# Circle

Circle (circle.so): subprocessors, data processing agreement, security documents and changes, as monitored by Third Party Index.

- Page: https://thirdpartyindex.com/vendors/circle-so
- Documents last verified: 2026-09-30
- Transparency rating: 84/100 (how much it publishes, not how secure it is)
- Cite as: Circle, Third Party Index, https://thirdpartyindex.com/vendors/circle-so (data CC BY 4.0)

## Documents

| Document | URL | Last verified | Last changed |
|---|---|---|---|
| Trust center | https://trust.circle.so/ | 2026-09-30 | 2026-09-30 |
| Subprocessor list | https://trust.circle.so/subprocessors | 2026-09-30 | 2026-09-30 |
| Data processing addendum | https://circle.so/dpa | 2026-09-30 | 2026-09-30 |
| Privacy policy | https://circle.so/privacy | 2026-09-30 | 2026-09-30 |
| Terms | https://circle.so/terms | 2026-09-30 | 2026-09-30 |
| Status page | https://status.circle.so/ | 2026-09-30 | 2026-09-30 |

## Subprocessors (20)

As its own list states them.

| Subprocessor | Purpose | Location | Listed since |
|---|---|---|---|
| 100MS | Audio and video infrastructure; Provides live video support (WebRTC, HLS) for sessions, events, and interactive video features. | USA | 2026-09-30 |
| [Amazon Web Services](https://thirdpartyindex.com/vendors/amazon-web-services.md) | Cloud hosting; Provides compute, storage, and infrastructure used to host Circle’s application and store customer data securely. | USA | 2026-09-30 |
| [Anthropic](https://thirdpartyindex.com/vendors/anthropic.md) | Processes prompts and user-submitted content when AI-enabled features are activated within Circle. | USA | 2026-09-30 |
| [Braintrust](https://thirdpartyindex.com/vendors/braintrust.md) | AI evaluation; Evaluates and monitors AI feature performance using sample inputs and outputs. | USA | 2026-09-30 |
| [Buildkite](https://thirdpartyindex.com/vendors/buildkite.md) | CI / CD pipelines; Runs CI/CD pipelines to build, test, and deploy Circle’s application. | USA | 2026-09-30 |
| [Clay](https://thirdpartyindex.com/vendors/clay.md) | Data enrichment and GTM workflows; Enriches contact and account data and supports go-to-market workflows. | USA | 2026-09-30 |
| [Cloudflare](https://thirdpartyindex.com/vendors/cloudflare.md) | Observability, monitoring, and security; Provides CDN, performance optimization, and security protection (including DDoS mitigation and traffic routing). | USA | 2026-09-30 |
| [dbt Cloud](https://thirdpartyindex.com/vendors/dbt-labs.md) | Data transformation and analytics engineering; Runs data transformation jobs on Circle’s analytics data. | USA | 2026-09-30 |
| [Fathom](https://thirdpartyindex.com/vendors/fathom.md) | Call transcripts; Records meetings and generates call transcripts, summaries, and action items. | USA | 2026-09-30 |
| [Forethought](https://thirdpartyindex.com/vendors/forethought-technologies.md) | AI support automation; Provides AI-powered support tools that process support tickets and help content. | USA | 2026-09-30 |
| [Google Cloud](https://thirdpartyindex.com/vendors/google-cloud.md) | Cloud hosting; Provides secure hosting services supporting part of Circle’s infrastructure. | USA | 2026-09-30 |
| [Hubspot](https://thirdpartyindex.com/vendors/hubspot.md) | CRM & marketing; Processes customer admin and prospect contact information for onboarding, lifecycle communication, and marketing operations. | USA | 2026-09-30 |
| [LiveKit](https://thirdpartyindex.com/vendors/livekit.md) | Audio and video infrastructure; Provides live video support (WebRTC, HLS) for sessions, events, and interactive video features. | USA | 2026-09-30 |
| [Mailgun](https://thirdpartyindex.com/vendors/mailgun.md) | Email delivery service; Sends marketing emails on behalf of Circle customers to Circle members through Email Hub (e.g., notifications, verification emails). | USA | 2026-09-30 |
| [New Relic](https://thirdpartyindex.com/vendors/new-relic.md) | Observability and monitoring; Provides application and infrastructure monitoring (APM, logs, metrics). | USA | 2026-09-30 |
| [OpenAI](https://thirdpartyindex.com/vendors/openai.md) | LLMs and other AI features; Processes prompts and user-submitted content when AI-enabled features are activated within Circle. | USA | 2026-09-30 |
| [RevenueCat](https://thirdpartyindex.com/vendors/revenuecat.md) | Finance and payments; Processes customer and member billing data, subscription events, related revenue analytics, and payment method tokens. | USA | 2026-09-30 |
| [Stripe](https://thirdpartyindex.com/vendors/stripe.md) | Finance and payments; Processes customer and member billing data, subscription payments, and payment method tokens. | USA | 2026-09-30 |
| [Zapier](https://thirdpartyindex.com/vendors/zapier.md) | Processes workflow-triggered data to automate internal operations and integrations (AI orchestration).; Workflows | USA | 2026-09-30 |
| [Zendesk](https://thirdpartyindex.com/vendors/zendesk.md) | Customer support; Processes customer contact information and support ticket content to provide troubleshooting and support. | USA | 2026-09-30 |

Read from ([evidence](https://thirdpartyindex.com/evidence/20162)). CSV: https://thirdpartyindex.com/vendors/circle-so/subprocessors.csv

## Compliance

As its trust center lists them.

- Audited: SOC 2 Type II ([evidence](https://thirdpartyindex.com/evidence/20163))
- Claimed: GDPR, CCPA/CPRA ([evidence](https://thirdpartyindex.com/evidence/20163))

## Listed as a subprocessor by (1)

Tracked vendors whose own subprocessor lists name it, and what they say they use it for.

- [Gorgias](https://thirdpartyindex.com/vendors/gorgias.md): Community hosting platform

## Service status

Incidents it reported on its own status page.

- Last 90 days: 4 reported incidents (0 major or critical, 0 minor, 4 with no impact stated)
- Typical time to resolve: 16 min
- 2026-09-01: app.circle.so is down (no impact stated)
- 2026-08-27: app.circle.so is down (no impact stated)
- 2026-08-20: app.circle.so is down (no impact stated)
- 2026-08-19: app.circle.so is down (no impact stated)
- 2026-05-28: Workflows stuck in "In progress" status (major)
- 2026-05-22: app.circle.so is down (no impact stated)
- 2026-05-20: app.circle.so is down (no impact stated)

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Third Party Index (https://thirdpartyindex.com) monitors vendors' public security and privacy documents and keeps each version as evidence. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/); vendors' own documents are theirs. API: https://thirdpartyindex.com/api