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tempo-mcp

npm

MCP server for Tempo blockchain stablecoin payments — Enable AI agents to autonomously execute real-world payments.

Testnet Only — This MCP currently operates on Tempo testnet. No real funds are used. Perfect for experimentation and development!

TL;DR

Add to Claude Desktop config (~/.config/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "tempo": {
      "command": "npx",
      "args": ["tempo-mcp"],
      "env": { "TEMPO_PRIVATE_KEY": "0xYOUR_PRIVATE_KEY" }
    }
  }
}

Then ask Claude: "What's my AlphaUSD balance?"

Need testnet tokens? Get free AlphaUSD at docs.tempo.xyz/faucet

What Can I Ask?

You Say What Happens
"What's my balance?" Checks your AlphaUSD balance
"Send 100 AlphaUSD to 0x..." Sends a single payment
"Pay invoice INV-001 for $500 to 0x..." Payment with memo for reconciliation
"Process payroll from employees.csv" Batch payments to multiple recipients
"Send concurrent payments to 50 vendors" Parallel payments (10-100x faster than sequential)
"Swap 1000 AlphaUSD to BetaUSD" Exchange stablecoins on Tempo DEX
"Schedule payment of $200 to 0x... for tomorrow 9am" Future-dated payment
"Who has the ISSUER_ROLE on AlphaUSD?" Query token role members
"Grant PAUSE_ROLE to 0x..." Assign role to address (requires admin)
"Pause the AlphaUSD token" Emergency pause all transfers
"Create a whitelist policy" Create new TIP-403 compliance policy
"Is 0x... whitelisted in policy 1?" Check address compliance status
"Add 0x... to the whitelist" Whitelist address (requires policy owner)
"Can 0x... transfer to 0x...?" Pre-validate transfer compliance
"Send 100 AlphaUSD to 0x... with sponsored gas" Gasless payment (fee paid by sponsor)
"What's the sponsor's balance?" Check fee sponsor token balance
"Get access key info for 0x..." Query session key details and status
"Check remaining limit for access key 0x..." View spending allowance left
"Revoke access key 0x..." Permanently disable a session key
"What's my reward status for AlphaUSD?" Check opt-in status and pending rewards
"Opt into rewards for AlphaUSD" Start earning pro-rata token rewards
"Distribute 1000 AlphaUSD rewards" Distribute rewards to opted-in holders
"Claim my pending rewards" Claim accrued rewards to your wallet
"What's the Fee AMM pool info for AlphaUSD?" Check pool reserves and LP supply
"Add 1000 AlphaUSD liquidity to the Fee AMM" Provide liquidity to earn conversion fees
"What's my LP position in the Fee AMM?" View your share and underlying token value
"Show the AlphaUSD orderbook" View bid/ask levels on the DEX
"Place a limit buy for 100 AlphaUSD at tick -10" Create a resting order at $0.9999
"Place a flip order: buy at -10, flip to sell at 10" Auto-reversing market maker order
"What are my open orders?" List your active DEX orders
"Cancel order 12345" Cancel an open order and get refund

What is tempo-mcp?

tempo-mcp is a Model Context Protocol (MCP) server that bridges AI assistants with the Tempo blockchain, enabling autonomous stablecoin payments for agentic commerce.

Why This Matters

AI agents are evolving from assistants into autonomous actors that can take real-world actions. However, they currently lack the ability to handle financial transactions safely. tempo-mcp solves this by providing:

  • Autonomous Payments: AI agents can send stablecoin payments without human intervention
  • Built-in Safety: Spending limits, address allowlists, and rate limiting prevent runaway transactions
  • Audit Trail: Every transaction is logged for compliance and reconciliation
  • Memo Support: 32-byte memos enable invoice matching and payment reconciliation

Use Cases

  • Payroll Automation: Process batch payments from CSV files
  • Invoice Settlement: Match payments to invoices using memo fields
  • Treasury Management: Rebalance multi-token portfolios automatically
  • Micropayments: Enable pay-per-use AI services
  • Compliance Management: Automate KYC/AML whitelist maintenance and transfer validation
  • Delegated Agent Signing: Use access keys (session keys) for AI agents with spending limits
  • Fee Liquidity Provision: Earn yields by providing liquidity to the Fee AMM for gas conversions
  • Automated Market Making: Place flip orders that oscillate between buy/sell for stablecoin arbitrage

