# DeepInquiry Verified Facts API (Machine Accountability Corp)

**Canonical:** https://apis.io/providers/deepinquiry/  
**Website:** https://www.deepinquiry.ai/  
**APIs profiled:** 1

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.

## Kin Score — 59.8 / 100 (strong)

Scored 2026-10-18 under rubric 0.24.0.

| Facet | Score |
|---|---|
| Discoverability | 65.0 |
| Contract Quality | 63.8 |
| Contract Governance | 79.1 |
| Operational Transparency | 28.4 |
| Developer Ergonomics | 40.5 |
| Access Clarity | 73.2 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 24.5 (matched via fallback).

## Agent readiness — 36.2 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | unknown |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | derived |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## APIs (2)

- **DeepInquiry Verified Facts API (Machine Accountability Corp) Facts API** — Read-only access to the verified-facts corpus.
- **DeepInquiry Verified Facts API (Machine Accountability Corp) Search API** — Semantic search across the corpus.

## MCP servers (1)

- **DeepInquiry Verified Facts API (Machine Accountability Corp) MCP Server** — Remote MCP server at www.deepinquiry.ai requiring an API key.

## Agentic access (1)

- **Deepinquiry Agentic Access** — 4 operations

## Security (2)

- **Deepinquiry Authentication** — 1 scheme
- **Deepinquiry Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Deepinquiry Plans Pricing**

## Tags

Company, API, Facts, Verification, Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/deepinquiry/). Scores are computed from the provider's own public artifacts under a published rubric.