> ## Documentation Index > Fetch the complete documentation index at: https://endclose.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Update a reconciliation rule ## OpenAPI ````yaml /openapi.json patch /reconciliation_rules/{id} openapi: 3.1.0 info: title: End Close API description: REST API is used to interact with the End Close platform. license: name: MIT version: 1.0.0 servers: - url: https://api.endclose.com/v1 security: - ApiKeyAuth: [] paths: /reconciliation_rules/{id}: patch: summary: Update a reconciliation rule parameters: - in: path name: id required: true schema: type: string requestBody: required: true content: application/json: schema: type: object properties: filters: type: object priority: type: integer group_by: 2d045198-ae90-484b-9cf6-9764726867ef cardinality: 09828826-f091-4536-b6c8-a8547eb1ee72 rollup: e6725e28-f82a-4bef-940f-432a9b827f33 description: type: string responses: '200': description: Rule updated content: application/json: schema: $ref: '#/components/schemas/ReconciliationRule' '404': description: Rule not found components: schemas: ReconciliationRule: type: object required: - filters - reconciliation_id properties: id: type: integer priority: type: integer description: Lower values run first filters: type: object description: >- A rule tree with group nodes (AND/OR) and condition leaf nodes. Conditions compare a field on one side to a field on the other side. properties: operand: type: string enum: - and - or description: Logical operator for combining child rules rules: type: array description: Child rules (groups or conditions) items: type: object properties: key: type: string description: >- Source field to compare (e.g. "amount", "date", "metadata.invoice_id") operand: type: string enum: - eq - neq - gt - gte - lt - lte - contains - in - not_in description: Comparison operator value: type: string description: >- Target field to compare against (e.g. "amount", "external_id") tolerance_amount: type: number description: >- Optional tolerance for fuzzy matching with the 'eq' operand. Must be a positive number. tolerance_unit: type: string enum: - dollar - percent - day - month description: >- Unit for tolerance. 'dollar' and 'percent' for number fields, 'day' and 'month' for date fields. 'month' matches records in the same calendar month (tolerance_amount is ignored). transforms: type: object description: >- Optional transforms applied to field values before comparison. Each side (key/value) can have a single transform string, a parameterized transform object, or an array of transforms applied in order (first = innermost). Available transforms: lowercase, uppercase, alphanumeric_only, digits_only, first_n_chars (requires {"name": "first_n_chars", "args": {"n": 8}}). properties: key: description: Transform(s) for the Side A (key) field. value: description: Transform(s) for the Side B (value) field. group_by: type: array items: type: string description: >- Side A field keys to group records by before matching. The first key is the primary axis: in `rollup.group_by_kind` 'date' mode it must be a date field; in 'identifier' mode it can be any field (e.g. a batch id in metadata). Additional keys further segment Side A — in date mode each segment matches only Side B records with the same value for those fields; in identifier mode they form a composite cohort key. cardinality: type: string enum: - one_to_one - many_to_one default: one_to_one description: >- Match cardinality. 'one_to_one' matches single records on each side. 'many_to_one' rolls up multiple records on one side to match a single record on the other side — requires the `rollup` field to be set. rollup: type: object nullable: true description: >- Required when cardinality is 'many_to_one'. Configures how records on the many side are aggregated before matching. properties: lookback_days: type: integer minimum: 1 description: >- Optional. Number of days of history to include when rolling up records. Must be set together with `date_field`. Omit both to match without a time bound. date_field: type: string description: >- Optional. The date field on the rolled-up records used to anchor the lookback window. Must be set together with `lookback_days`. group_by_kind: type: string enum: - date - identifier default: date description: >- How `group_by` is interpreted. 'date' (default) buckets records per day and walks a date-window running sum. 'identifier' buckets records by exact value (e.g. a batch id) and matches the bucket total to one record on the other side, optionally bounded by the lookback window. dependentRequired: lookback_days: - date_field date_field: - lookback_days description: type: string description: Optional human-readable description of what this rule matches source: type: string enum: - user - ai - default description: >- Origin of the rule. 'user' = created manually via the API or UI. 'ai' = created by the AI rules engine. 'default' = seeded built-in rule. status: type: string enum: - active - proposed description: >- Active rules are used by the reconciliation engine. Proposed rules are awaiting review from a cold start. confidence: type: string enum: - high - medium - low description: >- AI confidence rating. Only present on AI-generated rules from cold start. sample_match_rate: type: string description: >- How many sample records this rule matched during dry-run evaluation (e.g. '42/50'). Only present on AI-generated rules from cold start. reconciliation_id: type: integer created_at: type: string format: date-time securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-KEY ````