms in the PAYMENT-REQUIRED header, pay with PAYMENT-SIGNATURE (for example @x402/fetch or AgentCash). x402 v1 clients: terms in this body, pay with X-PAYMENT. No wallet? Pay $1 by card in one step at https://buy.stripe.com/fZufZhdSGgq3bFU5MNbII06 (1,000 credits, about 500 calls at $0.002; the key is shown right after payment; other packs at https://agent-data-tools.revmesh2074.workers.dev/credits), then send the key as Authorization: Bearer adt_… or, if your client can only fetch a URL, add &api_key=adt_… to this URL. Free example output: add sample=1. Free docs: https://agent-data-tools.revmesh2074.workers.dev/llms.txt",
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x2074C40346Ae2A90e0E4A391bceE6F16BF5277f5",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://agent-data-tools.revmesh2074.workers.dev/crypto/fear-and-greed",
      "description": "Crypto Fear and Greed Index today (0 = extreme fear, 100 = extreme greed) from alternative.me: the value and its label, the change against 1, 7 and 30 days ago, the low, high and average over the window, and daily history up to 90 days. Use as a market-sentiment input for a trading agent, a dashboard or a daily brief.",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "days": {
              "type": "integer",
              "required": false,
              "description": "Days of history, 1-90 (default 30)"
            }
          },
          "discoverable": true
        },
        "output": {
          "date": "2026-10-24",
          "range": {
            "low": 38,
            "days": 30,
            "high": 72,
            "average": 54.2
          },
          "value": 51,
          "change": {
            "vs1d": 1,
            "vs7d": -17,
            "vs30d": 9
          },
          "source": "alternative.me",
          "history": [
            {
              "date": "2026-10-24",
              "value": 51,
              "classification": "Neutral"
            }
          ],
          "attribution": "Crypto Fear & Greed Index by alternative.me (https://alternative.me/crypto/fear-and-greed-index/)",
          "classification": "Neutral",
          "nextUpdateSeconds": 62493
        }
      },
      "maxAmountRequired": "2000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cef5e3811e1192ce70d8cc03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x2074C40346Ae2A90e0E4A391bceE6F16BF5277f5",
      "scheme": "exact",
      "network": "polygon",
      "mimeType": "application/json",
      "resource": "https://agent-data-tools.revmesh2074.workers.dev/crypto/fear-and-greed",
      "description": "Crypto Fear and Greed Index today (0 = extreme fear, 100 = extreme greed) from alternative.me: the value and its label, the change against 1, 7 and 30 days ago, the low, high and average over the window, and daily history up to 90 days. Use as a market-sentiment input for a trading agent, a dashboard or a daily brief.",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "days": {
              "type": "integer",
              "required": false,
              "description": "Days of history, 1-90 (default 30)"
            }
          },
          "discoverable": true
        },
        "output": {
          "date": "2026-10-24",
          "range": {
            "low": 38,
            "days": 30,
            "high": 72,
            "average": 54.2
          },
          "value": 51,
          "change": {
            "vs1d": 1,
            "vs7d": -17,
            "vs30d": 9
          },
          "source": "alternative.me",
          "history": [
            {
              "date": "2026-10-24",
              "value": 51,
              "classification": "Neutral"
            }
          ],
          "attribution": "Crypto Fear & Greed Index by alternative.me (https://alternative.me/crypto/fear-and-greed-index/)",
          "classification": "Neutral",
          "nextUpdateSeconds": 62493
        }
      },
      "maxAmountRequired": "2000",
      "maxTimeoutSeconds": 300
    }
  ],
  "related": [
    {
      "url": "https://agent-data-tools.revmesh2074.workers.dev/token-report",
      "name": "Honeypot token check, token risk",
      "price": "$0.01"
    },
    {
      "url": "https://agent-data-tools.revmesh2074.workers.dev/token",
      "name": "Token info, Base ERC-20 facts",
      "price": "$0.01"
    },
    {
      "url": "https://agent-data-tools.revmesh2074.workers.dev/wallet-audit",
      "name": "Wallet risk check",
      "price": "$0.01"
    }
  ],
  "resource": {
    "url": "https://agent-data-tools.revmesh2074.workers.dev/crypto/fear-and-greed",
    "tags": [
      "fear-and-greed-index",
      "crypto-fear-greed",
      "market-sentiment",
      "crypto-sentiment",
      "bitcoin"
    ],
    "iconUrl": "https://agent-data-tools.revmesh2074.workers.dev/logo.png",
    "mimeType": "application/json",
    "description": "Crypto Fear and Greed Index today (0 = extreme fear, 100 = extreme greed) from alternative.me: the value and its label, the change against 1, 7 and 30 days ago, the low, high and average over the window, and daily history up to 90 days. Use as a market-sentiment input for a trading agent, a dashboard or a daily brief.",
    "serviceName": "Crypto fear and greed index"
  },
  "x402Version": 1
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying: a price here is a claim, not a quote.

