> For the complete documentation index, see [llms.txt](https://developers.polymath.network/polymesh-sdk-api-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.polymath.network/polymesh-sdk-api-reference/docs-v5/interfaces/constructorparams.md).

# ConstructorParams

## Hierarchy

* **ConstructorParams**

## Index

### Properties

* [keyring](/polymesh-sdk-api-reference/docs-v5/interfaces/constructorparams.md#keyring)
* [middlewareApi](/polymesh-sdk-api-reference/docs-v5/interfaces/constructorparams.md#middlewareapi)
* [pair](/polymesh-sdk-api-reference/docs-v5/interfaces/constructorparams.md#optional-pair)
* [polymeshApi](/polymesh-sdk-api-reference/docs-v5/interfaces/constructorparams.md#polymeshapi)

## Properties

### keyring

• **keyring**: [*CommonKeyring*](/polymesh-sdk-api-reference/docs-v5/globals.md#commonkeyring)

*Defined in* [*src/base/Context.ts:68*](https://github.com/PolymathNetwork/polymesh-sdk/blob/524b0225/src/base/Context.ts#L68)

### middlewareApi

• **middlewareApi**: *ApolloClient‹NormalizedCacheObject› | null*

*Defined in* [*src/base/Context.ts:67*](https://github.com/PolymathNetwork/polymesh-sdk/blob/524b0225/src/base/Context.ts#L67)

### `Optional` pair

• **pair**? : [*KeyringPair*](/polymesh-sdk-api-reference/docs-v5/interfaces/keyringpair.md)

*Defined in* [*src/base/Context.ts:69*](https://github.com/PolymathNetwork/polymesh-sdk/blob/524b0225/src/base/Context.ts#L69)

### polymeshApi

• **polymeshApi**: *ApiPromise*

*Defined in* [*src/base/Context.ts:66*](https://github.com/PolymathNetwork/polymesh-sdk/blob/524b0225/src/base/Context.ts#L66)