Tinfoil

San Francisco, CA, United States

Tinfoil is a security research lab building an AI cloud for private, verifiable computation.

Tinfoil, based in San Francisco, CA, United States, has 4 investors on file, among them Pelion Venture Partners, Rain Capital and Ritual Capital. Its latest round on record is Seed, 1 Apr 2025. Its site was last checked 13 Nov 2026: site answers.

tinfoil.sh

Funding

1 round on record

Latest roundSeed1 Apr 2025

Since that round1 year 7 monthsno later round on record

Investors in its rounds11 with a VCinfo profile

Apr 2025SeedLed by Y Combinator

Round sizes and total raised are on Fundup AI, our sister product for funding data.

Investors

4 investors on file

Investor	Evidence	Type
Pelion Venture Partners	Portfolio page	Venture capital
Rain Capital	Portfolio page	Venture capital
Ritual Capital	Portfolio page	Venture capital
Y Combinator	Page + round	Accelerator

In the news

1 headline naming Tinfoil

11 Nov 2026

Tinfoil (YC P25) is hiring an applied AI security engineer in San Franciscoycombinator.comPeople

Each headline is matched with evidence and opens on its outlet. Some come through the GDELT Project.

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

At a glance

Latest round: Seed, 1 Apr 2025
Investors on file: 4
Founded: 2024
Employees: 1-10
Headquarters: San Francisco, CA, United States
Hiring: Careers page
Site: Answers
Last checked: 13 Nov 2026

Company data by Fundup AI.

Tech stack by StrataDB

Tinfoil runs on 17 tools StrataDB has found, including:

CloudflareAmazon Web ServicesClerkExaGoogleGoogle WorkspaceNVIDIANext.js

See the full stack, with sources, on StrataDB

Backed by the same investors

Companies sharing two or more investors with Tinfoil.

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Aemon2 shared

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Anthrogen2 shared

Anto2 shared

Atum Works2 shared

Get this company as JSON

GET /v1/companies/tinfoil.sh
GET /v1/companies/tinfoil.sh/investors
GET /v1/companies/tinfoil.sh/news

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AlertsFollow 5 investors for portfolio and fund changes

VCinfo API

$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/companies/tinfoil.sh/investors

# also
GET /v1/companies/tinfoil.sh
GET /v1/companies/tinfoil.sh/news

The same data as an MCP server for Claude, Cursor and other AI tools. Set up MCP · Docs · Pricing