---
title: "Get chain parameters"
method: GET
path: "/api/v1/chain/parameters"
---

# Get chain parameters

`GET /api/v1/chain/parameters`

## Response `200`

Chain parameters

- Parameters
  - `unbondingLength` number, required
  - `pipelineLength` number, required
  - `epochsPerYear` number, required
  - `apr` number, required
  - `nativeTokenAddress` string, required
  - `chainId` string, required
  - `genesisTime` string, required
  - `minDuration` string, required
  - `minNumOfBlocks` string, required
  - `maxBlockTime` string, required
  - `checksums` object, required
  - `epochSwitchBlocksDelay` number, required
  - `cubicSlashingWindowLength` number, required
  - `duplicateVoteMinSlashRate` number, required
  - `lightClientAttackMinSlashRate` number, required

## Changes

> 50 revisions in range; 1 not diffed.

- **2025-07-24** `b04af842544e` — 8 breaking
  - the `apr` response's property type changed from `string` to `number` for status `200`
  - the `cubicSlashingWindowLength` response's property type changed from `string` to `number` for status `200`
  - the `duplicateVoteMinSlashRate` response's property type changed from `string` to `number` for status `200`
  - the `epochSwitchBlocksDelay` response's property type changed from `string` to `number` for status `200`
  - …4 more
- **2025-02-28** `cbae2569907f` — 2 info
  - added the required property `duplicateVoteMinSlashRate` to the response with the `200` status
  - added the required property `lightClientAttackMinSlashRate` to the response with the `200` status
- **2024-12-17** `6893b0238070` — 8 breaking
  - the `apr` response's property type changed from `number` to `string` for status `200`
  - the `cubicSlashingWindowLength` response's property type changed from `number` to `string` for status `200`
  - the `epochSwitchBlocksDelay` response's property type changed from `number` to `string` for status `200`
  - the `epochsPerYear` response's property type changed from `number` to `string` for status `200`
  - …4 more

[Change history](https://skmtc.dev/namada-net/apis/namada-interface-indexer-rest-api/changes/api/v1/chain/parameters/get.md)

---

[API](https://skmtc.dev/namada-net/apis/namada-interface-indexer-rest-api.md) · [All operations](https://skmtc.dev/namada-net/apis/namada-interface-indexer-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/namada-net/namada-interface-indexer-rest-api/revisions/89e2cef092d6/schema)