---
title: "Changes to Check flag"
method: POST
path: "/flags/{key}/check"
---

# Changes to Check flag

`POST /flags/{key}/check`

> Every recorded change to this operation, newest first.
> 230 revisions in range; 1 not diffed.

## Timeline

Changed in 7 of 230 revisions.

- **2026-10-14** `a7b9253698a6`: 1 info
- **2026-10-07** `a611e91e8b55`: 1 info
- **2026-08-21** `84d047c6d921`: 1 breaking
- **2026-08-18** `0b3e2e375cca`: 1 info
- **2026-07-16** `ae246bb663d6`: 1 info
- **2026-06-21** `c077a885a9de`: 2 info
- **2026-06-09** `96d06fa89a73`: 2 info

## Changes

- **2026-10-14** `a7b9253698a6`: 1 info
  - added the new optional request property `preflight/allOf[subschema #1: PreflightRequestBody]/event_quantities`
- **2026-10-07** `a611e91e8b55`: 1 info
  - added the optional property `data/entitlement/allOf[subschema #1: FeatureEntitlement]/quantity_rates` to the response with the `200` status
- **2026-08-21** `84d047c6d921`: 1 breaking
  - the `preflight/allOf[subschema #1: PreflightRequestBody]/event_usage/allOf[subschema #1: PreflightEventUsageRequestBody]/event_subtype` request property's maxLength was decreased to `128`
- **2026-08-18** `0b3e2e375cca`: 1 info
  - added the new optional request property `preflight`
- **2026-07-16** `ae246bb663d6`: 1 info
  - added the optional property `data/entitlement/allOf[subschema #1: FeatureEntitlement]/warning_tiers` to the response with the `200` status
- **2026-06-21** `c077a885a9de`: 2 info
  - added the optional property `data/entitlement/allOf[subschema #1: FeatureEntitlement]/consumption_rate` to the response with the `200` status
  - added the optional property `data/entitlement/allOf[subschema #1: FeatureEntitlement]/event_subtype` to the response with the `200` status
- **2026-06-09** `96d06fa89a73`: 2 info
  - added the optional property `data/entitlement/allOf[subschema #1: FeatureEntitlement]/credit_reserved` to the response with the `200` status
  - added the optional property `data/entitlement/allOf[subschema #1: FeatureEntitlement]/credit_settled` to the response with the `200` status

---

[Operation](https://skmtc.dev/schematichq/apis/schematic-api/docs/flags/:key/check/post.md) - [API](https://skmtc.dev/schematichq/apis/schematic-api.md) - [Page](https://skmtc.dev/schematichq/apis/schematic-api/changes/flags/:key/check/post)