Ocean.io

Ocean.io is a B2B go-to-market data platform built around lookalike intelligence: give it a domain or a set of closed-won customers and it returns the most similar companies from a database of 67M company profiles and 250M+ employee records, each carrying 100+ signals assembled from the open web. Alongside the web app it ships a public REST API at api.ocean.io covering company and people search (filter, Boolean and lookalike), company and person enrichment, domain and LinkedIn-handle lookup, verified email and phone reveal, autocomplete for filter values, and a stateful segmentation service that clusters a customer list into scored segments and attributes new domains to the closest one. The API is documented with a public OpenAPI 3.1 document, meters every call from a single credit pool, delivers batch and reveal results by webhook callback, and is also exposed to agents through a first-party hosted MCP server at api.ocean.io/mcp.

Ocean.io publishes 1 API on the APIs.io network. Tagged areas include Sales Intelligence, B2B, Enrichment, Lookalike, and Account Based Marketing.

The Ocean.io catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Ocean.io’s developer surface includes documentation, API reference, getting-started guide, pricing, authentication, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub

44.7/100 developing ▬ flat Agent 38/100 agent ready Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

1 APIs 1 MCP Servers

Sales Intelligence B2B EnrichmentLookalikeAccount Based Marketing Prospecting Company Data People Data Contact Data Segmentation Go-To-Market MCP

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 44.7/100 · developing

Contract Quality 15.3 / 25

Developer Ergonomics 4.6 / 20

Access Clarity 6.8 / 20

Operational Transparency 7.2 / 13

Contract Governance 2.0 / 12

Discoverability 8.7 / 10

Agent readiness — 38/100 · 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 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

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/ocean-io: 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 1

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

MCP Servers 1

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

Rate Limits 1

Documented rate limits and quota policies.

Ocean Io Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

Scopes 1

OAuth scopes governing access to this provider's APIs.

Ocean Io Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Ocean Io Agentic Access

26 operations · 23 acting · 1 human-in-the-loop

26 operations · 23 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

LLMsTxt

WellKnown

AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Lifecycle

Conventions

ErrorCatalog

Webhooks

DataModel

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Packages

Packages

Access & Security 5

Authentication, authorization, and security posture

Authentication

OAuthScopes

Compliance

TrustCenter

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: ocean-io
url: https://raw.githubusercontent.com/api-evangelist/ocean-io/refs/heads/main/apis.yml
name: Ocean.io
kind: company
description: 'Ocean.io is a B2B go-to-market data platform built around lookalike intelligence: give it a domain or a set
  of closed-won customers and it returns the most similar companies from a database of 67M company profiles and 250M+ employee
  records, each carrying 100+ signals assembled from the open web. Alongside the web app it ships a public REST API at api.ocean.io
  covering company and people search (filter, Boolean and lookalike), company and person enrichment, domain and LinkedIn-handle
  lookup, verified email and phone reveal, autocomplete for filter values, and a stateful segmentation service that clusters
  a customer list into scored segments and attributes new domains to the closest one. The API is documented with a public
  OpenAPI 3.1 document, meters every call from a single credit pool, delivers batch and reveal results by webhook callback,
  and is also exposed to agents through a first-party hosted MCP server at api.ocean.io/mcp.'
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/ocean-io.png
tags:
- Sales Intelligence
- B2B
- Enrichment
- Lookalike
- Account Based Marketing
- Prospecting
- Company Data
- People Data
- Contact Data
- Segmentation
- Go-To-Market
- MCP
tags_raw:
- Sales Intelligence
- B2B
- Enrichment
- Lookalike
- ABM
- Prospecting
- Company Data
- People Data
- Contact Data
- Segmentation
- Go-To-Market
- MCP
created: '2026-05-08'
modified: '2026-08-13'
specificationVersion: '0.23'
apis:
- name: Ocean.io API
  description: REST API for B2B company and people intelligence — 26 operations across search (v2 and v3 filter and lookalike
    search for companies and people), enrichment (single and batch, by domain or LinkedIn handle), lookup, contact reveal
    (verified email and phone, delivered by webhook), autocomplete of filter values, segmentation, and account operations
    (credit balance, data fields, warmup). Authenticated with an account API token in the X-Api-Token header, metered from
    a shared credit pool, cursor-paginated with searchAfter.
  humanURL: https://app.ocean.io/docs
  baseURL: https://api.ocean.io
  tags:
  - Sales Intelligence
  - B2B
  - Enrichment
  - Lookalike
  - Company Data
  - People Data
  - Contact Data
  - Segmentation
  - MCP
  properties:
  - type: OpenAPI
    url: openapi/ocean-io-api-openapi.yml
  - type: Overlay
    url: overlays/ocean-io-api-overlay.yaml
  - type: Documentation
    url: https://app.ocean.io/docs
  - type: APIReference
    url: https://app.ocean.io/docs
  - type: GettingStarted
    url: https://app.ocean.io/docs/getting-started/quickstart
  - type: MCPServer
    url: mcp/ocean-io-mcp.yml
  - type: ToolCrosswalk
    url: mcp/ocean-io-tool-crosswalk.yml
common:
- type: Website
  url: https://ocean.io/
- type: DeveloperPortal
  url: https://ocean.io/api
- type: Documentation
  url: https://app.ocean.io/docs
- type: APIReference
  url: https://app.ocean.io/docs
- type: GettingStarted
  url: https://app.ocean.io/docs/getting-started/quickstart
- type: Pricing
  url: https://ocean.io/pricing
- type: StatusPage
  url: https://status.ocean.io/
- type: Lifecycle
  url: lifecycle/ocean-io-lifecycle.yml
- type: Authentication
  url: authentication/ocean-io-authentication.yml
- type: OAuthScopes
  url: scopes/ocean-io-scopes.yml
- type: Conventions
  url: conventions/ocean-io-conventions.yml
- type: ErrorCatalog
  url: errors/ocean-io-problem-types.yml
- type: Webhooks
  url: asyncapi/ocean-io-webhooks.yml
- type: DataModel
  url: data-model/ocean-io-data-model.yml
- type: MCPServer
  url: mcp/ocean-io-mcp.yml
- type: ToolCrosswalk
  url: mcp/ocean-io-tool-crosswalk.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/ocean-io-llms.txt
- type: WellKnown
  url: well-known/ocean-io-well-known.yml
- type: Conformance
  url: conformance/ocean-io-conformance.yml
- type: Compliance
  url: https://trust.ocean.io/
- type: Packages
  url: packages/ocean-io-packages.yml
- type: AgenticAccess
  url: agentic-access/ocean-io-agentic-access.yml
- type: TrustCenter
  url: security/ocean-io-trust-center.yml
- type: DomainSecurity
  url: security/ocean-io-domain-security.yml
- type: Plans
  url: plans/ocean-io-plans-pricing.yml
- type: RateLimits
  url: rate-limits/ocean-io-rate-limits.yml
- type: FinOps
  url: finops/ocean-io-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 23
  pass: local-v1

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APIs 1

Ocean.io API

Open Collections 1

Ocean.io API Documentation