---
title: "Changes to Get Series List"
method: GET
path: "/series"
---

# Changes to Get Series List

`GET /series`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 10 of 69 revisions.

- **2026-09-11** `db7b5f46aeb4`: 1 info
- **2026-08-20** `f2e3ba6d8ce6`: 1 warning
- **2026-07-31** `a07481be8bf9`: 1 breaking, 2 warning, 1 info
- **2026-06-17** `5dacc8874900`: 3 breaking, 4 info
- **2026-04-13** `218c1f661cbd`: 1 warning
- **2026-03-08** `0efefc7b0f73`: 2 info
- **2026-01-26** `ea5437268cb9`: 1 info
- **2026-01-13** `a0b9f0879fd3`: 2 info
- **2025-11-06** `6ad7527f54aa`: 3 breaking, 1 warning, 17 info
- **2025-09-07** `6a92b9826d61`: 1 info

## Changes

- **2026-09-11** `db7b5f46aeb4`: 1 info
  - added the required property `series/items/categories` to the response with the `200` status
- **2026-08-20** `f2e3ba6d8ce6`: 1 warning
  - added the new `quadratic_with_combo_maker_fees` enum value to the `series/items/fee_type/allOf[#/components/schemas/FeeType]/` response property for the response status `200`
- **2026-07-31** `a07481be8bf9`: 1 breaking, 2 warning, 1 info
  - the response property `series/items/additional_prohibitions` became nullable for the status `200`
  - removed the optional property `service` from the response with the `400` status
  - removed the optional property `service` from the response with the `500` status
  - added the optional property `series/items/exchange_index` to the response with the `200` status
- **2026-06-17** `5dacc8874900`: 3 breaking, 4 info
  - the response property `series/items/settlement_sources` became nullable for the status `200`
  - the response property `series/items/tags` became nullable for the status `200`
  - the `series/items/fee_type` response's property type changed from `string` to no type for status `200`
  - added `#/components/schemas/FeeType` to the `series/items/fee_type` response property `allOf` list for the response status `200`
  - removed the `flat` enum value from the `series/items/fee_type` response property for the response status `200`
  - removed the `quadratic` enum value from the `series/items/fee_type` response property for the response status `200`
  - removed the `quadratic_with_maker_fees` enum value from the `series/items/fee_type` response property for the response status `200`
- **2026-04-13** `218c1f661cbd`: 1 warning
  - removed the optional property `series/items/volume` from the response with the `200` status
- **2026-03-08** `0efefc7b0f73`: 2 info
  - added the new optional `query` request parameter `min_updated_ts`
  - added the optional property `series/items/last_updated_ts` to the response with the `200` status
- **2026-01-26** `ea5437268cb9`: 1 info
  - added the optional property `series/items/volume_fp` to the response with the `200` status
- **2026-01-13** `a0b9f0879fd3`: 2 info
  - added the new optional `query` request parameter `include_volume`
  - added the optional property `series/items/volume` to the response with the `200` status
- **2025-11-06** `6ad7527f54aa`: 3 breaking, 1 warning, 17 info
  - for the `query` request parameter `include_product_metadata`, default value `false` was added
  - the response property `series/items/product_metadata` became nullable for the status `200`
  - the `series/items/settlement_sources/items/` response's property type changed from no type to `object` for status `200`
  - removed the optional property `series/items/product_metadata/key` from the response with the `200` status
  - the `query` request parameter `category` became optional
  - added the non-success response with the status `400`
  - added the non-success response with the status `500`
  - added the optional property `series/items/settlement_sources/items/name` to the response with the `200` status
  - added the optional property `series/items/settlement_sources/items/url` to the response with the `200` status
  - the response property `series` became required for the status `200`
  - the response property `series/items/additional_prohibitions` became required for the status `200`
  - the response property `series/items/category` became required for the status `200`
  - the response property `series/items/contract_terms_url` became required for the status `200`
  - the response property `series/items/contract_url` became required for the status `200`
  - the response property `series/items/fee_multiplier` became required for the status `200`
  - the response property `series/items/fee_type` became required for the status `200`
  - the response property `series/items/frequency` became required for the status `200`
  - the response property `series/items/settlement_sources` became required for the status `200`
  - the response property `series/items/tags` became required for the status `200`
  - the response property `series/items/ticker` became required for the status `200`
  - the response property `series/items/title` became required for the status `200`
- **2025-09-07** `6a92b9826d61`: 1 info
  - added the new optional `query` request parameter `tags`

---

[Operation](https://skmtc.dev/kalshi/apis/kalshi-trade-api-manual-endpoints/docs/series/get.md) - [API](https://skmtc.dev/kalshi/apis/kalshi-trade-api-manual-endpoints.md) - [Page](https://skmtc.dev/kalshi/apis/kalshi-trade-api-manual-endpoints/changes/series/get)