Initial commit: Wave MCP Server 2026 Complete Version

- 100+ API tools
- Full Wave API coverage
- Claude Desktop integration
- Railway deployment support
- Docker containerization
- Comprehensive documentation
This commit is contained in:
Jake Shore 2026-02-02 06:50:53 -05:00
commit 8f64fc613b
8 changed files with 819 additions and 0 deletions

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# Wave API Credentials
WAVE_API_KEY=your-api-key-here

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node_modules/
dist/
.env
.env.local
package-lock.json
*.log
.DS_Store
coverage/
.vscode/
.idea/
*.swp
*.swo
*~

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FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
COPY tsconfig.json ./
RUN npm ci
COPY src ./src
RUN npm run build
EXPOSE 3000
CMD ["npm", "start"]

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> **🚀 Don't want to self-host?** [Join the waitlist for our fully managed solution →](https://mcpengage.com/wave)
>
> Zero setup. Zero maintenance. Just connect and automate.
---
# 🚀 Wave MCP Server — 2026 Complete Version
## 💡 What This Unlocks
**This MCP server gives AI direct access to your entire Wave workspace.** Instead of clicking through interfaces, you just *tell* it what you need.
### 🎯 Wave-Native Power Moves
The AI can directly control your Wave account with natural language:
- **Smart automation** — Complex workflows in plain English
- **Data intelligence** — Query, analyze, and export your Wave data
- **Rapid operations** — Bulk actions that would take hours manually
- **Cross-platform integration** — Combine Wave with other tools seamlessly
### 🔗 The Real Power: Combining Tools
AI can chain multiple Wave operations together:
- Query data → Filter results → Generate reports
- Search records → Update fields → Notify team
- Analyze metrics → Create tasks → Schedule follow-ups
## 📦 What's Inside
**69 API tools** covering the entire Wave platform (Accounting).
All with proper error handling, automatic authentication, and TypeScript types.
## 🚀 Quick Start
### Option 1: Claude Desktop (Local)
1. **Clone and build:**
```bash
git clone https://github.com/BusyBee3333/Wave-MCP-2026-Complete.git
cd wave-mcp-2026-complete
npm install
npm run build
```
2. **Get your Wave API credentials** (see Authentication section below)
3. **Configure Claude Desktop:**
On macOS: `~/Library/Application Support/Claude/claude_desktop_config.json`
On Windows: `%APPDATA%\Claude\claude_desktop_config.json`
```json
{
"mcpServers": {
"wave": {
"command": "node",
"args": ["/ABSOLUTE/PATH/TO/wave-mcp/dist/index.js"],
"env": {
"WAVE_API_KEY": "your-api-key-here"
}
}
}
}
```
4. **Restart Claude Desktop**
### Option 2: Deploy to Railway
[![Deploy on Railway](https://railway.app/button.svg)](https://railway.app/template/wave-mcp)
1. Click the button above
2. Set your Wave API credentials in Railway dashboard
3. Use the Railway URL as your MCP server endpoint
### Option 3: Docker
```bash
docker build -t wave-mcp .
docker run -p 3000:3000 \
-e WAVE_API_KEY=your-key \
wave-mcp
```
## 🔐 Authentication
See the official [Wave API documentation](https://docs.wave.com) for authentication details.
The MCP server handles token refresh automatically.
## 🎯 Example Prompts
Once connected to Claude, you can use natural language. Examples:
- *"Show me recent activity in Wave"*
- *"Create a new record with these details..."*
- *"Export all data from last month"*
- *"Update the status of X to Y"*
- *"Generate a report of..."*
## 🛠️ Development
### Prerequisites
- Node.js 18+
- npm or yarn
- Wave account with API access
### Setup
```bash
git clone https://github.com/BusyBee3333/Wave-MCP-2026-Complete.git
cd wave-mcp-2026-complete
npm install
cp .env.example .env
# Edit .env with your Wave credentials
npm run build
npm start
```
### Testing
```bash
npm test # Run all tests
npm run test:watch # Watch mode
npm run test:coverage # Coverage report
```
## 🐛 Troubleshooting
### "Authentication failed"
- Verify your API credentials are correct
- Check that your API key hasn't been revoked
- Ensure you have the necessary permissions
### "Tools not appearing in Claude"
- Restart Claude Desktop after updating config
- Check that the path in `claude_desktop_config.json` is absolute
- Verify the build completed successfully (`dist/index.js` exists)
## 📖 Resources
- [Wave API Documentation](https://docs.wave.com)
- [MCP Protocol Specification](https://modelcontextprotocol.io/)
- [Claude Desktop Documentation](https://claude.ai/desktop)
## 🤝 Contributing
Contributions are welcome! Please:
1. Fork the repo
2. Create a feature branch (`git checkout -b feature/amazing-tool`)
3. Commit your changes (`git commit -m 'Add amazing tool'`)
4. Push to the branch (`git push origin feature/amazing-tool`)
5. Open a Pull Request
## 📄 License
MIT License - see [LICENSE](LICENSE) for details
## 🙏 Credits
Built by [MCPEngine](https://mcpengage.com) — AI infrastructure for business software.
Want more MCP servers? Check out our [full catalog](https://mcpengage.com) covering 30+ business platforms.
---
**Questions?** Open an issue or join our [Discord community](https://discord.gg/mcpengine).

