# Polygon.io

> Use this tool when you need to access comprehensive financial market data, including real-time and historical trades, quotes, and aggregates, to power applications such as financial analysis, algorithmic trading research, and market monitoring. It provides a streamlined interface to Polygon.io's API through 35+ tools, handling major endpoints with automatic JSON parsing and error handling. With support for multiple transport protocols, it is ideal for building AI assistants and other applications that require professional-grade market data.

Canonical page: https://skillsregistry.net/skills/polygon  
JSON: https://api.skillsregistry.net/v1/skills/polygon

## Description

This MCP server provides complete access to Polygon.io's financial market data API through 35+ tools covering stocks, options, forex, and crypto data including real-time and historical trades, quotes, aggregates, market snapshots, ticker details, news, dividends, splits, and financial fundamentals. Built by Polygon.io using Python with the FastMCP framework and their official API client, it handles all major endpoints with automatic JSON parsing and comprehensive error handling, supporting multiple transport protocols including STDIO, SSE, and Streamable HTTP. The implementation is valuable for financial analysis, algorithmic trading research, market monitoring, and building AI assistants that need access to professional-grade market data including treasury yields, short interest, IPO information, and real-time currency conversion.

## Trust

- **Trust score (0–1):** 1.00
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** finance
- **Updated:** 2026-09-19

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/polygon)
- **Repository:** <https://github.com/massive-com/mcp_massive>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "polygon"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/polygon` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/polygon/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt