featured imageMarika
March 30, 2026

MCP API Upgrade: Built for AI Agents Across CoinAPI and FinFeedAPI

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APIs are evolving.

They’re no longer just tools for fetching data. They’re becoming the foundation for AI agents, automated workflows, and real-time decision systems.

That shift requires more than speed, it requires structure. This is exactly what the new MCP API delivers.

The MCP API has been completely rebuilt.

Previously, it was auto-generated from REST endpoints. It worked, but it wasn’t optimized for how modern systems use data.

Now, MCP is purpose-built for AI agents.

The result is a more structured, predictable, and efficient way to interact with financial data across both CoinAPI and FinFeedAPI.

This upgrade is available across all products:

  • CoinAPI Market Data API
  • CoinAPI Flat Files API
  • CoinAPI Exchange Rates API
  • CoinAPI Indexes API
  • FinFeedAPI Stock API
  • FinFeedAPI SEC Filings API
  • FinFeedAPI Currencies API
  • FinFeedAPI Prediction Markets API
  • FinFeedAPI Flat Files API

If you're building anything from trading systems to AI copilots, this changes how smoothly your stack operates.

There’s one important update you need to act on.

SSE (Server-Sent Events) MCP is now deprecated and will be removed on April 16, 2026.

To avoid disruptions, update your endpoint:

Old:

1/sse

New:

1/mcp (Streamable HTTP)

This is a breaking change. Any integration still using SSE MCP after the deadline will stop working.

If your system relies on real-time data or automation, migrating early is strongly recommended.

This isn’t just a technical improvement—it directly impacts performance and developer experience.

AI systems depend on consistency. The new MCP API delivers structured outputs that are easier to process and reason about.

No more adapting generic REST responses. MCP provides data in a format designed for machine consumption.

From small tools to large-scale infrastructure, MCP handles load more efficiently across all supported APIs.

The new MCP API is designed for how developers build today:

  • AI agents
  • Copilots
  • Automated research pipelines
  • Real-time trading and analytics systems

This is especially relevant when working with datasets like the Prediction Markets API, where structured, real-time data helps model probabilities, track sentiment, and automate decisions.

Getting started is simple.

1# CoinAPI
2X-CoinAPI-Key: <YOUR_API_KEY>
3
4# FinFeedAPI
5X-APIBricks-Key: <YOUR_API_KEY>
ProductMCP URL
CoinAPI Market Data APIhttps://mcp.md.coinapi.io/mcp
CoinAPI Flat Files APIhttps://mcp.flatfiles.coinapi.io/mcp
CoinAPI Indexes APIhttps://mcp.indexes.coinapi.io/mcp
CoinAPI Exchange Rates API (Historical)https://api-historical.exrates.coinapi.io/mcp
CoinAPI Exchange Rates API (Real-time)https://api-realtime.exrates.coinapi.io/mcp
FinFeedAPI Stock API (Historical)https://api-historical.stock.finfeedapi.com/mcp
FinFeedAPI SEC Filings APIhttps://api.sec.finfeedapi.com/mcp
FinFeedAPI Currencies API (Historical)https://api-historical.fx.finfeedapi.com/mcp
FinFeedAPI Currencies API (Real-time)https://api-realtime.fx.finfeedapi.com/mcp
FinFeedAPI Prediction Markets APIhttps://api.prediction-markets.finfeedapi.com/mcp
FinFeedAPI Flat Files APIhttps://mcp.flatfiles.finfeedapi.com/mcp

This release reflects a broader shift. APIs are no longer just data access layers, they are becoming interfaces for intelligent systems.

With MCP redesigned specifically for AI, both CoinAPI and FinFeedAPI are moving toward a future where structured data, automation, and real-time insights work together. If you're building data-driven systems, this is the version of MCP to use.

The upgrade is live.

Switch to the new /mcp endpoints, update your integration, and start building faster, more reliable AI-powered workflows.

Whether you're working with market data, exchange rates, stocks, or prediction markets, MCP gives you the structure needed to move from raw data to intelligent systems without friction.

Check out other upgrades:

CoinAPI Changelog

FinFeedAPI Changelog

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