Holiday API MCP Server for LlamaIndex 5 tools — connect in under 2 minutes
LlamaIndex specializes in data-aware AI agents that connect LLMs to structured and unstructured sources. Add Holiday API 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 Holiday API. "
"You have 5 tools available."
),
)
response = await agent.run(
"What tools are available in Holiday API?"
)
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 Holiday API MCP Server
Empower your AI agent to orchestrate your entire global event and holiday research workflow with Holiday API, the reliable source for holiday data. By connecting Holiday API to your agent, you transform complex calendar auditing into a natural conversation. Your agent can instantly retrieve public holidays for any country, audit workday counts, and identify supported languages without you ever touching a manual calendar. Whether you are planning international logistics or managing global payroll, your agent acts as a real-time event consultant, ensuring your schedules are always accurate and compliant.
LlamaIndex agents combine Holiday API tool responses with indexed documents for comprehensive, grounded answers. Connect 5 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
- Holiday Auditing — Retrieve public and federal holidays for over 200 countries and retrieve detailed metadata, including names and dates.
- Workday Oversight — Calculate the next workday or count workdays between two dates to maintain a clear view of operational periods.
- Global Discovery — List all supported countries and languages in the Holiday API catalog to identify regional event markers.
- Temporal Intelligence — Query holidays for specific years to audit past and future global events instantly.
- Usage Monitoring — Get real-time API usage and status metadata to maintain strict control over your research volume.
The Holiday API MCP Server exposes 5 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 Holiday API to LlamaIndex via MCP
Follow these steps to integrate the Holiday API 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 5 tools from Holiday API
Why Use LlamaIndex with the Holiday API MCP Server
LlamaIndex provides unique advantages when paired with Holiday API through the Model Context Protocol.
Data-first architecture: LlamaIndex agents combine Holiday API tool responses with indexed documents for comprehensive, grounded answers
Query pipeline framework lets you chain Holiday API tool calls with transformations, filters, and re-rankers in a typed pipeline
Multi-source reasoning: agents can query Holiday API, a vector store, and a SQL database in a single turn and synthesize results
Observability integrations show exactly what Holiday API tools were called, what data was returned, and how it influenced the final answer
Holiday API + LlamaIndex Use Cases
Practical scenarios where LlamaIndex combined with the Holiday API MCP Server delivers measurable value.
Hybrid search: combine Holiday API real-time data with embedded document indexes for answers that are both current and comprehensive
Data enrichment: query Holiday API 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 Holiday API for fresh data
Analytical workflows: chain Holiday API queries with LlamaIndex's data connectors to build multi-source analytical reports
Holiday API MCP Tools for LlamaIndex (5)
These 5 tools become available when you connect Holiday API to LlamaIndex via MCP:
get_holidays
Get public holidays for a country and year
get_next_workday
Get the date after a number of workdays from a start date
get_workdays_count
Count the number of workdays between two dates
list_supported_countries
List all countries supported by Holiday API
list_supported_languages
List all languages supported by Holiday API
Example Prompts for Holiday API in LlamaIndex
Ready-to-use prompts you can give your LlamaIndex agent to start working with Holiday API immediately.
"What are the public holidays in 'US' for 2024 using Holiday API?"
"Calculate the next 10 workdays from 2024-01-01 in Brazil."
"List all countries supported by Holiday API."
Troubleshooting Holiday API MCP Server with LlamaIndex
Common issues when connecting Holiday API to LlamaIndex through the Vinkius, and how to resolve them.
BasicMCPClient not found
pip install llama-index-tools-mcpHoliday API + LlamaIndex FAQ
Common questions about integrating Holiday API 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 Holiday API 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.
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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 Holiday API to LlamaIndex
Get your token, paste the configuration, and start using 5 tools in under 2 minutes. No API key management needed.