Hull

Hull is a real-time Customer Data Platform (CDP) that unifies customer data from every source — web, product, CRM, marketing and support tools, databases and files — into a single User and Account profile using claim-based identity resolution. It ingests, computes and enriches data through a data-lifecycle pipeline (Ingest / Compute / Notify), organizes people and companies into Segments, and syncs the resulting profiles out to more than fifty tools via Connectors ("ships"). Developers integrate through a flat HTTP API at https://{organization}.hullapp.io/api/v1 covering Users, Accounts, Events, Segments, Status and Bulk operations, plus first-party Node, browser, PHP and Ruby client libraries and an outgoing/incoming webhook surface. Hull was acquired by MessageBird (now Bird) and the platform was switched off at 09:00 ET on 31 December 2022, with all infrastructure decommissioned and customer data deleted; the marketing site and documentation remain published but the API host no longer answers.

Hull publishes 1 API on the APIs.io network. Tagged areas include Company, Customer Data Platform, CDP, Identity Resolution, and Data Integration.

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

Hull’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, authentication, support, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub

50.1/100 developing ▬ flat Agent 25/100 agent aware saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0

AccessPaid

1 APIs

Company Customer Data Platform CDP Identity Resolution Data Integration Customer Data Marketing Real-Time iPaaS Analytics

Kin Score

Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0

Composite quality — 50.1/100 · developing

Contract Quality 10.4 / 25

Developer Ergonomics 9.8 / 20

Access Clarity 10.8 / 20

Operational Transparency 9.4 / 13

Contract Governance 2.2 / 12

Discoverability 7.6 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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 0 / 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

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/hull: 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 1

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

Rate Limits 1

Documented rate limits and quota policies.

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

DataModel

Webhooks

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 6

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

TrustCenter

TrustCenter

Compliance

Compliance

Operate 6

Status, limits, changes, and where to get help

StatusPage

Support

ChangeLog

ChangeLog

Deprecation

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

PrivacyPolicy

PrivacyPolicy

Plans

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: hull
name: Hull
description: Hull is a real-time Customer Data Platform (CDP) that unifies customer data from every source — web, product,
  CRM, marketing and support tools, databases and files — into a single User and Account profile using claim-based identity
  resolution. It ingests, computes and enriches data through a data-lifecycle pipeline (Ingest / Compute / Notify), organizes
  people and companies into Segments, and syncs the resulting profiles out to more than fifty tools via Connectors ("ships").
  Developers integrate through a flat HTTP API at https://{organization}.hullapp.io/api/v1 covering Users, Accounts, Events,
  Segments, Status and Bulk operations, plus first-party Node, browser, PHP and Ruby client libraries and an outgoing/incoming
  webhook surface. Hull was acquired by MessageBird (now Bird) and the platform was switched off at 09:00 ET on 31 December
  2022, with all infrastructure decommissioned and customer data deleted; the marketing site and documentation remain published
  but the API host no longer answers.
url: https://raw.githubusercontent.com/api-evangelist/hull/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- point-nine
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: none
  trial: false
  try_now: false
  public: false
  label: Closed — platform shut down 31 December 2022
  confidence: high
  source:
  - https://www.hull.io/pricing/
  - https://www.hull.io/faq/
  note: Published tiers were Team $950/mo, Business $1600/mo and Business + (custom), all on annual commercial agreements
    with no free tier and no trial. Hull was switched off at 09:00 ET on 2022-12-31 and its infrastructure decommissioned;
    hullapp.io no longer completes a TLS handshake.
  generated: '2026-08-13'
  method: searched
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
image: https://www.hull.io/assets/images/logo/logo_dark@2x.png
tags:
- Company
- Customer Data Platform
- CDP
- Identity Resolution
- Data Integration
- Customer Data
- Marketing
- Real-Time
- iPaaS
- Analytics
tags_raw:
- Company
- Customer Data Platform
- CDP
- Identity Resolution
- Data Integration
- Customer Data
- Marketing
- Real-time
- iPaaS
- Analytics
apis:
- name: Hull HTTP API
  description: Flat REST API for Hull's Customer Data Platform, addressing objects by ID under the /api/v1 prefix on a per-organization
    hullapp.io subdomain. Covers Users, Accounts, Events, Segments, organization/connector Status and Bulk operations (Firehose,
    Import/Extract).
  humanURL: https://www.hull.io/docs/reference/http_api/introduction/
  baseURL: https://hullapp.io/api/v1
  properties:
  - type: Documentation
    url: https://www.hull.io/docs/reference/http_api/
  - type: Authentication
    url: authentication/hull-authentication.yml
  - type: Conventions
    url: conventions/hull-conventions.yml
  - type: ErrorCatalog
    url: errors/hull-error-codes.yml
  - type: DataModel
    url: data-model/hull-data-model.yml
  - type: Webhooks
    url: asyncapi/hull-webhooks.yml
  - type: X-MCPServerCandidate
    url: mcp/hull-mcp.yml
    note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list
      derived from the published API contracts, not an existing server. The scorer already read the manifest and reported
      mcp_server correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.hull.io
- type: DeveloperPortal
  url: https://www.hull.io/docs/
- type: Documentation
  url: https://www.hull.io/docs/
- type: APIReference
  url: https://www.hull.io/docs/reference/http_api/
- type: GettingStarted
  url: https://www.hull.io/docs/guides/
- type: Blog
  url: https://www.hull.io/blog/
- type: Pricing
  url: https://www.hull.io/pricing/
- type: PrivacyPolicy
  url: https://www.hull.io/pp/
- type: GitHubOrganization
  url: https://github.com/hull
- type: Authentication
  url: authentication/hull-authentication.yml
- type: Conventions
  url: conventions/hull-conventions.yml
- type: ErrorCatalog
  url: errors/hull-error-codes.yml
- type: Lifecycle
  url: lifecycle/hull-lifecycle.yml
- type: StatusPage
  url: https://status.hull.io/
- type: Packages
  url: packages/hull-packages.yml
- type: SDKs
  url: packages/hull-packages.yml
- type: DataModel
  url: data-model/hull-data-model.yml
- type: Webhooks
  url: asyncapi/hull-webhooks.yml
- type: X-MCPServerCandidate
  url: mcp/hull-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: Conformance
  url: conformance/hull-conformance.yml
- type: LLMsTxt
  url: llms/hull-llms.txt
- type: DomainSecurity
  url: security/hull-domain-security.yml
- type: Support
  url: https://www.hull.io/faq/
- type: ChangeLog
  url: https://changes.hull.io
- type: ChangeLog
  name: Hull changelog (captured)
  url: changelog/hull-changelog.yml
- type: Deprecation
  url: https://www.hull.io/faq/
- type: Plans
  url: plans/hull-plans-pricing.yml
- type: RateLimits
  url: rate-limits/hull-rate-limits.yml
- type: Sandbox
  url: sandbox/hull-sandbox.yml
- type: VulnerabilityDisclosure
  url: security/hull-vulnerability-disclosure.yml
- type: Security
  url: https://www.hull.io/security/
- type: TrustCenter
  url: security/hull-trust-center.yml
- type: Compliance
  url: https://www.hull.io/security/
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 6
  pass: local-v1

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Hull

Kin Score

APIs 1

Hull HTTP API

Pricing Plans 1

Hull Plans Pricing

Rate Limits 1

Hull Rate Limits

Event Specifications 1

Hull Webhooks

Security Posture 4

Hull Authentication

Hull Domain Security

Hull Vulnerability Disclosure

Hull Trust Center

Resources