GitBook

gitbook.com

GitBook declares 21 subprocessors in its subprocessor list, which we last checked on Nov 11, 2026 (evidence). They include Google Cloud, OpenAI and Stripe. No published changes since we first read it on Oct 26, 2026. 4 tracked vendors name GitBook as a subprocessor, including Deepgram, Mailtrap and Apica.

Subprocessors CSV of GitBook's subprocessors · Atom feed of GitBook's subprocessors DORA draft CSV of GitBook's subprocessors as declared by GitBook what's this? · 

21 third parties.

NamePurposeLocationListed since
Amplitude Customer analytics processorUnited States
Bucket.co Feature flaggingUnited States
Castle.io Security & Bots detectionUnited States
ClearbitSign Sign-up risk evaluationUnited States
Clickhouse Database infrastructureUnited States
Cloudflare Hosting providerUnited States
DocuSign Contract signature processorUnited States
Google Analytics Website analytics and performanceUnited States
Google Apps Internal company infrastructureUnited States
Google Cloud / Firebase Hosting and database infrastructureUnited States
Iframely Embeds generationUnited States
Intercom Customer support ticketing systemUnited States
MagicBell Notifications infrastructureUnited States
OpenAI AIAI infrastructureUnited States
Planetscale Database infrastructureUnited States
Segment Customer analytics processorUnited States
Sendgrid Email infrastructureUnited States
Sentry Error analytics processorUnited States
Stripe Subscription credit card payment processorUnited States
Turbopuffer Search infrastructureUnited States
Vercel Hosting (data & compute)United States

Web TechnologiesCSV of GitBook's web technologies · Atom feed of GitBook's web technologies

GitBook's homepage made 159 requests to 21 domains, and 10 services controlled by another company.

Analytics (4): HubSpot, Amplitude, LinkedIn, LeadfeederAdvertising (3): Google Cloud, Reddit, Inc.; usually detected as Advertising: MicrosoftMarketing automation (1): DistroOther (2): usually detected as Font scripts: Font Awesome; Page builders: Framer

10 third parties by category: Analytics 4Advertising 3Marketing automation 1Other 2

Third parties 10 · 122 requests
Framer Framer Sites 54% of the page's requests 86
Google Cloudsubprocessor DoubleClick Floodlight Google Analytics Google Tag Manager 7% of the page's requests 11
Microsoft clarity.ms 4% of the page's requests 7
HubSpot HubSpot HubSpot Analytics 3% of the page's requests 4
Amplitudesubprocessor Amplitude 2% of the page's requests 3
Font Awesome fontawesome.com 2% of the page's requests 3
LinkedIn Linkedin Insight Tag 2% of the page's requests 3
Leadfeeder Leadfeeder 1% of the page's requests 2
Reddit, Inc. Reddit Ads 1% of the page's requests 2
Distro Distro <1% of the page's requests 1
First party 1 · 37 requests
GitBook Cloudflare Framer Motion GitBook Google Font API HSTS HTTP/3 Linkedin Ads Microsoft Clarity Open Graph Priority Hints React 23% of the page's requests 37

5 tracked companies loaded by the homepage are not in GitBook's subprocessor list. A website can use a service without it processing customer data.

Subprocessor of (4)CSV of the companies listing GitBook · Atom feed of the companies listing GitBook

4 companies
  • Apica apica.io AI documentation USA
  • Deepgram deepgram.com A a platform for creating and publishing digital books and documentation with built-in support for Git version control
  • Mailtrap mailtrap.io Infrastructure – powers the in-app AI Assistant
  • MangoApps mangoapps.com Federated Search (optional)

Service statusCSV of GitBook's status page incidents · Atom feed of GitBook's status page incidents

Aug 15: no incident reportedAug 16: no incident reportedAug 17: 1 incident (1 minor)Aug 18: no incident reportedAug 19: no incident reportedAug 20: no incident reportedAug 21: no incident reportedAug 22: no incident reportedAug 23: no incident reportedAug 24: no incident reportedAug 25: no incident reportedAug 26: no incident reportedAug 27: no incident reportedAug 28: no incident reportedAug 29: no incident reportedAug 30: no incident reportedAug 31: no incident reportedSep 1: no incident reportedSep 2: no incident reportedSep 3: no incident reportedSep 4: no incident reportedSep 5: 1 incident (1 critical)Sep 6: no incident reportedSep 7: no incident reportedSep 8: no incident reportedSep 9: no incident reportedSep 10: no incident reportedSep 11: no incident reportedSep 12: no incident reportedSep 13: no incident reportedSep 14: no incident reportedSep 15: no incident reportedSep 16: no incident reportedSep 17: no incident reportedSep 18: no incident reportedSep 19: no incident reportedSep 20: no incident reportedSep 21: no incident reportedSep 22: no incident reportedSep 23: no incident reportedSep 24: no incident reportedSep 25: no incident reportedSep 26: no incident reportedSep 27: no incident reportedSep 28: no incident reportedSep 29: no incident reportedSep 30: no incident reportedOct 1: no incident reportedOct 2: no incident reportedOct 3: no incident reportedOct 4: no incident reportedOct 5: no incident reportedOct 6: no incident reportedOct 7: no incident reportedOct 8: no incident reportedOct 9: no incident reportedOct 10: no incident reportedOct 11: no incident reportedOct 12: no incident reportedOct 13: no incident reportedOct 14: no incident reportedOct 15: no incident reportedOct 16: no incident reportedOct 17: no incident reportedOct 18: no incident reportedOct 19: no incident reportedOct 20: no incident reportedOct 21: no incident reportedOct 22: no incident reportedOct 23: no incident reportedOct 24: no incident reportedOct 25: no incident reportedOct 26: no incident reportedOct 27: no incident reportedOct 28: 1 incident (1 minor)Oct 29: no incident reportedOct 30: no incident reportedOct 31: no incident reportedNov 1: no incident reportedNov 2: 2 incidents (1 critical, 1 major)Nov 3: 1 incident (1 critical)Nov 4: 1 incident (1 major)Nov 5: no incident reportedNov 6: no incident reportedNov 7: no incident reportedNov 8: no incident reportedNov 9: no incident reportedNov 10: no incident reportedNov 11: no incident reportedNov 12: no incident reported

