# Fetch signal-packet

getSignalPacket · GET /data/signal-packet.json

## Endpoint
`GET /data/signal-packet.json`

The current validated public Signal Packet (export controls) as JSON.

## Authentication
```json
[]
```
An empty security requirement means this operation does not declare authentication. Read operation notes for entitlement and protocol-method requirements.

## Parameters
No parameters declared by the specification.

## Responses and errors
| HTTP status | Meaning |
| --- | --- |
| 200 | The requested feed. |
| 404 | Feed not published for this run. |

## Response examples
No response example is supplied by OpenAPI for this operation. The complete response schemas are preserved below; use an actual response for observed values.

## Retry guidance
See [errors and retries](/docs/api/overview#errors-and-retries). Honor operation-specific response headers. A POST may create state; do not replay it automatically.

## Complete operation contract
The expanded contract below includes all parameter constraints, response headers, schemas and examples from OpenAPI.

```json
{
  "path": "/data/signal-packet.json",
  "method": "GET",
  "parameters": [],
  "operationId": "getSignalPacket",
  "summary": "Fetch signal-packet",
  "description": "The current validated public Signal Packet (export controls) as JSON.",
  "tags": [
    "data"
  ],
  "security": [],
  "responses": {
    "200": {
      "description": "The requested feed.",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "schema_version": {
                "type": "integer"
              },
              "packet_version": {
                "type": "integer"
              },
              "packet_id": {
                "type": "string"
              },
              "edition_id": {
                "type": "string"
              },
              "topic_ids": {
                "type": "array",
                "items": {
                  "type": "string"
                }
              },
              "entity_ids": {
                "type": "array",
                "items": {}
              },
              "institution_ids": {
                "type": "array",
                "items": {
                  "type": "string"
                }
              },
              "place_ids": {
                "type": "array",
                "items": {}
              },
              "change": {
                "type": "object",
                "properties": {
                  "change_type": {
                    "type": "string"
                  },
                  "measure_type": {
                    "type": "string"
                  },
                  "status": {
                    "type": "string"
                  },
                  "prior_state": {
                    "type": "object",
                    "properties": {
                      "claim_id": {
                        "type": "string"
                      },
                      "claim_type": {
                        "type": "string"
                      },
                      "statement": {
                        "type": "string"
                      },
                      "material": {
                        "type": "boolean"
                      },
                      "support_status": {
                        "type": "string"
                      },
                      "evidence_ids": {
                        "type": "array",
                        "items": {}
                      },
                      "calculation_ids": {
                        "type": "array",
                        "items": {}
                      },
                      "basis_claim_ids": {
                        "type": "array",
                        "items": {}
                      },
                      "provenance_kind": {
                        "type": "string"
                      },
                      "generated": {
                        "type": "boolean"
                      }
                    }
                  },
                  "materiality": {
                    "type": "object",
                    "properties": {
                      "claim_id": {
                        "type": "string"
                      },
                      "claim_type": {
                        "type": "string"
                      },
                      "statement": {
                        "type": "string"
                      },
                      "material": {
                        "type": "boolean"
                      },
                      "support_status": {
                        "type": "string"
                      },
                      "evidence_ids": {
                        "type": "array",
                        "items": {}
                      },
                      "calculation_ids": {
                        "type": "array",
                        "items": {}
                      },
                      "basis_claim_ids": {
                        "type": "array",
                        "items": {
                          "type": "string"
                        }
                      },
                      "provenance_kind": {
                        "type": "string"
                      },
                      "generated": {
                        "type": "boolean"
                      }
                    }
                  }
                }
              },
              "observations": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "claim_id": {
                      "type": "string"
                    },
                    "claim_type": {
                      "type": "string"
                    },
                    "statement": {
                      "type": "string"
                    },
                    "material": {
                      "type": "boolean"
                    },
                    "support_status": {
                      "type": "string"
                    },
                    "evidence_ids": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "calculation_ids": {
                      "type": "array",
                      "items": {}
                    },
                    "basis_claim_ids": {
                      "type": "array",
                      "items": {}
                    },
                    "provenance_kind": {
                      "type": "string"
                    },
                    "generated": {
                      "type": "boolean"
                    },
                    "value": {
                      "type": "object",
                      "properties": {
                        "type": {
                          "type": "string"
                        },
                        "value": {
                          "type": [
                            "integer",
                            "string"
                          ]
                        },
                        "unit": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              },
              "significance": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "claim_id": {
                      "type": "string"
                    },
                    "claim_type": {
                      "type": "string"
                    },
                    "statement": {
                      "type": "string"
                    },
                    "material": {
                      "type": "boolean"
                    },
                    "support_status": {
                      "type": "string"
                    },
                    "evidence_ids": {
                      "type": "array",
                      "items": {}
                    },
                    "calculation_ids": {
                      "type": "array",
                      "items": {}
                    },
                    "basis_claim_ids": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "provenance_kind": {
                      "type": "string"
                    },
                    "generated": {
                      "type": "boolean"
                    }
                  }
                }
              },
              "interpretation": {
                "type": "array",
                "items": {}
              },
              "evidence": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "evidence_id": {
                      "type": "string"
                    },
                    "source_class": {
                      "type": "string"
                    },
                    "publisher_id": {
                      "type": "string"
                    },
                    "publisher_name": {
                      "type": "string"
                    },
                    "url": {
                      "type": "string"
                    },
                    "language": {
                      "type": "string"
                    },
                    "original_title": {
                      "type": "string"
                    },
                    "translated_title": {
                      "type": "string"
                    },
                    "translation_id": {
                      "type": "string"
                    },
                    "published_at": {},
                    "collected_at": {
                      "type": "string"
                    },
                    "supports_claim_ids": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    }
                  }
                }
              },
              "historical_comparisons": {
                "type": "array",
                "items": {}
              },
              "uncertainties": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "claim_id": {
                      "type": "string"
                    },
