> ## Documentation Index > Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt > Use this file to discover all available pages before exploring further. # Create a reconciliation context > Use this endpoint to create a new reconciliation context. Contexts are used to scope matching rules and organize your reconciliation configuration. ## OpenAPI ````yaml /en/openapi/v3-current/matcher.yaml post /v1/contexts openapi: 3.1.0 info: title: Matcher APIs description: >- Complete API reference for the Matcher reconciliation engine, providing automated transaction matching between Midaz Ledger and external systems. version: v2.1.1 license: name: Elastic License 2.0 url: https://www.elastic.co/licensing/elastic-license servers: - url: https://matcher.sandbox.lerian.net security: [] paths: /v1/contexts: post: tags: - Configuration Contexts summary: Create a reconciliation context description: >- Use this endpoint to create a new reconciliation context. Contexts are used to scope matching rules and organize your reconciliation configuration. operationId: createContext parameters: - description: A unique identifier for tracing the request across services. in: header name: X-Request-Id schema: type: string - $ref: '#/components/parameters/XIdempotencyKey' requestBody: content: application/json: schema: $ref: '#/components/schemas/CreateContextRequest' description: Context creation payload required: true responses: '201': description: >- Successfully created context. The response includes the `X-Idempotency-Replayed` header. If the value is false, the request was just processed. If the value is true, the response is a replay of a previously processed request. See [Retries and idempotency](/en/reference/retries-idempotency) for more details. content: application/json: schema: $ref: '#/components/schemas/ReconciliationContextResponse' headers: X-Idempotency-Replayed: $ref: '#/components/headers/XIdempotencyReplayed' '400': description: Invalid request payload content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: The request lacks valid authentication credentials. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '403': description: You do not have permission to access this resource. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '409': description: 'Idempotency conflict: request with same key in progress' content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - BearerAuth: [] components: parameters: XIdempotencyKey: name: X-Idempotency-Key in: header required: false description: >- Optional idempotency key for safe retries. Also accepts `Idempotency-Key` as an alternative header name. If the same key is sent again and the original request was already processed, the cached response is returned with `X-Idempotency-Replayed: true`. See [Retries and idempotency](/en/reference/retries-idempotency) for details. schema: type: string schemas: CreateContextRequest: properties: name: example: Bank Reconciliation Q1 maxLength: 100 minLength: 1 type: string type: allOf: - $ref: '#/components/schemas/ContextType' enum: - '1:1' - 1:N - N:M example: '1:1' interval: example: daily maxLength: 100 minLength: 1 type: string feeToleranceAbs: description: Absolute fee tolerance amount example: '0.01' type: string feeTolerancePct: description: Percentage fee tolerance example: '0.5' type: string feeNormalization: description: Fee normalization mode enum: - NET - GROSS example: NET type: string autoMatchOnUpload: description: Whether to trigger matching automatically after file upload example: false type: boolean sources: description: Optional list of sources to create inline with the context type: array maxItems: 10 items: $ref: '#/components/schemas/CreateContextSourceRequest' rules: description: Optional list of match rules to create inline with the context type: array maxItems: 50 items: type: object required: - priority - type properties: priority: description: Rule priority (lower number = higher priority) example: 1 minimum: 1 maximum: 1000 type: integer type: description: Matching strategy type enum: - EXACT - TOLERANCE - DATE_LAG example: EXACT type: string config: description: Rule-specific configuration additionalProperties: {} type: object required: - name - type - interval type: object ReconciliationContextResponse: description: Configuration context for matching rules properties: id: description: Unique identifier for the context example: 019c96a0-10a0-72d2-9fb0-2b7de8093182 type: string tenantId: description: Tenant ID this context belongs to example: 019c96a0-0a98-7287-9a31-786e0809c769 type: string name: description: Name of the reconciliation context example: Bank Reconciliation Q1 type: string type: description: Reconciliation topology type enum: - '1:1' - 1:N - N:M example: '1:1' type: string interval: description: Execution interval example: daily type: string status: description: Current status of the context enum: - DRAFT - ACTIVE - PAUSED - ARCHIVED example: ACTIVE type: string feeToleranceAbs: description: Absolute fee tolerance amount example: '0.50' type: string feeTolerancePct: description: Percentage fee tolerance example: '0.01' type: string feeNormalization: description: Fee normalization mode enum: - NET - GROSS example: NET type: string autoMatchOnUpload: description: Whether matching triggers automatically after file upload example: false type: boolean createdAt: description: Creation timestamp in RFC3339 format example: '2025-01-15T10:30:00.000Z' type: string updatedAt: description: Last update timestamp in RFC3339 format example: '2025-01-15T10:30:00.000Z' type: string type: object ErrorResponse: description: Standard error response returned by all API endpoints type: object required: - code - title - message properties: code: type: string description: HTTP status code as a string. example: '404' title: type: string description: Error type identifier. example: not_found message: type: string description: Human-readable error message with details. example: context not found error: type: string description: Deprecated. Error message for backward compatibility. deprecated: true details: description: Additional error context as key-value pairs additionalProperties: {} type: object ContextType: description: Reconciliation topology (cardinality between sources) enum: - '1:1' - 1:N - N:M type: string x-enum-varnames: - ContextTypeOneToOne - ContextTypeOneToMany - ContextTypeManyToMany CreateContextSourceRequest: description: Request payload for creating a source inline with a context type: object properties: name: description: Source name example: Primary Bank Account maxLength: 50 minLength: 1 type: string type: description: Source type enum: - LEDGER - BANK - GATEWAY - CUSTOM - FETCHER example: BANK type: string side: description: Which side of the reconciliation this source represents enum: - LEFT - RIGHT example: LEFT type: string config: description: Source-specific configuration additionalProperties: {} type: object mapping: description: Optional field mapping for this source additionalProperties: {} type: object required: - name - side - type headers: XIdempotencyReplayed: description: >- Indicates whether this response was served from the idempotency cache. When `true`, the response is a replay of the original request with the same idempotency key. See [Retries and idempotency](/en/reference/retries-idempotency) for details. schema: type: boolean example: false securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: JWT description: 'Bearer token authentication (format: "Bearer {token}")' ````