Explorium website screenshot

Explorium

Explorium is a B2B data foundation for AI agents and go-to-market teams. Its AgentSource API is a single external-data and enrichment platform - one API plus a native MCP server - that resolves, fetches, enriches, and monitors a business dataset of 150M+ companies and a prospect dataset of 800M+ people aggregated from 100+ external sources. Capabilities include entity matching, filtered fetch and market-sizing stats, autocomplete, 30+ firmographic / technographic / financial / prospect-contact enrichment endpoints (single and bulk up to 50 records), real-time business and prospect event tracking with webhooks, and a shared credit pool that meters all usage. The API is hosted at https://api.explorium.ai, authenticated with an API_KEY header, and gated behind an Explorium account with a free 100-credit developer tier.

Explorium publishes 7 APIs on the APIs.io network, including Business Enrichments API, Businesses API, Credits API, and 4 more. Tagged areas include Data Enrichment, Web Intelligence, Reference Data, B2B Data, and Company Data.

Explorium’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.3/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
8 APIs
Data EnrichmentWeb IntelligenceReference DataB2B DataCompany DataAI AgentsProspect EnrichmentFirmographicsMCP

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 40.3/100 · thin
Contract Quality 15.9 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/explorium: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 8

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

Explorium AgentSource MCP Server

Native remote Model Context Protocol server exposing the AgentSource data as 11 agent tools - match-business, fetch-businesses, fetch-businesses- statistics, fetch-businesses-ev...

Explorium Business Enrichments API

Firmographic, technographic, financial, and operational company enrichments.

Explorium Businesses API

Match, fetch, stat, and autocomplete over the 150M+ company dataset.

Explorium Credits API

Inspect the shared credit pool that meters all API usage.

Explorium Events API

Business and prospect event tracking plus enrollment management.

Explorium Prospect Enrichments API

Contact information, profile, and social enrichments for people.

Explorium Prospects API

Match, fetch, stat, and autocomplete over the 800M+ people dataset.

Explorium Webhooks API

Register endpoints that receive event notifications.

Scroll for all 8

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Explorium AgentSource API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Explorium Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Explorium Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Explorium Finops

