An agent with full-key access is the real risk: four rules for least-privilege agent credentials
sujingshen · x · 2026-09-16
Quoting mem0ai's launch of Gateway — which gives each agent a single key scoped to only the tools you grant, across MCP servers and your own APIs, with the agent never seeing real credentials (beta customers already run 95,000+ calls each) — the author argues the scarier risk isn't agents forgetting, but agents with keys wide open.
Checking a payment shouldn't allow refunds; drafting a page shouldn't allow archiving everything. This permission mismatch is the second risk surface of personal AI. His four criteria for vetting agent delegates:
- Least privilege: can the tool set be written as an explicit grant?
- Credential isolation: must the agent ever see the real master key?
- Task lifecycle: does the grant auto-revoke when the task ends?
- Audit replay: can over-privileged calls be traced on a timeline?
A digital twin without permission boundaries isn't a personal AI — it's just a remote operator.
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