ArbiLex

ArbiLex is a legal-fintech startup founded at the Harvard Innovation Labs in 2018 by Isabel Yang that brings AI and predictive analytics to high-stakes international arbitration and litigation finance. Its Bayesian machine learning and NLP models — trained on a dataset of over nine million cases — produce empirical, explainable case ratings that help counsel quantify uncertainty, reduce errors, and value claims. ArbiLex also operates the ArbiLex Funding Exchange (AFX), a data-driven marketplace pairing AI-rated cases with litigation-finance capital. Added to the API Evangelist network as a portfolio company of 500 Global; no public developer API surface was found at time of enrichment.

ArbiLex is profiled on the APIs.io network. Tagged areas include Company, Legal, Legal Tech, Litigation Finance, and Arbitration.

🌐 Visit website 📡 Source on GitHub

3.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

0 APIs

Company Legal Legal TechLitigation FinanceArbitration Legal Analytics Artificial Intelligence Predictive Analytics Fintech

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 3.3/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 0.8 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/arbilex: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Arbilex Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 3

The organization behind the API

Website

Website

LinkedIn

Crunchbase

Crunchbase

Source (apis.yml)

aid: arbilex
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/arbilex.png
name: ArbiLex
description: ArbiLex is a legal-fintech startup founded at the Harvard Innovation Labs in 2018 by Isabel Yang that brings
  AI and predictive analytics to high-stakes international arbitration and litigation finance. Its Bayesian machine learning
  and NLP models — trained on a dataset of over nine million cases — produce empirical, explainable case ratings that help
  counsel quantify uncertainty, reduce errors, and value claims. ArbiLex also operates the ArbiLex Funding Exchange (AFX),
  a data-driven marketplace pairing AI-rated cases with litigation-finance capital. Added to the API Evangelist network as
  a portfolio company of 500 Global; no public developer API surface was found at time of enrichment.
url: https://raw.githubusercontent.com/api-evangelist/arbilex/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Legal
- Legal Tech
- Litigation Finance
- Arbitration
- Legal Analytics
- Artificial Intelligence
- Predictive Analytics
- Fintech
tags_raw:
- Company
- Legal
- LegalTech
- Litigation Finance
- Arbitration
- Legal Analytics
- Artificial Intelligence
- Predictive Analytics
- Fintech
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/arbilex-domain-security.yml
- type: Website
  url: https://arbilex.co
- type: LinkedIn
  url: https://www.linkedin.com/company/arbilex
- type: Crunchbase
  url: https://www.crunchbase.com/organization/arbilex
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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