FINOPS

Security Posture 1

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

Explorium Authentication

apiKey · 1 scheme

SECURITY

Agentic Access 1

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

Explorium Agentic Access

17 operations · 14 acting

17 operations · 14 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 MCP
MCP

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: explorium
url: https://raw.githubusercontent.com/api-evangelist/explorium/refs/heads/main/apis.yml
name: Explorium
kind: company
description: Explorium is a B2B data foundation for AI agents and go-to-market teams. Its AgentSource API is a single external-data
  and enrichment platform - one API plus a native MCP server - that resolves, fetches, enriches, and monitors a business dataset
  of 150M+ companies and a prospect dataset of 800M+ people aggregated from 100+ external sources. Capabilities include entity
  matching, filtered fetch and market-sizing stats, autocomplete, 30+ firmographic / technographic / financial / prospect-contact
  enrichment endpoints (single and bulk up to 50 records), real-time business and prospect event tracking with webhooks, and
  a shared credit pool that meters all usage. The API is hosted at https://api.explorium.ai, authenticated with an API_KEY
  header, and gated behind an Explorium account with a free 100-credit developer tier.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/explorium.png
tags:
- Data Enrichment
- Web Intelligence
- Reference Data
- B2B Data
- Company Data
- AI Agents
- Prospect Enrichment
- Firmographics
- MCP
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.19'
apis:
- aid: explorium:explorium-agentsource-mcp-server
  name: Explorium AgentSource MCP Server
  tags:
  - MCP
  - AI Agents
  - Model Context Protocol
  - B2B Data
  - Web Intelligence
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.explorium.ai/mcp-docs/agentsource-mcp
  baseURL: https://mcp.explorium.ai/mcp
  properties:
  - url: https://developers.explorium.ai/mcp-docs/agentsource-mcp
    type: Documentation
  - url: https://mcp.explorium.ai/mcp
    type: MCP
  - url: https://github.com/explorium-ai/mcp-explorium
    type: SourceCode
  description: Native remote Model Context Protocol server exposing the AgentSource data as 11 agent tools - match-business,
    fetch-businesses, fetch-businesses- statistics, fetch-businesses-events, enrich-business, match-prospects, fetch-prospects,
    fetch-prospects-statistics, fetch-prospects-events, enrich-prospects, and autocomplete. Available over streamable HTTP
    (https://mcp.explorium.ai/mcp) and SSE (https://mcp.explorium.ai/sse), and self-hostable via Docker (MIT). Works with
    Claude Desktop, Cursor, VS Code, n8n, and other MCP clients.
- aid: explorium:explorium-business-enrichments-api
  name: Explorium Business Enrichments API
  description: Firmographic, technographic, financial, and operational company enrichments.
  humanURL: https://developers.explorium.ai/reference/businesses_api
  baseURL: https://api.explorium.ai
  tags:
  - Business Enrichments
  properties:
  - type: OpenAPI
    url: openapi/explorium-business-enrichments-api-openapi.yml
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/prospects_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_prospects
  - type: APIReference
    url: https://developers.explorium.ai/reference/match_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_events
- aid: explorium:explorium-businesses-api
  name: Explorium Businesses API
  description: Match, fetch, stat, and autocomplete over the 150M+ company dataset.
  humanURL: https://developers.explorium.ai/reference/businesses_api
  baseURL: https://api.explorium.ai
  tags:
  - Businesses
  properties:
  - type: OpenAPI
    url: openapi/explorium-businesses-api-openapi.yml
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/prospects_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_prospects
  - type: APIReference
    url: https://developers.explorium.ai/reference/match_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_events
- aid: explorium:explorium-credits-api
  name: Explorium Credits API
  description: Inspect the shared credit pool that meters all API usage.
  humanURL: https://developers.explorium.ai/reference/businesses_api
  baseURL: https://api.explorium.ai
  tags:
  - Credits
  properties:
  - type: OpenAPI
    url: openapi/explorium-credits-api-openapi.yml
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/prospects_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_prospects
  - type: APIReference
    url: https://developers.explorium.ai/reference/match_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_events
- aid: explorium:explorium-events-api
  name: Explorium Events API
  description: Business and prospect event tracking plus enrollment management.
  humanURL: https://developers.explorium.ai/reference/businesses_api
  baseURL: https://api.explorium.ai
  tags:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/explorium-events-api-openapi.yml
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/prospects_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_prospects
  - type: APIReference
    url: https://developers.explorium.ai/reference/match_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_events
- aid: explorium:explorium-prospect-enrichments-api
  name: Explorium Prospect Enrichments API
  description: Contact information, profile, and social enrichments for people.
  humanURL: https://developers.explorium.ai/reference/businesses_api
  baseURL: https://api.explorium.ai
  tags:
  - Prospect Enrichments
  properties:
  - type: OpenAPI
    url: openapi/explorium-prospect-enrichments-api-openapi.yml
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/prospects_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_prospects
  - type: APIReference
    url: https://developers.explorium.ai/reference/match_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_events
- aid: explorium:explorium-prospects-api
  name: Explorium Prospects API
  description: Match, fetch, stat, and autocomplete over the 800M+ people dataset.
  humanURL: https://developers.explorium.ai/reference/businesses_api
  baseURL: https://api.explorium.ai
  tags:
  - Prospects
  properties:
  - type: OpenAPI
    url: openapi/explorium-prospects-api-openapi.yml
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/prospects_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_prospects
  - type: APIReference
    url: https://developers.explorium.ai/reference/match_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_events
- aid: explorium:explorium-webhooks-api
  name: Explorium Webhooks API
  description: Register endpoints that receive event notifications.
  humanURL: https://developers.explorium.ai/reference/businesses_api
  baseURL: https://api.explorium.ai
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/explorium-webhooks-api-openapi.yml
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/prospects_api
  - type: APIReference
    url: https://developers.explorium.ai/reference/fetch_prospects
  - type: APIReference
    url: https://developers.explorium.ai/reference/match_businesses
  - type: Documentation
    url: https://developers.explorium.ai/reference/businesses_events
common:
- type: AgenticAccess
  url: agentic-access/explorium-agentic-access.yml
- type: Authentication
  url: authentication/explorium-authentication.yml
- type: GitHubOrganization
  url: https://github.com/explorium-ai
- type: LinkedIn
  url: https://www.linkedin.com/company/explorium-ai
- type: Website
  url: https://www.explorium.ai
- type: Documentation
  url: https://developers.explorium.ai
- type: MCP
  url: https://developers.explorium.ai/mcp-docs/agentsource-mcp
- type: Plans
  url: plans/explorium-plans-pricing.yml
- type: RateLimits
  url: rate-limits/explorium-rate-limits.yml
- type: FinOps
  url: finops/explorium-finops.yml
- url: https://www.explorium.ai/blog/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com