Builder.ai was a London-based AI-assisted software development platform, originally founded in 2016 as Engineer.ai by Sachin Dev Duggal, that let customers assemble custom web and mobile applications from reusable building blocks orchestrated by an AI assistant branded "Natasha." Positioned as a no-code/low-code "human-assisted AI" app factory, it raised large rounds from investors including Insight Partners, Microsoft, the Qatar Investment Authority and SoftBank's DeepCore. The company collapsed into insolvency and entered administration in 2025 amid a revenue-restatement controversy, and its public web and developer surfaces are no longer operational. This profile is retained in the API Evangelist network as a portfolio-lead record; no live API, developer portal, or documentation could be verified during enrichment.
Builder.ai is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Application Development, No-Code, and Low-Code.
aid: builderai
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: []
generated: '2026-07-22'
method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/builderai.png
name: Builder.ai
description: Builder.ai was a London-based AI-assisted software development platform, originally founded in 2016 as Engineer.ai
by Sachin Dev Duggal, that let customers assemble custom web and mobile applications from reusable building blocks orchestrated
by an AI assistant branded "Natasha." Positioned as a no-code/low-code "human-assisted AI" app factory, it raised large
rounds from investors including Insight Partners, Microsoft, the Qatar Investment Authority and SoftBank's DeepCore. The
company collapsed into insolvency and entered administration in 2025 amid a revenue-restatement controversy, and its public
web and developer surfaces are no longer operational. This profile is retained in the API Evangelist network as a portfolio-lead
record; no live API, developer portal, or documentation could be verified during enrichment.
url: https://raw.githubusercontent.com/api-evangelist/builderai/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Artificial Intelligence
- Application Development
- No-Code
- Low-Code
- App Builder
- Software Development
- Defunct
tags_raw:
- Company
- Artificial Intelligence
- Application Development
- No Code
- Low Code
- App Builder
- Software Development
- Defunct
apis: []
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
- FN: APIs.json
email: info@apis.io
common:
- type: DomainSecurity
url: security/builderai-domain-security.yml
- type: Website
url: https://www.builder.ai/
x-enrichment:
date: '2026-07-19'
status: backfilled
pass: local-v1
note: backfilled from .gitignore signal + verified work evidence
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