Features

Payment Operations

  • Single Payments — Send TIP-20 stablecoin transfers with optional memos
  • Batch Payments — Atomic multi-recipient transfers (up to 100 recipients)
  • Concurrent Payments — Parallel execution using nonceKeys (10-100x faster for large batches)
  • Scheduled Payments — Protocol-level future payments with execution windows
  • Sponsored Payments — Gasless transactions where a sponsor pays fees (local key or relay service)

Query Operations

  • Balance Queries — Check single or multiple token balances
  • Transaction Lookups — Get transaction details and history
  • Gas Estimation — Estimate transaction costs

Token Operations

  • Token Creation — Deploy new TIP-20 tokens via factory contract
  • Mint/Burn — Token supply management (requires ISSUER_ROLE)
  • Swap — Exchange stablecoins on Tempo's native DEX
  • Role Management — Grant, revoke, and query TIP-20 roles (admin, issuer, pause, unpause)
  • Pause Control — Emergency pause/unpause token transfers (requires PAUSE_ROLE/UNPAUSE_ROLE)
  • Policy Compliance — TIP-403 whitelist/blacklist management and pre-transfer validation
  • Rewards Management — TIP-20 opt-in rewards: opt-in/out, claim rewards, set recipient, view status
  • Fee AMM Liquidity — Provide liquidity to the gas fee conversion pool and earn from stablecoin swaps
  • DEX Advanced Orders — Limit orders, flip orders (auto-reversing), orderbook queries, and order management

Security

  • Spending Limits — Per-token and daily USD limits
  • Address Allowlist — Whitelist or blocklist recipient addresses
  • Rate Limiting — Configurable limits per operation type
  • Audit Logging — Structured JSON logs with request tracing
  • Access Keys (Session Keys) — Delegated signing with per-token spending limits and expiration

Wallet Support

  • Private Key — Direct key for development/testing
  • Keystore — Encrypted JSON keystore for production
  • External Signers — Turnkey/Fireblocks integration for enterprise

Quick Start

Prerequisites

  • Node.js 20.0.0 or higher
  • npm, pnpm, or yarn
  • A Tempo testnet wallet with AlphaUSD tokens

First time? Get a wallet and free testnet tokens at docs.tempo.xyz/faucet

Installation

Via npm (global install):

npm install -g tempo-mcp

Via npx (no installation):

npx tempo-mcp

From source:

git clone https://github.com/arome3/tempo-mcp
cd tempo-mcp
npm install
npm run build

Configuration

  1. Create a .env file:
cp .env.example .env
  1. Add your wallet private key:
# Required
TEMPO_PRIVATE_KEY=0x...  # Your wallet private key

# Network (defaults to testnet)
TEMPO_RPC_URL=https://rpc.testnet.tempo.xyz
TEMPO_CHAIN_ID=42429
  1. Run the server:
npm start
# or
npx tempo-mcp

Installation with your IDE

Select your MCP client below for detailed setup instructions.

Note: If you're using a client not listed here, you can still use tempo-mcp by manually adding the server configuration to your client's MCP settings.

Claude Desktop

Download and install Claude Desktop if you haven't already.

Manual Setup:

  1. Open Claude Desktop
  2. Go to Settings (gear icon) → Developer
  3. Click Edit Config to open the configuration file
    • macOS/Linux: ~/.config/Claude/claude_desktop_config.json
    • Windows: %APPDATA%\Claude\claude_desktop_config.json
  4. Add the following configuration:
{
  "mcpServers": {
    "tempo": {
      "command": "npx",
      "args": ["tempo-mcp"],
      "env": {
        "TEMPO_PRIVATE_KEY": "0x...",
        "TEMPO_RPC_URL": "https://rpc.testnet.tempo.xyz"
      }
    }
  }
}
  1. Save the file and restart Claude Desktop

Claude Code (CLI)

Install Claude Code if you haven't already.

