---
title: "Changes to Get Dilution Curves"
method: GET
path: "/max_pc_curves/{cdm_id}"
---

# Changes to Get Dilution Curves

`GET /max_pc_curves/{cdm_id}`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 11 revisions.

- **2026-09-22** `e83b4e399119`: 18 breaking, 4 info

## Changes

- **2026-09-22** `e83b4e399119`: 18 breaking, 4 info
  - the response property `combined/hbr` became optional for the status `200`
  - the response property `primary/hbr` became optional for the status `200`
  - the response property `secondary/hbr` became optional for the status `200`
  - the `combined/hbr` response's property type changed from `object` to no type for status `200`
  - the `primary/hbr` response's property type changed from `object` to no type for status `200`
  - the `secondary/hbr` response's property type changed from `object` to no type for status `200`
  - removed the required property `combined/hbr/is_sensitive` from the response with the `200` status
  - removed the required property `combined/hbr/maxima` from the response with the `200` status
  - removed the required property `combined/hbr/scales` from the response with the `200` status
  - removed the required property `combined/hbr/values` from the response with the `200` status
  - removed the required property `primary/hbr/is_sensitive` from the response with the `200` status
  - removed the required property `primary/hbr/maxima` from the response with the `200` status
  - removed the required property `primary/hbr/scales` from the response with the `200` status
  - removed the required property `primary/hbr/values` from the response with the `200` status
  - removed the required property `secondary/hbr/is_sensitive` from the response with the `200` status
  - removed the required property `secondary/hbr/maxima` from the response with the `200` status
  - removed the required property `secondary/hbr/scales` from the response with the `200` status
  - removed the required property `secondary/hbr/values` from the response with the `200` status
  - added the optional property `pc_method` to the response with the `200` status
  - added `#/components/schemas/SensitivityCurve, subschema #2` to the `combined/hbr` response property `anyOf` list for the response status `200`
  - added `#/components/schemas/SensitivityCurve, subschema #2` to the `primary/hbr` response property `anyOf` list for the response status `200`
  - added `#/components/schemas/SensitivityCurve, subschema #2` to the `secondary/hbr` response property `anyOf` list for the response status `200`

---

[Operation](https://skmtc.dev/satcat/apis/satcat-service-api/docs/max_pc_curves/:cdm_id/get.md) - [API](https://skmtc.dev/satcat/apis/satcat-service-api.md) - [Page](https://skmtc.dev/satcat/apis/satcat-service-api/changes/max_pc_curves/:cdm_id/get)