Lob MCP Server for Google ADK 21 tools — connect in under 2 minutes
Google Agent Development Kit (ADK) is Google's framework for building production AI agents. Add Lob as an MCP tool provider through the Vinkius and your ADK agents can call every tool with full schema introspection.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
from google.adk.agents import Agent
from google.adk.tools.mcp_tool import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import (
StreamableHTTPConnectionParams,
)
# Your Vinkius token — get it at cloud.vinkius.com
mcp_tools = McpToolset(
connection_params=StreamableHTTPConnectionParams(
url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
)
)
agent = Agent(
model="gemini-2.5-pro",
name="lob_agent",
instruction=(
"You help users interact with Lob "
"using 21 available tools."
),
tools=[mcp_tools],
)
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About Lob MCP Server
Lob MCP Server enables AI agents to send physical mail directly from your applications. Create and mail letters, postcards, and checks programmatically through Lob's print and mail API. Verify US and international addresses, autocomplete partial addresses, and manage your address book. Build reusable HTML templates for personalized mailings. Perfect for automating vendor payments, customer communications, marketing campaigns, payroll checks, and direct mail operations. All mail is printed, processed, and delivered within 24 hours via USPS integration.
Google ADK natively supports Lob as an MCP tool provider — declare the Vinkius Edge URL and the framework handles discovery, validation, and execution automatically. Combine 21 tools with Gemini's long-context reasoning for complex multi-tool workflows, with production-ready session management and evaluation built in.
The Lob MCP Server exposes 21 tools through the Vinkius. Connect it to Google ADK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect Lob to Google ADK via MCP
Follow these steps to integrate the Lob MCP Server with Google ADK.
Install Google ADK
Run pip install google-adk
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Create the agent
Save the code above and integrate into your ADK workflow
Explore tools
The agent will discover 21 tools from Lob via MCP
Why Use Google ADK with the Lob MCP Server
Google ADK provides unique advantages when paired with Lob through the Model Context Protocol.
Google ADK natively supports MCP tool servers — declare a tool provider and the framework handles discovery, validation, and execution
Built on Gemini models, ADK provides long-context reasoning ideal for complex multi-tool workflows with Lob
Production-ready features like session management, evaluation, and deployment come built-in — not bolted on
Seamless integration with Google Cloud services means you can combine Lob tools with BigQuery, Vertex AI, and Cloud Functions
Lob + Google ADK Use Cases
Practical scenarios where Google ADK combined with the Lob MCP Server delivers measurable value.
Enterprise data agents: ADK agents query Lob and cross-reference results with internal databases for comprehensive analysis
Multi-modal workflows: combine Lob tool responses with Gemini's vision and language capabilities in a single agent
Automated compliance checks: schedule ADK agents to query Lob regularly and flag policy violations or configuration drift
Internal tool platforms: build self-service agent platforms where teams connect their own MCP servers including Lob
Lob MCP Tools for Google ADK (21)
These 21 tools become available when you connect Lob to Google ADK via MCP:
autocomplete_us_address
Autocomplete a partial US address
cancel_letter
Only works if status is still "processing". Cancel a letter before it enters production
create_address
Requires name and address_line1. Create a new address in your Lob address book
create_bank_account
Requires description, routing_number, account_number, account_type (company/individual), and signatory. Add a bank account for sending checks
create_check
Requires recipient (to), bank account ID, and amount. Optional: memo, logo, description. Create and mail a physical check through Lob
create_letter
Requires recipient (to), sender (from), and file content. Supports HTML templates with merge variables, color options, and mail type selection. Create and mail a physical letter through Lob
create_postcard
Requires recipient (to) and front design. Optional: back design, message, merge variables. Create and mail a physical postcard through Lob
create_template
Create a reusable HTML template for mailings
delete_address
Delete an address from your Lob address book
get_address
Get details of a specific address
get_check
Get details of a specific check by ID
get_letter
Get details of a specific letter by ID
get_postcard
Get details of a specific postcard by ID
get_template
Get details of a specific template
list_addresses
Use optional limit to control result count. List addresses in your Lob address book
list_bank_accounts
Use optional limit to control result count. List bank accounts in your Lob account
list_checks
Track payments, audit disbursements. List physical checks sent through Lob
list_letters
Each letter includes status, tracking number, and expected delivery date. Use optional limit to control result count. List physical letters sent through Lob. Track mailings, check delivery status, and review letter history
list_postcards
Use optional limit to control result count. List physical postcards sent through Lob
list_templates
List HTML templates for mailings
verify_us_address
Verify and standardize a US address
Example Prompts for Lob in Google ADK
Ready-to-use prompts you can give your Google ADK agent to start working with Lob immediately.
"Send a letter to John Doe at 123 Main St, New York, NY 10001 with our welcome package HTML template"
"Verify if this address is deliverable: 185 Berry St, San Francisco, CA 94107"
"Send a $500 check to ABC Consulting for consulting services rendered in March"
Troubleshooting Lob MCP Server with Google ADK
Common issues when connecting Lob to Google ADK through the Vinkius, and how to resolve them.
McpToolset not found
pip install --upgrade google-adkLob + Google ADK FAQ
Common questions about integrating Lob MCP Server with Google ADK.
How does Google ADK connect to MCP servers?
Can ADK agents use multiple MCP servers?
Which Gemini models work best with MCP tools?
Connect Lob with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect Lob to Google ADK
Get your token, paste the configuration, and start using 21 tools in under 2 minutes. No API key management needed.