https://seamless.engineering/api-changelog/personio/ Every Personio API change our daily monitoring detects: breaking changes, deprecations and additions. en Sat, 10 Oct 2026 00:10:15 GMT 720 https://seamless.engineering/api-changelog/personio/#284b9f900b6b personio-284b9f900b6b Sat, 19 Sep 2026 12:00:00 GMT New feature New feature (2024-10-15). Three APIs have graduated from beta to GA status, providing stable endpoints for organizational structure and workplace management. https://seamless.engineering/api-changelog/personio/#6213efca8016 personio-6213efca8016 Sat, 19 Sep 2026 12:00:00 GMT New feature New feature (2024-11-15). Recruiting API has graduated from beta to GA status, indicating stability and long-term support commitment for recruitment-related integrations. https://seamless.engineering/api-changelog/personio/#f4cc25a236bd personio-f4cc25a236bd Sat, 19 Sep 2026 12:00:00 GMT Other Other (2024-11-15). TLS certificate has been updated, which may require clients to update their certificate chains or trust stores to maintain secure connections. https://seamless.engineering/api-changelog/personio/#0a0bd74db26c personio-0a0bd74db26c Tue, 15 Sep 2026 12:00:00 GMT New feature New feature (2025-09-01). New job reference field added to Employment endpoints, providing additional context linking employment records to job data. https://seamless.engineering/api-changelog/personio/#3158aa6f5d89 personio-3158aa6f5d89 Tue, 15 Sep 2026 12:00:00 GMT New feature New feature (2025-09-01). New endpoints or data fields for Jobs and Salary Bands have been added to the API. https://seamless.engineering/api-changelog/personio/#f9a3729123e6 personio-f9a3729123e6 Mon, 14 Sep 2026 12:00:00 GMT New feature New feature (2025-09-01). Three additional APIs (Cost Center, Org Unit, Workplace) removed from beta and are now generally available for production use. https://seamless.engineering/api-changelog/personio/#aa26ccf2fc67 personio-aa26ccf2fc67 Mon, 14 Sep 2026 12:00:00 GMT New feature New feature (2025-08-01). Job reference field added to Employment endpoint responses, providing additional context about associated job positions. https://seamless.engineering/api-changelog/personio/#c78bca3bd738 personio-c78bca3bd738 Mon, 14 Sep 2026 12:00:00 GMT New feature New feature (2025-08-01). New Jobs and Salary Bands endpoints have been added to the API for accessing job and compensation band data. https://seamless.engineering/api-changelog/personio/#1fc6c8579181 personio-1fc6c8579181 Mon, 14 Sep 2026 12:00:00 GMT New feature New feature (2025-04-01). New Reporting API V2 introduced with access to reports and attributes from analytics 2.0 platform, including new compensation and attendance data points not available in V1. https://seamless.engineering/api-changelog/personio/#83c97746495f personio-83c97746495f Mon, 14 Sep 2026 12:00:00 GMT New feature New feature (2025-05-01). New status query parameter added to GET /v2/persons endpoint enabling filtering of persons by employment status. https://seamless.engineering/api-changelog/personio/#fdd141603047 personio-fdd141603047 Mon, 14 Sep 2026 12:00:00 GMT Other Other (2025-11-01). TLS certificate upgrade from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations require no action but some clients may need to update certificate validation. https://seamless.engineering/api-changelog/personio/#69c3a2e0bfa3 personio-69c3a2e0bfa3 Fri, 11 Sep 2026 12:00:00 GMT New feature New feature (2024-10-22). Recruiting API has graduated from beta/preview status to General Availability, indicating stability for production use. https://seamless.engineering/api-changelog/personio/#02312bb888b5 personio-02312bb888b5 Fri, 11 Sep 2026 12:00:00 GMT Other Other (2024-10-22). TLS certificate has been updated, which may affect API connectivity if clients have strict certificate pinning or validation rules. https://seamless.engineering/api-changelog/personio/#5ef5bd1e4fd6 personio-5ef5bd1e4fd6 Thu, 10 Sep 2026 12:00:00 GMT Deprecation Deprecation (2024-08-20). query-string credentials on POST /v1/auth: Query-string based credential authentication on POST /v1/auth is deprecated with removal scheduled for 2026-12-04; integrations