How do I get my Arcsecond.io API Key?

Log in to your Arcsecond.io account and go to your **Profile** page. You will find your Personal API Key there.

What is an observatory subdomain?

If you are part of a specific observatory or organization on Arcsecond.io, your data is hosted on a subdomain (e.g., `myobs.arcsecond.io`). You can use this subdomain to access site-specific data.

Can I search for any astronomical object?

Yes, the `search_objects` tool allows you to search across millions of objects in the SIMBAD, Gaia, and other astronomical databases integrated into Arcsecond.io.

Arcsecond.io MCP Server for Pydantic AI 7 tools — connect in under 2 minutes

Name: Arcsecond.io
Availability: InStock
Author: Vinkius

ai.pydantic.dev/mcp

Built by Vinkius GDPR 7 Tools SDK

Pydantic AI brings type-safe agent development to Python with first-class MCP support. Connect Arcsecond.io through Vinkius and every tool is automatically validated against Pydantic schemas. catch errors at build time, not in production.

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

import asyncio
from pydantic_ai import Agent
from pydantic_ai.mcp import MCPServerHTTP

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    server = MCPServerHTTP(url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")

    agent = Agent(
        model="openai:gpt-4o",
        mcp_servers=[server],
        system_prompt=(
            "You are an assistant with access to Arcsecond.io "
            "(7 tools)."
        ),
    )

    result = await agent.run(
        "What tools are available in Arcsecond.io?"
    )
    print(result.data)

asyncio.run(main())

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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 Arcsecond.io MCP Server

The Arcsecond.io MCP Server provides a unified natural language interface to the world's astronomical data. Connect your Arcsecond account to your AI agent to search for celestial objects, manage observatory data, and track observation night logs seamlessly.

Pydantic AI validates every Arcsecond.io tool response against typed schemas, catching data inconsistencies at build time. Connect 7 tools through Vinkius and switch between OpenAI, Anthropic, or Gemini without changing your integration code. full type safety, structured output guarantees, and dependency injection for testable agents.

Key Features

Celestial Object Search — Search for stars, galaxies, planets, and more to retrieve official names, types, and precise coordinates (RA/Dec).
Object Metadata — Access detailed astrophysical data, including visual magnitude and classifications for millions of objects.
Observatory Management — List observing sites, telescopes, and instruments associated with your observatory subdomain.
Data Tracking — Access datasets and night logs to monitor ongoing observations and historical data collections.
Night Log Oversight — Retrieve detailed logs of observations and calibrations organized by local noon-to-noon cycles.
Global Data Access — Interface with a vast network of astronomical databases through a single, consistent API.

The Arcsecond.io MCP Server exposes 7 tools through the Vinkius. Connect it to Pydantic AI 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 Arcsecond.io to Pydantic AI via MCP

Follow these steps to integrate the Arcsecond.io MCP Server with Pydantic AI.

Install Pydantic AI

Run pip install pydantic-ai

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 7 tools from Arcsecond.io with type-safe schemas

Why Use Pydantic AI with the Arcsecond.io MCP Server

Pydantic AI provides unique advantages when paired with Arcsecond.io through the Model Context Protocol.

Full type safety: every MCP tool response is validated against Pydantic models, catching data inconsistencies before they reach your application

Model-agnostic architecture. switch between OpenAI, Anthropic, or Gemini without changing your Arcsecond.io integration code

Structured output guarantee: Pydantic AI ensures tool results conform to defined schemas, eliminating runtime type errors

Dependency injection system cleanly separates your Arcsecond.io connection logic from agent behavior for testable, maintainable code

Arcsecond.io + Pydantic AI Use Cases

Practical scenarios where Pydantic AI combined with the Arcsecond.io MCP Server delivers measurable value.

Type-safe data pipelines: query Arcsecond.io with guaranteed response schemas, feeding validated data into downstream processing

API orchestration: chain multiple Arcsecond.io tool calls with Pydantic validation at each step to ensure data integrity end-to-end

Production monitoring: build validated alert agents that query Arcsecond.io and output structured, schema-compliant notifications

Testing and QA: use Pydantic AI's dependency injection to mock Arcsecond.io responses and write comprehensive agent tests

Arcsecond.io MCP Tools for Pydantic AI (7)

These 7 tools become available when you connect Arcsecond.io to Pydantic AI via MCP:

get_account_check

Verify Arcsecond account connection

get_object

Get details for a specific astronomical object

list_datasets

List datasets available for an observatory

list_night_logs

List observation night logs for an observatory

list_observing_sites

List observing sites for an observatory

list_telescopes

List telescopes for an observatory

search_objects

Search for astronomical objects (stars, galaxies, planets)

Example Prompts for Arcsecond.io in Pydantic AI

Ready-to-use prompts you can give your Pydantic AI agent to start working with Arcsecond.io immediately.

"Search for the 'Andromeda Galaxy' and get its coordinates."

"List all observing sites for the 'lco' observatory."

"Show me recent night logs for subdomain 'my-observatory'."

Troubleshooting Arcsecond.io MCP Server with Pydantic AI

Common issues when connecting Arcsecond.io to Pydantic AI through the Vinkius, and how to resolve them.

MCPServerHTTP not found

Update: pip install --upgrade pydantic-ai

Arcsecond.io + Pydantic AI FAQ

Common questions about integrating Arcsecond.io MCP Server with Pydantic AI.

How does Pydantic AI discover MCP tools?

Create an MCPServerHTTP instance with the server URL. Pydantic AI connects, discovers all tools, and generates typed Python interfaces automatically.

Does Pydantic AI validate MCP tool responses?

Yes. When you define result types as Pydantic models, every tool response is validated against the schema. Invalid data raises a clear error instead of silently corrupting your pipeline.

Can I switch LLM providers without changing MCP code?

Absolutely. Pydantic AI abstracts the model layer. your Arcsecond.io MCP integration works identically with OpenAI, Anthropic, Google, or any supported provider.