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Amara Nwosu
22 hours ago

Nightfall blocked our MCP gh call mid-hotfix

Nightfall MCP Gateway
Govern Cursor and Claude Code MCP tool calls

Tried Nightfall MCP Gateway on Tuesday night because Claude Code kept calling gh against the wrong org during a payout hotfix.

It did catch the bad call. Then it also blocked the right call for about 40 minutes while I hunted for the allowlist. Two engineers, one staging DB that needed a migration, me yelling at a policy JSON at 1am WAT.

Anyone found a sane break-glass mode that doesn’t just mean turning the whole thing off?

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  • Jonas Kessler

    What was the diff size on the policy change that finally unblocked you?

    We put Nightfall in front of Cursor last week. Useful once. Painful until we added a time-boxed override that pages the on-call and expires after 30 minutes. Silent permanent bypass is just security theater with extra YAML.

  • Tomo

    same here on a toy repo lol. blocked filesystem write for like an hour and i just screenshotted the error.

    i turned it off. maybe i try again after i actually ship something that matters

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