should switch to body-based authentication. https://seamless.engineering/api-changelog/personio/#c1a955879088 personio-c1a955879088 Thu, 10 Sep 2026 12:00:00 GMT Deprecation Deprecation (2024-10-20). V1 endpoints for Attendances and Projects are deprecated with extended deprecation deadline; integrations should migrate to V2 endpoints before removal date. https://seamless.engineering/api-changelog/personio/#77eb5040d95a personio-77eb5040d95a Thu, 10 Sep 2026 12:00:00 GMT New feature New feature (2024-09-20). New job reference field added to Employment endpoint response for better employment-to-job relationship tracking. https://seamless.engineering/api-changelog/personio/#fab96589bb29 personio-fab96589bb29 Thu, 10 Sep 2026 12:00:00 GMT New feature New feature (2024-09-20). New Jobs and Salary Bands endpoints or data now available in the API. https://seamless.engineering/api-changelog/personio/#b49b188f87ce personio-b49b188f87ce Thu, 10 Sep 2026 12:00:00 GMT New feature New feature (2024-11-20). Recruiting API beta flag removed and endpoints are now generally available, indicating API stability and readiness for production use. https://seamless.engineering/api-changelog/personio/#024ee0b8324c personio-024ee0b8324c Thu, 10 Sep 2026 12:00:00 GMT New feature New feature (2024-05-20). New Reporting API V2 introduced providing access to analytics 2.0 reports and new data points including compensation attributes (target earnings, total payout, goal bonus) and attendance attributes not available in V1. https://seamless.engineering/api-changelog/personio/#d4494ebc4c97 personio-d4494ebc4c97 Wed, 09 Sep 2026 12:00:00 GMT New feature New feature (2026-03-20). Beta flags removed from Cost Center, Org Unit, and Workplace APIs, indicating these endpoints are now production-ready. https://seamless.engineering/api-changelog/personio/#c84292a7618c personio-c84292a7618c Wed, 09 Sep 2026 12:00:00 GMT Deprecation Deprecation (2026-03-20). V1 endpoints for Attendances and Projects are deprecated with an extended deprecation deadline; integrations should migrate to V2 endpoints. https://seamless.engineering/api-changelog/personio/#8e6d301d96e3 personio-8e6d301d96e3 Wed, 09 Sep 2026 12:00:00 GMT New feature New feature (2026-05-19). Recruiting API beta flag has been removed and endpoints are now generally available, indicating API stability and maturity. https://seamless.engineering/api-changelog/personio/#8a2f8820209c personio-8a2f8820209c Wed, 09 Sep 2026 12:00:00 GMT Other Other (2026-05-20). Personio is updating TLS certificates from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations require no action but certificate pinning may need updates. https://seamless.engineering/api-changelog/personio/#0ec946fb49da personio-0ec946fb49da Tue, 08 Sep 2026 12:00:00 GMT New feature New feature (2024-09-27). Beta flags removed from Cost Center, Org Unit, and Workplace APIs; these endpoints are now generally available for production use. https://seamless.engineering/api-changelog/personio/#d9778398ad8c personio-d9778398ad8c Tue, 08 Sep 2026 12:00:00 GMT Deprecation Deprecation (2024-05-27). query-string credentials on POST /v1/auth: Query-string credentials authentication method deprecated with removal date 2026-12-04; integrations must migrate to body-based credential submission. https://seamless.engineering/api-changelog/personio/#a0b62f9cf698 personio-a0b62f9cf698 Tue, 08 Sep 2026 12:00:00 GMT Deprecation Deprecation (2024-09-27). V1 Attendances and Projects endpoints deprecated with extended deprecation deadline; integrations must migrate to V2 endpoints before removal date. https://seamless.engineering/api-changelog/personio/#00d7ada3510a personio-00d7ada3510a Tue, 08 Sep 2026 12:00:00 GMT New feature New feature (2024-06-27). New job reference field added to Employment endpoint responses for better job tracking. https://seamless.engineering/api-changelog/personio/#1a6b78037161 personio-1a6b78037161 Tue, 08 Sep 2026 12:00:00 GMT New feature New feature (2024-06-27). New Jobs and Salary Bands endpoints added to API capabilities. https://seamless.engineering/api-changelog/personio/#81c235402b10 personio-81c235402b10 Tue, 08 Sep 2026 12:00:00 GMT New feature New feature (2024-05-27). New Reporting API V2 introduced providing access to reports and analytics data with new compensation and attendance attributes not available in V1. https://seamless.engineering/api-changelog/personio/#fcb3e6a0ac48 personio-fcb3e6a0ac48 Tue, 08 Sep 2026 12:00:00 GMT New feature New feature (2024-05-27). New status query parameter added to GET /v2/persons endpoint enabling filtering by person's latest employment status. https://seamless.engineering/api-changelog/personio/#e2ccb0176042 personio-e2ccb0176042 Tue, 08 Sep 2026 12:00:00 GMT Other Other (2024-11-27). TLS certificate being updated from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations require no action but should verify certificate compatibility. https://seamless.engineering/api-changelog/personio/#7bee4767d9b7 personio-7bee4767d9b7 Sun, 06 Sep 2026 12:00:00 GMT Breaking Breaking (2025-06-24). The created_at field in document list response is changing its value format to UTC, effective 06.07.2026; this is a breaking change to response format. https://seamless.engineering/api-changelog/personio/#c143ac87e3b2 personio-c143ac87e3b2 Sun, 06 Sep 2026 12:00:00 GMT Deprecation Deprecation (2025-11-16). V1 endpoints for Attendances and Projects have been deprecated with extended deprecation deadline; integrations must migrate to V2 endpoints. https://seamless.engineering/api-changelog/personio/#abd911217499 personio-abd911217499 Sat, 05 Sep 2026 12:00:00 GMT New feature New feature (2024-11-28). Recruiting API beta flag removed and endpoints now in GA status, indicating API stability and readiness for production use. https://seamless.engineering/api-changelog/personio/#d8f825f2ea80 personio-d8f825f2ea80 Sat, 05 Sep 2026 12:00:00 GMT New feature New feature (2024-06-01). New reporting API introduced with access to analytics 2.0 platform reports and new data points including compensation and attendance attributes not available in V1. https://seamless.engineering/api-changelog/personio/#aebda2aa260c personio-aebda2aa260c Sat, 05 Sep 2026 12:00:00 GMT New feature New feature (2024-06-01). New status query parameter added to GET /v2/persons endpoint for filtering by employment status, expanding endpoint capabilities. https://seamless.engineering/api-changelog/personio/#9038a323d2bd personio-9038a323d2bd Sat, 05 Sep 2026 12:00:00 GMT Other Other (2024-11-29). Personio is updating TLS certificates from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations require no action but certificate pinning strategies may need review. https://seamless.engineering/api-changelog/personio/#d7c9402f6cbf personio-d7c9402f6cbf Thu, 03 Sep 2026 12:00:00 GMT New feature New feature (2026-04-10). Cost Center, Org Unit, and Workplace APIs have been promoted from beta to general availability with beta flag removed. https://seamless.engineering/api-changelog/personio/#b3d1e3f22b8e personio-b3d1e3f22b8e Thu, 03 Sep 2026 12:00:00 GMT Deprecation Deprecation (2026-02-01). query-string credentials on POST /v1/auth: Query-string credentials authentication method on POST /v1/auth endpoint is deprecated with removal scheduled for 2026-12-04; users should migrate to header-based authentication. https://seamless.engineering/api-changelog/personio/#5e0c1ec9f027 personio-5e0c1ec9f027 Thu, 03 Sep 2026 12:00:00 GMT Deprecation Deprecation (2026-05-10). V1 endpoints for Attendances and Projects API are deprecated with extended deprecation deadline; users must migrate to V2 endpoints. https://seamless.engineering/api-changelog/personio/#c5b5add363c9 personio-c5b5add363c9 Thu, 03 Sep 2026 12:00:00 GMT New feature New feature (2025-12-10). New Reporting API V2 with support for new data points including target earnings, total payout, goal bonus, bonus payout, and project/location tracking attributes not available in V1. https://seamless.engineering/api-changelog/personio/#ecbd7190318f personio-ecbd7190318f Thu, 03 Sep 2026 12:00:00 GMT New feature New feature (2025-12-10). New status query parameter added to GET /v2/persons endpoint to enable filtering persons by their latest employment status. https://seamless.engineering/api-changelog/personio/#73792d087514 