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.
$11.29
Verified settled volume
1,172 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
0x4d4a…f8d30x6293…f800BaseBase$0.08100%coinbase4d ago0xf32b8f…8ce954
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0xa89706…bad912
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0x46a0a9…c05077
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0x7c906f…c0af3f
0x4d4a…f8d30x6293…f800BaseBase$0.005100%coinbase4d ago0x0cd000…bfbee6
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0x3eadc2…3c51cb
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0x3e3976…d071e6
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0x79fa98…5580df
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0x49a383…4d0000
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0xb9e509…8e5564
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0xc72bb3…931168
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0xce2b33…61af84
0x4d4a…f8d30x6293…f800BaseBase$0.03100%coinbase4d ago0x49db9f…5b4738
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0xfc05fa…3c18e8
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0x3d7c8c…f2c314
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0x9e271c…f130ce
0x4d4a…f8d30x6293…f800BaseBase$0.01100%coinbase4d ago0xc79578…ee4fab
0x4d4a…f8d30x6293…f800BaseBase$0.002100%coinbase4d ago0x45888e…6eeaaf
0x72c5…159b0x6293…f800BaseBase$0.01100%coinbase4d ago0xb8f871…97326a
0x72c5…159b0x6293…f800BaseBase$0.002100%coinbase5d ago0x39e184…dfc017
0x72c5…159b0x6293…f800BaseBase$0.002100%coinbase5d ago0xe15af4…f1407e
0x72c5…159b0x6293…f800BaseBase$0.002100%coinbase5d ago0x82a057…263044
0x72c5…159b0x6293…f800BaseBase$0.01100%coinbase5d ago0xfbd9aa…94be53
0x72c5…159b0x6293…f800BaseBase$0.01100%coinbase5d ago0xdfaf74…9d29e7
0x72c5…159b0x6293…f800BaseBase$0.01100%coinbase5d ago0xfb5100…2b004e

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
2026-11-15 19:30Z
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.