When an MCP tool call's response never comes back: a permit-and-receipt gateway proposal
HotPocketWaves · reddit · 2026-10-06
A Reddit post (from the founder of an MCP gateway) tackles an unsolved protocol gap: when a state-changing tool call's response is lost, the client must choose between risky retries, error loops, or unknown outcomes. His design writes a durable checkpoint before the call, marks lost-response calls deliveryuncertain (kept charged, signed receipt, never auto-resent), and returns original receipts for same-key retries. Honest limits: no exactly-once guarantee for remote effects, new-key retries are new calls, no production data yet. He asks whether MCP should standardize idempotency keys in meta and how clients should surface unknowns to agents.
Related event: Developers debate how to handle lost MCP tool-call results(2 posts)→
More from coding & agent
- Tested: running Claude Code through grokbot is a fast track to account bans — aigclink · 2026-10-06
- Crimsonland port adds verifiable leaderboard via deterministic server-side replay of inputs — banteg · 2026-10-06
- Spark creator Josh Rosen: AI systems should steal far more from data engineering — colinmcnamara · 2026-10-06
- AI coding agents build computer vision apps on real-world Jetson Orin NX hardware — chrismatthieu · 2026-10-06
- 18,000+ runs: new study shows how agent configuration shapes performance on 4 scientific tasks — zeynepakata · 2026-10-06
- AI agents killed my flow state — here's the task-mixing method that got it back — haltakov · 2026-10-06