Contract Guard / Autonomous Utility Factory

Contract Guard provides a deterministic JSON Schema validation API for software and AI workflows. It returns exact validation violations and optional conservative type normalization. The service is operated by WOODS HOLDING GROUP LLC and is currently in an experimental live state with billing disabled. It offers a public demo, OpenAPI 3.1 spec, MCP endpoint, ARD manifest, Postman collection, and product registry.

Contract Guard / Autonomous Utility Factory is listed with 1 API on the APIs.io network. Tagged areas include JSON Validation and AI Trust.

The Contract Guard / Autonomous Utility Factory catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Contract Guard / Autonomous Utility Factory’s developer surface includes CLI, authentication, getting-started guide, documentation, API reference, pricing, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

44.0/100 developing ▬ flat Agent 29/100 agent ready Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

1 API 1 MCP Servers

JSON ValidationAI Trust

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 44.0/100 · developing

Contract Quality 8.3 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 9.8 / 17

Operational Transparency 0.9 / 11

Contract Governance 3.2 / 10

Discoverability 5.4 / 9

Regulatory Posture 3.2 / 15

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 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 5 / 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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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/contract-guard: 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 →

APIs 1

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

Contract Guard API

Deterministic JSON Schema validation API with explicit violations.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Contract Guard / Autonomous Utility Factory MCP Server

Remote MCP server at contract-guard-production.up.railway.app.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Contract Guard Plans Pricing

4 plans

PLANS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Contract Guard Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Contract Guard / Autonomous Utility Factory API Rules

7 rules · 5 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Contract Guard Openapi Overlay

0 actions · update

DERIVED

Security Posture 3

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

Contract Guard Authentication

1 scheme

SECURITY

Contract Guard Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Contract Guard Trust Center

SOC 2, HIPAA, GDPR

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Contract Guard Agentic Access

10 operations · 6 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

LLMsTxt

MCPServer

WellKnown

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Webhooks

ErrorCatalog

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

CLI

CLI

Postman

Postman

Access & Security 4

Authentication, authorization, and security posture

Compliance

Authentication

TrustCenter

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

Overlay

Overlay

Hosts

Hosts

Health

Health

Source (apis.yml)

aid: contract-guard
name: Contract Guard / Autonomous Utility Factory
description: Contract Guard provides a deterministic JSON Schema validation API for software and AI workflows. It returns
  exact validation violations and optional conservative type normalization. The service is operated by WOODS HOLDING GROUP
  LLC and is currently in an experimental live state with billing disabled. It offers a public demo, OpenAPI 3.1 spec, MCP
  endpoint, ARD manifest, Postman collection, and product registry.
url: https://raw.githubusercontent.com/api-evangelist/contract-guard/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-02 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-02'
modified: '2026-10-02'
tags:
- JSON Validation
- AI Trust
tags_raw:
- JSON Validation
- API
- AI Trust
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/contract-guard-agentic-access.yml
- type: Plans
  url: plans/contract-guard-plans-pricing.yml
- type: Spectral
  url: rules/contract-guard-rules.yml
- type: Webhooks
  url: asyncapi/contract-guard-webhooks.yml
- type: CLI
  url: cli/contract-guard-cli.yml
- type: Compliance
  url: https://trust.railway.com/
- type: Authentication
  url: authentication/contract-guard-authentication.yml
- type: ErrorCatalog
  url: errors/contract-guard-problem-types.yml
- type: Conformance
  url: conformance/contract-guard-conformance.yml
- type: Overlay
  url: overlays/contract-guard-openapi-overlay.yml
- type: LLMsTxt
  url: llms/contract-guard-llms.txt
- type: MCPServer
  url: mcp/contract-guard-mcp.yml
- type: WellKnown
  url: well-known/contract-guard-well-known.yml
- type: Hosts
  url: hosts/contract-guard-hosts.yml
- type: GettingStarted
  url: https://docs.railway.com/quick-start
- type: TrustCenter
  url: security/contract-guard-trust-center.yml
- type: DomainSecurity
  url: security/contract-guard-domain-security.yml
- type: Website
  url: https://contract-guard-production.up.railway.app/
- type: Documentation
  url: https://contract-guard-production.up.railway.app/openapi.json
- type: APIReference
  url: https://contract-guard-production.up.railway.app/mcp
- type: Postman
  url: https://contract-guard-production.up.railway.app/postman_collection.json
- type: Pricing
  url: https://contract-guard-production.up.railway.app/v1/products
- type: Health
  url: https://contract-guard-production.up.railway.app/healthz
apis:
- name: Contract Guard API
  description: Deterministic JSON Schema validation API with explicit violations.
  humanURL: https://contract-guard-production.up.railway.app/openapi.json
  baseURL: https://contract-guard-production.up.railway.app
  aid: contract-guard:contract-guard-api
x-submission-notes: 'Deterministic JSON Schema validation API returning exact violations. | Listed on Kin''s call 2026-10-02
  despite: Working API but hosted only on a railway.app subdomain with no company or domain behind it; no stable slug basis.'
x-submission-probe: root 200; apis.json 200 (1 api); OpenAPI 3.1.0 10 paths; llms.txt 200; 404 probe 404
x-submitted-by: (GitHub issue author) (github, 2026-09-30)
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-02'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://contract-guard-production.up.railway.app/openapi.json
    status: null
  - url: https://contract-guard-production.up.railway.app/mcp
    status: 401
x-enrichment:
  date: '2026-10-02'
  status: enriched
  artifacts_added: 19
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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