●

SignalBrew

Finance PAYMENT-READY

payment-ready until 2026-08-20

Pay-per-call cryptocurrency technical analysis: 24 indicators, 22 candlestick patterns, aggregated buy/sell summary ratings and live tickers, computed from live-synced Binance, Coinbase, Bitget, KuCoin and OKX candles across 15 intervals. Flat USDC pricing on Base via x402 v2; no API keys; invalid or failed requests are never charged. Free reference endpoints list every indicator, parameter and price.

Pay from $0.005 to $0.03 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-08-13 · $0.03 all-time · settled via coinbase

BASE URL https://api.signalbrew.io │ WEBSITE https://signalbrew.io │ ENDPOINTS 5 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-07-28 │ MONITORED SINCE 2026-07-28

ASSESSMENT

updated 21m ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%

uptime 24h: 100%
uptime 7d: 100%
uptime 30d: 100%
uptime 90d: 100%
response p95: 261ms
avg response: 185ms
total checks: 1,457

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.005 to $0.03 (p30 in Finance)

price (min): $0.005
price (max): $0.03
category percentile (min): p30 in Finance
category percentile (max): p44 in Finance
endpoints / prices: 5 / 2
model: tiered
stability: 100%

risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: -
registrar: -
hosting: custom
domain created: ---

Identity facts, not a risk score.

traction $0.03 30d · 1 buyers · top buyer 100%

volume 30d: $0.03
buyers 30d: 1
settlements 30d: 1
first settlement: 2026-08-13
last settlement: 2026-08-13
top buyer share: 100% of 30d volume
trend 7d vs 30d: 4.29x the 30d daily rate
networks: eip155:8453
volume all-time: $0.03
settlements all-time: 1
median settlement 30d: $0.03
max settlement 30d: $0.03
settled via: coinbase ($0.03, 1 tx)

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

Provides cryptocurrency technical analysis calculations and market data from various exchanges

category: crypto-analytics
in: path

cryptotechnical-analysismarket-dataindicatorstrading

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	PRICE	NETWORK	ASSET	402 CHANNEL
GET	/api/binance/BTC_USDT/1hour/indicators/macd	$0.005	Base	USDC	header
GET	/api/binance/BTC_USDT/1hour/indicators/rsi	$0.005	Base	USDC	header
GET	/api/binance/BTC_USDT/1hour/summary	$0.03	Base	USDC	header
GET	/api/binance/BTC_USDT/ticker	$0.005	Base	USDC	header
GET	/api/coinbase/BTC_USDT/1day/indicators/supertrend	$0.005	Base	USDC	header

5 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /api/binance/BTC_USDT/1hour/indicators/macd returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request

curl -i 'https://api.signalbrew.io/api/binance/BTC_USDT/1hour/indicators/macd'

