diff --git a/packages/jsonrpc/src/express.ts b/packages/jsonrpc/src/express.ts
index e6e3528..5126ac6 100644
--- a/packages/jsonrpc/src/express.ts
+++ b/packages/jsonrpc/src/express.ts
@@ -1,3 +1,4 @@
+import {FunctionPropertyNames} from './types'
 import {NextFunction, Request, Response, Router} from 'express'
 
 export const ERROR_PARSE = {
@@ -34,7 +35,7 @@ export interface ISuccessResponse<T> {
   error: null
 }
 
-export interface IJsonRpcError<T> {
+export interface IJSONRPCError<T> {
   code: number
   message: string
   data: T
@@ -44,10 +45,10 @@ export interface IErrorResponse<T> {
   jsonrpc: '2.0'
   id: number | null
   result: null
-  error: IJsonRpcError<T>
+  error: IJSONRPCError<T>
 }
 
-export type IRpcResponse<T> = ISuccessResponse<T> | IErrorResponse<T>
+export type IRPCResponse<T> = ISuccessResponse<T> | IErrorResponse<T>
 
 export function createSuccessResponse<T>(id: number, result: T)
   : ISuccessResponse<T> {
@@ -60,7 +61,7 @@ export function createSuccessResponse<T>(id: number, result: T)
 }
 
 export function createErrorResponse<T>(
-  id: number | null, error: IJsonRpcError<T>)
+  id: number | null, error: IJSONRPCError<T>)
   : IErrorResponse<T> {
   return {
     jsonrpc: '2.0',
@@ -70,11 +71,6 @@ export function createErrorResponse<T>(
   }
 }
 
-export type FunctionPropertyNames<T> = {
-  // tslint:disable-next-line
-  [K in keyof T]: T[K] extends Function ? K : never
-}[keyof T]
-
 export function pick<T, K extends FunctionPropertyNames<T>>(t: T, keys: K[])
   : Pick<T, K> {
   return keys.reduce((obj, key) => {
@@ -91,16 +87,18 @@ function isPromise(value: any): value is Promise<unknown> {
     typeof value.then === 'function' && typeof value.catch === 'function'
 }
 
+export type TGetContext<Context> = (req: Request) => Context
+
 /**
  * Adds middleware for handling JSON RPC requests. Expects JSON middleware to
  * already be configured.
  */
-export function jsonrpc<T, F extends FunctionPropertyNames<T>, Ctx>(
+export function jsonrpc<T, F extends FunctionPropertyNames<T>, Context>(
   service: T,
-  functions: F[],
-  getContext: (req: Request) => Ctx,
+  methods: F[],
+  getContext: TGetContext<Context>,
 ) {
-  const rpcService = pick(service, functions)
+  const rpcService = pick(service, methods)
 
   const router = Router()
 
diff --git a/packages/jsonrpc/src/index.ts b/packages/jsonrpc/src/index.ts
index 511c57a..603f87f 100644
--- a/packages/jsonrpc/src/index.ts
+++ b/packages/jsonrpc/src/index.ts
@@ -2,3 +2,4 @@ export * from './express'
 export * from './local'
 export * from './redux'
 export * from './remote'
+export * from './types'
diff --git a/packages/jsonrpc/src/remote.test.ts b/packages/jsonrpc/src/remote.test.ts
index 72819ad..d262254 100644
--- a/packages/jsonrpc/src/remote.test.ts
+++ b/packages/jsonrpc/src/remote.test.ts
@@ -7,7 +7,7 @@ import express from 'express'
 import {AddressInfo} from 'net'
 import {Server} from 'http'
 import {createRemoteClient} from './remote'
-import {jsonrpc} from './server'
+import {jsonrpc} from './express'
 import {keys} from 'ts-transformer-keys'
 
 describe('remote', () => {
diff --git a/packages/jsonrpc/src/remote.ts b/packages/jsonrpc/src/remote.ts
index fe6606d..a08fb36 100644
--- a/packages/jsonrpc/src/remote.ts
+++ b/packages/jsonrpc/src/remote.ts
@@ -1,10 +1,10 @@
 import Axios from 'axios'
-import {TAsyncified} from './types'
+import {FunctionPropertyNames, TAsyncified} from './types'
 
 export function createRemoteClient<T>(
   baseUrl: string,
   url: string,
-  methods: Array<keyof T>,
+  methods: Array<FunctionPropertyNames<T>>,
 ) {
   const axios = Axios.create({
     baseURL: baseUrl,
diff --git a/packages/jsonrpc/src/types.ts b/packages/jsonrpc/src/types.ts
index f318099..95dd5df 100644
--- a/packages/jsonrpc/src/types.ts
+++ b/packages/jsonrpc/src/types.ts
@@ -1,3 +1,5 @@
+import {IPendingAction, IResolvedAction, IRejectedAction} from '@rondo/client'
+
 type ArgumentTypes<T> =
   T extends (...args: infer U) => infer R ? U : never
 type RetType<T> = T extends (...args: any[]) => infer R ? R : never
@@ -7,7 +9,9 @@ type RetProm<T> = T extends Promise<any> ? T : Promise<T>
 type PromisifyReturnType<T> = (...a: ArgumentTypes<T>) =>
   RetProm<UnwrapHOC<RetType<T>>>
 
-import {IPendingAction, IResolvedAction, IRejectedAction} from '@rondo/client'
+export type FunctionPropertyNames<T> = {
+  [K in keyof T]: T[K] extends (...args: any[]) => any ? K : never
+}[keyof T]
 
 export type TAsyncified<T> = {
   [K in keyof T]: PromisifyReturnType<T[K]>