●

LogiGrain

Other PAYMENT-READY

payment-ready until 2026-10-06

Deterministic calendrical, astronomical, and divination computation nodes for AI agents. Each endpoint performs exact calculations that LLMs cannot reliably reproduce—solar-term boundaries via apparent solar longitude (Meeus), sexagenary cycle pillars, full natal charts (planet longitudes, ASC/MC, houses, aspects), and Zi Wei Dou Shu charts—each with cited accuracy bounds in a meta field. Verified against primary sources (NAOJ, JPL, Meeus). Pay-per-call via x402 (USDC on Base, CDP facilitator).

Pay from $0.001 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

measured since 2026-06-27 (start of our harvest window) · $0.51 all-time · settled via coinbase

BASE URL https://logigrain.net │ WEBSITE https://logigrain.net │ ENDPOINTS 4 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-07-01 │ MONITORED SINCE 2026-07-01

VERDICT

ranking generation 3

solid 89/100 #4 of 46 in Other by measured score

What the score read on this service: status online, 100% uptime 30d, 398ms response p95, x402 compliance 14 of 14, $0.001 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 Other, 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 46 listings, this one among them. That set is wider than the 46 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 OTHER

Other Other 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
Clash of Coins Checkout	strong	97	99.6%	$31.4k
BRIJ Travel	solid	92	100%	$21.60
Agent Economy x402 Marketplace	solid	89	100%	$0.002
x402 Swag	solid	88	100%	$30.24
The Clinic	solid	88	100%	$3.05

5 of 45 other ranked services in Other

ASSESSMENT

updated 3h 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 100%

uptime · latest daily rollup: 100%
uptime 7d: 100%
uptime 30d: 100%
uptime 90d: 100%
response p95: 398ms
avg response: 302ms
total checks: 2,777

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 $0.001 (p11 in Other)

price (min): $0.001
category percentile (min): p11 in Other
endpoints / prices: 4 / 1
model: flat
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: 147d
registrar: Cloudflare, Inc.
hosting: custom
domain created: 2026-04-28

Identity facts, not a risk score.

traction $0.505 30d · 1 buyers · top buyer 100% (address, not entity)

volume 30d: $0.505
buyers 30d: 1
settlements 30d: 505
measured since: 2026-06-27 (start of our harvest window)
last settlement: 2026-09-24
top buyer share: 100% of 30d volume (address, not entity)
trend 7d vs 30d: 4.29x the 30d daily rate
networks: eip155:8453
volume all-time: $0.51
settlements all-time: 509
median settlement 30d: $0.001
max settlement 30d: $0.001
settled via: coinbase ($0.51, 505 tx)

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

Top buyer share is part of the ranking score: a higher share lowers the traction part of the score, by up to half when one address holds all 30d volume.

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/kyusei	$0.001	Base	USDC	header
GET	/api/seiyo	$0.001	Base	USDC	header
GET	/api/shibu	$0.001	Base	USDC	header
GET	/api/shichu	$0.001	Base	USDC	header

4 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /api/kyusei returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request

curl -i 'https://logigrain.net/api/kyusei'

// 402 response (captured by monitor) · 4 payloads · click to expand

[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x716fdE0dAc4Ef6ed2018206d43697C6Bb71D7EB3",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://logigrain.net/api/shichu",
      "mimeType": "application/json",
      "description": "LogiGrain API access"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "pathParams": {
              "var1": "shichu"
            },
            "queryParams": {
              "rate": "7",
              "years": "20",
              "principal": "10000"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "result": 38697
            }
          }
        },
        "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"
                },
                "pathParams": {
                  "type": "object"
                },
                "queryParams": {
                  "type": "object",
                  "properties": {
                    "rate": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    },
                    "years": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    },
                    "principal": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "result": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        },
        "routeTemplate": "/api/:var1"
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x716fdE0dAc4Ef6ed2018206d43697C6Bb71D7EB3",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://logigrain.net/api/seiyo",
      "mimeType": "application/json",
      "description": "LogiGrain API access"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "pathParams": {
              "var1": "seiyo"
            },
            "queryParams": {
              "rate": "7",
              "years": "20",
              "principal": "10000"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "result": 38697
            }
          }
        },
        "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"
                },
                "pathParams": {
                  "type": "object"
                },
                "queryParams": {
                  "type": "object",
                  "properties": {
                    "rate": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    },
                    "years": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    },
                    "principal": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "result": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        },
        "routeTemplate": "/api/:var1"
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x716fdE0dAc4Ef6ed2018206d43697C6Bb71D7EB3",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://logigrain.net/api/kyusei",
      "mimeType": "application/json",
      "description": "LogiGrain API access"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "pathParams": {
              "var1": "kyusei"
            },
            "queryParams": {
              "rate": "7",
              "years": "20",
              "principal": "10000"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "result": 38697
            }
          }
        },
        "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"
                },
                "pathParams": {
                  "type": "object"
                },
                "queryParams": {
                  "type": "object",
                  "properties": {
                    "rate": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    },
                    "years": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    },
                    "principal": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "result": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        },
        "routeTemplate": "/api/:var1"
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x716fdE0dAc4Ef6ed2018206d43697C6Bb71D7EB3",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://logigrain.net/api/shibu",
      "mimeType": "application/json",
      "description": "LogiGrain API access"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "pathParams": {
              "var1": "shibu"
            },
            "queryParams": {
              "rate": "7",
              "years": "20",
              "principal": "10000"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "result": 38697
            }
          }
        },
        "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"
                },
                "pathParams": {
                  "type": "object"
                },
                "queryParams": {
                  "type": "object",
                  "properties": {
                    "rate": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    },
                    "years": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    },
                    "principal": {
                      "type": "string",
                      "description": "Numeric input parameter"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "properties": {
                    "result": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        },
        "routeTemplate": "/api/:var1"
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/logigrain/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

30D UPTIME 100%

RESPONSE TIME

AVG RESP 301ms

PRICE (captured 402, USD)

Median across 4 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 Other

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 2026-07-13 · last up 2026-09-29

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

03:29:28 UTC ● OK 125ms

03:13:29 UTC ● OK 203ms

02:57:25 UTC ● OK 239ms

02:41:28 UTC ● OK 207ms

02:25:28 UTC ● OK 261ms

02:09:24 UTC ● OK 309ms

01:53:29 UTC ● OK 183ms

01:37:24 UTC ● OK 240ms

01:21:26 UTC ● OK 183ms

01:05:28 UTC ● OK 125ms

00:49:29 UTC ● OK 226ms

00:33:24 UTC ● OK 276ms

00:17:24 UTC ● OK 124ms

00:01:25 UTC ● OK 179ms

23:45:25 UTC ● OK 311ms

23:29:29 UTC ● OK 247ms

23:13:25 UTC ● OK 301ms

22:57:25 UTC ● OK 158ms

EMBED THIS BADGE

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

status

LogiGrain uptime on x402-list — live uptime

// HTML

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

// Markdown

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

// HTML · live uptime variant

<a href="https://x402-list.com/services/logigrain?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/logigrain.svg?data=uptime" alt="LogiGrain 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/logigrain/update.