How to gate MCP write actions: preview+confirm plus hard limits debated
Staff_Sharp · reddit · 2026-10-07
A Reddit discussion on gating MCP server write operations when mistakes cost real money (pausing campaigns, changing ad budgets). Approaches covered: fully separating read/write tools and exposing writes only in opted-in sessions; preview-plus-token-confirm calls the model can't bypass; relying on client permission prompts (fragile once users click "always allow"); and hard server-side limits like per-call budget caps or no deletes. Author favors preview+confirm with hard limits but finds confirmation tedious for small changes, and asks whether others tier by risk.
More from coding & agent
- Coinbase's Lincoln Murr on paying AI agents via the x402 protocol — MurrLincoln · 2026-10-07
- Resend logs 3M MCP calls last month, up ~30x since April — dsp_ · 2026-10-07
- Dev vibes-clones his 2-year game with Claude: looks right, plays wrong — IanArawjo · 2026-10-07
- Y Combinator-backed Linc launches discovery layer that turns enterprise tribal knowledge into SOPs — ycombinator · 2026-10-07
- Don't delete your agent memory systems yet: focused .md files still win — gregbarbosa · 2026-10-07
- A no-RAG agent memory system with plain markdown saves ~155k tokens per run — gregbarbosa · 2026-10-07