personio-73792d087514 Thu, 03 Sep 2026 12:00:00 GMT Other Other (2026-06-10). TLS certificate being updated from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations require no action but connections should be validated for compatibility. https://seamless.engineering/api-changelog/personio/#d42752adfe34 personio-d42752adfe34 Wed, 02 Sep 2026 12:00:00 GMT New feature New feature (2026-05-29). Recruiting API beta flag removed and endpoints now in GA status, indicating API maturity and production-ready status. https://seamless.engineering/api-changelog/personio/#14591b5c014d personio-14591b5c014d Wed, 02 Sep 2026 12:00:00 GMT Other Other (2026-05-30). TLS certificate upgrade from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations unaffected but certificate pinning implementations may need updates. https://seamless.engineering/api-changelog/personio/#26ab114dbb22 personio-26ab114dbb22 Tue, 01 Sep 2026 12:00:00 GMT New feature New feature (2024-10-20). Beta flag removed from Cost Center, Org Unit, and Workplace APIs, promoting them to generally available status. https://seamless.engineering/api-changelog/personio/#7d61cf478110 personio-7d61cf478110 Tue, 01 Sep 2026 12:00:00 GMT Breaking Breaking (2024-09-20). Breaking change: created_at field format will change in document list response to return UTC; effective 2026-07-06 and requires integration updates to handle new timestamp format. https://seamless.engineering/api-changelog/personio/#dc1823a9ca77 personio-dc1823a9ca77 Tue, 01 Sep 2026 12:00:00 GMT Deprecation Deprecation (2024-11-20). V1 endpoints for Attendances and Projects are deprecated with extended deadline announced; integrations must plan migration to V2 equivalents. https://seamless.engineering/api-changelog/personio/#820b2af84077 personio-820b2af84077 Tue, 01 Sep 2026 12:00:00 GMT New feature New feature (2024-07-20). New status query parameter added to GET /v2/persons endpoint enabling filtering by person's employment status. https://seamless.engineering/api-changelog/personio/#ca763510491e personio-ca763510491e Tue, 01 Sep 2026 12:00:00 GMT Other Other (2024-12-20). TLS certificate on API endpoints will be updated from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations require no action but some clients may need certificate validation updates. https://seamless.engineering/api-changelog/personio/#973460250a59 personio-973460250a59 Sun, 30 Aug 2026 12:00:00 GMT New feature New feature (2024-10-19). Three APIs (Cost Center, Org Unit, and Workplace) have graduated from beta to GA status and are now available for production use. https://seamless.engineering/api-changelog/personio/#387bfac3807a personio-387bfac3807a Sun, 30 Aug 2026 12:00:00 GMT Breaking Breaking (2024-09-19). The created_at field in document-management endpoint will change to return UTC timestamps, effective 2026-07-06, representing a breaking change to response format. https://seamless.engineering/api-changelog/personio/#3d210bff66c6 personio-3d210bff66c6 Sun, 30 Aug 2026 12:00:00 GMT New feature New feature (2024-07-19). New Reporting API V2 introduced with access to analytics 2.0 platform reports and new compensation/attendance data points unavailable in V1. https://seamless.engineering/api-changelog/personio/#4000822499f5 personio-4000822499f5 Fri, 28 Aug 2026 12:00:00 GMT Breaking Breaking (2024-10-24). The created_at field response format will change to UTC with effective date of 06.07.2026. https://seamless.engineering/api-changelog/personio/#04b396d12269 personio-04b396d12269 Thu, 27 Aug 2026 12:00:00 GMT New feature New feature (2026-05-15). Beta flags removed from Cost Center, Org Unit, and Workplace APIs; these endpoints are now generally available. https://seamless.engineering/api-changelog/personio/#06aaa748bd98 personio-06aaa748bd98 Thu, 27 Aug 2026 12:00:00 GMT New feature New feature (2026-03-15). New job reference field added to Employment endpoints, providing additional data about associated jobs. https://seamless.engineering/api-changelog/personio/#34b566001dfc personio-34b566001dfc Thu, 27 Aug 2026 12:00:00 GMT New feature New feature (2026-06-09). Recruiting API has