Whisperr, Inc.

Whisperr, Inc. builds an autonomous customer-retention platform that detects churn risk and acts on it automatically, without a lifecycle marketing team operating campaigns. Whisperr combines behavioral intelligence, autonomous decisioning, and AI-generated content to spot at-risk customers and deliver interventions in under ten seconds. It serves SaaS, DTC and subscription-commerce, and mobile-game businesses, and publishes churn calculators plus a voice retention agent (Whisperr Recall). Whisperr is a 500 Global portfolio company. It publishes a real developer surface: an OpenAPI 3.0.3 document served at https://api.whisperr.net/openapi.json, a documented three-endpoint ingestion API (track, batch, identify) authenticated with a publishable wrk_ key, ten first-party SDKs spanning JavaScript, Python, PHP, .NET, Dart and Swift, an agentic integration CLI (npx @whisperr/wizard), and a public wire-contract repository whose executable conformance fixtures every SDK runs in CI.

Whisperr, Inc. publishes 1 API on the APIs.io network: Whisperr Runtime API. Tagged areas include Company, Customer Retention, Churn, Marketing Automation, and Artificial Intelligence.

Whisperr, Inc.’s developer surface includes documentation, API reference, getting-started guide, authentication, CLI, engineering blog, signup flow, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub
41.1/100 thin ▲ 30.9 Agent 41/100 agent ready Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0
1 APIs
CompanyCustomer RetentionChurnMarketing AutomationArtificial IntelligenceSaaSSubscriptionCustomer EngagementEvent IngestionAnalyticsCustomer DataEmail DeliveryAgents

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0
Composite quality — 41.1/100 · thin
Contract Quality 12.1 / 25
Developer Ergonomics 13.5 / 20
Commercial Clarity 4.7 / 20
Operational Transparency 0.7 / 13
Governance 2.5 / 12
Discoverability 7.6 / 10
Agent readiness — 41/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 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/whisperr-inc: 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 1

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

Whisperr Runtime API

The Whisperr runtime surface. Six public operations authenticated with a publishable per-app ingestion key (wrk_ prefix): track a single event, track a batch of up to 500, ident...

Pricing Plans 1

Published pricing tiers and plan structures.

Whisperr Inc Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Whisperr Inc Rate Limits

0 limits

RATE LIMITS

JSON Schema 3

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

Whisperr behavior conformance cases

4 properties

JSON SCHEMA

Whisperr push-token conformance cases

4 properties

JSON SCHEMA

Whisperr wire conformance cases

4 properties

JSON SCHEMA

Security Posture 2

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

Whisperr Inc Authentication

apiKey/http · 3 schemes

SECURITY

Whisperr Inc Domain Security

TLSv1.3

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

Documentation 3

Reference material describing how the API behaves

OpenAPI
OpenAPI
 Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgentSkill
AgentSkill
 LLMsTxt
LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency
 ErrorCatalog
ErrorCatalog
 DataModel
DataModel
 Conformance
Conformance
 Lifecycle
Lifecycle

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs
 CLI
CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 TermsOfService
TermsOfService