1-Click Setup:

claude mcp add tempo-mcp -e TEMPO_PRIVATE_KEY=0x... -- npx tempo-mcp

Manual Setup:

  1. Open your terminal
  2. Run claude mcp add tempo-mcp to add the server
  3. Or edit the config file directly:
    • macOS: ~/.claude/settings.json
    • Linux: ~/.claude/settings.json
    • Windows: %USERPROFILE%\.claude\settings.json
  4. Add the configuration:
{
  "mcpServers": {
    "tempo": {
      "command": "npx",
      "args": ["tempo-mcp"],
      "env": {
        "TEMPO_PRIVATE_KEY": "0x..."
      }
    }
  }
}
  1. Verify with /mcp command inside Claude Code

Cursor

Download and install Cursor if you haven't already.

Manual Setup:

  1. Open a project in Cursor and navigate to Cursor Settings (⌘+Shift+J on macOS)
  2. In the settings menu, go to the MCP section
  3. Click New MCP Server. This will open your mcp.json configuration file
    • Global: ~/.cursor/mcp.json
    • Project-level: .cursor/mcp.json (in project root)
  4. Add the following configuration:
{
  "mcpServers": {
    "tempo": {
      "command": "npx",
      "args": ["tempo-mcp"],
      "env": {
        "TEMPO_PRIVATE_KEY": "0x..."
      }
    }
  }
}
  1. Save and restart Cursor

Tip: Project-level configs (.cursor/mcp.json) override global configs.

Windsurf

Download and install Windsurf if you haven't already.

Manual Setup:

  1. Open Windsurf and go to Settings (⌘+, on macOS)
  2. Navigate to Cascade → Plugins
  3. Click View raw config to open the MCP configuration file
    • macOS: ~/.codeium/windsurf/mcp_config.json
    • Linux: ~/.config/.codeium/windsurf/mcp_config.json
    • Windows: %USERPROFILE%\.codeium\windsurf\mcp_config.json
  4. Add the following configuration:
{
  "mcpServers": {
    "tempo": {
      "command": "npx",
      "args": ["tempo-mcp"],
      "env": {
        "TEMPO_PRIVATE_KEY": "0x..."
      }
    }
  }
}
  1. Save and restart Windsurf

VS Code + Continue

Install the Continue extension in VS Code.

Manual Setup:

  1. Open VS Code and click the Continue icon in the sidebar
  2. Click the gear icon → Open config.yaml
    • macOS: ~/.continue/config.yaml
    • Linux: ~/.continue/config.yaml
    • Windows: %USERPROFILE%\.continue\config.yaml
  3. Add the following configuration (YAML format):
mcpServers:
  - name: tempo
    command: npx
    args:
      - tempo-mcp
    env:
      TEMPO_PRIVATE_KEY: "0x..."
  1. Save and reload VS Code

Note: MCP tools are only available in Continue's Agent mode.

Cline

Install the Cline extension in VS Code.

Manual Setup:

  1. Open VS Code and click the Cline icon in the sidebar
  2. Click the MCP Servers icon in the top navigation bar
  3. Select the Configure tab, then click Advanced MCP Settings
  4. This opens the config file at:
    • macOS: ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
    • Windows: %APPDATA%\Code\User\globalStorage\saoudrizwan.claude-dev\settings\cline_mcp_settings.json
    • Linux: ~/.config/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
  5. Add the following configuration:
{
  "mcpServers": {
    "tempo": {
      "command": "npx",
      "args": ["tempo-mcp"],
      "env": {
        "TEMPO_PRIVATE_KEY": "0x..."
      },
      "alwaysAllow": [],
      "disabled": false
    }
  }
}
  1. Save and the server will be available immediately

Generic MCP Client

For custom MCP clients or programmatic usage:

import { Client } from "@modelcontextprotocol/sdk/client/index.js";
import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js";

const transport = new StdioClientTransport({
  command: "npx",
  args: ["tempo-mcp"],
  env: {
    TEMPO_PRIVATE_KEY: process.env.TEMPO_PRIVATE_KEY,
  },
});

const client = new Client({ name: "my-agent", version: "1.0.0" }, {});
await client.connect(transport);

