LinkupAPI

LinkupAPI provides an outreach API enabling AI agents and software to automate LinkedIn, email, and WhatsApp communications. It offers endpoints for prospect search, profile retrieval, email verification, messaging, and engagement tracking, supporting use cases like lead generation, candidate sourcing, and CRM enrichment. The platform includes a Managed Cloud Platform (MCP) for seamless integration with Claude, Cursor, and other AI tools, delivering real-time data and interaction capabilities across B2B channels.

LinkupAPI is listed with 2 APIs on the APIs.io network. Tagged areas include Company, API, Outreach, AI, and Automation.

The LinkupAPI catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

LinkupAPI’s developer surface includes authentication, pricing, getting-started guide, documentation, API reference, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

47.2/100 developing Agent 47/100 agent ready Full breakdown ↓
scored 2026-10-18 · rubric v0.24.0

2 APIs 1 MCP Servers

CompanyAPIOutreachAIAutomation

Kin Score

Kin Score How this is scored →
scored 2026-10-18 · rubric v0.24.0

Composite quality — 47.2/100 · developing

Contract Quality 9.2 / 21

Developer Ergonomics 6.9 / 17

Access Clarity 10.2 / 17

Operational Transparency 0.9 / 11

Contract Governance 7.2 / 10

Discoverability 4.8 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 47/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 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 0 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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/linkupapi: 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 2

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

LinkupAPI API

API for automating LinkedIn, email, and WhatsApp communications as described on the documentation site.

LinkupAPI API

LinkupAPI API as documented publicly: 55 operations. Contract generated from the documentation by API Evangelist (2026-10-18); not the provider's own document.

MCP Servers 1

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

LinkupAPI MCP Server

Remote MCP server at mcp.linkupapi.com.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Linkupapi Plans Pricing

3 plans

PLANS

Event Specifications 1

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

Linkupapi Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Linkupapi Context

35 classes · 18 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

LinkupAPI API Rules

11 rules · 10 errors 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

PostV1MessagesSendMessageRequest

4 properties

JSON SCHEMA

PostV1NetworkAcceptInvitationRequest

3 properties

JSON SCHEMA

PostV1NetworkAcceptInvitationResponse

3 properties

JSON SCHEMA

PostV1ProfileSearchRequest

5 properties

JSON SCHEMA

PostV1WebhooksAccountsRequest

4 properties

JSON SCHEMA

PostV2CategoryRequest

3 properties

JSON SCHEMA

Security Posture 2

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

Linkupapi Authentication

1 scheme

SECURITY

Linkupapi Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

WellKnown

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

ErrorCatalog

Conformance

Scroll for all 7

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: linkupapi
name: LinkupAPI
image: https://media.linkupapi.com/hero/LinkupAPI_Hero_v2_poster.jpg
description: LinkupAPI provides an outreach API enabling AI agents and software to automate LinkedIn, email, and WhatsApp
  communications. It offers endpoints for prospect search, profile retrieval, email verification, messaging, and engagement
  tracking, supporting use cases like lead generation, candidate sourcing, and CRM enrichment. The platform includes a Managed
  Cloud Platform (MCP) for seamless integration with Claude, Cursor, and other AI tools, delivering real-time data and interaction
  capabilities across B2B channels.
url: https://raw.githubusercontent.com/api-evangelist/linkupapi/refs/heads/main/apis.yml
x-type: company
x-source: harvest:g2-catalog
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-18 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-18'
modified: '2026-10-18'
tags:
- Company
- API
- Outreach
- AI
- Automation
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/linkupapi-plans-pricing.yml
- type: Spectral
  url: rules/linkupapi-rules.yml
- type: JSONLD
  url: json-ld/linkupapi-context.jsonld
- type: Vocabulary
  url: vocabulary/linkupapi-vocabulary.yml
- type: Webhooks
  url: asyncapi/linkupapi-webhooks.yml
- type: DataModel
  url: data-model/linkupapi-data-model.yml
- type: Authentication
  url: authentication/linkupapi-authentication.yml
- type: ErrorCatalog
  url: errors/linkupapi-problem-types.yml
- type: Conformance
  url: conformance/linkupapi-conformance.yml
- type: LLMsTxt
  url: llms/linkupapi-llms.txt
- type: AgentCard
  url: a2a/linkupapi-a2a.yml
- type: MCPServer
  url: mcp/linkupapi-mcp.yml
- type: WellKnown
  url: well-known/linkupapi-well-known.yml
- type: Hosts
  url: hosts/linkupapi-hosts.yml
- type: Vendors
  url: vendors/linkupapi-vendors.yml
- type: TermsOfService
  url: https://linkupapi.com/legal/legal-notice
- type: PrivacyPolicy
  url: https://linkupapi.com/legal/privacy-policy
- type: Pricing
  url: https://linkupapi.com/pricing
- type: GettingStarted
  url: https://docs.linkupapi.com/api-reference/v2/mcp-setup
- type: Documentation
  url: https://docs.linkupapi.com/
- type: APIReference
  url: https://docs.linkupapi.com/llms.txt
- type: DomainSecurity
  url: security/linkupapi-domain-security.yml
- type: Website
  url: https://linkupapi.com/
apis:
- name: LinkupAPI API
  description: API for automating LinkedIn, email, and WhatsApp communications as described on the documentation site.
  humanURL: https://docs.linkupapi.com/
  aid: linkupapi:linkupapi-api-2
- aid: linkupapi:linkupapi-api
  name: LinkupAPI API
  description: 'LinkupAPI API as documented publicly: 55 operations. Contract generated from the documentation by API Evangelist
    (2026-10-18);

    not the provider''s own document.'
  humanURL: https://docs.linkupapi.com/api-reference/v2/introduction
  baseURL: https://api.linkupapi.com
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/linkupapi-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/linkupapi-post-v1-webhooks-accounts-request-schema.json
  - type: JSONSchema
    url: json-schema/linkupapi-post-v1-network-accept-invitation-request-schema.json
  - type: JSONSchema
    url: json-schema/linkupapi-post-v1-network-accept-invitation-response-schema.json
  - type: JSONSchema
    url: json-schema/linkupapi-post-v2-category-request-schema.json
  - type: JSONSchema
    url: json-schema/linkupapi-post-v1-profile-search-request-schema.json
  - type: JSONSchema
    url: json-schema/linkupapi-post-v1-messages-send-message-request-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The only OpenAPI document found (https://docs.linkupapi.com/openapi.json) describes a LinkedIn API, not LinkupAPI,
    so no valid contract belongs to this provider.
  evidence:
  - url: https://docs.linkupapi.com/openapi.json
    status: 200
  checked: '2026-10-18'
x-enrichment:
  date: '2026-10-18'
  status: enriched
  artifacts_added: 33
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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