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 15 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.2/100 thin ▬ flat Agent 65/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
8 APIs 1 MCP Servers
CompanyMarketingDirect MailAdvertisingCustomer AcquisitionAudience TargetingMarTechAdTechPostcardsRetargeting

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 37.2/100 · thin
Contract Quality 12.1 / 25
Developer Ergonomics 10.4 / 20
Commercial Clarity 4.7 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 65/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
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 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
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.

NaviStone API Info API

API information and endpoints

NaviStone Campaigns API

Campaign management

NaviStone Clients API

Client management

NaviStone Domains API

Domain management

NaviStone Geo Targeting API

Geographic targeting

NaviStone Health API

Health checks

NaviStone Output API

Output tracking

NaviStone Segments API

Audience segments

Scroll for all 8

Arazzo Workflows 2

Multi-step API workflows described with the Arazzo specification.

_Index

ARAZZO

NaviStone campaign launch

Onboard a client, create a direct-mail campaign, add ZIP geo-targeting, and read output.

ARAZZO

MCP Servers 1

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

navistone-mcp.yml

MCP SERVER

Security Posture 2

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

Navistone Authentication

apiKey · 1 scheme

SECURITY

Navistone Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Navistone Agentic Access

36 operations · 20 acting · 20 human-in-the-loop

36 operations · 20 acting

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
AgenticAccess
 MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 DataModel
DataModel
 Conformance
Conformance
 Lifecycle
Lifecycle
 Arazzo
Arazzo

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

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)

apis.yml Raw ↑ 
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: '2026-07-20'
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
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 1
  pass: local-v1