90 days agotoday

  • 7 incidents in 90 days
  • 5 major or critical
  • 7 h 18 min typical time to resolve
  • 30 h 7 min longest major
BeganIncidentImpactLasted
Git Sync affected by GitHub disruptionmajor1 h 47 min
Security incident impacting published sites and GitBook appcritical30 h 7 min
GitBook services unavailablecritical8 h 25 min
Git Sync causing missing page contentmajor5 h 13 min
API operations are slower than usualminor14 h 32 min
App and published docs unavailablecritical4 min
GitHub outage affecting Git Syncminor7 h 18 min
GitBook webapp is returning 500critical1 h 33 min

Incidents per month

0 2 4 Dec 2025: 1 incident (1 critical) · typical time to resolve 59 min Jan 2026: 0 incidents Feb 2026: 1 incident (1 critical) · typical time to resolve 21 min Mar 2026: 2 incidents (2 major) · typical time to resolve 4 h 4 min Apr 2026: 1 incident (1 major) · typical time to resolve 13 h 22 min May 2026: 2 incidents (2 major) · typical time to resolve 2 h 22 min Jun 2026: 3 incidents (1 critical, 2 major) · typical time to resolve 1 h 28 min Jul 2026: 0 incidents Aug 2026: 1 incident (1 minor) · typical time to resolve 7 h 18 min Sep 2026: 1 incident (1 critical) · typical time to resolve 4 min Oct 2026: 1 incident (1 minor) · typical time to resolve 14 h 32 min Nov 2026: 4 incidents (2 critical, 2 major) · typical time to resolve 8 h 25 min Dec 2025Jan 2026Feb Mar Apr May Jun Jul Aug Sep Oct Nov

critical major minor no impact stated

As GitBook's status page reports its own incidents (scheduled maintenance left out), read every few hours since (evidence)

Incidents reported by GitBook's subprocessorsCSV of incidents reported by vendors GitBook lists · Atom feed of incidents reported by vendors GitBook lists

272 reported incidents in the last 30 days, by 12 of the vendors GitBook lists as subprocessors.

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

DateCompanyIncidentImpactLasted
SendGrid· SegmentMMS Delivery Failures from Twilio to GCI United States minor3 min
SendGrid· SegmentSMS Delivery Failures from Twilio Long Codes to AT&T United States minorongoing
SendGrid· SegmentSMS Delivery Failures from Twilio to Orange Sierra Leone minorongoing
SendGrid· SegmentSMS Delivery Failures From Long Code Numbers to AT&T in the US minor1 h 19 min
SendGrid· SegmentSMS Delivery Delays from Twilio to MTS Kazakhstan minorongoing
SendGrid· SegmentSMS Delivery Failures from a Subset of Twilio Phone Numbers to Tcell Tajikistan minorongoing
OpenAIUnable to start new Workspace Agent runs criticalongoing
SendGrid· SegmentMMS Delivery Delays from a Subset of Twilio Long Codes to Multiple Small Networks in United States minorongoing
SendGrid· SegmentSMS Delivery Failures from a Subset of Twilio Phone Numbers to K-Cell Kazakhstan minorongoing
OpenAIElevated errors affecting logins, sign-ups, and ChatGPT features minor8 min
turbopufferDashboard Outage critical—
SentryUS issues feed throwing intermittent errors minor51 min
SendGrid· SegmentVoice Call Failures in JP1 minor3 h 51 min
SegmentOn Call Engineers are Investigating no impact statedongoing
ClickHouseProvisioning and scaling operations may take longer in AWS ap-northeast-1 Tokyo minor7 h 38 min
SendGrid· SegmentSMS Delivery Failures from Twilio to Turkcell Turkey minor3 h 54 min
SentryAccount emails not being delivered major42 min
SendGrid· SegmentRetroactive Incident Impacting Twilio Usage APIs no impact stated1 min
SendGrid· SegmentIssue resolved minor1 h 43 min
SentryEU region replay ingestion latency minor48 min
VercelElevated Sandbox and Blob request latency and errors minor1 min
SendGrid· SegmentSMS Delivery Receipt Delays from Twilio Phone Numbers to Movistar Venezuela minor3 h 26 min
SendGrid· SegmentGateway API (Lookup API) Failure Increase on Verizon in United States minor10 h 23 min
OpenAIIncorrect cost data in Costs API exports no impact stated2 h 20 min
OpenAIElevated Errors On API minor42 min

And 247 more. All of them: CSV · Who is around them.

ChangesCSV of GitBook's changes · Atom feed of GitBook's changes

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

None since tracking began.

Rating badge for GitBook's site

GitBook transparency rating

It updates with the rating.

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