README: add endpoint to agent-economy-data line

README.md

@@ -68,7 +68,7 @@ Notebooks are stored without outputs or metadata; `python tools/make_notebooks.p
 - [agent-economy-glossary](https://huggingface.co/datasets/markedet/agent-economy-glossary): 40 short definitions of MCP, A2A and AI agent terms
 - [agent-economy-diagrams](https://huggingface.co/datasets/markedet/agent-economy-diagrams): ten diagrams of how MCP and A2A work, as SVG, PNG and Graphviz source
 - [Spec change radar](https://markedet.bitbucket.io/spec-radar/): MCP and A2A specification releases, each with a short summary, as a page and an Atom or JSON feed
-- [agent-economy-data](https://bitbucket.org/markedet/agent-economy-data): a small read-only MCP server that answers count questions about the MCP server ecosystem
+- [agent-economy-data](https://bitbucket.org/markedet/agent-economy-data): a small read-only MCP server that answers count questions about the MCP server ecosystem. Free, no key. Endpoint (Streamable HTTP): https://agent-economy-data.onrender.com/mcp . The free host sleeps when idle, so the first call can take a minute.
 
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