Does Mesmer use Vercel?
Yes
We hold strong evidence for this.
- The company names it in its own subprocessor list, a statement that this vendor handles its customers' data.
- Its script, DNS record or job board was loaded on the company's live website.
How we know
About Mesmer
Mesmer maps a company's engineering work to identify its largest bottleneck and implements fixes directly in the codebase. It serves engineering teams.
Summarized from its homepage on 9 Nov 2026.
What else Mesmer uses
Mesmer has evidence for 17 vendors. The strongest:
Amazon Web Services
Anthropic
ClickHouse
Dash0
Google Cloud
LangChain
Microsoft Azure
OpenAI
PostHog
Other companies using Vercel
Check any company's vendors in seconds
See Mesmer's full stack with a source for every vendor, and ask the same question about any company from the API, Claude or your browser.
- Every company and vendor, with its public source
- 100 API calls a month, plus MCP and the Chrome extension
- Work email only. No card, no sales call