Api Endpoint

draconic21 Signal History

GO-TO PRODUCT: x402 trend history archive — the last N stored Daily Agent Signal editions, oldest first, one full brief per date (ranked signals, judgment, action_hint, sources): see which calls held. Body { days: 1..30 }. Free first: archive_day_count at /health, /v1/signal_history/example, /signal/scorecard.json.

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Offering

Provider
draconic21-x402-api.onrender.com
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Financial Analysis
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://draconic21-x402-api.onrender.com/v1/signal_history
MIME type
application/json
First seen
2026-10-16T01:50:32.458Z
Last seen
Tags
agent-economy, news-archive, daily-brief, historical-data, backfill

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.1 USDC
Atomic price: 100000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.1 USDC
Atomic price: 100000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "payTo": "0x1520Ef5530AA71350049BE2903Cf078B38c40AE5"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "100000",
    "payTo": "6mc4GhWFyNcMh7gAVDWrKeYjDqFtEKWKQuZ9RTw2VkfM"
  }
]

Observed health

Status
Healthy
Latest latency
106 ms
Average latency
360 ms
HTTP status
204
Last checked
Reachability
100% over 10 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "type": "object",
      "properties": {
        "days": {
          "type": "integer",
          "minimum": 1,
          "maximum": 30,
          "description": "Most recent stored editions to return"
        }
      },
      "required": [],
      "additionalProperties": true
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "required": [
        "schema",
        "archive_day_count",
        "archive_earliest",
        "archive_latest",
        "requested_days",
        "days_returned",
        "dates",
        "briefs",
        "disclaimer"
      ],
      "properties": {
        "schema": {
          "type": "string"
        },
        "brand": {
          "type": "string"
        },
        "product": {
          "type": "string"
        },
        "archive_day_count": {
          "type": "integer"
        },
        "archive_total_days": {
          "type": "integer"
        },
        "archive_earliest": {
          "type": "string"
        },
        "archive_latest": {
          "type": "string"
        },
        "requested_days": {
          "type": "integer"
        },
        "days_returned": {
          "type": "integer"
        },
        "dates": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "briefs": {
          "type": "array",
          "items": {
            "type": "object",
            "required": [
              "schema",
              "date",
              "generated_at",
              "curator_judgment",
              "archive_honesty",
              "signals",
              "disclaimer"
            ],
            "properties": {
              "schema": {
                "type": "string"
              },
              "brand": {
                "type": "string"
              },
              "product": {
                "type": "string"
              },
              "date": {
                "type": "string"
              },
              "generated_at": {
                "type": "string"
              },
              "summary": {
                "type": "string"
              },
              "curator_judgment": {
                "type": "object",
                "properties": {
                  "one_liner": {
                    "type": "string"
                  },
                  "editor_pick_id": {
                    "type": "string"
                  },
                  "archive_day_count": {
                    "type": "integer"
                  }
                }
              },
              "archive_honesty": {
                "type": "object",
                "properties": {
                  "stored_day_count": {
                    "type": "integer"
                  },
                  "note": {
                    "type": "string"
                  }
                }
              },
              "research_meta": {
                "type": "object",
                "properties": {
                  "method": {
                    "type": "string"
                  },
                  "collection_at": {
                    "type": "string"
                  }
                }
              },
              "signals": {
                "type": "array",
                "items": {
                  "type": "object",
                  "required": [
                    "id",
                    "rank",
                    "headline",
                    "judgment",
                    "buyer_value",
                    "action_hint",
                    "sources"
                  ],
                  "properties": {
                    "id": {
                      "type": "string"
                    },
                    "rank": {
                      "type": "integer"
                    },
                    "headline": {
                      "type": "string"
                    },
                    "judgment": {
                      "type": "string"
                    },
                    "why_it_matters": {
                      "type": "string"
                    },
                    "buyer_value": {
                      "type": "string"
                    },
                    "action_hint": {
                      "type": "string"
                    },
                    "curator_edge": {
                      "type": "string"
                    },
                    "confidence": {
                      "type": "string"
                    },
                    "vs_prior": {
                      "type": "string"
                    },
                    "sources": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    }
                  }
                }
              },
              "disclaimer": {
                "type": "string"
              },
              "machine": {
                "type": "object",
                "properties": {
                  "go_to_product": {
                    "type": "string"
                  },
                  "archive_day_count": {
                    "type": "integer"
                  }
                }
              }
            }
          }
        },
        "moat": {
          "type": "object",
          "properties": {
            "kind": {
              "type": "string"
            },
            "archive_day_count": {
              "type": "integer"
            },
            "note": {
              "type": "string"
            }
          }
        },
        "machine": {
          "type": "object"
        },
        "disclaimer": {
          "type": "string"
        }
      }
    }
  },
  "required": [
    "type"
  ]
}