Whisperr

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 publishes 7 APIs on the APIs.io network, including Whisperr, Inc. Dashboard API, Whisperr, Inc. Decisioning API, Whisperr, Inc. Delivery API, and 4 more. Tagged areas include Company, Customer Retention, Churn, Marketing Automation, and Artificial Intelligence.

Whisperr’s developer surface includes documentation, API reference, getting-started guide, authentication, CLI, engineering blog, signup flow, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub

42.2/100 developing ▬ flat Agent 31/100 agent ready Front door AI 1/6 silent Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

2 APIs

Company Customer Retention Churn Marketing Automation Artificial Intelligence Software-as-a-Service Subscription Customer Engagement Event Ingestion Analytics Customer Data Email Delivery Agents

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 42.2/100 · developing

Contract Quality 9.2 / 19

Developer Ergonomics 10.3 / 15

Access Clarity 0.0 / 15

Operational Transparency 0.3 / 10

Contract Governance 1.6 / 9

Discoverability 5.0 / 8

Regulatory Posture 2.3 / 15

Create-or-Update Ergonomics 7.8 / 10

Agent readiness — 31/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/whisperr-inc: 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 7

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

Whisperr, Inc. Dashboard API

The Dashboard API from Whisperr, Inc. — 23 operation(s) for dashboard.

Whisperr, Inc. Decisioning API

The Decisioning API from Whisperr, Inc. — 1 operation(s) for decisioning.

Whisperr, Inc. Delivery API

The Delivery API from Whisperr, Inc. — 14 operation(s) for delivery.

Whisperr, Inc. Ingestion API

The Ingestion API from Whisperr, Inc. — 2 operation(s) for ingestion.

Whisperr, Inc. Internal API

The Internal API from Whisperr, Inc. — 1 operation(s) for internal.

Whisperr, Inc. System API

The System API from Whisperr, Inc. — 2 operation(s) for system.

Whisperr, Inc. Users API

The Users API from Whisperr, Inc. — 3 operation(s) for users.

