37signals

37signals.com

37signals declares 12 subprocessors in its subprocessor list, which we last checked on Oct 30, 2026 (evidence). They include Google Cloud, OpenAI and Anthropic. No published changes since we first read it on Oct 29, 2026. 1 tracked vendor, PROS, names 37signals as a subprocessor.

Subprocessors CSV · Atom DORA draft CSV what's this? · 

12 third parties.

NamePurposeLocationListed since
Anthropic AIAI assistant tools used by our staffUnited States
Apple Push notifications to Apple devicesUnited States
Birdie Support request screen recordingsFrance
Braintree Payment processing servicesUnited States
Cloudflare Cloud services providerUnited States
Google Push notifications to Android devicesUnited States
hCaptcha Anti-bot protectionUnited States
Help Scout Help desk softwareUnited States
OpenAI AIAI assistant tools used by our staffUnited States
Plausible Analytics for signup and welcome pagesEstonia
Sentry Error reporting softwareUnited States
TaxJar Sales tax calculationUnited States

Subprocessor of (1)CSV · Atom

1 company
  • PROS pros.com Basecamp project and communication management

Incidents reported by 37signals's subprocessorsCSV · Atom

65 reported incidents in the last 30 days, by 3 of the vendors 37signals lists as subprocessors.

A subprocessor list names a company, not the service an incident touched. This does not show that 37signals was involved.

DateCompanyIncidentImpactLasted
OpenAIElevated errors with search in Dots, ChatGPT Work, and certain ChatGPT thinking experiences minor1 h 35 min
OpenAIElevated errors for GPT Image 2 API image edits minor4 h 1 min
AnthropicElevated errors affecting the Google Calendar connector minor3 h 46 min
AnthropicElevated errors affecting the Gmail connector minor1 h 48 min
AnthropicElevated errors for Claude Sonnet 5.5 major41 min
OpenAI6.1 Sol Degraded Model Performance minor1 h 17 min
AnthropicElevated errors for Claude Sonnet 5.5 major42 min
OpenAIElevated error rates for most hosted Code Reviews and Security Reviews on private GitHub repositories no impact stated29 min
OpenAIElevated error rates for Ads POST requests minor11 min
AnthropicElevated errors for Claude Fable 5.1 major32 min
AnthropicElevated errors for Claude Sonnet 5.5 and other models major1 h 39 min
AnthropicElevated errors for Claude Fable 5 and Claude Fable 5.1 major36 min
AnthropicElevated errors for Claude Opus 5.5 major5 min
AnthropicElevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5 critical33 min
OpenAIDegraded experience with ChatGPT app connections using CIMD minor50 min
OpenAIHelp Center Chat Support Degraded no impact stated32 min
OpenAIDelays in customer support responses no impact stated2 h 17 min
OpenAINew Ad Accounts failing to provision admins minor4 h 31 min
OpenAIDegraded Performance of Dots on Enterprise minor2 h 4 min
AnthropicElevated errors affecting Connectors minor4 h 16 min
OpenAIElevated ChatGPT conversation and Responses API errors minor6 h 32 min
OpenAIAuthentication errors for some users major—
AnthropicDegraded performance for Claude Fable 5 minor40 min
SentryIncreased latency processing integration webhooks minor20 min
OpenAIElevated error rates for gpt-5.6-luna API requests minor1 h 9 min

And 40 more. All of them: CSV · Who is around them.

ChangesCSV · Atom

See the list as we read it on any date: Time machine

None since tracking began.

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