Technical documentation

Sync and export.

Context4 syncs: sources, supported entities, runs and data exports through the public API.

Generated from the public Context4 OpenAPI. Authenticate with Authorization: Bearer and an API key. General rules: API. Full contract: OpenAPI JSON. In the JSON below, $ref points to a named schema in the Schemas section.

getSyncDeliveryAuthority

GET /v1/syncs/{syncId}/delivery-authority

Deployment URL: https://ctx4.me/v1/syncs/{syncId}/delivery-authority. Replace parameters in braces with actual IDs from the API.

Read the tenant-scoped delivery grant fence for a sync resource

Capability: syncs:read.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}
`entity`	query	yes	{"type":"string","pattern":"^[A-Za-z0-9][A-Za-z0-9_.-]{0,79}$"}

Responses and errors

HTTP	Meaning	Format and schema
200	Persisted delivery grants and source lineage without credentials	`application/json` SyncDeliveryAuthority
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

createSync

POST /v1/syncs

Deployment URL: https://ctx4.me/v1/syncs. Replace parameters in braces with actual IDs from the API.

Create a sync binding a connection to a syncable entity

Capability: syncs:write.

Parameters

Name	Location	Required	Type and constraints
`Idempotency-Key`	header	no	{"type":"string"} Required when source_kind is database_poll; retries with the same key and payload return the original sync. Optional for other source kinds.

Request body

Required.

Data

{
  "required": true,
  "content": {
    "application/json": {
      "schema": {
        "type": "object",
        "properties": {
          "connection_id": {
            "type": "string",
            "format": "uuid",
            "example": "9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"
          },
          "source_kind": {
            "type": "string",
            "enum": [
              "api_poll",
              "database_cdc",
              "database_poll",
              "topic"
            ]
          },
          "database_poll": {
            "type": "object",
            "properties": {
              "schema": {
                "type": "string",
                "minLength": 1,
                "maxLength": 128
              },
              "table": {
                "type": "string",
                "minLength": 1,
                "maxLength": 128
              },
              "columns": {
                "type": "array",
                "items": {
                  "type": "string",
                  "minLength": 1,
                  "maxLength": 128
                },
                "minItems": 1,
                "maxItems": 256
              },
              "primary_key": {
                "type": "array",
                "items": {
                  "type": "string",
                  "minLength": 1,
                  "maxLength": 128
                },
                "minItems": 1,
                "maxItems": 16
              },
              "mode": {
                "type": "string",
                "enum": [
                  "full_scan",
                  "rowversion",
                  "timestamp"
                ]
              },
              "watermark_column": {
                "type": [
                  "string",
                  "null"
                ],
                "minLength": 1,
                "maxLength": 128
              },
              "full_reconciliation_minutes": {
                "type": "integer",
                "minimum": 1,
                "maximum": 10080
              },
              "timestamp_overlap_seconds": {
                "type": "integer",
                "minimum": 0,
                "maximum": 86400
              },
              "deletion_policy": {
                "type": "string",
                "enum": [
                  "preserve",
                  "confirm_missing"
                ]
              }
            },
            "required": [
              "schema",
              "table",
              "columns",
              "primary_key"
            ],
            "additionalProperties": false
          },
          "entity": {
            "type": "string",
            "pattern": "^[A-Za-z0-9][A-Za-z0-9_.-]{0,79}$"
          },
          "schedule_minutes": {
            "type": "integer",
            "minimum": 1,
            "maximum": 10080
          }
        },
        "required": [
          "connection_id",
          "entity"
        ],
        "additionalProperties": false
      }
    }
  }
}

Responses and errors

HTTP	Meaning	Format and schema
201	The created sync; acquisition and initial loading follow the provider capabilities	`application/json` Sync
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing, forbidden)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
409	Problem (conflict)	`application/problem+json` Problem
429	Problem (rate_limited, quota_exceeded)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

listSyncs

GET /v1/syncs

Deployment URL: https://ctx4.me/v1/syncs. Replace parameters in braces with actual IDs from the API.

List syncs in the workspace

Capability: syncs:read.

Parameters

Name	Location	Required	Type and constraints
`cursor`	query	no	{"type":"string","minLength":1,"maxLength":400,"pattern":"^[A-Za-z0-9_-]+$","description":"Opaque pagination cursor from a previous response"} Opaque pagination cursor from a previous response
`limit`	query	no	{"type":"integer","minimum":1,"maximum":100,"description":"Page size (1-100, default 25)"} Page size (1-100, default 25)
`connection_id`	query	no	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}

Responses and errors

HTTP	Meaning	Format and schema
200	One page of syncs with the continuation cursor	`application/json` SyncList
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

getSync

GET /v1/syncs/{syncId}

Deployment URL: https://ctx4.me/v1/syncs/{syncId}. Replace parameters in braces with actual IDs from the API.

Get one sync

Capability: syncs:read.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}

Responses and errors

HTTP	Meaning	Format and schema
200	The sync view	`application/json` Sync
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

patchSync

PATCH /v1/syncs/{syncId}

Deployment URL: https://ctx4.me/v1/syncs/{syncId}. Replace parameters in braces with actual IDs from the API.

Pause, resume, or update the schedule of a sync

Capability: syncs:write.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}

Request body

Required.

Data

{
  "required": true,
  "content": {
    "application/json": {
      "schema": {
        "oneOf": [
          {
            "type": "object",
            "properties": {
              "action": {
                "type": "string",
                "enum": [
                  "pause",
                  "resume"
                ]
              }
            },
            "required": [
              "action"
            ],
            "additionalProperties": false
          },
          {
            "type": "object",
            "properties": {
              "action": {
                "type": "string",
                "enum": [
                  "update_schedule"
                ]
              },
              "schedule_minutes": {
                "type": "integer",
                "minimum": 1,
                "maximum": 10080
              },
              "full_reconciliation_minutes": {
                "type": "integer",
                "minimum": 1,
                "maximum": 10080
              },
              "deletion_policy": {
                "type": "string",
                "enum": [
                  "preserve"
                ]
              },
              "expected_config_revision": {
                "type": "integer",
                "exclusiveMinimum": 0
              }
            },
            "required": [
              "action",
              "schedule_minutes",
              "expected_config_revision"
            ],
            "additionalProperties": false
          }
        ]
      }
    }
  }
}

Responses and errors

HTTP	Meaning	Format and schema
200	The updated sync view	`application/json` Sync
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
409	Problem (conflict)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

deleteSync

DELETE /v1/syncs/{syncId}

Deployment URL: https://ctx4.me/v1/syncs/{syncId}. Replace parameters in braces with actual IDs from the API.

Delete a sync (record history stays pullable)

Capability: syncs:write.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}

Responses and errors

HTTP	Meaning	Format and schema
200	The deleted sync view	`application/json` Sync
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
409	Problem (conflict)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

testFireSync

POST /v1/syncs/test-fire

Deployment URL: https://ctx4.me/v1/syncs/test-fire. Replace parameters in braces with actual IDs from the API.

Synchronously probe a bounded record sample without persisting anything

Capability: syncs:write.

The contract defines no additional parameters.

Request body

Required.

Data

{
  "required": true,
  "content": {
    "application/json": {
      "schema": {
        "type": "object",
        "properties": {
          "connection_id": {
            "type": "string",
            "format": "uuid",
            "example": "9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"
          },
          "entity": {
            "type": "string",
            "pattern": "^[A-Za-z0-9][A-Za-z0-9_.-]{0,79}$"
          },
          "sample_limit": {
            "type": "integer",
            "minimum": 1,
            "maximum": 50
          }
        },
        "required": [
          "connection_id",
          "entity"
        ],
        "additionalProperties": false
      }
    }
  }
}

Responses and errors

HTTP	Meaning	Format and schema
200	Normalized sample records plus the estimated total volume	`application/json` SyncTestFire
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable, provider_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

triggerSyncRun

POST /v1/syncs/{syncId}/trigger

Deployment URL: https://ctx4.me/v1/syncs/{syncId}/trigger. Replace parameters in braces with actual IDs from the API.

