Manifest Law

Manifest Law operates ManifestOS, a communication and case management platform for the legal industry, and is backed by Menlo Ventures. The platform exposes a standards-based OAuth 2.0 / OpenID Connect authorization server at app.manifestlaw.com, with an `api` scope for programmatic access and dynamic OAuth client management (`oauth_clients:manage`). This profile was enriched by the API Evangelist pipeline from Manifest Law's public discovery documents; no OpenAPI specification was published at the time of enrichment.

Manifest Law is listed with 1 API on the APIs.io network. Tagged areas include Company, Legal, Legal Tech, Case Management, and Communications.

Manifest Law’s developer surface includes engineering blog, authentication, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

15.4/100 emerging ▬ flat Agent 11/100 agent aware Front door AI 2/6 trace Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API

Company Legal Legal Tech Case Management Communications OAuth Authentication

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 15.4/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 2.4 / 17

Access Clarity 1.1 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 6.2 / 9

Regulatory Posture 4.0 / 15

Agent readiness — 11/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0

11 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 6.6 — up to +18.7 composite points
Developer Ergonomics scores 14.3 — up to +17.1 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/manifest-law/apis.yml: open an issue on github.com/api-evangelist/manifest-law to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OAuth

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

ManifestOS API

Programmatic surface behind ManifestOS, gated by the Manifest Law OAuth 2.0 / OpenID Connect authorization server (issuer https://app.manifestlaw.com/api/auth, `api` scope).

Security Posture 2

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

Manifest Law Authentication

oauth2/openIdConnect · 2 schemes

SECURITY

Manifest Law Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Manifest Law Scopes

7 scopes · authorizationCode/clientCredentials/refreshToken

7 scopes

SCOPES

Resources

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 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Company 2

The organization behind the API

Blog

Blog

Website

Website

Source (apis.yml)

aid: manifest-law
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - scopes
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/manifest-law.png
name: Manifest Law
description: Manifest Law operates ManifestOS, a communication and case management platform for the legal industry, and is
  backed by Menlo Ventures. The platform exposes a standards-based OAuth 2.0 / OpenID Connect authorization server at app.manifestlaw.com,
  with an `api` scope for programmatic access and dynamic OAuth client management (`oauth_clients:manage`). This profile was
  enriched by the API Evangelist pipeline from Manifest Law's public discovery documents; no OpenAPI specification was published
  at the time of enrichment.
url: https://raw.githubusercontent.com/api-evangelist/manifest-law/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- menlo-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Legal
- Legal Tech
- Case Management
- Communications
- OAuth
- Authentication
tags_raw:
- Company
- Legal
- Legal Tech
- Case Management
- Communication
- OAuth
- Authentication
apis:
- name: ManifestOS API
  description: Programmatic surface behind ManifestOS, gated by the Manifest Law OAuth 2.0 / OpenID Connect authorization
    server (issuer https://app.manifestlaw.com/api/auth, `api` scope).
  humanURL: https://app.manifestlaw.com
  baseURL: https://app.manifestlaw.com/api
  properties:
  - type: Authentication
    url: authentication/manifest-law-authentication.yml
  - type: OAuthScopes
    url: scopes/manifest-law-scopes.yml
  - type: WellKnown
    url: well-known/manifest-law-well-known.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://manifestlaw.com/blog
  type: Blog
- type: Authentication
  url: authentication/manifest-law-authentication.yml
- type: OAuthScopes
  url: scopes/manifest-law-scopes.yml
- type: WellKnown
  url: well-known/manifest-law-well-known.yml
- type: Conformance
  url: conformance/manifest-law-conformance.yml
- type: DomainSecurity
  url: security/manifest-law-domain-security.yml
- type: LLMsTxt
  url: llms/manifest-law-llms.txt
- type: Login
  url: https://app.manifestlaw.com
- type: Website
  url: https://manifestlaw.com
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 8
  pass: local-v1
x-tags-removed:
- OpenID Connect

Manifest Law API — frequently asked questions

Does Manifest Law have an API?

Yes. APIs.io lists 1 API from Manifest Law, including ManifestOS API.

How do I authenticate with the Manifest Law API?

Manifest Law documents its authentication (oauth2/openIdConnect · 2 schemes). The details are profiled on APIs.io as Manifest Law Authentication.

Is the Manifest Law API ready for AI agents?

Manifest Law has a Kin Score of 15.4 out of 100 (emerging) and an Agent Readiness score of 10.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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