aid: deepinquiry
name: DeepInquiry Verified Facts API (Machine Accountability Corp)
image: https://www.deepinquiry.ai/opengraph-image?01749e82229af5bc
description: DeepInquiry Verified Facts API (Machine Accountability Corp) provides a curated, verifiable fact database accessible via a RESTful
  API. Each fact is cross‑checked against multiple sources, cited, dated, and cryptographically signed, offering users trustworthy data for applications
  ranging from research to product development. The service includes tiered pricing, API key authentication, and detailed usage limits, ensuring
  both free access for low‑volume needs and scalable plans for enterprise integration.
url: https://raw.githubusercontent.com/api-evangelist/deepinquiry/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-18 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-17'
modified: '2026-10-17'
tags:
- Company
- API
- Facts
- Verification
- Data
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/deepinquiry-agentic-access.yml
- type: RateLimits
  url: rate-limits/deepinquiry-rate-limits.yml
- type: Plans
  url: plans/deepinquiry-plans-pricing.yml
- type: Spectral
  url: rules/deepinquiry-rules.yml
- type: JSONLD
  url: json-ld/deepinquiry-context.jsonld
- type: Vocabulary
  url: vocabulary/deepinquiry-vocabulary.yml
- type: DataModel
  url: data-model/deepinquiry-data-model.yml
- type: Conventions
  url: conventions/deepinquiry-conventions.yml
- type: Authentication
  url: authentication/deepinquiry-authentication.yml
- type: ErrorCatalog
  url: errors/deepinquiry-problem-types.yml
- type: Conformance
  url: conformance/deepinquiry-conformance.yml
- type: Overlay
  url: overlays/deepinquiry-openapi-overlay.yml
- type: LLMsTxt
  url: llms/deepinquiry-llms.txt
- type: MCPServer
  url: mcp/deepinquiry-mcp.yml
- type: WellKnown
  url: well-known/deepinquiry-well-known.yml
- type: Hosts
  url: hosts/deepinquiry-hosts.yml
- type: Vendors
  url: vendors/deepinquiry-vendors.yml
- type: Login
  url: https://www.deepinquiry.ai/signin
- type: DomainSecurity
  url: security/deepinquiry-domain-security.yml
- type: Website
  url: https://www.deepinquiry.ai/
- type: Documentation
  url: https://www.deepinquiry.ai/docs
- type: APIReference
  url: https://www.deepinquiry.ai/api
- type: GettingStarted
  url: https://www.deepinquiry.ai/signup
- type: Pricing
  url: https://www.deepinquiry.ai/pricing
- type: TermsOfService
  url: https://www.deepinquiry.ai/terms
- type: PrivacyPolicy
  url: https://www.deepinquiry.ai/privacy
apis:
- aid: deepinquiry:deepinquiry-facts-api
  name: DeepInquiry Verified Facts API (Machine Accountability Corp) Facts API
  description: Read-only access to the verified-facts corpus.
  humanURL: https://www.deepinquiry.ai/docs
  baseURL: https://api.deepinquiry.ai/api
  tags:
  - Facts
  properties:
  - type: OpenAPI
    url: openapi/deepinquiry-facts-api-openapi.yml
  - type: JSONSchema
    url: json-schema/deepinquiry-fact-schema.json
  - type: JSONSchema
    url: json-schema/deepinquiry-fact-list-schema.json
  - type: JSONSchema
    url: json-schema/deepinquiry-fact-with-clusters-schema.json
  - type: JSONSchema
    url: json-schema/deepinquiry-search-result-schema.json
- aid: deepinquiry:deepinquiry-search-api
  name: DeepInquiry Verified Facts API (Machine Accountability Corp) Search API
  description: Semantic search across the corpus.
  humanURL: https://www.deepinquiry.ai/docs
  baseURL: https://api.deepinquiry.ai/api
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/deepinquiry-search-api-openapi.yml
  - type: JSONSchema
    url: json-schema/deepinquiry-fact-schema.json
  - type: JSONSchema
    url: json-schema/deepinquiry-fact-list-schema.json
  - type: JSONSchema
    url: json-schema/deepinquiry-fact-with-clusters-schema.json
  - type: JSONSchema
    url: json-schema/deepinquiry-search-result-schema.json
x-submission-notes: apis.json, openapi.json, llms.txt all live
x-submission-probe: root/docs 200; apis.json, openapi.json (3.0.3), llms.txt 200; real 404
x-submitted-by: hello@deepinquiry.ai (apis.io/add, 2026-10-15)
x-enrichment:
  date: '2026-10-18'
  status: enriched
  artifacts_added: 32
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local