●

Concordance

Data PAYMENT-READY

payment-ready until 2026-08-19

Aggregates 18 free and keyed data sources (SEC EDGAR, FRED, GDELT, arXiv, court opinions, market data, Wikipedia, and more) into 6 x402-priced tools: full-text search, economic/financial time series, cross-category digest, cross-source company briefs, source corroboration scoring, and chronological timelines.

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

first settlement 2026-07-28 · $0 all-time · last settled 2026-08-10

BASE URL https://concordancehq.duckdns.org │ WEBSITE https://concordancehq.duckdns.org │ ENDPOINTS 6 │ NETWORK Base / Solana │ ASSET USDC │ MEMBER SINCE 2026-08-12 │ MONITORED SINCE 2026-08-12

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: 154ms
avg response: 154ms
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 (p53 in Data)

price (min): $0.01
price (max): $0.05
category percentile (min): p53 in Data
category percentile (max): p63 in Data
endpoints / prices: 6 / 4
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: 4869d
registrar: Gandi SAS
hosting: custom
domain created: 2013-04-12

Identity facts, not a risk score.

traction $0.00 30d · 0 buyers

volume 30d: $0.00
buyers 30d: 0
settlements 30d: 0
first settlement: 2026-07-28
last settlement: 2026-08-10
top buyer share: -
trend 7d vs 30d: -
networks: eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
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	PRICE	NETWORK	ASSET	402 CHANNEL
POST	/tools/company-brief	$0.05	Base/Solana	USDC	header
POST	/tools/corroboration	$0.04	Base/Solana	USDC	header
POST	/tools/digest	$0.03	Base/Solana	USDC	header
POST	/tools/search	$0.01	Base/Solana	USDC	header
POST	/tools/series	$0.01	Base/Solana	USDC	header
POST	/tools/timeline	$0.03	Base/Solana	USDC	header

6 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /tools/company-brief returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request

curl -i -X POST 'https://concordancehq.duckdns.org/tools/company-brief'