Scroll for all 7

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

Idempotency

ErrorCatalog

DataModel

Conformance

Lifecycle

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

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 3

Pricing, plans, and the legal terms of use

License

License

Plans

Plans

TermsOfService

TermsOfService

Company 4

The organization behind the API

Website

Website

Blog

Blog

Twitter

Twitter

LinkedIn

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: whisperr-inc
name: Whisperr
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
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
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: '0.23'
created: '2026-07-17'
modified: '2026-09-16'
tags:
- Company
- Customer Retention
- Churn
- Marketing Automation
- Artificial Intelligence
- Software-as-a-Service
- Subscription
- Customer Engagement
- Event Ingestion
- Analytics
- Customer Data
- Email Delivery
- Agents
tags_raw:
- Company
- Customer Retention
- Churn
- Marketing Automation
- Artificial Intelligence
- SaaS
- Subscription
- Customer Engagement
- Event Ingestion
- Analytics
- Customer Data
- Email Delivery
- Agents
apis:
- aid: whisperr-inc:whisperr-inc-dashboard-api
  name: Whisperr, Inc. Dashboard API
  description: The Dashboard API from Whisperr, Inc. — 23 operation(s) for dashboard.
  humanURL: https://docs.whisperr.net/api/overview/
  baseURL: https://api.whisperr.net
  tags:
  - Dashboards
  tags_raw:
  - Dashboard
  properties:
  - type: OpenAPI
    url: openapi/whisperr-inc-dashboard-api-openapi.yml
  - 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: 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: SDKs
    url: packages/whisperr-inc-packages.yml
  - type: CLI
    url: cli/whisperr-inc-cli.yml
  - type: SourceCode
    url: https://github.com/WhisperrAI/whisperr-spec
- aid: whisperr-inc:whisperr-inc-decisioning-api
  name: Whisperr, Inc. Decisioning API
  description: The Decisioning API from Whisperr, Inc. — 1 operation(s) for decisioning.
  humanURL: https://docs.whisperr.net/api/overview/
  baseURL: https://api.whisperr.net
  tags:
  - Decisioning
  properties:
  - type: OpenAPI
    url: openapi/whisperr-inc-decisioning-api-openapi.yml
  - 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: 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: SDKs
    url: packages/whisperr-inc-packages.yml
  - type: CLI
    url: cli/whisperr-inc-cli.yml
  - type: SourceCode
    url: https://github.com/WhisperrAI/whisperr-spec
- aid: whisperr-inc:whisperr-inc-delivery-api
  name: Whisperr, Inc. Delivery API
  description: The Delivery API from Whisperr, Inc. — 14 operation(s) for delivery.
  humanURL: https://docs.whisperr.net/api/overview/
  baseURL: https://api.whisperr.net
  tags:
  - Delivery
  properties:
  - type: OpenAPI
    url: openapi/whisperr-inc-delivery-api-openapi.yml
  - 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: 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: SDKs
    url: packages/whisperr-inc-packages.yml
  - type: CLI
    url: cli/whisperr-inc-cli.yml
  - type: SourceCode
    url: https://github.com/WhisperrAI/whisperr-spec
- aid: whisperr-inc:whisperr-inc-ingestion-api
  name: Whisperr, Inc. Ingestion API
  description: The Ingestion API from Whisperr, Inc. — 2 operation(s) for ingestion.
  humanURL: https://docs.whisperr.net/api/overview/
  baseURL: https://api.whisperr.net
  tags:
  - Ingestion
  properties:
  - type: OpenAPI
    url: openapi/whisperr-inc-ingestion-api-openapi.yml
  - 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: 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: SDKs
    url: packages/whisperr-inc-packages.yml
  - type: CLI
    url: cli/whisperr-inc-cli.yml
  - type: SourceCode
    url: https://github.com/WhisperrAI/whisperr-spec
- aid: whisperr-inc:whisperr-inc-internal-api
  name: Whisperr, Inc. Internal API
  description: The Internal API from Whisperr, Inc. — 1 operation(s) for internal.
  humanURL: https://docs.whisperr.net/api/overview/
  baseURL: https://api.whisperr.net
  tags:
  - Internal
  properties:
  - type: OpenAPI
    url: openapi/whisperr-inc-internal-api-openapi.yml
  - 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: 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: SDKs
    url: packages/whisperr-inc-packages.yml
  - type: CLI
    url: cli/whisperr-inc-cli.yml
  - type: SourceCode
    url: https://github.com/WhisperrAI/whisperr-spec
- aid: whisperr-inc:whisperr-inc-system-api
  name: Whisperr, Inc. System API
  description: The System API from Whisperr, Inc. — 2 operation(s) for system.
  humanURL: https://docs.whisperr.net/api/overview/
  baseURL: https://api.whisperr.net
  tags:
  - System
  properties:
  - type: OpenAPI
    url: openapi/whisperr-inc-system-api-openapi.yml
  - 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: 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: SDKs
    url: packages/whisperr-inc-packages.yml
  - type: CLI
    url: cli/whisperr-inc-cli.yml
  - type: SourceCode
    url: https://github.com/WhisperrAI/whisperr-spec
- aid: whisperr-inc:whisperr-inc-users-api
  name: Whisperr, Inc. Users API
  description: The Users API from Whisperr, Inc. — 3 operation(s) for users.
  humanURL: https://docs.whisperr.net/api/overview/
  baseURL: https://api.whisperr.net
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/whisperr-inc-users-api-openapi.yml
  - 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: 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: 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: License
  name: MIT
  url: https://github.com/WhisperrAI/whisperr-spec/blob/main/LICENSE
- type: OpenAPI
  url: openapi/_original/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
x-legal-name: Whisperr, Inc.

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curl "https://apis.io/api/v1/providers/whisperr-inc/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/whisperr-inc/evidence"

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