arxo-io

Arxo provides Law as Code infrastructure, writing statutes and regulations as executable models that run on case facts and return answers with the underlying provisions. The platform enables applications and AI agents to query versioned legal models, see where official text does not apply, and publish findings to a public register after notifying responsible offices.

arxo-io is listed with 2 APIs on the APIs.io network. Tagged areas include Company, LawTech, LegalTech, RegTech, and AI.

The arxo-io catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

arxo-io’s developer surface includes API reference, getting-started guide, documentation, engineering blog, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

24.8/100 emerging Agent 18/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 APIs

CompanyLawTechLegalTechRegTechAI

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 24.8/100 · emerging

Contract Quality 5.0 / 21

Developer Ergonomics 8.1 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.6 / 11

Contract Governance 2.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 18/100 · agent aware

Machine-Readable Contract 18 / 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 8 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

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):

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
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

11 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 0.0 — up to +20.0 composite points
Contract Quality scores 23.5 — up to +19.1 composite points
Operational Transparency scores 5.3 — up to +12.3 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/arxo-io/apis.yml: open an issue on github.com/api-evangelist/arxo-io 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 →

APIs 2

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

Arxo Law

Reference documentation for the Arxo Law platform.

arxo-io API

arxo-io API as documented publicly: 6 operations. Contract generated from the documentation by API Evangelist (2026-10-29); not the provider's own document.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Arxo Io Context

7 classes · 27 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

arxo-io API Rules

11 rules · 10 errors 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

GetApiDeadlineCaptureResponse

11 properties

JSON SCHEMA

PostApiDeadlineEvaluateRequest

3 properties

JSON SCHEMA

PostApiDeadlineEvaluateResponse

4 properties

JSON SCHEMA

PostApiDeadlineReplayResponse

2 properties

JSON SCHEMA

PostMcpRequest

4 properties

JSON SCHEMA

PostMcpResponse

5 properties

JSON SCHEMA

Security Posture 2

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

Arxo Io Authentication

0 schemes

SECURITY

Arxo Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Arxo Io Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: arxo-io
name: arxo-io
description: Arxo provides Law as Code infrastructure, writing statutes and regulations as executable models that run on case
  facts and return answers with the underlying provisions. The platform enables applications and AI agents to query versioned
  legal models, see where official text does not apply, and publish findings to a public register after notifying responsible
  offices.
url: https://artifacts.apis.io/arxo-io/apis.yml
image: https://www.arxo.io/og.png
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- Company
- LawTech
- LegalTech
- RegTech
- AI
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/arxo-io-rules.yml
- type: JSONLD
  url: json-ld/arxo-io-context.jsonld
- type: Vocabulary
  url: vocabulary/arxo-io-vocabulary.yml
- type: DataModel
  url: data-model/arxo-io-data-model.yml
- type: ErrorCatalog
  url: errors/arxo-io-problem-types.yml
- type: Conformance
  url: conformance/arxo-io-conformance.yml
- type: LLMsTxt
  url: llms/arxo-io-llms.txt
- type: Hosts
  url: hosts/arxo-io-hosts.yml
- type: Vendors
  url: vendors/arxo-io-vendors.yml
- type: SDKs
  url: packages/arxo-io-packages.yml
- type: Packages
  url: packages/arxo-io-packages.yml
- type: APIReference
  url: https://docs.arxo.io/reference/
- type: GettingStarted
  url: https://docs.arxo.io/guide/quickstart/
- type: DomainSecurity
  url: security/arxo-io-domain-security.yml
- type: Website
  url: https://arxo.io/
- type: Documentation
  url: https://docs.arxo.io/
- type: DeveloperPortal
  url: https://docs.arxo.io/
- type: Blog
  url: https://medium.com/@arxo
- type: GitHubOrganization
  url: https://github.com/arxohq
apis:
- name: Arxo Law
  description: Reference documentation for the Arxo Law platform.
  humanURL: https://docs.arxo.io/reference/
  aid: arxo-io:arxo-law
- aid: arxo-io:arxo-io-api
  name: arxo-io API
  description: 'arxo-io API as documented publicly: 6 operations. Contract generated from the documentation by API Evangelist
    (2026-10-29); not

    the provider''s own document.'
  humanURL: https://docs.arxo.io/build
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/arxo-io-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/arxo-io-get-api-deadline-capture-response-schema.json
  - type: JSONSchema
    url: json-schema/arxo-io-post-api-deadline-evaluate-response-schema.json
  - type: JSONSchema
    url: json-schema/arxo-io-post-api-deadline-evaluate-request-schema.json
  - type: JSONSchema
    url: json-schema/arxo-io-post-api-deadline-replay-response-schema.json
  - type: JSONSchema
    url: json-schema/arxo-io-post-mcp-request-schema.json
  - type: JSONSchema
    url: json-schema/arxo-io-post-mcp-response-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation is public but no machine‑readable OpenAPI/GraphQL/AsyncAPI contract is provided.
  evidence:
  - url: https://docs.arxo.io/reference/
    status: 200
  checked: '2026-10-29'
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 29
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

arxo-io API — frequently asked questions

Does arxo-io have an API?

Yes. APIs.io lists 2 APIs from arxo-io, including Arxo Law and arxo-io API.

Is there an OpenAPI specification for the arxo-io API?

Yes. APIs.io indexes 1 OpenAPI specification for arxo-io, each linked for download from this page.

How do I authenticate with the arxo-io API?

arxo-io documents its authentication (0 schemes). The details are profiled on APIs.io as Arxo Io Authentication.

Is the arxo-io API ready for AI agents?

arxo-io has a Kin Score of 24.8 out of 100 (emerging) and an Agent Readiness score of 17.6 (agent-aware), scored by API Evangelist on 2026-10-31.

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