// 402 response (captured by monitor) · 5 payloads · click to expand

[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x4A9718ccf6232D49b2f32765FdAee9AC4d6e6B47",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.signalbrew.io/api/binance/BTC_USDT/1hour/indicators/rsi",
      "mimeType": "application/json",
      "description": "Relative strength index (rsi) of any listed cryptocurrency pair, computed on demand from live-synced Binance, Coinbase, Bitget, KuCoin and OKX candles across fifteen intervals. Part of the SignalBrew pay-per-call technical analysis catalog: one flat USDC price per calculation over the x402 protocol, and invalid requests are never charged."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "field": "close",
              "length": "14"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "params": {
                "field": "close",
                "length": 14
              },
              "result": {
                "value": "62.41"
              },
              "symbol": "BTC_USDT",
              "candles": {
                "to": "2026-07-20T23:00:00Z",
                "from": "2026-07-20T10:00:00Z",
                "count": 14
              },
              "exchange": "binance",
              "interval": "1hour",
              "indicator": "rsi"
            }
          }
        },
        "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": {
                    "field": {
                      "type": "string",
                      "description": "The candle field the indicator is calculated from; the full parameter catalog of every indicator is served by the free /api/indicators endpoint."
                    },
                    "length": {
                      "type": "string",
                      "description": "The number of candles the indicator is calculated from."
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "params": {
                      "type": "object"
                    },
                    "result": {
                      "type": "object",
                      "description": "The indicator specific result values as decimal strings."
                    },
                    "symbol": {
                      "type": "string"
                    },
                    "candles": {
                      "type": "object"
                    },
                    "exchange": {
                      "type": "string"
                    },
                    "interval": {
                      "type": "string"
                    },
                    "indicator": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x4A9718ccf6232D49b2f32765FdAee9AC4d6e6B47",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.signalbrew.io/api/binance/BTC_USDT/1hour/indicators/macd",
      "mimeType": "application/json",
      "description": "Moving average convergence divergence with the signal line and the histogram (macd) of any listed cryptocurrency pair, computed on demand from live-synced Binance, Coinbase, Bitget, KuCoin and OKX candles across fifteen intervals. Part of the SignalBrew pay-per-call technical analysis catalog: one flat USDC price per calculation over the x402 protocol, and invalid requests are never charged."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "field": "close",
              "length": "14"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "params": {
                "field": "close",
                "length": 14
              },
              "result": {
                "value": "62.41"
              },
              "symbol": "BTC_USDT",
              "candles": {
                "to": "2026-07-20T23:00:00Z",
                "from": "2026-07-20T10:00:00Z",
                "count": 14
              },
              "exchange": "binance",
              "interval": "1hour",
              "indicator": "rsi"
            }
          }
        },
        "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": {
                    "field": {
                      "type": "string",
                      "description": "The candle field the indicator is calculated from; the full parameter catalog of every indicator is served by the free /api/indicators endpoint."
                    },
                    "length": {
                      "type": "string",
                      "description": "The number of candles the indicator is calculated from."
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "params": {
                      "type": "object"
                    },
                    "result": {
                      "type": "object",
                      "description": "The indicator specific result values as decimal strings."
                    },
                    "symbol": {
                      "type": "string"
                    },
                    "candles": {
                      "type": "object"
                    },
                    "exchange": {
                      "type": "string"
                    },
                    "interval": {
                      "type": "string"
                    },
                    "indicator": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x4A9718ccf6232D49b2f32765FdAee9AC4d6e6B47",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.signalbrew.io/api/binance/BTC_USDT/1hour/summary",
      "mimeType": "application/json",
      "description": "Aggregated cryptocurrency technical analysis rating in a single call: simple and exponential moving averages of three lengths, RSI, stochastic, CCI, Williams %R, MFI, MACD, ADX and SuperTrend each vote buy, neutral or sell, and the votes combine into an overall rating from strong-buy to strong-sell. Computed from live-synced Binance, Coinbase, Bitget, KuCoin and OKX candles, paid in USDC via the x402 protocol."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET"
          },
          "output": {
            "type": "json",
            "example": {
              "result": {
                "buy": 8,
                "sell": 5,
                "score": "0.21",
                "votes": [
                  {
                    "name": "sma-10",
                    "vote": "buy",
                    "value": "117201.4"
                  },
                  {
                    "name": "rsi-14",
                    "vote": "sell",
                    "value": "71.24"
                  }
                ],
                "rating": "buy",
                "neutral": 1
              },
              "symbol": "BTC_USDT",
              "candles": {
                "to": "2026-07-24T16:00:00Z",
                "from": "2026-07-20T10:00:00Z",
                "count": 99
              },
              "exchange": "binance",
              "interval": "1hour"
            }
          }
        },
        "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": {}
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "result": {
                      "type": "object",
                      "description": "The overall rating, the vote balance score and every indicator vote of the basket."
                    },
                    "symbol": {
                      "type": "string"
                    },
                    "candles": {
                      "type": "object"
                    },
                    "exchange": {
                      "type": "string"
                    },
                    "interval": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x4A9718ccf6232D49b2f32765FdAee9AC4d6e6B47",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.signalbrew.io/api/binance/BTC_USDT/ticker",
      "mimeType": "application/json",
      "description": "Live cryptocurrency price quote in a single call: the last traded price along with the ask, the bid, the 24 hour change, the percentage change and the traded volume of any symbol listed on Binance, Coinbase, Bitget, KuCoin or OKX, paid in USDC via the x402 protocol."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET"
          },
          "output": {
            "type": "json",
            "example": {
              "result": {
                "ask": "117201.5",
                "bid": "117201.3",
                "last": "117201.4",
                "change": "-1230.6",
                "volume": "18432.71",
                "percentChange": "-1.04"
              },
              "symbol": "BTC_USDT",
              "exchange": "binance"
            }
          }
        },
        "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": {}
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "result": {
                      "type": "object",
                      "description": "The last traded price along with the ask, the bid, the 24 hour change values and the traded volume as decimal strings."
                    },
                    "symbol": {
                      "type": "string"
                    },
                    "exchange": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x4A9718ccf6232D49b2f32765FdAee9AC4d6e6B47",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.signalbrew.io/api/coinbase/BTC_USDT/1day/indicators/supertrend",
      "mimeType": "application/json",
      "description": "SuperTrend value with its trend direction (supertrend) of any listed cryptocurrency pair, computed on demand from live-synced Binance, Coinbase, Bitget, KuCoin and OKX candles across fifteen intervals. Part of the SignalBrew pay-per-call technical analysis catalog: one flat USDC price per calculation over the x402 protocol, and invalid requests are never charged."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "field": "close",
              "length": "14"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "params": {
                "field": "close",
                "length": 14
              },
              "result": {
                "value": "62.41"
              },
              "symbol": "BTC_USDT",
              "candles": {
                "to": "2026-07-20T23:00:00Z",
                "from": "2026-07-20T10:00:00Z",
                "count": 14
              },
              "exchange": "binance",
              "interval": "1hour",
              "indicator": "rsi"
            }
          }
        },
        "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": {
                    "field": {
                      "type": "string",
                      "description": "The candle field the indicator is calculated from; the full parameter catalog of every indicator is served by the free /api/indicators endpoint."
                    },
                    "length": {
                      "type": "string",
                      "description": "The number of candles the indicator is calculated from."
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "params": {
                      "type": "object"
                    },
                    "result": {
                      "type": "object",
                      "description": "The indicator specific result values as decimal strings."
                    },
                    "symbol": {
                      "type": "string"
                    },
                    "candles": {
                      "type": "object"
                    },
                    "exchange": {
                      "type": "string"
                    },
                    "interval": {
                      "type": "string"
                    },
                    "indicator": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 24h selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/signalbrew/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME

24h UPTIME 100%

RESPONSE TIME

AVG RESP 185ms

PRICE (captured 402, USD)

Median across 5 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

price percentile in Finance

site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-07-28 · last up 2026-08-13

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

SITE PILLARS

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

recent checks (18) live · click to expand

TIME STATUS RESP CAUSE

16:10:19 UTC ● OK 55ms

15:54:24 UTC ● OK 103ms

15:38:18 UTC ● OK 106ms

15:22:21 UTC ● OK 123ms

15:06:23 UTC ● OK 101ms

14:50:24 UTC ● OK 131ms

14:34:15 UTC ● OK 104ms

14:18:23 UTC ● OK 105ms

14:02:21 UTC ● OK 204ms

13:46:22 UTC ● OK 140ms

13:30:20 UTC ● OK 77ms

13:14:21 UTC ● OK 73ms

12:58:27 UTC ● OK 129ms

12:42:21 UTC ● OK 133ms

12:26:21 UTC ● OK 92ms

12:10:19 UTC ● OK 53ms

11:54:22 UTC ● OK 126ms

11:38:22 UTC ● OK 177ms

EMBED THIS BADGE

Show that SignalBrew is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

status

SignalBrew uptime on x402-list — live uptime

// HTML

<a href="https://x402-list.com/services/signalbrew?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/signalbrew.svg" alt="SignalBrew listed on x402-list" height="28">
</a>

// Markdown

[![SignalBrew on x402-list](https://x402-list.com/badge/signalbrew.svg)](https://x402-list.com/services/signalbrew?utm_source=badge&utm_medium=referral&utm_campaign=embed)

// HTML · live uptime variant

<a href="https://x402-list.com/services/signalbrew?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/signalbrew.svg?data=uptime" alt="SignalBrew uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/signalbrew/update.