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 24 more developer resources.

🌐 Visit website 📡 Source on GitHub

40.3/100 developing ▬ flat Agent 43/100 agent ready saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

2 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 2026-09-14 · rubric v0.22.0

Composite quality — 40.3/100 · developing

Contract Quality 12.8 / 23

Developer Ergonomics 4.2 / 18

Access Clarity 6.2 / 18

Operational Transparency 6.5 / 12

Contract Governance 0.5 / 11

Discoverability 6.8 / 9

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

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.

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 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 1

Properties that don't map to a standard resource type

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: '2026-08-13'
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 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: 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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