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