Change history: API guide for the model

← Changelog. Entries: 38.

• 2026-10-01 FIX-1001-23: a third-party agent key is no longer told to obtain a deploy key
• 2026-09-24 FIX-0924-6: the aggregation reference in GET /v1/guide describes POST aggregation and numeric-function fields by type
• 2026-09-15 NEW-0915-13: task comment attachments and comment file download
• 2026-09-14 FIX-0914-10: open line queue fields refuse clearly instead of surfacing a Bitrix24 error
• 2026-09-14 FIX-0914-23: rate limit descriptions state the platform-wide cap and point at the header with the effective value
• 2026-09-13 FIX-0913-1: the API description now names the refusals shared by every operation
• 2026-09-11 FIX-0911-1: the OpenAPI spec's scope slice no longer pulls in unrelated hand-written sections
• 2026-09-11 FIX-0911-2: POST /v1/doc-templates refusals point to the file field, not to Drive
• 2026-09-01 FIX-0901-3: rate limit descriptions now name the replica share, not just the total cap
• 2026-08-29 FIX-0829-1: importable field flag in guide
• 2026-08-28 FIX-0828-3: GET /v1/guide returns the paging rules as a single paginationCanon block
• 2026-08-27 NEW-0827-9: array element schemas are available in field contracts
• 2026-08-27 NEW-0827-11: the self-description now points at the Cowork/Code promo code docs
• 2026-08-27 FIX-0827-12: the Cowork/Code rate limits no longer quote a number the client never receives
• 2026-08-26 FIX-0826-3: 404 responses for Bitrix24 method names now point to the V1 route
• 2026-08-24 FIX-0824-15: the datePeriod field schema is now visible in GET /v1/bookings/fields
• 2026-08-21 FIX-0821-2: currencyId and explicit selection of non-returned fields
• 2026-08-20 NEW-0820-1: the Cowork subscription snapshot is described in the API specification
• 2026-08-12 NEW-0812-6: deal product rows: the response now signals truncation
• 2026-08-11 FIX-0811-12: the /v1/guide reference returns a docs link for the telephony-lines entity
• 2026-08-10 BC-0810-3: batch reads no longer bypass an operation the entity turns off
• 2026-08-07 BC-0807-17: an activities aggregate needs a narrowing filter
• 2026-08-06 FIX-0806-3: the operation registry in GET /v1/guide now lists what actually works
• 2026-08-06 NEW-0806-14: the site and employee field maps now carry labels, descriptions and value lists
• 2026-08-05 FIX-0805-10: the API schema now covers the session exchange and embed slots, and states its own coverage honestly
• 2026-08-04 FIX-0804-5: bank details: entityTypeId marked as a field that is never returned
• 2026-08-04 FIX-0804-6: discover names the real path identifier
• 2026-08-04 FIX-0804-7: telephony lines: name declared nullable, serverName marked as never returned
• 2026-07-30 FIX-0730-13: the spec declares create-mandatory fields on create, and stopped demanding them on update
• 2026-07-28 NEW-0728-3: pointers to Open Channels, task checklists and app blueprints in the self-description responses
• 2026-07-28 BC-0728-5: unified 404 envelope for nonexistent /v1 routes
• 2026-07-17 NEW-0717-3: the catalog field references now report nullable fields
• 2026-07-14 NEW-0714-1: OpenAPI spec: 3.1 validity, field semantics, and a scope slice
• 2026-07-14 FIX-0714-18: clearer /fields error for task comments and task time entries
• 2026-07-14 FIX-0714-23: OpenAPI: per-entity batch endpoint body is now documented correctly (action + items/ids/calls)
• 2026-07-09 NEW-0709-10: Key self-description in GET /v1/guide
• 2026-07-02 NEW-0702-12: workgroups: aggregate operation and groupBy fields exposed
• 2026-07-01 NEW-0701-4: Extended static field contract in /v1/guide and a schema-discovery pointer in /v1/me