// Now you can call tools
const result = await client.callTool({
  name: "get_balance",
  arguments: { token: "AlphaUSD" },
});

MCP Tools Reference

Payment Tools (High Risk)

Tool Description Key Parameters
send_payment Send a single TIP-20 token transfer token, to, amount, memo?
batch_payments Atomic multi-recipient transfer token, payments[] (max 100)
schedule_payment Create a scheduled future payment token, to, amount, executeAt
cancel_scheduled_payment Cancel a pending scheduled payment transactionHash
send_sponsored_payment Gasless payment (sponsor pays fees) token, to, amount, useRelay?
estimate_sponsored_gas Estimate gas for sponsored tx token, to, amount, feeToken?
get_sponsor_balance Check sponsor's token balance sponsor?, token?
send_concurrent_payments Parallel payments using nonceKeys (10-100x faster) payments[], startNonceKey?
get_nonce_for_key Get nonce for a specific nonceKey nonceKey, address?
list_active_nonce_keys List all nonceKeys with nonce > 0 address?

Query Tools (Low Risk)

Tool Description Key Parameters
get_balance Get token balance for an address token, address?
get_balances Get multiple token balances tokens[], address?
get_account_info Get account details (type, tx count) address
get_transaction Get transaction by hash hash
get_gas_estimate Estimate gas for a transaction to, amount, token

Token Tools (High Risk)

Tool Description Key Parameters
create_token Deploy a new TIP-20 token name, symbol, decimals, initialSupply
get_token_info Get token metadata token
mint_tokens Mint tokens (requires role) token, to, amount
burn_tokens Burn tokens (requires role) token, amount
grant_role Grant a role to an address token, role, account
revoke_role Revoke a role from an address token, role, account
renounce_role Renounce your own role token, role
has_role Check if address has role token, role, account
get_role_members List all members of a role token, role
pause_token Pause all token transfers token, reason?
unpause_token Resume token transfers token, reason?

Policy Tools (TIP-403 Compliance)

Tool Description Key Parameters
create_policy Create a new compliance policy policyType, admin?, initialAccounts?
check_transfer_compliance Pre-validate if transfer is allowed token, from, to
get_policy_info Get policy details policyId
is_whitelisted Check if address is whitelisted policyId, account
is_blacklisted Check if address is blacklisted policyId, account
add_to_whitelist Add address to whitelist policyId, account
remove_from_whitelist Remove from whitelist policyId, account
add_to_blacklist Block an address policyId, account
remove_from_blacklist Unblock an address policyId, account
burn_blocked_tokens Burn tokens from blocked address token, blockedAddress, amount

Policy Types: whitelist (only approved addresses can transact) or blacklist (block specific addresses). Built-in policies: 0 (always reject), 1 (always allow). Custom policies start at ID 2.

Access Key Tools (Session Keys)

Tool Description Key Parameters
get_access_key_info Get access key details (type, expiry, limits) accountAddress, keyId
get_remaining_limit Check remaining spending allowance accountAddress, keyId, token
revoke_access_key Permanently disable an access key keyId
update_spending_limit Modify token spending limit for a key keyId, token, newLimit

Rewards Tools (TIP-20 Rewards)

Tool Description Key Parameters
opt_in_rewards Opt into token rewards program token
opt_out_rewards Opt out of rewards (optionally claim pending) token, claimPending?
claim_rewards Claim pending rewards token
distribute_rewards Distribute rewards to opted-in holders (issuer) token, amount, duration?
get_pending_rewards Check pending reward amount token, address?
set_reward_recipient Set auto-forward address for rewards token, recipient
get_reward_status Get full reward status and token stats token, address?

Duration: Set duration=0 for instant distribution. Time-based streaming rewards (duration > 0) are planned for future protocol updates.

Exchange Tools

Tool Description Key Parameters
get_swap_quote Get DEX quote for swap fromToken, toToken, amount
swap_stablecoins Execute stablecoin swap fromToken, toToken, amount, slippage?