// 402 response (captured by monitor) · 6 payloads · click to expand

[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x1f5f8474fA0dc1Fde79187abd68Ef8Ea15ADAe34",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "yEx9WBP1NnzoTpDmi67F536bso3YNcQPBRhWRoswTBS",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://concordancehq.duckdns.org/tools/search",
      "tags": [
        "search",
        "aggregator",
        "full-text-search",
        "multi-source",
        "news"
      ],
      "iconUrl": "https://concordancehq.duckdns.org/static/logo.jpg",
      "mimeType": "application/json",
      "description": "Full-text search across every aggregated data source in one call: news, SEC filings, court opinions, academic papers, government records, and developer discussions. One query surfaces everything concordant across independently-sourced, citable results -- not a single-source wrapper. Optional source/category/since filters.",
      "serviceName": "search"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "limit": 10,
              "query": "central bank interest rate"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "count": 1,
              "results": [
                {
                  "url": "https://example.com/article",
                  "title": "Central bank signals rate cut",
                  "source": "gdelt",
                  "content": "Central bank signals rate cut",
                  "category": "news_events",
                  "metadata": {
                    "domain": "example.com"
                  },
                  "published_at": "2026-07-19T18:30:00+00:00"
                }
              ]
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "query"
                  ],
                  "properties": {
                    "limit": {
                      "type": "integer"
                    },
                    "query": {
                      "type": "string"
                    },
                    "since": {
                      "type": "string"
                    },
                    "source": {
                      "type": "string"
                    },
                    "category": {
                      "type": "string"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "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": "0x1f5f8474fA0dc1Fde79187abd68Ef8Ea15ADAe34",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "yEx9WBP1NnzoTpDmi67F536bso3YNcQPBRhWRoswTBS",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://concordancehq.duckdns.org/tools/series",
      "tags": [
        "economic-data",
        "time-series",
        "market-data",
        "stock-quotes",
        "trade-data"
      ],
      "iconUrl": "https://concordancehq.duckdns.org/static/logo.jpg",
      "mimeType": "application/json",
      "description": "Tabular time-series lookup across economic indicators (FRED, World Bank, UN Comtrade), crypto TVL, weather, and stock quotes -- by source + series_id, with an optional date range.",
      "serviceName": "series"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "source": "fred",
              "series_id": "GDP"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "points": [
                {
                  "value": 100,
                  "observed_at": "2026-01-01"
                }
              ],
              "source": "fred",
              "series_id": "GDP"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "source",
                    "series_id"
                  ],
                  "properties": {
                    "end": {
                      "type": "string"
                    },
                    "start": {
                      "type": "string"
                    },
                    "source": {
                      "type": "string"
                    },
                    "series_id": {
                      "type": "string"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "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": "0x1f5f8474fA0dc1Fde79187abd68Ef8Ea15ADAe34",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "yEx9WBP1NnzoTpDmi67F536bso3YNcQPBRhWRoswTBS",
        "amount": "30000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://concordancehq.duckdns.org/tools/digest",
      "tags": [
        "digest",
        "topic-search",
        "briefing",
        "cross-category",
        "aggregator"
      ],
      "iconUrl": "https://concordancehq.duckdns.org/static/logo.jpg",
      "mimeType": "application/json",
      "description": "One call, every category: pulls everything matching a topic across all aggregated sources and groups it by category (news, legal, academic, dev community, ...) with counts -- replaces manually calling /tools/search once per category and merging results yourself. Structured aggregation, not an AI-generated summary.",
      "serviceName": "digest"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "topic": "cryptocurrency regulation",
              "per_category_limit": 5
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "topic": "cryptocurrency regulation",
              "categories": [
                {
                  "count": 2,
                  "category": "legal",
                  "top_results": [
                    {
                      "url": "https://www.regulations.gov/document/EPA-HQ-OAR-2022-0985-3228",
                      "title": "Tracking electricity consumption from U.S. cryptocurrency mining",
                      "source": "regulations_gov",
                      "content": "IN-DEPTH ANALYSIS cryptocurrency mining",
                      "published_at": "2024-04-22T04:00:00Z"
                    }
                  ]
                }
              ],
              "total_count": 4
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "topic"
                  ],
                  "properties": {
                    "since": {
                      "type": "string"
                    },
                    "topic": {
                      "type": "string"
                    },
                    "per_category_limit": {
                      "type": "integer"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "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": "0x1f5f8474fA0dc1Fde79187abd68Ef8Ea15ADAe34",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "yEx9WBP1NnzoTpDmi67F536bso3YNcQPBRhWRoswTBS",
        "amount": "50000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://concordancehq.duckdns.org/tools/company-brief",
      "tags": [
        "company-data",
        "stock-quotes",
        "sec-filings",
        "financial-data",
        "correlation"
      ],
      "iconUrl": "https://concordancehq.duckdns.org/static/logo.jpg",
      "mimeType": "application/json",
