x402 List

x402 Protocol Service Directory

●

Devryno

Data PAYMENT-READY

payment-ready until 2026-08-27

Tiny paid web services for agents. Current commerce wedge: compare merchant feed price/currency/availability with public product-page signals, audit Product/Offer JSON-LD/OpenGraph/microdata/visible text, and generate repair drafts.

Pay from $0.01 to $0.05 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

listed 2026-08-20 · no on-chain settlement recorded yet

BASE URL https://devryno.com │ WEBSITE https://devryno.com │ ENDPOINTS 4 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-08-20 │ MONITORED SINCE 2026-08-20

ASSESSMENT

updated 4h 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
-
uptime 7d
-
uptime 30d
-
uptime 90d
-
response p95
464ms
avg response
464ms
total checks
1

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 $0.01 to $0.05 (p57 in Data)
price (min)
$0.01
price (max)
$0.05
category percentile (min)
p57 in Data
category percentile (max)
p62 in Data
endpoints / prices
4 / 3
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
0d
registrar
PDR Ltd. d/b/a PublicDomainRegistry.com
hosting
custom
domain created
2026-08-19

Identity facts, not a risk score.

traction $0.00 30d · 0 buyers
volume 30d
$0.00
buyers 30d
0
settlements 30d
0
measured since
--- (start of our harvest window)
last settlement
---
top buyer share
-
trend 7d vs 30d
-
networks
eip155:8453
volume all-time
$0
settlements all-time
0
median settlement 30d
-
max settlement 30d
-
settled via
-

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 DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /pay/commerce-page-audit $0.025 Base USDC header
GET /pay/commerce-schema-fix $0.05 Base USDC header
GET /pay/feed-page-match $0.025 Base USDC header
GET /pay/offer-proof $0.01 Base USDC header
4 endpoints

REQUEST / RESPONSE EXAMPLE

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

// request
curl -i 'https://devryno.com/pay/commerce-page-audit'
// 402 response (captured by monitor) · 4 payloads · click to expand 
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xdD1729943bf7C408456cef52886ad12B05B57dC2",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://devryno.com/pay/offer-proof",
      "tags": [
        "ecommerce",
        "product-data",
        "price",
        "availability",
        "jsonld",
        "agentic-commerce"
      ],
      "mimeType": "application/json",
      "description": "Extract a public product offer from JSON-LD and compare it with a visible price candidate. Returns evidence and warnings; it is not a checkout quote. $0.010 USDC on Base.",
      "serviceName": "Devryno"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com/product"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "url": "https://example.com/product",
              "checks": [
                {
                  "name": "jsonld_offer",
                  "status": "pass"
                }
              ],
              "product": {
                "name": "Example product",
                "offer": {
                  "price": "19.99",
                  "currency": "USD",
                  "availability": "InStock"
                }
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$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": {
                    "url": {
                      "type": "string"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xdD1729943bf7C408456cef52886ad12B05B57dC2",
        "amount": "25000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://devryno.com/pay/feed-page-match",
      "tags": [
        "ecommerce",
        "merchant-feed",
        "google-shopping",
        "price",
        "availability",
        "agentic-commerce"
      ],
      "mimeType": "application/json",
      "description": "Compare a merchant/feed-submitted price, currency and optional availability against public product-page signals from JSON-LD, Open Graph, microdata and visible text. Useful before Google Merchant Center, marketplace, affiliate, or commerce-agent crawls. $0.025 USDC on Base.",
      "serviceName": "Devryno"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com/product",
              "price": "19.99",
              "currency": "USD",
              "availability": "in_stock"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "url": "https://example.com/product",
              "checks": [
                {
                  "name": "feed_price_matches_page_signals",
                  "status": "pass"
                }
              ],
              "verdict": "match",
              "expected": {
                "price": "19.99",
                "currency": "USD",
                "availability": "instock"
              },
              "warnings": []
            }
          }
        },
        "schema": {
          "type": "object",
          "$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": {
                    "url": {
                      "type": "string"
                    },
                    "price": {
                      "type": "string"
                    },
                    "currency": {
                      "type": "string"
                    },
                    "availability": {
                      "type": "string"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xdD1729943bf7C408456cef52886ad12B05B57dC2",
        "amount": "25000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://devryno.com/pay/commerce-page-audit",
      "tags": [
        "ecommerce",
        "agentic-commerce",
        "product-data",
        "jsonld",
        "seo",
        "merchant"
      ],
      "mimeType": "application/json",
      "description": "Audit a public product page for agent-readable commerce data: Product/Offer JSON-LD, price and currency signals across JSON-LD/Open Graph/microdata/visible text, availability, canonical URL, robots reachability and noindex. $0.025 USDC on Base.",
      "serviceName": "Devryno"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com/product"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "url": "https://example.com/product",
              "score": 88,
              "summary": "8/9 checks passed for agent-readable commerce data.",
              "verdict": "needs_review",
              "recommendations": [
                "Make JSON-LD, Open Graph product meta, microdata, and visible price/currency signals agree."
              ]
            }
          }
        },
        "schema": {
          "type": "object",
          "$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": {
                    "url": {
                      "type": "string"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xdD1729943bf7C408456cef52886ad12B05B57dC2",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://devryno.com/pay/commerce-schema-fix",
      "tags": [
        "ecommerce",
        "agentic-commerce",
        "structured-data",
        "jsonld",
        "opengraph",
        "merchant"
      ],
      "mimeType": "application/json",
      "description": "Generate a repair plan and draft schema.org Product/Offer JSON-LD plus price meta tags for a public product page after checking JSON-LD, Open Graph, microdata and visible price signals. $0.050 USDC on Base.",
      "serviceName": "Devryno"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com/product"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "url": "https://example.com/product",
              "fixPlan": {
                "status": "repair_recommended",
                "missingFields": [
                  "offers.availability"
                ]
              },
              "proposed": {
                "jsonLd": {
                  "@type": "Product"
                },
                "canonicalTag": "<link rel=\"canonical\" href=\"https://example.com/product\">"
              },
              "sourceAudit": {
                "score": 78,
                "verdict": "needs_review"
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$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": {
                    "url": {
                      "type": "string"
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "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/devryno/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
08-20 · uptime 100.0% · 262ms avg08-2008-20
24h UPTIME 100%
RESPONSE TIME
08-20 · 262ms avg08-20 · 262ms avg08-2008-20
AVG RESP 254ms
PRICE (captured 402, USD)
building price history ($0.025)

Median across 4 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
building assessment history (1 day so far)

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

VOLUME (on-chain settlement, USD)
no on-chain volume yet
DISTINCT BUYERS
no distinct buyers yet

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-20 · 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 (16) live · click to expand
TIME STATUS RESP CAUSE
● OK 253ms
● OK 129ms
● OK 229ms
● SLOW 503ms
● OK 167ms
● OK 147ms
● OK 284ms
● OK 274ms
● OK 111ms
● OK 255ms
● OK 71ms
● SLOW 462ms
● OK 192ms
● OK 295ms
● OK 220ms
● SLOW 464ms
16 of 16 checks · live count

EMBED THIS BADGE

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

Devryno listed on x402-list
status
Devryno uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/devryno?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/devryno.svg" alt="Devryno listed on x402-list" height="28">
</a>
// Markdown
[![Devryno on x402-list](https://x402-list.com/badge/devryno.svg)](https://x402-list.com/services/devryno?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/devryno?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/devryno.svg?data=uptime" alt="Devryno 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/devryno/update.