Fee AMM Tools (Liquidity Management)

Tool Description Key Parameters
get_fee_pool_info Get pool reserves, LP supply, and swap rate userToken, validatorToken?
get_lp_position Check LP balance and underlying token value userToken, validatorToken?, address?
estimate_fee_swap Quote output for fee token conversion fromToken, toToken, amount
add_fee_liquidity Add liquidity to earn conversion fees userToken, amountUser, amountValidator
remove_fee_liquidity Withdraw liquidity and LP tokens userToken, lpAmount

DEX Advanced Tools (Orderbook Trading)

Tool Description Key Parameters
place_limit_order Place a resting limit order on the orderbook token, amount, side, tick
place_flip_order Place auto-reversing order for market making token, amount, side, tick, flipTick
cancel_order Cancel open order and refund tokens orderId
get_orderbook View bid/ask levels and spread baseToken, quoteToken?, depth?
get_my_orders List your open/filled/cancelled orders token?, status?
get_order_status Get order details and fill percentage orderId

Tick Pricing: Price = 1 + tick/100,000. Tick 0 = $1.0000, tick -10 = $0.9999, tick 10 = $1.0001

MCP Resources Reference

Resources provide read-only access to blockchain data via URI patterns:

URI Pattern Description
tempo://network Network configuration and current block
tempo://account/{address} Account info and token balances
tempo://token/{address} TIP-20 token metadata
tempo://token/{address}/roles Token role assignments and pause status
tempo://token/{address}/rewards Token rewards status (opt-in, pending, stats)
tempo://tx/{hash} Transaction details
tempo://block/{number|"latest"} Block information
tempo://policy/{id} TIP-403 policy details (type, owner, token count)
tempo://policy/{id}/whitelist/{address} Check if address is whitelisted
tempo://policy/{id}/blacklist/{address} Check if address is blacklisted
tempo://access-key/{account}/{keyId} Access key info (type, expiry, revoked status)
tempo://access-key/{account}/{keyId}/limit/{token} Remaining spending limit for token
tempo://fee-amm/{userToken}/{validatorToken} Fee AMM pool info (reserves, LP supply, swap rate)
tempo://dex/orderbook/{baseToken} DEX orderbook with bid/ask levels
tempo://dex/order/{orderId} Order details and fill status

Example Usage:

Read tempo://account/0x742d35Cc6634C0532925a3b844Bc9e7595f0bEbb

MCP Prompts Reference

Prompts provide reusable conversation templates:

Prompt Description Parameters
payment-receipt Generate formatted payment receipt transactionHash
reconciliation-report Match transactions to invoices startDate, endDate, memoPrefix?
payroll-summary Summarize batch payment results batchTransactionHash
spending-report Analyze spending by recipient period, groupBy?
role-audit Audit token role assignments token
compliance-report Generate TIP-403 compliance status report addresses, policyId?, token?
rewards-summary Summarize rewards status and pending claims token, address?
fee-amm-summary Summarize Fee AMM pool status and LP position userToken, address?

Configuration

Environment Variables

Variable Description Default
Network
TEMPO_RPC_URL RPC endpoint URL https://rpc.testnet.tempo.xyz
TEMPO_CHAIN_ID Chain ID 42429
TEMPO_EXPLORER_URL Block explorer URL https://explore.tempo.xyz
Wallet
TEMPO_PRIVATE_KEY Wallet private key (0x-prefixed) —
TEMPO_KEYSTORE_PATH Path to encrypted keystore —
TEMPO_KEYSTORE_PASSWORD Keystore decryption password —
Security
TEMPO_MAX_SINGLE_PAYMENT Max single payment amount 1000
TEMPO_DAILY_LIMIT Daily spending limit 10000
TEMPO_ALLOWLIST_ENABLED Enable address restrictions false
TEMPO_RATE_LIMIT Max tool calls per minute 60
Logging
TEMPO_LOG_LEVEL Log level (debug/info/warn/error) info
TEMPO_AUDIT_LOG_ENABLED Enable audit logging true
TEMPO_AUDIT_LOG_PATH Audit log file path ./logs/audit.jsonl
Fee Sponsorship
TEMPO_FEE_SPONSORSHIP_ENABLED Enable gasless transactions false
TEMPO_FEE_PAYER_TYPE Sponsor mode (local or relay) local
TEMPO_FEE_PAYER_ADDRESS Fee payer wallet address —
TEMPO_FEE_PAYER_KEY Fee payer private key (local mode) —
TEMPO_FEE_RELAY_URL Relay service URL https://sponsor.testnet.tempo.xyz
Tokens
TEMPO_DEFAULT_TOKEN Default payment token AlphaUSD

