Harmonic MCP Server for LlamaIndex 11 tools — connect in under 2 minutes
LlamaIndex specializes in data-aware AI agents that connect LLMs to structured and unstructured sources. Add Harmonic as an MCP tool provider through Vinkius and your agents can query, analyze, and act on live data alongside your existing indexes.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
import asyncio
from llama_index.tools.mcp import BasicMCPClient, McpToolSpec
from llama_index.core.agent.workflow import FunctionAgent
from llama_index.llms.openai import OpenAI
async def main():
# Your Vinkius token. get it at cloud.vinkius.com
mcp_client = BasicMCPClient("https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")
mcp_tool_spec = McpToolSpec(client=mcp_client)
tools = await mcp_tool_spec.to_tool_list_async()
agent = FunctionAgent(
tools=tools,
llm=OpenAI(model="gpt-4o"),
system_prompt=(
"You are an assistant with access to Harmonic. "
"You have 11 tools available."
),
)
response = await agent.run(
"What tools are available in Harmonic?"
)
print(response)
asyncio.run(main())
* 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.
LlamaIndex agents combine Harmonic tool responses with indexed documents for comprehensive, grounded answers. Connect 11 tools through Vinkius and query live data alongside vector stores and SQL databases in a single turn. ideal for hybrid search, data enrichment, and analytical workflows.
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 LlamaIndex 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 LlamaIndex via MCP
Follow these steps to integrate the Harmonic MCP Server with LlamaIndex.
Install dependencies
Run pip install llama-index-tools-mcp llama-index-llms-openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the agent
Save to agent.py and run: python agent.py
Explore tools
The agent discovers 11 tools from Harmonic
Why Use LlamaIndex with the Harmonic MCP Server
LlamaIndex provides unique advantages when paired with Harmonic through the Model Context Protocol.
Data-first architecture: LlamaIndex agents combine Harmonic tool responses with indexed documents for comprehensive, grounded answers
Query pipeline framework lets you chain Harmonic tool calls with transformations, filters, and re-rankers in a typed pipeline
Multi-source reasoning: agents can query Harmonic, a vector store, and a SQL database in a single turn and synthesize results
Observability integrations show exactly what Harmonic tools were called, what data was returned, and how it influenced the final answer
Harmonic + LlamaIndex Use Cases
Practical scenarios where LlamaIndex combined with the Harmonic MCP Server delivers measurable value.
Hybrid search: combine Harmonic real-time data with embedded document indexes for answers that are both current and comprehensive
Data enrichment: query Harmonic to augment indexed data with live information before generating user-facing responses
Knowledge base agents: build agents that maintain and update knowledge bases by periodically querying Harmonic for fresh data
Analytical workflows: chain Harmonic queries with LlamaIndex's data connectors to build multi-source analytical reports
Harmonic MCP Tools for LlamaIndex (11)
These 11 tools become available when you connect Harmonic to LlamaIndex 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 LlamaIndex
Ready-to-use prompts you can give your LlamaIndex 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 LlamaIndex
Common issues when connecting Harmonic to LlamaIndex through the Vinkius, and how to resolve them.
BasicMCPClient not found
pip install llama-index-tools-mcpHarmonic + LlamaIndex FAQ
Common questions about integrating Harmonic MCP Server with LlamaIndex.
How does LlamaIndex connect to MCP servers?
Can I combine MCP tools with vector stores?
Does LlamaIndex support async MCP calls?
Connect Harmonic 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 Harmonic to LlamaIndex
Get your token, paste the configuration, and start using 11 tools in under 2 minutes. No API key management needed.