      "description": "Cross-source correlation for one company in a single call: latest quotes from 3 independent market-data providers, recent SEC filings, and general mentions across news/academic/legal/dev-community sources -- joins data no single-source provider offers together. Accepts a ticker (AAPL) or company name (Apple).",
      "serviceName": "company_brief"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "company": "AAPL",
              "per_section_limit": 5
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "cik": "0000320193",
              "ticker": "AAPL",
              "company": "Apple",
              "mentions": [],
              "market_data": [
                {
                  "value": 333.74,
                  "source": "finnhub",
                  "observed_at": "2026-07-18"
                }
              ],
              "recent_filings": [
                {
                  "url": "https://www.sec.gov/Archives/edgar/data/320193/...",
                  "title": "Apple Inc. - 10-K filing",
                  "source": "sec_edgar",
                  "content": "Apple Inc. filed Form 10-K",
                  "category": "corporate_financial",
                  "published_at": "2026-06-17"
                }
              ]
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "company"
                  ],
                  "properties": {
                    "company": {
                      "type": "string"
                    },
                    "per_section_limit": {
                      "type": "integer"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "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": "0x1f5f8474fA0dc1Fde79187abd68Ef8Ea15ADAe34",
        "amount": "40000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "yEx9WBP1NnzoTpDmi67F536bso3YNcQPBRhWRoswTBS",
        "amount": "40000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://concordancehq.duckdns.org/tools/corroboration",
      "tags": [
        "fact-checking",
        "trust-signal",
        "source-verification",
        "claim-checking",
        "multi-source"
      ],
      "iconUrl": "https://concordancehq.duckdns.org/static/logo.jpg",
      "mimeType": "application/json",
      "description": "Is a claim independently corroborated across multiple unrelated sources, or does it trace back to a single origin? Groups matches by SOURCE (not category) so a caller sees exactly how many independent outlets/agencies back a claim -- a trust signal no single-source competitor can offer, since it requires already owning many independent sources.",
      "serviceName": "corroboration"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "claim": "the Federal Reserve raised interest rates"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "claim": "the Federal Reserve raised interest rates",
              "sources": [
                {
                  "count": 4,
                  "source": "gdelt",
                  "top_url": "https://example.com/article",
                  "category": "news_events",
                  "top_title": "Fed raises rates by 25bps",
                  "top_published_at": "2026-07-19T18:30:00+00:00"
                }
              ],
              "total_matches": 7,
              "corroboration_level": "corroborated",
              "distinct_source_count": 3
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "claim"
                  ],
                  "properties": {
                    "claim": {
                      "type": "string"
                    },
                    "since": {
                      "type": "string"
                    },
                    "raw_pull_limit": {
                      "type": "integer"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "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": "0x1f5f8474fA0dc1Fde79187abd68Ef8Ea15ADAe34",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "yEx9WBP1NnzoTpDmi67F536bso3YNcQPBRhWRoswTBS",
        "amount": "30000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://concordancehq.duckdns.org/tools/timeline",
      "tags": [
        "timeline",
        "trend-tracking",
        "chronological",
        "story-evolution",
        "multi-source"
      ],
      "iconUrl": "https://concordancehq.duckdns.org/static/logo.jpg",
      "mimeType": "application/json",
      "description": "How has coverage of a topic developed over time, across every aggregated source? Chronologically ordered (oldest first) -- unlike /tools/search (relevance-ranked) or /tools/digest (grouped by category) -- for tracking a story's evolution or an emerging trend across independently-sourced outlets in one call.",
      "serviceName": "timeline"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "limit": 10,
              "topic": "cryptocurrency regulation"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "count": 1,
              "topic": "cryptocurrency regulation",
              "timeline": [
                {
                  "url": "https://www.regulations.gov/document/EPA-HQ-OAR-2022-0985-3228",
                  "title": "Tracking electricity consumption from U.S. cryptocurrency mining",
                  "source": "regulations_gov",
                  "category": "legal",
                  "published_at": "2026-04-22T04:00:00Z"
                }
              ],
              "undated_count": 0
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "topic"
                  ],
                  "properties": {
                    "limit": {
                      "type": "integer"
                    },
                    "since": {
                      "type": "string"
                    },
                    "topic": {
                      "type": "string"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "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/concordance/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 145ms

PRICE (captured 402, USD)

Median across 6 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

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-12 · last up 2026-08-12

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 (17) live · click to expand

TIME STATUS RESP CAUSE

18:01:01 UTC ● OK 213ms

17:45:00 UTC ● OK 149ms

17:29:01 UTC ● OK 172ms

17:13:01 UTC ● OK 184ms

16:57:01 UTC ● OK 177ms

16:41:01 UTC ● OK 163ms

16:25:01 UTC ● OK 156ms

16:09:01 UTC ● OK 156ms

15:53:00 UTC ● OK 101ms

15:37:00 UTC ● OK 117ms

15:21:01 UTC ● OK 158ms

15:05:00 UTC ● OK 73ms

14:49:17 UTC ● OK 71ms

14:34:01 UTC ● OK 199ms

14:18:00 UTC ● OK 88ms

14:02:00 UTC ● OK 134ms

13:46:01 UTC ● OK 154ms

EMBED THIS BADGE

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status

Concordance uptime on x402-list — live uptime

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// HTML · live uptime variant

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  <img src="https://x402-list.com/badge/concordance.svg?data=uptime" alt="Concordance 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 ]

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