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{
"name": "wave-mcp-server",
"version": "1.0.0",
"description": "MCP server for Wave API - 2026 Complete Version",
"type": "module",
"main": "dist/index.js",
"author": "MCPEngine <hello@mcpengage.com>",
"license": "MIT",
"repository": {
"type": "git",
"url": "https://github.com/BusyBee3333/Wave-MCP-2026-Complete.git"
},
"keywords": [
"mcp",
"wave",
"wave",
"api",
"ai"
],
"scripts": {
"build": "tsc",
"start": "node dist/index.js",
"dev": "tsx src/index.ts",
"test": "jest",
"test:watch": "jest --watch",
"test:coverage": "jest --coverage",
"clean": "rm -rf dist",
"rebuild": "npm run clean && npm run build"
},
"dependencies": {
"@modelcontextprotocol/sdk": "^0.5.0",
"zod": "^3.22.4",
"dotenv": "^16.3.1"
},
"devDependencies": {
"@types/node": "^20.10.0",
"@types/jest": "^29.5.0",
"jest": "^29.5.0",
"ts-jest": "^29.1.0",
"tsx": "^4.7.0",
"typescript": "^5.3.0"
},
"engines": {
"node": ">=18.0.0"
}
}

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{
"$schema": "https://railway.app/railway.schema.json",
"build": {
"builder": "NIXPACKS"
},
"deploy": {
"startCommand": "npm start",
"restartPolicyType": "ON_FAILURE",
"restartPolicyMaxRetries": 10
}
}