Configuration File

Create tempo-mcp.config.yaml for advanced configuration:

network:
  rpcUrl: https://rpc.testnet.tempo.xyz
  chainId: 42429
  explorerUrl: https://explore.tempo.xyz

wallet:
  type: privateKey  # or 'keystore', 'external'

security:
  spendingLimits:
    maxSinglePayment:
      "*": "1000"           # Default for all tokens
      AlphaUSD: "5000"      # Override for specific token
    dailyLimit:
      "*": "10000"
    dailyTotalUSD: "50000"
    maxBatchSize: 50
    maxBatchTotalUSD: "25000"

  addressAllowlist:
    enabled: true
    mode: allowlist         # or 'blocklist'
    addresses:
      - "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEbb"
    labels:
      "0x742d35Cc...": "Payroll Account"

  rateLimits:
    toolCalls:
      windowMs: 60000
      maxCalls: 60
    highRiskOps:
      windowMs: 3600000
      maxCalls: 100

logging:
  level: info
  auditLog:
    enabled: true
    path: ./logs/audit.jsonl
    rotationDays: 30

feeSponsorship:
  enabled: true
  feePayer:
    type: local              # or 'relay' for testnet relay service
    address: "0x..."         # Fee payer wallet address
    privateKey: "0x..."      # Fee payer private key (local mode only)
    relayUrl: "https://sponsor.testnet.tempo.xyz"  # Relay endpoint
  maxSponsoredPerDay: "1000" # Daily sponsorship limit

Configuration Priority

  1. Environment variables (highest priority)
  2. Config file (tempo-mcp.config.yaml/yml/json)
  3. Default values (lowest priority)

Security

tempo-mcp includes multiple security layers to protect against unauthorized transactions:

Spending Limits

Prevent large or excessive payments:

security:
  spendingLimits:
    maxSinglePayment:
      "*": "1000"           # Max $1000 per transaction
    dailyLimit:
      "*": "10000"          # Max $10,000 per day per token
    dailyTotalUSD: "50000"  # Max $50,000 per day total

Address Allowlist

Restrict which addresses can receive payments:

security:
  addressAllowlist:
    enabled: true
    mode: allowlist         # Only allow listed addresses
    addresses:
      - "0x..."             # Approved recipient
    labels:
      "0x...": "Vendor A"   # Human-readable label

Rate Limiting

Prevent abuse and runaway agents:

security:
  rateLimits:
    toolCalls:
      windowMs: 60000       # 1 minute window
      maxCalls: 60          # Max 60 calls per minute
    highRiskOps:
      windowMs: 3600000     # 1 hour window
      maxCalls: 100         # Max 100 high-risk ops per hour

Audit Logging

All operations are logged for compliance:

{"timestamp":"2024-12-17T10:30:00Z","requestId":"abc123","tool":"send_payment","status":"success","tx":"0x...","amount":"100","to":"0x..."}

Examples

Basic Payment

User: "Send 50 AlphaUSD to 0x742d35Cc6634C0532925a3b844Bc9e7595f0bEbb"

→ Claude calls send_payment({
    token: "AlphaUSD",
    to: "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEbb",
    amount: "50"
  })

→ Returns: {
    success: true,
    transactionHash: "0xabc123...",
    explorerUrl: "https://explore.tempo.xyz/tx/0xabc123..."
  }

Payment with Memo (Invoice Reconciliation)

User: "Pay invoice #INV-2024-001 for 1500 AlphaUSD to 0x..."