Enqueue a manual run

Capability: syncs:write.

Parameters

Name	Location	Required	Type and constraints
`Idempotency-Key`	header	no	{"type":"string"} Required when the sync source_kind is database_poll; retries with the same key return the original run. Optional for other source kinds.
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}

Responses and errors

HTTP	Meaning	Format and schema
202	The sync view with the planned run enqueued	`application/json` Sync
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
409	Problem (conflict). The source does not support a manual refresh, or a run is already active	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

listSyncRuns

GET /v1/syncs/{syncId}/runs

Deployment URL: https://ctx4.me/v1/syncs/{syncId}/runs. Replace parameters in braces with actual IDs from the API.

Run history with per-change-type counters and error causes

Capability: syncs:read.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}
`cursor`	query	no	{"type":"string","minLength":1,"maxLength":400,"pattern":"^[A-Za-z0-9_-]+$","description":"Opaque pagination cursor from a previous response"} Opaque pagination cursor from a previous response
`limit`	query	no	{"type":"integer","minimum":1,"maximum":100,"description":"Page size (1-100, default 25)"} Page size (1-100, default 25)

Responses and errors

HTTP	Meaning	Format and schema
200	One page of runs with the continuation cursor	`application/json` SyncRunList
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

pullSyncRecords

GET /v1/syncs/{syncId}/records

Deployment URL: https://ctx4.me/v1/syncs/{syncId}/records. Replace parameters in braces with actual IDs from the API.

Cursor-paged record change stream (the pull door onto the broker stream)

Capability: syncs:read.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}
`cursor`	query	no	{"type":"string","minLength":1,"maxLength":400,"pattern":"^[A-Za-z0-9_-]+$","description":"Opaque pagination cursor from a previous response"} Opaque pagination cursor from a previous response
`limit`	query	no	{"type":"integer","minimum":1,"maximum":100,"description":"Page size (1-100, default 25)"} Page size (1-100, default 25)

Responses and errors

HTTP	Meaning	Format and schema
200	One page of record changes ordered by modification cursor	`application/json` SyncRecordList
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
409	Problem (conflict)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

replaySyncRecords

POST /v1/syncs/{syncId}/replay

Deployment URL: https://ctx4.me/v1/syncs/{syncId}/replay. Replace parameters in braces with actual IDs from the API.

Replay dead-lettered record deliveries for a sync

Capability: syncs:write.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}

Responses and errors

HTTP	Meaning	Format and schema
200	The number of records reset for republication	`application/json` SyncReplay
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

listSyncableEntities

GET /v1/connectors/{connectorId}/syncable-entities

Deployment URL: https://ctx4.me/v1/connectors/{connectorId}/syncable-entities. Replace parameters in braces with actual IDs from the API.

Entities the catalog declares syncable for a connector

Capability: syncs:read.

Parameters

Name	Location	Required	Type and constraints
`connectorId`	path	yes	{"type":"string","pattern":"^[a-z0-9][a-z0-9-]{1,78}$","example":"bitrix24"}

Responses and errors

HTTP	Meaning	Format and schema
200	Syncable entities with strategy and default schedule	`application/json` SyncableEntityList
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

getSyncDeliveryCapabilities

GET /v1/sync-delivery-capabilities

Deployment URL: https://ctx4.me/v1/sync-delivery-capabilities. Replace parameters in braces with actual IDs from the API.

Delivery limits and semantics a consumer must satisfy

Capability: syncs:read.

The contract defines no additional parameters.

Responses and errors

HTTP	Meaning	Format and schema
200	Byte limits, envelope versions and delete semantics this deployment honours	`application/json` SyncDeliveryCapabilities
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

createSyncExport

POST /v1/syncs/{syncId}/exports

Deployment URL: https://ctx4.me/v1/syncs/{syncId}/exports. Replace parameters in braces with actual IDs from the API.

Open an immutable historical export over a captured frontier

Capability: syncs:write.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}

Request body

Required.