graduated from beta to general availability with beta flag removed from all recruiting endpoints. https://seamless.engineering/api-changelog/personio/#c96c67bcf254 personio-c96c67bcf254 Thu, 27 Aug 2026 12:00:00 GMT New feature New feature (2026-01-15). New status query parameter added to GET /v2/persons endpoint enabling filtering by employment status. https://seamless.engineering/api-changelog/personio/#6fe908740755 personio-6fe908740755 Wed, 26 Aug 2026 12:00:00 GMT New feature New feature (2026-02-13). Cost Center, Org Unit, and Workplace APIs removed beta flag and are now generally available; endpoints are stable for production use. https://seamless.engineering/api-changelog/personio/#1aa279fa6d3e personio-1aa279fa6d3e Wed, 26 Aug 2026 12:00:00 GMT Deprecation Deprecation (2026-02-13). Attendances and Projects V1 endpoints are deprecated with extended deprecation deadline; integrations must migrate to V2 endpoints before removal date. https://seamless.engineering/api-changelog/personio/#b6aaa217b027 personio-b6aaa217b027 Wed, 26 Aug 2026 12:00:00 GMT New feature New feature (2025-10-24). Job reference field is now available on Employment endpoint, enabling additional data retrieval. https://seamless.engineering/api-changelog/personio/#701f82341815 personio-701f82341815 Wed, 26 Aug 2026 12:00:00 GMT New feature New feature (2026-01-17). Recruiting API has removed beta flag and is now generally available; endpoints can be considered stable for production use. https://seamless.engineering/api-changelog/personio/#d3e6ee1e9be7 personio-d3e6ee1e9be7 Wed, 26 Aug 2026 12:00:00 GMT New feature New feature (2025-07-17). New Reporting API V2 endpoints introduced for accessing reports and attributes from analytics 2.0 platform, including new compensation and attendance attributes. https://seamless.engineering/api-changelog/personio/#0e39985e5236 personio-0e39985e5236 Wed, 26 Aug 2026 12:00:00 GMT New feature New feature (2025-08-15). New status query parameter added to GET /v2/persons endpoint for filtering by person's latest employment status. https://seamless.engineering/api-changelog/personio/#5aad9edc35d1 personio-5aad9edc35d1 Mon, 24 Aug 2026 12:00:00 GMT New feature New feature (2024-11-21). Cost Center, Org Unit, and Workplace APIs have reached general availability status with stabilized endpoints. https://seamless.engineering/api-changelog/personio/#06873a22a450 personio-06873a22a450 Mon, 24 Aug 2026 12:00:00 GMT Bug fix Bug fix (2024-10-17). Document Management API's created_at field now returns UTC timestamp instead of potentially using a different timezone. https://seamless.engineering/api-changelog/personio/#985e2ffff73d personio-985e2ffff73d Mon, 24 Aug 2026 12:00:00 GMT Deprecation Deprecation (2024-11-21). V1 endpoints for Attendances and Projects APIs have been deprecated and require migration to V2 versions. https://seamless.engineering/api-changelog/personio/#4f0e2199c477 personio-4f0e2199c477 Sun, 23 Aug 2026 12:00:00 GMT New feature New feature (2024-11-19). Cost Center, Org Unit and Workplace APIs have graduated to General Availability status, indicating they are now stable for production use. https://seamless.engineering/api-changelog/personio/#592e2bba5ff8 personio-592e2bba5ff8 Sun, 23 Aug 2026 12:00:00 GMT Breaking Breaking (2024-10-02). The created_at field in document list response will change its timezone handling to UTC, effective 06.07.2026; this is a breaking change requiring timestamp handling updates. https://seamless.engineering/api-changelog/personio/#4a92f5ae7d25 personio-4a92f5ae7d25 Sun, 23 Aug 2026 12:00:00 GMT Deprecation Deprecation (2024-11-19). V1 endpoints for Attendances and Projects have been deprecated and will be removed in the future, requiring migration to V2 endpoints. https://seamless.engineering/api-changelog/personio/#b2d86f525171 personio-b2d86f525171 Sun, 23 Aug 2026 12:00:00 GMT New feature New feature (2024-09-19). Employment endpoint enriched with job reference field, providing additional context linking employment records to job definitions. https://seamless.engineering/api-changelog/personio/#0aecc76e5745 personio-0aecc76e5745 Sun, 23 Aug 2026 12:00:00 GMT