LegalOS

LegalOS is an AI-native U.S. immigration law practice based in San Francisco and backed by Y Combinator (Winter 2026 batch). Founded by Matthew Asir (CEO), Rachel Asir (COO) and Claire Jutabha (CTO), the company pairs proprietary legal software with licensed immigration attorneys to prepare employment-based visa and green-card petitions — H-1B, L-1A, L-1B, O-1 and TN visas, plus EB-1A, EB-1C and EB-2 NIW green cards. AI agents draft petition narratives, assemble supporting evidence and anticipate USCIS objections, with every filing reviewed by a licensed attorney before submission. LegalOS is delivered as a service through a customer web application at app.legalos.ai; as of this profile it publishes no public developer API, SDKs, developer portal or machine-readable API artifacts.

LegalOS is profiled on the APIs.io network. Tagged areas include Company, Legal, Legal Technology, Immigration, and Artificial Intelligence.

LegalOS’s developer surface includes engineering blog, support, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

16.5/100 emerging ▬ flat Agent 4/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyLegalLegal TechnologyImmigrationArtificial IntelligenceProfessional ServicesVisasCompliance

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 16.5/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 8.4 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 4/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/legalos: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

Login

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Access & Security 2

Authentication, authorization, and security posture

Compliance

Compliance

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 8

The organization behind the API

Website

Blog

About

Careers

Twitter

LinkedIn

Facebook

Facebook

Instagram

Instagram

Scroll for all 8

Source (apis.yml)

aid: legalos
name: LegalOS
description: LegalOS is an AI-native U.S. immigration law practice based in San Francisco and backed by Y Combinator (Winter
  2026 batch). Founded by Matthew Asir (CEO), Rachel Asir (COO) and Claire Jutabha (CTO), the company pairs proprietary legal
  software with licensed immigration attorneys to prepare employment-based visa and green-card petitions — H-1B, L-1A, L-1B,
  O-1 and TN visas, plus EB-1A, EB-1C and EB-2 NIW green cards. AI agents draft petition narratives, assemble supporting evidence
  and anticipate USCIS objections, with every filing reviewed by a licensed attorney before submission. LegalOS is delivered
  as a service through a customer web application at app.legalos.ai; as of this profile it publishes no public developer API,
  SDKs, developer portal or machine-readable API artifacts.
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://cdn.prod.website-files.com/667d1a68c2779a28ef89b338/697dc2de49d014db1c617fe9_OG%201.webp
url: https://raw.githubusercontent.com/api-evangelist/legalos/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: profiled
x-tier-reason: no-public-api
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Legal
- Legal Technology
- Immigration
- Artificial Intelligence
- Professional Services
- Visas
- Compliance
apis: []
common:
- type: Website
  url: https://www.legalos.ai/
- type: Blog
  url: https://www.legalos.ai/blog
- type: Login
  url: https://app.legalos.ai
- type: Support
  url: https://www.legalos.ai/contact-us
- type: TermsOfService
  url: https://www.legalos.ai/terms-of-service-legalos
- type: PrivacyPolicy
  url: https://www.legalos.ai/privacy
- type: About
  url: https://www.legalos.ai/about-us
- type: Careers
  url: https://www.legalos.ai/careers
- type: Compliance
  url: https://www.legalos.ai/
- type: Conformance
  url: conformance/legalos-conformance.yml
- type: WellKnown
  url: well-known/legalos-well-known.yml
- type: DomainSecurity
  url: security/legalos-domain-security.yml
- type: LLMsTxt
  url: llms/legalos-llms.txt
- type: Twitter
  url: https://x.com/legalosai
- type: LinkedIn
  url: https://www.linkedin.com/company/legalosai/
- type: Facebook
  url: https://www.facebook.com/legalosai/
- type: Instagram
  url: https://www.instagram.com/legalosai
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence