NaviStone

NaviStone is a direct-mail marketing technology company that turns first-party and "unknown" website audiences into addressable postcard campaigns for consumer brands. Its platform helps businesses prospect (lookalike audiences), retain (mailing customers who opt out of digital channels), and retarget (postcards that amplify campaign performance), claiming up to a 70% increase in return on marketing spend. NaviStone's platform API (implemented on the Zazmic platform and published at docs.navistone.com) manages clients, website domains, audience segments, campaigns tied to Modern Postcard creative IDs, ZIP-code and state geo-targeting, and output tracking, all secured with an X-API-Key header. NaviStone is backed by Bullpen Capital and works with brands including Sleep Number, Vitamix, and Hey Dude across retail, travel, beauty, apparel, and home services.

NaviStone publishes 8 APIs on the APIs.io network, including API Info API, Campaigns API, Clients API, and 5 more. Tagged areas include Company, Marketing, Direct Mail, Advertising, and Customer Acquisition.

NaviStone’s developer surface includes documentation, API reference, engineering blog, signup flow, authentication, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.9/100 thin ▬ flat Agent 41/100 agent ready Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0

AccessSelf serve

8 APIs 1 MCP Servers

CompanyMarketingDirect MailAdvertisingCustomer AcquisitionAudience TargetingMarTechAdTechPostcardsRetargeting

Kin Score

Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0

Composite quality — 36.9/100 · thin

Contract Quality 11.7 / 25

Developer Ergonomics 8.2 / 20

Commercial Clarity 4.7 / 20

Operational Transparency 2.7 / 13

Governance 1.4 / 12

Discoverability 8.2 / 10

Agent readiness — 41/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 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

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/navistone: 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 8

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.

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

MCPServer

LLMsTxt

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

DataModel

Conformance

Lifecycle

Arazzo

Build 3

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Plans

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: navistone
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/navistone.png
name: NaviStone
description: NaviStone is a direct-mail marketing technology company that turns first-party and "unknown" website audiences
  into addressable postcard campaigns for consumer brands. Its platform helps businesses prospect (lookalike audiences), retain
  (mailing customers who opt out of digital channels), and retarget (postcards that amplify campaign performance), claiming
  up to a 70% increase in return on marketing spend. NaviStone's platform API (implemented on the Zazmic platform and published
  at docs.navistone.com) manages clients, website domains, audience segments, campaigns tied to Modern Postcard creative IDs,
  ZIP-code and state geo-targeting, and output tracking, all secured with an X-API-Key header. NaviStone is backed by Bullpen
  Capital and works with brands including Sleep Number, Vitamix, and Hey Dude across retail, travel, beauty, apparel, and
  home services.
url: https://raw.githubusercontent.com/api-evangelist/navistone/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- bullpen-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Company
- Marketing
- Direct Mail
- Advertising
- Customer Acquisition
- Audience Targeting
- MarTech
- AdTech
- Postcards
- Retargeting
apis:
- aid: navistone:navistone-api-info-api
  name: NaviStone API Info API
  description: API information and endpoints
  humanURL: https://docs.navistone.com
  baseURL: https://docs.navistone.com
  tags:
  - API Info
  properties:
  - type: OpenAPI
    url: openapi/navistone-api-info-api-openapi.yml
- aid: navistone:navistone-campaigns-api
  name: NaviStone Campaigns API
  description: Campaign management
  humanURL: https://docs.navistone.com
  baseURL: https://docs.navistone.com
  tags:
  - Campaigns
  properties:
  - type: OpenAPI
    url: openapi/navistone-campaigns-api-openapi.yml
- aid: navistone:navistone-clients-api
  name: NaviStone Clients API
  description: Client management
  humanURL: https://docs.navistone.com
  baseURL: https://docs.navistone.com
  tags:
  - Clients
  properties:
  - type: OpenAPI
    url: openapi/navistone-clients-api-openapi.yml
- aid: navistone:navistone-domains-api
  name: NaviStone Domains API
  description: Domain management
  humanURL: https://docs.navistone.com
  baseURL: https://docs.navistone.com
  tags:
  - Domains
  properties:
  - type: OpenAPI
    url: openapi/navistone-domains-api-openapi.yml
- aid: navistone:navistone-geo-targeting-api
  name: NaviStone Geo Targeting API
  description: Geographic targeting
  humanURL: https://docs.navistone.com
  baseURL: https://docs.navistone.com
  tags:
  - Geo Targeting
  properties:
  - type: OpenAPI
    url: openapi/navistone-geo-targeting-api-openapi.yml
- aid: navistone:navistone-health-api
  name: NaviStone Health API
  description: Health checks
  humanURL: https://docs.navistone.com
  baseURL: https://docs.navistone.com
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/navistone-health-api-openapi.yml
- aid: navistone:navistone-output-api
  name: NaviStone Output API
  description: Output tracking
  humanURL: https://docs.navistone.com
  baseURL: https://docs.navistone.com
  tags:
  - Output
  properties:
  - type: OpenAPI
    url: openapi/navistone-output-api-openapi.yml
- aid: navistone:navistone-segments-api
  name: NaviStone Segments API
  description: Audience segments
  humanURL: https://docs.navistone.com
  baseURL: https://docs.navistone.com
  tags:
  - Segments
  properties:
  - type: OpenAPI
    url: openapi/navistone-segments-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/navistone-agentic-access.yml
- type: Website
  url: https://www.navistone.com
- type: DeveloperPortal
  url: https://docs.navistone.com
- type: Documentation
  url: https://docs.navistone.com
- type: APIReference
  url: https://docs.navistone.com
- type: Blog
  url: https://www.navistone.com/blog
- type: SignUp
  url: https://www.navistone.com/get-started
- type: PrivacyPolicy
  url: https://www.navistone.com/privacy-policy
- type: Authentication
  url: authentication/navistone-authentication.yml
- type: DomainSecurity
  url: security/navistone-domain-security.yml
- type: Conventions
  url: conventions/navistone-conventions.yml
- type: ErrorCatalog
  url: errors/navistone-problem-types.yml
- type: DataModel
  url: data-model/navistone-data-model.yml
- type: Conformance
  url: conformance/navistone-conformance.yml
- type: Lifecycle
  url: lifecycle/navistone-lifecycle.yml
- type: MCPServer
  url: mcp/navistone-mcp.yml
- type: Overlay
  url: overlays/navistone-openapi-overlay.yaml
- type: LLMsTxt
  url: llms/navistone-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Arazzo
  name: NaviStone campaign launch
  url: arazzo/navistone-campaign-launch.yml
- type: ToolCrosswalk
  url: mcp/navistone-tool-crosswalk.yml
- type: Packages
  url: packages/navistone-packages.yml
- type: Plans
  url: plans/navistone-plans-pricing.yml
- type: RateLimits
  url: rate-limits/navistone-rate-limits.yml
- type: StatusPage
  url: https://status.navistone.com
- type: GitHubOrganization
  url: https://github.com/navistone
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 5
  pass: local-v1