DPA Exhibit A · Version 1.5 · Effective September 19, 2026

Subprocessors.
Every provider, named and reviewed.

Subprocessors handle information on Helmsted’s behalf for the services identified below, under required contractual protections. Retention depends on the service and configuration. Independently engaged professionals are separate recipients when serving their own client engagements. The DPA governs oversight, responsibility, and changes.

Providers

16 listed · ZDR marks Zero Data Retention
Vercel Inc.

Application delivery and AI request routing; request/response content and metadata.

Primary service location: United States.vercel.com
Render Services, Inc.

Application and agent hosting; documents, context, outputs, and session information.

Primary service location: United States.render.com
Google LLC (Google Cloud)

Configured compute and infrastructure; information depends on workload.

Primary service location: United States.cloud.google.com
Supabase, Inc.

Database, authentication, and sessions; accounts, records, permissions, and audit information.

Primary service location: United States (US West, Oregon).supabase.com
Anthropic, PBCZDR

AI processing of submitted task information under the required no-training and zero-retention arrangement.

Primary service location: United States.trust.anthropic.com
OpenAI, L.L.C.ZDR

AI processing of submitted task information under the required no-training and zero-retention arrangement.

Primary service location: United States.openai.com
xAI Corp.ZDR

AI processing of submitted task information where enabled, under the required no-training and zero-retention arrangement.

Primary service location: United States.x.ai
TypeSafe AI, Inc.ZDR

AI processing of submitted task information under the required no-training and zero-retention arrangement.

Primary service location: United States.typesafe.ai
Hyperdoc Inc. (d/b/a Recall.ai)

Meeting capture where enabled; meeting audio, video, transcripts, and related metadata, configured for no media retention by the provider.

Primary service location: United States.security.recall.ai
FoundryLabs, Inc. (d/b/a E2B)

Execution environments; documents and intermediate outputs in active or paused workflows.

Primary service location: United States.trust.e2b.dev
Cloudflare, Inc.

Object storage and delivery; documents and generated artifacts.

Primary service location: Eastern North America.cloudflare.com
Amazon Web Services, Inc.

Configured feed staging and related infrastructure.

Primary service location: United States (US East, Ohio).aws.amazon.com
Inngest, Inc.

Workflow orchestration; event payloads and execution records.

Primary service location: United States.inngest.com
Plus Five Five, Inc. (d/b/a Resend)

Email delivery; recipient details, message content, and delivery records.

Primary service location: United States.resend.com
Plaid Inc.

Authorized account connections and financial information under applicable consents and provider terms. Helmsted does not store financial-institution passwords through this service.

Primary service location: United States.plaid.com
SideGuide Technologies, Inc. (d/b/a Firecrawl)

Public-web retrieval; submitted URLs and queries. Client information requires authorization for that processing.

Primary service location: United States.firecrawl.dev

Notes for reviewing firms

Listed primary service locations are not an exclusive processing or support residency guarantee. Processing remains subject to the governing DPA.

AI processing follows the required no-training and zero-retention arrangements. Helmsted’s stored records, paused sandboxes and workflow histories have separate retention treatment.

This versioned list is Exhibit A of the DPA. An Order-date copy accompanies the executed Order; later changes follow the DPA. Contact security@helmsted.ai.

Changelog

1.5 (September 19, 2026): Added Recall.ai (meeting capture) and TypeSafe AI, Inc. (AI processing). Vercel description now includes AI request routing. Change terms follow DPA v1.7.

1.4 (September 11, 2026): Clarifies service scope and retention; preserves the 14-provider inventory and governing amendment requirements.

1.3 (August 25, 2026): Added Amazon Web Services for secure staging of custodial data feeds. Current 14-vendor list in effect.

1.2 (July 24, 2026): 13-vendor list in effect.

1.1 (June 27, 2026): Data Processing Addendum updated to the 13-vendor list.

1.0 (April 27, 2026): First published list (9 vendors). Fly.io was later replaced by Render Services. The Anthropic arrangement was upgraded from an enterprise no-training agreement to Zero Data Retention.