Blockworks on Thursday launched a server that brings its crypto data into ChatGPT, Claude and other AI assistants, giving users access to information covering more than 40,000 assets.
The crypto data firm said customers ranging from exchanges to funds are increasingly asking AI assistants for market data inside their day-to-day workflows. In a statement shared with Unchained, Blockworks co-founder Jason Yanowitz said, 「A growing share of our customers’ workflows happen in ChatGPT or Claude. The agent has no way to check a number, so the data has to be standardized and sourced before it ever gets there.」
Built on MCP for external data access
According to the company, the server uses the Model Context Protocol, or MCP, an open standard that allows AI tools to reach outside data sources.
Customers can connect the service to ChatGPT, Claude, the coding tool Cursor, or any other MCP-compatible assistant, then request Blockworks data with ordinary language prompts. Blockworks also said ChatGPT lists its connector as an official app.
The company said responses include attached sources, and the assistant can chart the results. Customers need a Blockworks API subscription to use the product.
Yanowitz said in the statement, 「Agents are going to be the biggest users of financial data. We want every number we have one call away for them, with the source attached.」
Unified API combines Blockworks and Messari datasets
Behind the server is the Unified API, a single-key data feed that Blockworks released on Sept. 24.
The feed combines Blockworks data with data from crypto research and data firm Messari, which Blockworks acquired in June. It covers more than 300 exchanges and includes financial data for over 400 DeFi protocols, formatted in a standardized way so they can be compared side by side.
It also includes research, news, fundraising rounds and token unlock schedules.
Messari already operates a similar server for enterprise clients. Asked whether that server would be wound down after the new launch, Yanowitz told Unchained, 「Yes, but not immediately. Messari’s MCP will stay up while customers transition over, then we’ll turn it off.」
Clean inputs do not guarantee correct model outputs
Blockworks said that clean data going into an AI system does not automatically mean the answer coming out will be correct. A model may retrieve an accurate figure, then still misstate it when restating, summing or comparing numbers, leaving users with incorrect information that appears to be sourced.
Yanowitz told Unchained that Blockworks uses both agents and human reviewers across research analysts, data analysts and data engineers to check every number before it reaches a model.
He added that every answer returns with the raw figures and sources attached, allowing users to check the model’s work themselves.
Other crypto data providers already offer MCP servers
Blockworks is not the first crypto data provider to launch an MCP server. CoinGecko runs one, and CoinMarketCap allows agents without an API key to pay 0.01 USDC per call on its version.
Yanowitz told Unchained that Blockworks sees breadth as its main point of difference. 「We combined the breadth of Messari data with the depth of Blockworks data,」 he said, adding that the server returns more than 20 kinds of data in one place, ranging from ETFs and treasury companies to governance proposals and podcasts.
Launch follows Agentic Detection rollout
The release came two weeks after Blockworks rolled out Agentic Detection, a monitoring feature that sends compliance teams alerts flagged by AI agents.