○

SignalBrew

payment-ready 2026-08-20, probe currently failing

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.

measured since 2026-07-20 (start of our harvest window) · $0.20 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

VERDICT

ranking generation 3

mixed 69/100 #84 of 88 in Finance by measured score

What the score read on this service: status offline, 52.7% uptime 30d, 185ms response p95, x402 compliance 14 of 14, $0.005 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

It is a score inside Finance, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 88 listings, this one among them. That set is wider than the 88 the position above is counted against, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

ALTERNATIVES IN FINANCE

Other Finance services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE	BAND	SCORE	UPTIME 30D	VOL 30D
Bitrefill	strong	96	99.9%	$559.83
Losbeto — LLM Gateway & Market Intelligence	solid	91	99.5%	$63.34
Stock Trends Market Intelligence	solid	91	99.4%	$83.32
x402stock	solid	90	100%	$17.30
hlrisk	solid	90	99.9%	$16.29

5 of 87 other ranked services in Finance · see the whole category

ASSESSMENT

updated 6h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 52.7%

uptime 24h: 0%
uptime 7d: 0%
uptime 30d: 52.7%
uptime 90d: 94.5%
response p95: 185ms
avg response: 118ms
total checks: 335

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

compliance A (14/14), stale (probe failing)

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

jump to compliance checklist

price $0.005 to $0.03 (p31 in Finance)

price (min): $0.005
price (max): $0.03
category percentile (min): p31 in Finance
category percentile (max): p43 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
measured since: 2026-07-20 (start of our harvest window)
last settlement: 2026-08-18
top buyer share: 100% of 30d volume
trend 7d vs 30d: 0.00x the 30d daily rate
networks: eip155:8453
volume all-time: $0.20
settlements all-time: 11
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

No AI synthesis has been produced for this service yet.

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 7d 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

7d UPTIME 0%

RESPONSE TIME

AVG RESP 118ms

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 · stale (probe failing)

last 402 captured 2026-07-28 · last up 2026-08-20

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

17:16:00 UTC ○ DOWN 118ms network: SSRF: resolved to a private address

11:15:00 UTC ○ DOWN 80ms network: SSRF: resolved to a private address

05:14:00 UTC ○ DOWN 43ms network: SSRF: resolved to a private address

23:13:00 UTC ○ DOWN 29ms network: SSRF: resolved to a private address

17:12:02 UTC ○ DOWN 213ms network: SSRF: resolved to a private address

11:11:00 UTC ○ DOWN 62ms network: SSRF: resolved to a private address

05:10:33 UTC ○ DOWN 112ms network: SSRF: resolved to a private address

23:09:00 UTC ○ DOWN 125ms network: SSRF: resolved to a private address

17:08:00 UTC ○ DOWN 120ms network: SSRF: resolved to a private address

11:07:00 UTC ○ DOWN 129ms network: SSRF: resolved to a private address

05:06:04 UTC ○ DOWN 110ms network: SSRF: resolved to a private address

23:05:00 UTC ○ DOWN 18ms network: SSRF: resolved to a private address

17:04:00 UTC ○ DOWN 109ms network: SSRF: resolved to a private address

11:03:00 UTC ○ DOWN 86ms network: SSRF: resolved to a private address

05:02:00 UTC ○ DOWN 33ms network: SSRF: resolved to a private address

23:01:00 UTC ○ DOWN 68ms network: SSRF: resolved to a private address

17:00:00 UTC ○ DOWN 152ms network: SSRF: resolved to a private address

10:59:00 UTC ○ DOWN 62ms network: SSRF: resolved to a private address

EMBED THIS BADGE

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status

SignalBrew uptime on x402-list — live uptime

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<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>

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