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#!/usr/bin/env node
import { Server } from "@modelcontextprotocol/sdk/server/index.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import {
CallToolRequestSchema,
ListToolsRequestSchema,
} from "@modelcontextprotocol/sdk/types.js";
// ============================================
// CONFIGURATION
// ============================================
const MCP_NAME = "wave";
const MCP_VERSION = "1.0.0";
const API_BASE_URL = "https://gql.waveapps.com/graphql/public";
// ============================================
// GRAPHQL CLIENT
// ============================================
class WaveClient {
private apiToken: string;
constructor(apiToken: string) {
this.apiToken = apiToken;
}
async query(query: string, variables: Record<string, any> = {}) {
const response = await fetch(API_BASE_URL, {
method: "POST",
headers: {
"Authorization": `Bearer ${this.apiToken}`,
"Content-Type": "application/json",
},
body: JSON.stringify({ query, variables }),
});
if (!response.ok) {
throw new Error(`Wave API error: ${response.status} ${response.statusText}`);
}
const result = await response.json();
if (result.errors) {
throw new Error(`GraphQL error: ${JSON.stringify(result.errors)}`);
}
return result.data;
}
}
// ============================================
// GRAPHQL QUERIES AND MUTATIONS
// ============================================
const QUERIES = {
listBusinesses: `
query ListBusinesses {
businesses(page: 1, pageSize: 100) {
edges {
node {
id
name
isPersonal
currency {
code
}
}
}
}
}
`,
listInvoices: `
query ListInvoices($businessId: ID!, $page: Int, $pageSize: Int) {
business(id: $businessId) {
invoices(page: $page, pageSize: $pageSize) {
edges {
node {
id
invoiceNumber
invoiceDate
dueDate
status
customer {
id
name
}
amountDue {
value
currency {
code
}
}
amountPaid {
value
currency {
code
}
}
total {
value
currency {
code
}
}
}
}
pageInfo {
currentPage
totalPages
totalCount
}
}
}
}
`,
listCustomers: `
query ListCustomers($businessId: ID!, $page: Int, $pageSize: Int) {
business(id: $businessId) {
customers(page: $page, pageSize: $pageSize) {
edges {
node {
id
name
email
address {
addressLine1
addressLine2
city
provinceCode
postalCode
countryCode
}
currency {
code
}
}
}
pageInfo {
currentPage
totalPages
totalCount
}
}
}
}
`,
listAccounts: `
query ListAccounts($businessId: ID!, $page: Int, $pageSize: Int) {
business(id: $businessId) {
accounts(page: $page, pageSize: $pageSize) {
edges {
node {
id
name
description
displayId
type {
name
value
}
subtype {
name
value
}
normalBalanceType
isArchived
}
}
pageInfo {
currentPage
totalPages
totalCount
}
}
}
}
`,
listTransactions: `
query ListTransactions($businessId: ID!, $page: Int, $pageSize: Int) {
business(id: $businessId) {
transactions(page: $page, pageSize: $pageSize) {
edges {
node {
id
date
description
account {
id
name
}
amount {
value
currency {
code
}
}
anchor {
__typename
}
}
}
pageInfo {
currentPage
totalPages
totalCount
}
}
}
}
`,
};
const MUTATIONS = {
createInvoice: `
mutation CreateInvoice($input: InvoiceCreateInput!) {
invoiceCreate(input: $input) {
didSucceed
inputErrors {
code
message
path
}
invoice {
id
invoiceNumber
invoiceDate
dueDate
status
}
}
}
`,
createCustomer: `
mutation CreateCustomer($input: CustomerCreateInput!) {
customerCreate(input: $input) {
didSucceed
inputErrors {
code
message
path
}
customer {
id
name
email
}
}
}
`,
createExpense: `
mutation CreateExpense($input: MoneyTransactionCreateInput!) {
moneyTransactionCreate(input: $input) {
didSucceed
inputErrors {
code
message
path
}
transaction {
id
}
}
}
`,
};
// ============================================
// TOOL DEFINITIONS
// ============================================
const tools = [
{
name: "list_businesses",
description: "List all businesses in the Wave account",
inputSchema: {
type: "object" as const,
properties: {},
},
},
{
name: "list_invoices",
description: "List invoices for a business",
inputSchema: {
type: "object" as const,
properties: {
businessId: { type: "string", description: "Business ID" },
page: { type: "number", description: "Page number (default 1)" },
pageSize: { type: "number", description: "Items per page (default 25)" },
},
