Atomic Semi is a semiconductor company founded in 2023 by Sam Zeloof and Jim Keller, now operating publicly as fab2 (atomicsemi.com redirects to fab2.com). It designs and manufactures semiconductor fabrication equipment and the fabs that house it — pumps, valves, sensors, actuators, chambers, heaters, gas lines and robots — with the stated goal of mass-producing small, software-defined chip fabs, a "fab fab". It runs a 120K sq ft chip fab in Austin TX (HQ), a 30K sq ft fab fab in Lockhart TX, and the original 25K sq ft garage fab in San Francisco. Its one software product, Studio (formerly Atomic Studio), is an in-browser collaborative EDA for schematic capture, layout and simulation, used internally rather than sold as a developer platform. The company publishes no API, SDK, developer portal or machine-readable specification.
Atomic Semi is profiled on the APIs.io network. Tagged areas include Company, Semiconductors, Hardware, Manufacturing, and Electronic Design Automation.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for
this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero:
never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and
several others — scorable at all.
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aid: atomic-semi
name: Atomic Semi
description: Atomic Semi is a semiconductor company founded in 2023 by Sam Zeloof and Jim Keller, now operating publicly as
fab2 (atomicsemi.com redirects to fab2.com). It designs and manufactures semiconductor fabrication equipment and the fabs
that house it — pumps, valves, sensors, actuators, chambers, heaters, gas lines and robots — with the stated goal of mass-producing
small, software-defined chip fabs, a "fab fab". It runs a 120K sq ft chip fab in Austin TX (HQ), a 30K sq ft fab fab in
Lockhart TX, and the original 25K sq ft garage fab in San Francisco. Its one software product, Studio (formerly Atomic Studio),
is an in-browser collaborative EDA for schematic capture, layout and simulation, used internally rather than sold as a developer
platform. The company publishes no API, SDK, developer portal or machine-readable specification.
url: https://raw.githubusercontent.com/api-evangelist/atomic-semi/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
deliveryModel:
model: unknown
open_source: false
commercial: false
callable_host: false
label: Delivery model not determined — needs a product licence on record
confidence: low
source:
- none
generated: '2026-08-28'
method: derived
accessModel:
pricing: unknown
onboarding: unknown
trial: false
try_now: false
public: false
label: Unknown
confidence: low
source:
- security
generated: '2026-09-02'
method: derived
specificationVersion: '0.23'
created: '2026-08-06'
modified: '2026-08-06'
tags:
- Company
- Semiconductors
- Hardware
- Manufacturing
- Electronic Design Automation
- Chip Design
- Deep Tech
apis: []
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
- FN: APIs.json
email: info@apis.io
common:
- type: DomainSecurity
url: security/atomic-semi-domain-security.yml
- type: Website
url: https://fab2.com/
- type: About
url: https://fab2.com/about/
- type: Careers
url: https://jobs.ashbyhq.com/fab2
- type: SecondaryMarket
url: https://www.hiive.com/securities/atomic-semi-stock
x-enrichment:
date: '2026-08-06'
status: minimal
artifacts_added: 1
pass: local-v1
x-coverage:
state: none
reason: no-developer-program
detail: atomicsemi.com 301s to fab2.com, a three-page marketing site (root, /about/, /careers/) whose own sitemap.xml lists
no developer surface at all; the company makes chip-fab hardware, its one software product (the Studio in-browser EDA)
is used internally rather than sold, and its GitHub org holds only forks of upstream open-source EDA tools with no first-party
code.
evidence:
- url: https://atomicsemi.com/
status: 301
- url: https://fab2.com/sitemap.xml
status: 200
- url: https://fab2.com/openapi.json
status: 404
- url: https://fab2.com/llms.txt
status: 404
- url: https://fab2.com/.well-known/agent-card.json
status: 404
- url: https://api.github.com/orgs/AtomicSemi/repos
status: 200
checked: '2026-08-06'
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