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Skip to main content Last Updated: August 12, 2026 This page lists the sub-processors that Blacksmith engages to process Customer Personal Data on behalf of Customers and to support the delivery of our Services as defined in the Data Processing Addendum. The sub-processors relevant to a particular Customer depend on the specific Services they use. Blacksmith maintains an up-to-date list of all sub-processors below, with a description of their processing activities and the locations where data is processed. Customers may subscribe to updates about new or replacement sub-processors via the RSS feed on this page. Blacksmith’s sub-processors Subprocessor Applicable Services Processing Activities Location Anthropic PBC AI Features AI model provider United States BaseTen Labs, Inc. AI Features AI model provider United States Grok, Inc. (xAI) AI Features AI model provider United States OpenAI Foundation AI Features AI model provider United States Mistral AI SAS AI Features AI model provider European Union Daytona Platforms Inc. AI Features Sandbox environments European Union Turbopuffer Inc. AI Features Embedding vector storage European Union Braintrust Data, Inc. AI Features LLM-trace observability United States Functional Software Inc (Sentry) All services Error monitoring and crash reporting United States Axiom, Inc. All services Logging and metrics United States PostHog, Inc. All services Product analytics, feature flags United States Vercel Inc. All services Frontend hosting and edge delivery European Union Pylon Labs, Inc. All services Customer service and technical support United States Plus Five Five, Inc. (Resend) All services Outbound email European Union Astrodon Corporation (Loops) All services Outbound email United States Cloudflare, Inc. All services DNS and object storage United States, European Union Amazon Web Services, Inc. All services Cloud hosting United States, European Union PlanetScale, Inc. All services Application database hosting European Union ClickHouse, Inc. All services Observability and analytics database hosting United States, European Union Redis Inc All services Queueing, streaming, and caching United States, European Union PhoenixNAP LLC All services Datacenter provider United States, European Union Hetzner Online GmbH All services Datacenter provider European Union Summit Hosting LLC All services Datacenter provider United States Megaport (Latitude.sh) All services Datacenter provider United States MacWeb All services Datacenter provider United States Salesforce (Slack) All services Collaboration; customer service and technical support United States For questions about our sub-processors, contact us at [email protected]. Changelog Subscribe to this changelog via the RSS feed to be notified about new or replacement sub-processors. Applicable services updated Updated applicable services for Anthropic, BaseTen Labs, Grok, OpenAI Foundation, Mistral, Daytona, Turbopuffer, and Braintrust to AI Features. Simplified OpenAI Foundation and Mistral processing activities to AI model provider. New sub-processor added Added MacWeb (datacenter provider for All services). OpenAI usage updated Added Codesmith as an applicable service and AI model provider as a processing activity for OpenAI Foundation. Location corrections Updated the processing location for Vercel Inc., Plus Five Five, Inc. (Resend), and Daytona Platforms Inc. to European Union. New sub-processors added Added BaseTen Labs, Inc. (AI model provider for Codesmith) and OpenAI Foundation (test failure log embeddings for Test Failure Summaries). Initial publication Published the initial list of Blacksmith sub-processors.