New feature New feature (2024-09-19). New Jobs and Salary Bands endpoints added to API, expanding available data models for integration. https://seamless.engineering/api-changelog/personio/#36de467fff58 personio-36de467fff58 Sun, 23 Aug 2026 12:00:00 GMT New feature New feature (2024-06-19). New Reporting API V2 introduced providing access to new report builder analytics with additional data points including compensation and attendance attributes not available in V1. https://seamless.engineering/api-changelog/personio/#a619b68759df personio-a619b68759df Sun, 23 Aug 2026 12:00:00 GMT New feature New feature (2024-07-19). New status query parameter added to GET /v2/persons endpoint to enable filtering by person's latest employment status. https://seamless.engineering/api-changelog/personio/#3f7a3d65eae2 personio-3f7a3d65eae2 Sat, 22 Aug 2026 12:00:00 GMT New feature New feature (2025-12-15). Beta flags removed from Cost Center, Org Unit, and Workplace APIs, which are now generally available and production-ready. https://seamless.engineering/api-changelog/personio/#8daca386b20c personio-8daca386b20c Sat, 22 Aug 2026 12:00:00 GMT Deprecation Deprecation (2025-12-15). V1 endpoints for Attendances and Projects have been deprecated with extended deprecation deadline; integrations must migrate to V2 endpoints before removal. https://seamless.engineering/api-changelog/personio/#50aa287ac78b personio-50aa287ac78b Fri, 21 Aug 2026 12:00:00 GMT New feature New feature (2026-08-15). Beta flag removed from Cost Center, Org Unit and Workplace API endpoints, marking them as generally available and production-ready. https://seamless.engineering/api-changelog/personio/#631d11d9b273 personio-631d11d9b273 Fri, 21 Aug 2026 12:00:00 GMT Deprecation Deprecation (2026-05-01). query-string credentials on POST /v1/auth: Query-string based credentials for POST /v1/auth are deprecated with removal scheduled for 2026-12-04; integrations should migrate to header-based authentication. https://seamless.engineering/api-changelog/personio/#8123ccda196c personio-8123ccda196c Fri, 21 Aug 2026 12:00:00 GMT New feature New feature (2026-06-15). New endpoints for Jobs and Salary Bands have been added to the API. https://seamless.engineering/api-changelog/personio/#99bf7db5311e personio-99bf7db5311e Fri, 21 Aug 2026 12:00:00 GMT New feature New feature (2026-09-14). Beta flag removed from Recruiting API endpoints, indicating the API is now production-ready and supported. https://seamless.engineering/api-changelog/personio/#1731c63d4147 personio-1731c63d4147 Fri, 21 Aug 2026 12:00:00 GMT Other Other (2026-09-15). Personio is updating TLS certificates from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations require no action but certificate pinning implementations may need updates. https://seamless.engineering/api-changelog/personio/#be6efc20e939 personio-be6efc20e939 Thu, 20 Aug 2026 12:00:00 GMT New feature New feature (2025-12-16). Cost Center, Org Unit, and Workplace APIs have graduated from beta status and are now generally available for production use. https://seamless.engineering/api-changelog/personio/#a0a80e392149 personio-a0a80e392149 Thu, 20 Aug 2026 12:00:00 GMT New feature New feature (2024-11-14). Cost Center, Org Unit, and Workplace APIs have graduated from beta to general availability status. https://seamless.engineering/api-changelog/personio/#60304d4851ed personio-60304d4851ed Thu, 20 Aug 2026 12:00:00 GMT Bug fix Bug fix (2024-10-10). The created_at field in document management endpoint now returns UTC timezone, fixing a timezone inconsistency issue. https://seamless.engineering/api-changelog/personio/#adb766c66a4e personio-adb766c66a4e Thu, 20 Aug 2026 12:00:00 GMT Deprecation Deprecation (2025-12-27). V1 endpoints for Attendances and Projects have been deprecated with an extended removal deadline; integrations should migrate to V2 versions. https://seamless.engineering/api-changelog/personio/#279d81df94dd personio-279d81df94dd Thu, 20 Aug 2026 12:00:00 GMT Deprecation Deprecation (2024-11-28). Attendances and Projects V1 endpoints are deprecated and will be removed in the future, requiring migration to newer