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 8 APIs on the APIs.io network, including Autocomplete API, Enrich API, Lookup API, and 5 more. 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 25 more developer resources.

🌐 Visit website 📡 Source on GitHub

41.2/100 developing ▬ flat Agent 43/100 agent ready Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0

2 published contracts 1 MCP Servers

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

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Customer Relationship Management

BC-420

EnrichSegmentation

POST /v2/segmentation POST /v2/segmentation/{segmentation_id}/attribute-domains POST /v2/enrich/company POST /v2/enrich/person

Kin Score

Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0

Composite quality — 41.2/100 · developing

Contract Quality 9.7 / 19

Developer Ergonomics 3.5 / 15

Access Clarity 5.1 / 15

Operational Transparency 5.4 / 10

Contract Governance 0.4 / 9

Discoverability 5.6 / 8

Regulatory Posture 4.7 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 43/100 · 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 Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. 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. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 8

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

Ocean.io Autocomplete API

The Autocomplete API from Ocean.io — 5 operation(s) for autocomplete.

Ocean.io Enrich API

The Enrich API from Ocean.io — 4 operation(s) for enrich.

Ocean.io Lookup API

The Lookup API from Ocean.io — 2 operation(s) for lookup.

Ocean.io API Documentation API

The Ocean.io API Documentation API from Ocean.io — 0 operation(s) for ocean.io api documentation.

Ocean.io Other API

The Other API from Ocean.io — 3 operation(s) for other.

Ocean.io Reveal API

The Reveal API from Ocean.io — 2 operation(s) for reveal.

Ocean.io Search API

The Search API from Ocean.io — 6 operation(s) for search.

Ocean.io Segmentation API

The Segmentation API from Ocean.io — 4 operation(s) for segmentation.

Scroll for all 8

Open Collections 1

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

Ocean.io API Documentation

OPEN COLLECTION

MCP Servers 1

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

Ocean.io MCP Server

Ocean.io publishes a first-party hosted (remote) MCP server that exposes the company/people data API to any MCP-aware client. It is a single HTTPS endpoint the client POSTs to; ...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Ocean Io Plans Pricing

0 plans

PLANS

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.

Ocean Io Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Ocean Io Webhooks

ASYNCAPI

Security Posture 3

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

Ocean Io Authentication

apiKey/oauth2 · 3 schemes

SECURITY

Ocean Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Ocean Io Trust Center

SOC 2

SECURITY

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

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

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.'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
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: '2026-09-16'
specificationVersion: '0.23'
apis:
- aid: ocean-io:ocean-io-autocomplete-api
  name: Ocean.io Autocomplete API
  description: The Autocomplete API from Ocean.io — 5 operation(s) for autocomplete.
  humanURL: https://app.ocean.io/docs
  baseURL: https://api.ocean.io
  tags:
  - Autocomplete
  properties:
  - type: OpenAPI
    url: openapi/ocean-io-autocomplete-api-openapi.yml
  - 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: ToolCrosswalk
    url: mcp/ocean-io-tool-crosswalk.yml
- aid: ocean-io:ocean-io-enrich-api
  name: Ocean.io Enrich API
  description: The Enrich API from Ocean.io — 4 operation(s) for enrich.
  humanURL: https://app.ocean.io/docs
  baseURL: https://api.ocean.io
  tags:
  - Enrich
  properties:
  - type: OpenAPI
    url: openapi/ocean-io-enrich-api-openapi.yml
  - 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: ToolCrosswalk
    url: mcp/ocean-io-tool-crosswalk.yml
- aid: ocean-io:ocean-io-lookup-api
  name: Ocean.io Lookup API
  description: The Lookup API from Ocean.io — 2 operation(s) for lookup.
  humanURL: https://app.ocean.io/docs
  baseURL: https://api.ocean.io
  tags:
  - Lookup
  properties:
  - type: OpenAPI
    url: openapi/ocean-io-lookup-api-openapi.yml
  - 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: ToolCrosswalk
    url: mcp/ocean-io-tool-crosswalk.yml
- aid: ocean-io:ocean-io-ocean-io-api-documentation-api
  name: Ocean.io API Documentation API
  description: The Ocean.io API Documentation API from Ocean.io — 0 operation(s) for ocean.io api documentation.
  humanURL: https://app.ocean.io/docs
  baseURL: https://api.ocean.io
  tags:
  - Ocean.io API Documentation
  properties:
  - type: OpenAPI
    url: openapi/ocean-io-ocean-io-api-documentation-api-openapi.yml
  - 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: ToolCrosswalk
    url: mcp/ocean-io-tool-crosswalk.yml
- aid: ocean-io:ocean-io-other-api
  name: Ocean.io Other API
  description: The Other API from Ocean.io — 3 operation(s) for other.
  humanURL: https://app.ocean.io/docs
  baseURL: https://api.ocean.io
  tags: []
  tags_raw:
  - Other
  properties:
  - type: OpenAPI
    url: openapi/ocean-io-other-api-openapi.yml
  - 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: ToolCrosswalk
    url: mcp/ocean-io-tool-crosswalk.yml
- aid: ocean-io:ocean-io-reveal-api
  name: Ocean.io Reveal API
  description: The Reveal API from Ocean.io — 2 operation(s) for reveal.
  humanURL: https://app.ocean.io/docs
  baseURL: https://api.ocean.io
  tags:
  - Reveal
  properties:
  - type: OpenAPI
    url: openapi/ocean-io-reveal-api-openapi.yml
  - 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: ToolCrosswalk
    url: mcp/ocean-io-tool-crosswalk.yml
- aid: ocean-io:ocean-io-search-api
  name: Ocean.io Search API
  description: The Search API from Ocean.io — 6 operation(s) for search.
  humanURL: https://app.ocean.io/docs
  baseURL: https://api.ocean.io
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/ocean-io-search-api-openapi.yml
  - 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: ToolCrosswalk
    url: mcp/ocean-io-tool-crosswalk.yml
- aid: ocean-io:ocean-io-segmentation-api
  name: Ocean.io Segmentation API
  description: The Segmentation API from Ocean.io — 4 operation(s) for segmentation.
  humanURL: https://app.ocean.io/docs
  baseURL: https://api.ocean.io
  tags:
  - Segmentation
  properties:
  - type: OpenAPI
    url: openapi/ocean-io-segmentation-api-openapi.yml
  - 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: ToolCrosswalk
    url: mcp/ocean-io-tool-crosswalk.yml
common:
- type: CapabilityMap
  url: capabilities/ocean-io-capability-edges.yml
  name: Ocean.io Business Capability Map
- type: Overlay
  url: overlays/ocean-io-api-overlay.yaml
- 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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