How do I find my Harmonic API Key?

Log in to your Harmonic account, go to the **Console**, and navigate to the **API** section. You will be able to generate and copy your unique apikey from there.

What happens if a company is not found in the database?

If a company is not found, Harmonic will return a `201 Enrichment Triggered` status. This means a background update has been queued. You can check the status later using the `get_enrichment_status` tool.

Can I search for companies based on specific criteria?

Yes! Use the `search_startups` tool. You can provide a JSON string with filters like headcount, location, or industry to find companies that match your investment or sales criteria.

Is the integration secure?

Absolutely. The integration only accesses your data through your unique API key. Your credentials are encrypted and stored securely within the Vinkius Cloud infrastructure.

Harmonic MCP Server for Google ADK 11 tools — connect in under 2 minutes

Name: Harmonic
Availability: InStock
Author: Vinkius

google.github.io/adk-docs/tools/mcp-tools

Built by Vinkius GDPR 11 Tools SDK

Google Agent Development Kit (ADK) is Google's framework for building production AI agents. Add Harmonic as an MCP tool provider through Vinkius and your ADK agents can call every tool with full schema introspection.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

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="harmonic_agent",
    instruction=(
        "You help users interact with Harmonic "
        "using 11 available tools."
    ),
    tools=[mcp_tools],
)

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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 Harmonic MCP Server

Connect your Harmonic.ai account to any AI agent and take full control of your startup discovery and investment research through natural conversation.

Google ADK natively supports Harmonic as an MCP tool provider. declare Vinkius Edge URL and the framework handles discovery, validation, and execution automatically. Combine 11 tools with Gemini's long-context reasoning for complex multi-tool workflows, with production-ready session management and evaluation built in.

What you can do

Company Enrichment — Instantly retrieve firmographics, funding history, and social traction signals for any domain.
Person Insights — Enrich professional profiles using LinkedIn URLs to get education and career history.
Startup Discovery — Search through over 35 million companies using advanced filters like headcount growth and industry.
Investor Research — Find investment firms and angels, and inspect their full portfolio history.
Funding Monitoring — List and retrieve details for funding rounds, including amounts and lead investors.
Enrichment Status — Track background data refresh requests to ensure you have the most up-to-date information.

The Harmonic MCP Server exposes 11 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 Harmonic to Google ADK via MCP

Follow these steps to integrate the Harmonic 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 11 tools from Harmonic via MCP

Why Use Google ADK with the Harmonic MCP Server

Google ADK provides unique advantages when paired with Harmonic 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 Harmonic

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 Harmonic tools with BigQuery, Vertex AI, and Cloud Functions

Harmonic + Google ADK Use Cases

Practical scenarios where Google ADK combined with the Harmonic MCP Server delivers measurable value.

Enterprise data agents: ADK agents query Harmonic and cross-reference results with internal databases for comprehensive analysis

Multi-modal workflows: combine Harmonic tool responses with Gemini's vision and language capabilities in a single agent

Automated compliance checks: schedule ADK agents to query Harmonic regularly and flag policy violations or configuration drift

Internal tool platforms: build self-service agent platforms where teams connect their own MCP servers including Harmonic

Harmonic MCP Tools for Google ADK (11)

These 11 tools become available when you connect Harmonic to Google ADK via MCP:

enrich_company

Enrich a company with firmographics, funding, and social signals

enrich_person

Enrich a person with professional history and social signals

get_api_profile

Get information about the current API user

get_company_stats

Get growth and headcount statistics for a company

get_enrichment_status

Check the status of a background enrichment request

get_investor_portfolio

Get the list of portfolio companies for an investor

list_company_news

List recent news and press releases for a company

list_funding_rounds

List funding rounds for a specific company

list_traction_signals

List social and web traction signals for a company

search_investors

Search for investment firms and angels

search_startups

Search for startups using filters like industry, location, and headcount

Example Prompts for Harmonic in Google ADK

Ready-to-use prompts you can give your Google ADK agent to start working with Harmonic immediately.

"Enrich the domain 'openai.com' and show funding rounds."

"Search for startups in 'Artificial Intelligence' with 50-200 employees."

"Show me the portfolio companies for 'Sequoia Capital'."

Troubleshooting Harmonic MCP Server with Google ADK

Common issues when connecting Harmonic to Google ADK through the Vinkius, and how to resolve them.

McpToolset not found

Update: pip install --upgrade google-adk

Harmonic + Google ADK FAQ

Common questions about integrating Harmonic MCP Server with Google ADK.

How does Google ADK connect to MCP servers?

Import the MCP toolset class and pass the server URL. ADK discovers and registers all tools automatically, making them available to your agent's tool-use loop.

Can ADK agents use multiple MCP servers?

Yes. Declare multiple MCP tool providers in your agent configuration. ADK merges all tool schemas and the agent can call tools from any server in a single turn.

Which Gemini models work best with MCP tools?

Gemini 2.0 Flash and Pro models both support function calling required for MCP tools. Flash is recommended for latency-sensitive use cases, Pro for complex reasoning.