0.002USDC≈ $0.002 USD
on Base · exact scheme

Pay 0.002 USDC on Base to 0x6293…bf800. The signed payment is good for 5 minutes.

USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
2000 smallest units
2000units
on Polygon · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Token contract
0x3c49…c3359
Payment window
5 minutes
2000units
on Arbitrum · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Token contract
0xaf88…e5831
Payment window
5 minutes
2000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Token contract
EPjFWd…TDt1v
Payment window
5 minutes
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6293ded2684F1A76E26bEcef87c137D691Fbf800",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6293ded2684F1A76E26bEcef87c137D691Fbf800",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:137",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6293ded2684F1A76E26bEcef87c137D691Fbf800",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:42161",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
    },
    "payTo": "82wfSCZhCmZA7zwqqt6Q3FG8nqYBwUvbThP6M97fa9Q6",
    "amount": "2000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "days": 30
        }
      },
      "output": {
        "type": "json",
        "example": {
          "date": "2026-10-24",
          "range": {
            "low": 38,
            "days": 30,
            "high": 72,
            "average": 54.2
          },
          "value": 51,
          "change": {
            "vs1d": 1,
            "vs7d": -17,
            "vs30d": 9
          },
          "source": "alternative.me",
          "history": [
            {
              "date": "2026-10-24",
              "value": 51,
              "classification": "Neutral"
            }
          ],
          "attribution": "Crypto Fear & Greed Index by alternative.me (https://alternative.me/crypto/fear-and-greed-index/)",
          "classification": "Neutral",
          "nextUpdateSeconds": 62493
        }
      }
    },
    "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",
              "required": [],
              "properties": {
                "days": {
                  "type": "integer",
                  "examples": [
                    30
                  ],
                  "description": "Days of history, 1-90 (default 30)"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "date": {
                  "type": "string"
                },
                "range": {
                  "type": "object",
                  "properties": {
                    "low": {
                      "type": "number"
                    },
                    "days": {
                      "type": "number"
                    },
                    "high": {
                      "type": "number"
                    },
                    "average": {
                      "type": "number"
                    }
                  }
                },
                "value": {
                  "type": "number"
                },
                "change": {
                  "type": "object",
                  "properties": {
                    "vs1d": {
                      "type": "number"
                    },
                    "vs7d": {
                      "type": "number"
                    },
                    "vs30d": {
                      "type": "number"
                    }
                  }
                },
                "source": {
                  "type": "string"
                },
                "history": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "date": {
                        "type": "string"
                      },
                      "value": {
                        "type": "number"
                      },
                      "classification": {
                        "type": "string"
                      }
                    }
                  }
                },
                "attribution": {
                  "type": "string"
                },
                "classification": {
                  "type": "string"
                },
                "nextUpdateSeconds": {
                  "type": "number"
                }
              }
            }
          }
        }
      }
    }
  },
  "builder-code": {
    "info": {
      "a": "bc_09e30bdm"
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "a": {
          "type": "string",
          "pattern": "^[a-z0-9_]{1,32}$",
          "description": "App builder code"
        },
        "s": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^[a-z0-9_]{1,32}$"
          },
          "maxItems": 11,
          "description": "Service builder codes"
        },
        "w": {
          "type": "string",
          "pattern": "^[a-z0-9_]{1,32}$",
          "description": "Wallet builder code"
        }
      },
      "additionalProperties": false
    }
  }
}

Provenance

Seen in the source catalog
2026-11-12 08:01Z
Last indexed by Roundhouse
2026-11-14 09:40Z
Last enriched (probe, favicon, geo)
2026-11-07 13:15Z
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. 6 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 fear and greed index 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%20fear%20and%20greed%20index'
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://agent-data-tools.revmesh2074.workers.dev/crypto/fear-and-greed, 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.