versions. https://seamless.engineering/api-changelog/personio/#35de9db63f5d personio-35de9db63f5d Thu, 20 Aug 2026 12:00:00 GMT New feature New feature (2026-01-15). Recruiting API has been promoted from beta to generally available status, removing beta flag from all endpoints. https://seamless.engineering/api-changelog/personio/#12a7ed18975b personio-12a7ed18975b Thu, 20 Aug 2026 12:00:00 GMT New feature New feature (2024-12-18). Recruiting API has graduated from beta to GA status with all endpoints now generally available for production use. https://seamless.engineering/api-changelog/personio/#4d15692eb175 personio-4d15692eb175 Thu, 20 Aug 2026 12:00:00 GMT Other Other (2026-01-16). TLS certificate will be updated from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations require no action but clients should verify compatibility. https://seamless.engineering/api-changelog/personio/#f9fbdaba7330 personio-f9fbdaba7330 Thu, 20 Aug 2026 12:00:00 GMT Other Other (2024-12-19). TLS certificate upgrade from RSA 2048-bit to ECDSA P-256 scheduled for Q3 2026; most integrations require no action but certificate pinning implementations may need updates. https://seamless.engineering/api-changelog/personio/#6f6638614dc5 personio-6f6638614dc5 Wed, 19 Aug 2026 12:00:00 GMT New feature New feature (2026-06-16). Recruiting API beta flag removed and endpoints are now generally available, marking graduation from beta status. https://seamless.engineering/api-changelog/personio/#514d2d501ba4 personio-514d2d501ba4 Mon, 17 Aug 2026 12:00:00 GMT Breaking Breaking (2026-04-24). The created_at field in document list response will change its return format to UTC, effective 2026-07-06, which could break integrations expecting a different timezone format. https://seamless.engineering/api-changelog/personio/#52a7a71a00ae personio-52a7a71a00ae Mon, 17 Aug 2026 12:00:00 GMT Deprecation Deprecation (2026-10-01). query-string credentials on POST /v1/auth: Query-string based credentials authentication method on POST /v1/auth is deprecated with removal scheduled for 2026-12-04; integrations using this method must migrate to header-based authentication. https://seamless.engineering/api-changelog/personio/#6123141b4a93 personio-6123141b4a93 Mon, 17 Aug 2026 12:00:00 GMT New feature New feature (2025-09-01). New reporting API introduced providing access to reports and attributes data from the new report builder, including new compensation and attendance attributes not available in V1. https://seamless.engineering/api-changelog/personio/#27012107303d personio-27012107303d Mon, 17 Aug 2026 12:00:00 GMT Other Other (2026-01-17). TLS certificate on API endpoints will be updated from RSA 2048-bit to ECDSA P-256 in Q3 2026; most integrations require no action but certificate pinning implementations may be affected. https://seamless.engineering/api-changelog/personio/#0709cbb2c026 personio-0709cbb2c026 Sun, 16 Aug 2026 12:00:00 GMT New feature New feature (2026-05-19). Beta flag removed from Cost Center, Org Unit, and Workplace endpoints, which are now generally available. https://seamless.engineering/api-changelog/personio/#0c1cb3242cdb personio-0c1cb3242cdb Sun, 16 Aug 2026 12:00:00 GMT Deprecation Deprecation (2026-06-04). V1 endpoints for Attendances and Projects are deprecated with extended deprecation deadline; users should migrate to newer versions. https://seamless.engineering/api-changelog/personio/#15abcafbd3de personio-15abcafbd3de Sun, 16 Aug 2026 12:00:00 GMT New feature New feature (2026-06-18). Recruiting API beta flag removed and endpoints are now generally available, indicating API maturation and stability. https://seamless.engineering/api-changelog/personio/#33a96142f24e personio-33a96142f24e Sun, 16 Aug 2026 12:00:00 GMT Other Other (2026-06-19). TLS certificate on API endpoints updating from RSA 2048-bit to ECDSA P-256 in Q3 2026; no action required for most integrations. https://seamless.engineering/api-changelog/personio/#9ba99831462a personio-9ba99831462a Sat, 15 Aug 2026 12:00:00 GMT New feature New feature (2026-01-15). Beta flag removed from Cost Center, Org Unit and Workplace APIs making them generally available for production integrations.