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Writing / Tag / 4 of 70

MCP

Every essay tagged MCP, newest first.

October 2026

1 essay / No. 65 to 65

No. 65 / 11 Oct / 11 min
Your Long MCP Tool Call Dies at the Client Timeout
A tool that takes four minutes to run cannot answer inside a client request that gives up after sixty seconds.

September 2026

2 essays / No. 39 to 42

No. 42 / 11 Sept / 11 min
The MCP Tool You Approved Last Week Is Not the One Running Today
You approved an MCP server once, and your agent has trusted its tools ever since.
No. 39 / 08 Sept / 11 min
MCP Went Stateless. Your Server Still Holds Sessions.
The 2026-07-28 MCP spec dropped the initialize handshake and the session id, which means any request can now land on any replica behind a plain load balancer.

July 2026

1 essay / No. 05 to 05

No. 5 / 18 Jul / 10 min
Your Agent Reads 150,000 Tokens Before It Sees the Request
Connect a dozen MCP servers to an agent and you pay for every tool definition on every turn, before the user has said a word.