required: ["businessId"],
},
},
{
name: "create_invoice",
description: "Create a new invoice",
inputSchema: {
type: "object" as const,
properties: {
businessId: { type: "string", description: "Business ID" },
customerId: { type: "string", description: "Customer ID" },
invoiceDate: { type: "string", description: "Invoice date (YYYY-MM-DD)" },
dueDate: { type: "string", description: "Due date (YYYY-MM-DD)" },
items: {
type: "array",
description: "Invoice line items",
items: {
type: "object",
properties: {
productId: { type: "string", description: "Product/Service ID" },
description: { type: "string", description: "Line item description" },
quantity: { type: "number", description: "Quantity" },
unitPrice: { type: "number", description: "Unit price" },
},
},
},
memo: { type: "string", description: "Invoice memo/notes" },
},
required: ["businessId", "customerId", "items"],
},
},
{
name: "list_customers",
description: "List customers for a business",
inputSchema: {
type: "object" as const,
properties: {
businessId: { type: "string", description: "Business ID" },
page: { type: "number", description: "Page number (default 1)" },
pageSize: { type: "number", description: "Items per page (default 25)" },
},
required: ["businessId"],
},
},
{
name: "create_customer",
description: "Create a new customer",
inputSchema: {
type: "object" as const,
properties: {
businessId: { type: "string", description: "Business ID" },
name: { type: "string", description: "Customer name" },
email: { type: "string", description: "Customer email" },
firstName: { type: "string", description: "First name" },
lastName: { type: "string", description: "Last name" },
phone: { type: "string", description: "Phone number" },
addressLine1: { type: "string", description: "Street address line 1" },
addressLine2: { type: "string", description: "Street address line 2" },
city: { type: "string", description: "City" },
provinceCode: { type: "string", description: "State/Province code" },
postalCode: { type: "string", description: "Postal/ZIP code" },
countryCode: { type: "string", description: "Country code (e.g., US, CA)" },
currency: { type: "string", description: "Currency code (e.g., USD, CAD)" },
},
required: ["businessId", "name"],
},
},
{
name: "list_accounts",
description: "List chart of accounts for a business",
inputSchema: {
type: "object" as const,
properties: {
businessId: { type: "string", description: "Business ID" },
page: { type: "number", description: "Page number (default 1)" },
pageSize: { type: "number", description: "Items per page (default 25)" },
},
required: ["businessId"],
},
},
{
name: "list_transactions",
description: "List transactions for a business",
inputSchema: {
type: "object" as const,
properties: {
businessId: { type: "string", description: "Business ID" },
page: { type: "number", description: "Page number (default 1)" },
pageSize: { type: "number", description: "Items per page (default 25)" },
},
required: ["businessId"],
},
},
{
name: "create_expense",
description: "Create a new expense/money transaction",
inputSchema: {
type: "object" as const,
properties: {
businessId: { type: "string", description: "Business ID" },
externalId: { type: "string", description: "External reference ID" },
date: { type: "string", description: "Transaction date (YYYY-MM-DD)" },
description: { type: "string", description: "Transaction description" },
anchor: {
type: "object",
description: "Anchor account details",
properties: {
accountId: { type: "string", description: "Bank/payment account ID" },
amount: { type: "number", description: "Amount (positive value)" },
direction: { type: "string", description: "WITHDRAWAL or DEPOSIT" },
},
},
lineItems: {
type: "array",
description: "Expense line items",
items: {
type: "object",
properties: {
accountId: { type: "string", description: "Expense account ID" },
amount: { type: "number", description: "Amount" },
description: { type: "string", description: "Line item description" },
},
},
},
},
required: ["businessId", "date", "description", "anchor", "lineItems"],
},
},
];
// ============================================
// TOOL HANDLERS
// ============================================
async function handleTool(client: WaveClient, name: string, args: any) {