Company 4

The organization behind the API

Website
Website
 Blog
Blog
 Twitter
Twitter
 LinkedIn
LinkedIn

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: whisperr-inc
name: Whisperr, Inc.
description: 'Whisperr, Inc. builds an autonomous customer-retention platform that detects churn risk and acts on it automatically,
  without a lifecycle marketing team operating campaigns. Whisperr combines behavioral intelligence, autonomous decisioning,
  and AI-generated content to spot at-risk customers and deliver interventions in under ten seconds. It serves SaaS, DTC and
  subscription-commerce, and mobile-game businesses, and publishes churn calculators plus a voice retention agent (Whisperr
  Recall). Whisperr is a 500 Global portfolio company. It publishes a real developer surface: an OpenAPI 3.0.3 document served
  at https://api.whisperr.net/openapi.json, a documented three-endpoint ingestion API (track, batch, identify) authenticated
  with a publishable wrk_ key, ten first-party SDKs spanning JavaScript, Python, PHP, .NET, Dart and Swift, an agentic integration
  CLI (npx @whisperr/wizard), and a public wire-contract repository whose executable conformance fixtures every SDK runs in
  CI.'
url: https://raw.githubusercontent.com/api-evangelist/whisperr-inc/refs/heads/main/apis.yml
accessModel:
  pricing: unpublished
  onboarding: request-access
  trial: false
  try_now: false
  public: true
  label: Public API, unpublished pricing
  confidence: high
  source:
  - https://api.whisperr.net/openapi.json
  - https://docs.whisperr.net/api/overview/
  - https://whisperr.net/get-access
  generated: '2026-08-13'
  method: searched
image: https://whisperr.net/whisperrlogo.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: profiled
x-tier-reason: public-openapi-and-sdks
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Company
- Customer Retention
- Churn
- Marketing Automation
- Artificial Intelligence
- SaaS
- Subscription
- Customer Engagement
- Event Ingestion
- Analytics
- Customer Data
- Email Delivery
- Agents
apis:
- name: Whisperr Runtime API
  description: 'The Whisperr runtime surface. Six public operations authenticated with a publishable per-app ingestion key
    (wrk_ prefix): track a single event, track a batch of up to 500, identify a user with traits and contact channels, read
    a user and their computed state, and preview a retention decision without dispatching it. The served document additionally
    describes 44 dashboard operations behind a Supabase JWT console session, an internal onboarding import, and an inbound
    Postmark delivery webhook. Delivery is at-least-once with per-event idempotency via context.$message_id, and the API validates
    strictly — unknown fields are rejected rather than ignored.'
  humanURL: https://docs.whisperr.net/api/overview/
  baseURL: https://api.whisperr.net
  tags:
  - Event Ingestion
  - Customer Data
  - Churn
  - Decisioning
  properties:
  - type: OpenAPI
    url: openapi/whisperr-inc-runtime-openapi.json
  - type: Documentation
    url: https://docs.whisperr.net/
  - type: APIReference
    url: https://docs.whisperr.net/api/overview/
  - type: Authentication
    url: authentication/whisperr-inc-authentication.yml
  - type: Conventions
    url: conventions/whisperr-inc-conventions.yml
  - type: Idempotency
    url: conventions/whisperr-inc-conventions.yml
  - type: ErrorCatalog
    url: errors/whisperr-inc-problem-types.yml
  - type: RateLimits
    url: rate-limits/whisperr-inc-rate-limits.yml
  - type: DataModel
    url: data-model/whisperr-inc-data-model.yml
  - type: Overlay
    url: overlays/whisperr-inc-runtime-overlay.yaml
  - type: Conformance
    url: conformance/whisperr-inc-conformance.yml
  - type: Lifecycle
    url: lifecycle/whisperr-inc-lifecycle.yml
  - type: JSONSchema
    url: json-schema/whisperr-inc-wire.schema.json
  - type: JSONSchema
    url: json-schema/whisperr-inc-behavior.schema.json
  - type: JSONSchema
    url: json-schema/whisperr-inc-push.schema.json
  - type: AgentSkill
    url: skills/_index.yml
  - type: SDKs
    url: packages/whisperr-inc-packages.yml
  - type: CLI
    url: cli/whisperr-inc-cli.yml
  - type: SourceCode
    url: https://github.com/WhisperrAI/whisperr-spec
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 23
  pass: local-v1
common:
- type: OpenAPI
  url: openapi/whisperr-inc-runtime-openapi.json
- type: DeveloperPortal
  url: https://docs.whisperr.net/
- type: Documentation
  url: https://docs.whisperr.net/
- type: APIReference
  url: https://docs.whisperr.net/api/overview/
- type: GettingStarted
  url: https://docs.whisperr.net/
- type: GitHubOrganization
  url: https://github.com/WhisperrAI
- type: Authentication
  url: authentication/whisperr-inc-authentication.yml
- type: Conventions
  url: conventions/whisperr-inc-conventions.yml
- type: Idempotency
  url: conventions/whisperr-inc-conventions.yml
- type: ErrorCatalog
  url: errors/whisperr-inc-problem-types.yml
- type: RateLimits
  url: rate-limits/whisperr-inc-rate-limits.yml
- type: DataModel
  url: data-model/whisperr-inc-data-model.yml
- type: Overlay
  url: overlays/whisperr-inc-runtime-overlay.yaml
- type: Conformance
  url: conformance/whisperr-inc-conformance.yml
- type: Lifecycle
  url: lifecycle/whisperr-inc-lifecycle.yml
- type: Packages
  url: packages/whisperr-inc-packages.yml
- type: SDKs
  url: packages/whisperr-inc-packages.yml
- type: CLI
  url: cli/whisperr-inc-cli.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/whisperr-inc-llms.txt
- type: Plans
  url: plans/whisperr-inc-plans-pricing.yml
- type: DomainSecurity
  url: security/whisperr-inc-domain-security.yml
- type: Website
  url: https://whisperr.net
- type: Blog
  url: https://whisperr.net/blog
- type: TermsOfService
  url: https://whisperr.net/terms
- type: SignUp
  url: https://whisperr.net/get-access
- type: Twitter
  url: https://twitter.com/whisperrai
- type: LinkedIn
  url: https://www.linkedin.com/company/whisperrai