                    "claim_type": {
                      "type": "string"
                    },
                    "statement": {
                      "type": "string"
                    },
                    "material": {
                      "type": "boolean"
                    },
                    "support_status": {
                      "type": "string"
                    },
                    "evidence_ids": {
                      "type": "array",
                      "items": {}
                    },
                    "calculation_ids": {
                      "type": "array",
                      "items": {}
                    },
                    "basis_claim_ids": {
                      "type": "array",
                      "items": {}
                    },
                    "provenance_kind": {
                      "type": "string"
                    },
                    "generated": {
                      "type": "boolean"
                    }
                  }
                }
              },
              "watch_next": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "watch_id": {
                      "type": "string"
                    },
                    "institution_ids": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "condition": {
                      "type": "object",
                      "properties": {
                        "claim_id": {
                          "type": "string"
                        },
                        "claim_type": {
                          "type": "string"
                        },
                        "statement": {
                          "type": "string"
                        },
                        "material": {
                          "type": "boolean"
                        },
                        "support_status": {
                          "type": "string"
                        },
                        "evidence_ids": {
                          "type": "array",
                          "items": {}
                        },
                        "calculation_ids": {
                          "type": "array",
                          "items": {}
                        },
                        "basis_claim_ids": {
                          "type": "array",
                          "items": {}
                        },
                        "provenance_kind": {
                          "type": "string"
                        },
                        "generated": {
                          "type": "boolean"
                        }
                      }
                    },
                    "expected_at": {},
                    "would_confirm_claim_ids": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    },
                    "would_invalidate_claim_ids": {
                      "type": "array",
                      "items": {}
                    }
                  }
                }
              },
              "times": {
                "type": "object",
                "properties": {
                  "event_at": {},
                  "published_at": {},
                  "effective_at": {},
                  "observed_at": {
                    "type": "string"
                  },
                  "collected_at": {
                    "type": "string"
                  },
                  "generated_at": {
                    "type": "string"
                  },
                  "updated_at": {
                    "type": "string"
                  }
                }
              },
              "translations": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "translation_id": {
                      "type": "string"
                    },
                    "source_evidence_id": {
                      "type": "string"
                    },
                    "source_language": {
                      "type": "string"
                    },
                    "target_language": {
                      "type": "string"
                    },
                    "field": {
                      "type": "string"
                    },
                    "model_provider": {
                      "type": "string"
                    },
                    "model": {
                      "type": "string"
                    },
                    "generated_at": {}
                  }
                }
              },
              "calculations": {
                "type": "array",
                "items": {}
              },
              "confidence": {
                "type": "object",
                "properties": {
                  "evidence": {
                    "type": "object",
                    "properties": {
                      "level": {
                        "type": "string"
                      },
                      "score": {
                        "type": "number"
                      },
                      "rationale": {
                        "type": "string"
                      },
                      "claim_type": {
                        "type": "string"
                      }
                    }
                  },
                  "change_detection": {
                    "type": "object",
                    "properties": {
                      "level": {
                        "type": "string"
                      },
                      "score": {
                        "type": "number"
                      },
                      "rationale": {
                        "type": "string"
                      },
                      "claim_type": {
                        "type": "string"
                      }
                    }
                  },
                  "interpretation": {
                    "type": "object",
                    "properties": {
                      "level": {
                        "type": "string"
                      },
                      "score": {},
                      "rationale": {
                        "type": "string"
                      },
                      "claim_type": {
                        "type": "string"
                      }
                    }
                  },
                  "overall": {
                    "type": "object",
                    "properties": {
                      "level": {
                        "type": "string"
                      },
                      "score": {
                        "type": "number"
                      },
                      "rationale": {
                        "type": "string"
                      },
                      "claim_type": {
                        "type": "string"
                      }
                    }
                  }
                }
              },
              "lifecycle": {
                "type": "object",
                "properties": {
                  "state": {
                    "type": "string"
                  },
                  "freshness": {
                    "type": "string"
                  },
                  "prior_packet_id": {},
                  "replacement_packet_id": {},
                  "reason": {}
                }
              },
              "access": {
                "type": "object",
                "properties": {
                  "classification": {
                    "type": "string"
                  },
                  "public_sample": {
                    "type": "object",
                    "properties": {
                      "eligible": {
                        "type": "boolean"
                      },
                      "edition_packet_limit": {
                        "type": "integer"
                      },
                      "evidence_limit": {
                        "type": "integer"
                      },
                      "selected_evidence_ids": {
                        "type": "array",
                        "items": {
                          "type": "string"
                        }
                      },
                      "projection_of_packet_id": {
                        "type": "string"
                      },
                      "selection_method": {
                        "type": "string"
                      }
                    }
                  }
                }
              }
            },
            "additionalProperties": true,
            "description": "Inferred from the live feed at build time. The field inventory reflects this collection run; optional fields may be absent and the shape is refreshed on every deploy."
          }
        }
      }
    },
    "404": {
      "description": "Feed not published for this run.",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "required": [
              "error"
            ],
            "properties": {
              "error": {
                "type": "object",
                "required": [
                  "code",
                  "message"
                ],
                "properties": {
                  "code": {
                    "type": "string",
                    "description": "A stable machine-readable code, e.g. unauthorized or not_found."
                  },
                  "message": {
                    "type": "string",
                    "description": "A human-readable explanation."
                  },
                  "hint": {
                    "type": "string",
                    "description": "Optional resolution pointer."
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x-codeSamples": [
    {
      "lang": "curl",
      "label": "curl",
      "source": "curl -s 'https://china-snapshot.com/data/signal-packet.json'"
    }
  ]
}
```