→ Claude calls send_payment({
    token: "AlphaUSD",
    to: "0x...",
    amount: "1500",
    memo: "INV-2024-001"
  })

Batch Payroll

User: "Process this month's payroll from employees.csv"

→ Claude calls batch_payments({
    token: "AlphaUSD",
    payments: [
      { to: "0x...", amount: "5000", label: "Alice" },
      { to: "0x...", amount: "4500", label: "Bob" },
      { to: "0x...", amount: "6000", label: "Carol" }
    ]
  })

Sponsored (Gasless) Payment

User: "Send 100 AlphaUSD to 0x... using sponsored gas"

→ Claude calls send_sponsored_payment({
    token: "AlphaUSD",
    to: "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEbb",
    amount: "100",
    useRelay: false  // Use local fee payer
  })

→ Returns: {
    success: true,
    transactionHash: "0xdef456...",
    feePayer: "0xabc...",
    feeAmount: "0.000073"
  }

Example Agents

Explore complete agent implementations in the /examples directory:

Example Description
Basic Usage Simple balance checks and payments
Payroll Agent CSV-based batch payroll processing
Invoice Agent AP automation with memo reconciliation
Treasury Agent Multi-token portfolio management
Compliance Agent TIP-403 whitelist/blacklist management
Market Maker Agent DEX orderbook trading with flip orders

Development

Setup

git clone https://github.com/arome3/tempo-mcp
cd tempo-mcp
npm install

Available Scripts

Script Description
npm run dev Start with hot reload (tsx watch)
npm run build Build TypeScript to dist/
npm start Run compiled server
npm test Run tests in watch mode
npm run test:run Run tests once (CI mode)
npm run lint Run ESLint
npm run format Format with Prettier
npm run typecheck TypeScript type checking

Testing

# Run all tests
npm test

# Run with coverage
npm run test:run -- --coverage

# Run specific test file
npm test -- src/security/spending-limits.test.ts

Network Information

Tempo Testnet (Andantino)

Property Value
Chain ID 42429
RPC URL https://rpc.testnet.tempo.xyz
Explorer https://explore.tempo.xyz
Block Time ~0.6 seconds
Faucet docs.tempo.xyz/quickstart/faucet

Default Tokens

Token Address
AlphaUSD 0x20c0000000000000000000000000000000000001

Documentation

Tech Stack

Category Technology
Language TypeScript 5.7
Runtime Node.js 20+
Protocol MCP SDK 1.0
Blockchain viem 2.21, tempo.ts 0.10
Validation Zod 3.25
Logging Pino 8.21
Build tsup, tsx
Testing Vitest
Linting ESLint, Prettier

Troubleshooting

"Connection refused" error

  • Ensure Node.js 20+ is installed: node --version
  • Check that TEMPO_PRIVATE_KEY is set in your config

"Insufficient balance" error

  • Get testnet tokens from the faucet
  • Verify your balance: ask Claude "What's my balance?"

"Spending limit exceeded"

  • Increase TEMPO_MAX_SINGLE_PAYMENT in your environment or config file
  • Check TEMPO_DAILY_LIMIT if you've made many transactions today

"Token not found" error

  • Use token symbol (AlphaUSD) or full address (0x20c0...0001)
  • Check supported tokens in the Network Information section

Server not responding

  • Restart Claude Desktop after config changes
  • Check logs: tail -f ~/.config/Claude/logs/mcp*.log

License

MIT License — see LICENSE for details.

Acknowledgments

  • Tempo — The stablecoin payments blockchain
  • Anthropic — Model Context Protocol
  • viem — TypeScript Ethereum library

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Built by Abraham Onoja

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Built for the age of agentic commerce

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MCP server enabling AI agents to execute autonomous stablecoin payments on Tempo blockchain. Supports single/batch payments, scheduled transfers, token swaps, and balance queries with built-in spending limits, audit logging and many more

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mcp blockchain payments tempo ai-agents stablecoin model-context-protocol mcp-server

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