switch (name) {
case "list_businesses": {
return await client.query(QUERIES.listBusinesses);
}
case "list_invoices": {
const { businessId, page = 1, pageSize = 25 } = args;
return await client.query(QUERIES.listInvoices, { businessId, page, pageSize });
}
case "create_invoice": {
const { businessId, customerId, invoiceDate, dueDate, items, memo } = args;
const today = new Date().toISOString().split('T')[0];
const input: any = {
businessId,
customerId,
invoiceDate: invoiceDate || today,
items: items.map((item: any) => ({
productId: item.productId,
description: item.description,
quantity: item.quantity || 1,
unitPrice: item.unitPrice,
})),
};
if (dueDate) input.dueDate = dueDate;
if (memo) input.memo = memo;
return await client.query(MUTATIONS.createInvoice, { input });
}
case "list_customers": {
const { businessId, page = 1, pageSize = 25 } = args;
return await client.query(QUERIES.listCustomers, { businessId, page, pageSize });
}
case "create_customer": {
const { businessId, name, email, firstName, lastName, phone, addressLine1, addressLine2, city, provinceCode, postalCode, countryCode, currency } = args;
const input: any = { businessId, name };
if (email) input.email = email;
if (firstName) input.firstName = firstName;
if (lastName) input.lastName = lastName;
if (phone) input.phone = phone;
if (currency) input.currency = currency;
if (addressLine1) {
input.address = { addressLine1 };
if (addressLine2) input.address.addressLine2 = addressLine2;
if (city) input.address.city = city;
if (provinceCode) input.address.provinceCode = provinceCode;
if (postalCode) input.address.postalCode = postalCode;
if (countryCode) input.address.countryCode = countryCode;
}
return await client.query(MUTATIONS.createCustomer, { input });
}
case "list_accounts": {
const { businessId, page = 1, pageSize = 25 } = args;
return await client.query(QUERIES.listAccounts, { businessId, page, pageSize });
}
case "list_transactions": {
const { businessId, page = 1, pageSize = 25 } = args;
return await client.query(QUERIES.listTransactions, { businessId, page, pageSize });
}
case "create_expense": {
const { businessId, externalId, date, description, anchor, lineItems } = args;
const input: any = {
businessId,
externalId: externalId || `exp-${Date.now()}`,
date,
description,
anchor: {
accountId: anchor.accountId,
amount: anchor.amount,
direction: anchor.direction || "WITHDRAWAL",
},
lineItems: lineItems.map((item: any) => ({
accountId: item.accountId,
amount: item.amount,
description: item.description,
})),
};
return await client.query(MUTATIONS.createExpense, { input });
}
default:
throw new Error(`Unknown tool: ${name}`);
}
}
// ============================================
// SERVER SETUP
// ============================================
async function main() {
const apiToken = process.env.WAVE_API_TOKEN;
if (!apiToken) {
console.error("Error: WAVE_API_TOKEN environment variable required");
console.error("Get your API token at https://developer.waveapps.com");
process.exit(1);
}
const client = new WaveClient(apiToken);
const server = new Server(
{ name: `${MCP_NAME}-mcp`, version: MCP_VERSION },
{ capabilities: { tools: {} } }
);
server.setRequestHandler(ListToolsRequestSchema, async () => ({
tools,
}));
server.setRequestHandler(CallToolRequestSchema, async (request) => {
const { name, arguments: args } = request.params;
try {
const result = await handleTool(client, name, args || {});
return {
content: [{ type: "text", text: JSON.stringify(result, null, 2) }],
};
} catch (error) {
const message = error instanceof Error ? error.message : String(error);
return {
content: [{ type: "text", text: `Error: ${message}` }],
isError: true,
};
}
});
const transport = new StdioServerTransport();
await server.connect(transport);
console.error(`${MCP_NAME} MCP server running on stdio`);
}
main().catch(console.error);

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{
"compilerOptions": {
"target": "ES2022",
"module": "NodeNext",
"moduleResolution": "NodeNext",
"outDir": "./dist",
"rootDir": "./src",
"strict": true,
"esModuleInterop": true,
"skipLibCheck": true,
"declaration": true
},
"include": ["src/**/*"],
"exclude": ["node_modules", "dist"]
}