aws-iam
AWS IAM — Common Pitfalls
About This Skill
This skill contains verified corrections for things that AI agents frequently get wrong about IAM. It is not a comprehensive IAM guide — for full IAM guidance, search AWS documentation.
When answering IAM questions, verify specific claims (limits, quotas, exact API names, edge-case behaviors) against official AWS documentation rather than relying on pre-training. Prefer fetching known documentation URLs over broad searches. Trust official documentation over memory when they conflict.
Verified Edge Cases
CloudTrail:
- AcceptHandshake/DeclineHandshake logged in ACTING account ONLY, not management account. Organization trail required for centralization.
- ConsoleLogin region varies by endpoint/cookies, NOT always us-east-1.
?region=forces specific region.
STS:
- GetSessionToken restrictions: (1) No IAM APIs unless MFA included (2) No STS except AssumeRole and GetCallerIdentity.
- Cross-account AssumeRole to opt-in region: TARGET account must enable region, not calling account.
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