Data

{
  "required": true,
  "content": {
    "application/json": {
      "schema": {
        "type": "object",
        "properties": {
          "destination": {
            "type": "string",
            "enum": [
              "file",
              "bounded-replay-topic"
            ]
          },
          "entity": {
            "type": "string",
            "pattern": "^[A-Za-z0-9][A-Za-z0-9_.-]{0,79}$"
          },
          "idempotency_key": {
            "type": "string",
            "minLength": 1,
            "maxLength": 200
          },
          "range": {
            "type": "object",
            "properties": {
              "after_cursor": {
                "type": [
                  "string",
                  "null"
                ],
                "pattern": "^(0|[1-9][0-9]{0,18})$"
              },
              "through_cursor": {
                "type": [
                  "string",
                  "null"
                ],
                "pattern": "^(0|[1-9][0-9]{0,18})$"
              }
            },
            "required": [
              "after_cursor",
              "through_cursor"
            ],
            "additionalProperties": false
          }
        },
        "required": [
          "entity",
          "idempotency_key"
        ],
        "additionalProperties": false
      }
    }
  }
}

Responses and errors

HTTP	Meaning	Format and schema
201	Export session with its captured frontier and publication barrier	`application/json` SyncExportSession
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable, provider_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

cancelSyncExport

POST /v1/syncs/{syncId}/exports/{exportId}/cancel

Deployment URL: https://ctx4.me/v1/syncs/{syncId}/exports/{exportId}/cancel. Replace parameters in braces with actual IDs from the API.

Request cancellation of a running export

Capability: syncs:write.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}
`exportId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}

Responses and errors

HTTP	Meaning	Format and schema
202	Cancellation recorded; the session reaches `cancelled` once the runner stops	`application/json` SyncExportSession
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
409	Problem (conflict)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

getSyncExport

GET /v1/syncs/{syncId}/exports/{exportId}

Deployment URL: https://ctx4.me/v1/syncs/{syncId}/exports/{exportId}. Replace parameters in braces with actual IDs from the API.

Read an export session's state and progress

Capability: syncs:read.

Parameters

Name	Location	Required	Type and constraints
`syncId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}
`exportId`	path	yes	{"type":"string","format":"uuid","example":"9b2f6f2e-4b0a-4bd2-8b7e-3f8a1c2d4e5f"}

Responses and errors

HTTP	Meaning	Format and schema
200	Export session state, progress and terminal outcome	`application/json` SyncExportSession
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
404	Problem (not_found)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}

listSyncProviders

GET /v1/sync-providers

Deployment URL: https://ctx4.me/v1/sync-providers. Replace parameters in braces with actual IDs from the API.

List published Sync providers

Capability: syncs:read.

Parameters

Name	Location	Required	Type and constraints
`cursor`	query	no	{"type":"string","minLength":1,"maxLength":400,"pattern":"^[A-Za-z0-9_-]+$","description":"Opaque pagination cursor from a previous response"} Opaque pagination cursor from a previous response
`limit`	query	no	{"type":"integer","minimum":1,"maximum":100,"description":"Page size (1-100, default 20)"} Page size (1-100, default 20)

Responses and errors

HTTP	Meaning	Format and schema
200	Published providers with Sync entities; empty pages may have a continuation cursor	`application/json` SyncProviderListResponse
400	Problem (validation_failed)	`application/problem+json` Problem
401	Problem (authentication_required, invalid_api_key, api_key_expired, api_key_revoked)	`application/problem+json` Problem
403	Problem (capability_missing)	`application/problem+json` Problem
429	Problem (rate_limited)	`application/problem+json` Problem
500	Problem (internal)	`application/problem+json` Problem
503	Problem (service_unavailable)	`application/problem+json` Problem

Successful response headers:

Data

{
  "X-Request-Id": {
    "description": "Correlation id echoed on every response",
    "schema": {
      "type": "string"
    }
  },
  "RateLimit-Limit": {
    "description": "Per-key request limit for the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Remaining": {
    "description": "Requests remaining in the current window",
    "schema": {
      "type": "integer"
    }
  },
  "RateLimit-Reset": {
    "description": "Seconds until the current window resets",
    "schema": {
      "type": "integer"
    }
  }
}