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Custos AI tech stack

custosai.eu

Custos reads business emails, looks up information in a company's existing systems, takes actions like drafting quotes or creating orders, and replies. It serves European businesses that use Microsoft 365 or Google Workspace mailboxes along with tools such as Shopify, Picqer, or Moneybird.

Summarized from its homepage on 8 Nov 2026.

The Custos AI homepage

Vendors of Custos AI and the evidence for each

Custos AI declares 5 subprocessors, including AI providers Anthropic, OpenAI.

VendorCategoryEvidenceLevel
VercelCloud and infrastructureConfirmed
Subprocessor listNamed as Vercel, Inc. · Processes data for the company8 Nov 2026Source
Privacy policyNamed as Vercel, Inc. · Processes data for the company8 Nov 2026Source
Websiteheader: x-vercel-id: pdx1::fra1::bkbcs-1794172501616-384fb5088 Nov 2026Source
Companies using Vercel
Lettermint B.V.Email and communicationsConfirmed
Subprocessor listNamed as Lettermint · Processes data for the company8 Nov 2026Source
Privacy policyNamed as Lettermint · Processes data for the company8 Nov 2026Source
Companies using Lettermint B.V.
StripePaymentsConfirmed
Subprocessor listNamed as Stripe Payments Europe · Processes data for the company8 Nov 2026Source
Privacy policyNamed as Stripe Payments Europe, Ltd. · Processes data for the company8 Nov 2026Source
Privacy policyNamed as Stripe, Inc. · Processes data for the company8 Nov 2026Source
Companies using Stripe
SupabaseCloud and infrastructureConfirmed
Subprocessor listProcesses data for the company8 Nov 2026Source
Privacy policyProcesses data for the company8 Nov 2026Source
Companies using Supabase
TransIP B.V.Confirmed
Subprocessor listProcesses data for the company8 Nov 2026Source
CloudflareCloud and infrastructureLikely
Websiteheader: cf-ray: a5779736eed7de85-SEA8 Nov 2026Source
Companies using Cloudflare
Next.jsDeveloper toolsLikely
Websitescript: /_next/static/chunks/0zmgr57zc3wlc.js?dpl=dpl_53w8LhKG8 Nov 2026Source
Companies using Next.js
TransIP B.V.Likely
Privacy policyProcesses data for the company8 Nov 2026Source
AnthropicAI and LLM providersPossible
Privacy policy8 Nov 2026Source
Companies using Anthropic
GoogleCloud and infrastructurePossible
Privacy policy8 Nov 2026Source
Companies using Google

1 more vendor

See Custos AI's full stack and the source for every claim.

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Questions about Custos AI

Does Custos AI use Anthropic?Does Custos AI use OpenAI?

Vendor's own statement, retrieved from the source URL on the date shown. StrataDB does not verify the underlying claim. Data sources.

See Custos AI's full stack

Every vendor with its source and date, and an alert when Custos AI adds or drops one. The same lookup works for any company.

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