Wunderkind

Wunderkind, formerly known as BounceX, provides an autonomous marketing platform that leverages AI-driven decisioning to personalize consumer experiences and drive revenue for ecommerce brands. The platform offers identity resolution, audience segmentation, and real‑time data activation across web, email, and advertising channels, helping marketers deliver targeted content and improve conversion rates.

Wunderkind publishes 5 APIs on the APIs.io network, including Contacts API, Createcontactactivities API, Id Resolution API, and 2 more. Tagged areas include Marketing, Artificial Intelligence, E-Commerce, Personalization, and Identity.

The Wunderkind catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Wunderkind’s developer surface includes changelog, authentication, support, engineering blog, API reference, getting-started guide, documentation, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub
36.2/100 thin Agent 31/100 agent ready Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0
5 APIs
MarketingArtificial IntelligenceE-CommercePersonalizationIdentity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0
Composite quality — 36.2/100 · thin
Contract Quality 4.8 / 19
Developer Ergonomics 8.2 / 15
Access Clarity 3.2 / 15
Operational Transparency 3.1 / 10
Contract Governance 2.0 / 9
Discoverability 5.6 / 8
Regulatory Posture 3.4 / 15
Create-or-Update Ergonomics 0.0 / 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 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 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 6 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 6 / 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/bouncex: 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 5

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

Wunderkind Contacts API

The Contacts API from Wunderkind — 1 operation(s) for contacts.

Wunderkind Createcontactactivities API

The Createcontactactivities API from Wunderkind — 1 operation(s) for createcontactactivities.

Wunderkind Id Resolution API

The Id Resolution API from Wunderkind — 2 operation(s) for id resolution.

Wunderkind Interaction API

The Interaction API from Wunderkind — 1 operation(s) for interaction.

Wunderkind Text API

The Text API from Wunderkind — 6 operation(s) for text.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Bouncex Context

12 classes · 33 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Wunderkind API Rules

12 rules · 9 errors 2 warnings 1 info

SPECTRAL

JSON Schema 6

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

PostContactsV1AddressesEmailSearchRequest

2 properties

JSON SCHEMA

PostCreatecontactactivitiesRequest

15 properties

JSON SCHEMA

PostInteractionV1EventsRequest

3 properties

JSON SCHEMA

PostTextBulkMessageSendResponse

2 properties

JSON SCHEMA

PostTextMessageSendRequest

6 properties

JSON SCHEMA

PostTextSubscriptionStatusResponse

2 properties

JSON SCHEMA

Security Posture 2

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

Bouncex Authentication

1 scheme

SECURITY

Bouncex Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference
APIReference
 Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral
Spectral
 JSONLD
JSONLD
 Vocabulary
Vocabulary
 DataModel
DataModel
 Conformance
Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

SDKs
SDKs

Access & Security 4

Authentication, authorization, and security posture

Authentication
Authentication
 SecurityTxt
SecurityTxt
 SecurityTxt
SecurityTxt
 DomainSecurity
DomainSecurity

Operate 4

Status, limits, changes, and where to get help

ChangeLog
ChangeLog
 Support
Support
 StatusPage
StatusPage
 ChangeLog
ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Blog
Blog
 Website
Website

Other 2

Properties that don't map to a standard resource type

Hosts
Hosts
 Vendors
Vendors

Source (apis.yml)

apis.yml Raw ↑ 
aid: bouncex
name: Wunderkind
description: Wunderkind, formerly known as BounceX, provides an autonomous marketing platform that leverages AI-driven decisioning
  to personalize consumer experiences and drive revenue for ecommerce brands. The platform offers identity resolution, audience
  segmentation, and real‑time data activation across web, email, and advertising channels, helping marketers deliver targeted
  content and improve conversion rates.
url: https://raw.githubusercontent.com/api-evangelist/bouncex/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-03 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-03'
modified: '2026-10-03'
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-04
tags:
- Marketing
- Artificial Intelligence
- E-Commerce
- Personalization
- Identity
tags_raw:
- Marketing
- AI
- E-commerce
- Personalization
- Identity
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/bouncex-rules.yml
- type: JSONLD
  url: json-ld/bouncex-context.jsonld
- type: Vocabulary
  url: vocabulary/bouncex-vocabulary.yml
- type: DataModel
  url: data-model/bouncex-data-model.yml
- type: ChangeLog
  url: changelog/bouncex-changelog.yml
- type: Authentication
  url: authentication/bouncex-authentication.yml
- type: Conformance
  url: conformance/bouncex-conformance.yml
- type: LLMsTxt
  url: llms/bouncex-llms.txt
- type: SecurityTxt
  url: well-known/bouncex-support-security.txt
- type: SecurityTxt
  url: well-known/bouncex-status-security.txt
- type: WellKnown
  url: well-known/bouncex-well-known.yml
- type: Hosts
  url: hosts/bouncex-hosts.yml
- type: Vendors
  url: vendors/bouncex-vendors.yml
- type: TermsOfService
  url: https://www.wunderkind.co/terms
- type: Support
  url: https://support.wunderkind.co/hc/en-us
- type: StatusPage
  url: https://status.wunderkind.co/
- type: SDKs
  url: https://www.wunderkind.co/terms/sdk/
- type: PrivacyPolicy
  url: https://www.wunderkind.co/privacy
- type: ChangeLog
  url: https://developer.wunderkind.co/changelog
- type: Blog
  url: https://www.wunderkind.co/blog
- type: APIReference
  url: https://developer.wunderkind.co/reference
- type: GettingStarted
  url: https://developer.wunderkind.co/docs/msdk-getting-started
- type: Documentation
  url: https://developer.wunderkind.co/
- type: DomainSecurity
  url: security/bouncex-domain-security.yml
- type: Website
  url: https://www.wunderkind.co/
apis:
- aid: bouncex:bouncex-contacts-api
  name: Wunderkind Contacts API
  description: The Contacts API from Wunderkind — 1 operation(s) for contacts.
  humanURL: https://developer.wunderkind.co/reference
  baseURL: https://api.wknd.ai
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/bouncex-contacts-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bouncex-post-createcontactactivities-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-bulk-message-send-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-interaction-v1-events-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-contacts-v1-addresses-email-search-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-subscription-status-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-message-send-request-schema.json
- aid: bouncex:bouncex-createcontactactivities-api
  name: Wunderkind Createcontactactivities API
  description: The Createcontactactivities API from Wunderkind — 1 operation(s) for createcontactactivities.
  humanURL: https://developer.wunderkind.co/reference
  baseURL: https://api.wknd.ai
  tags:
  - Createcontactactivities
  properties:
  - type: OpenAPI
    url: openapi/bouncex-createcontactactivities-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bouncex-post-createcontactactivities-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-bulk-message-send-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-interaction-v1-events-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-contacts-v1-addresses-email-search-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-subscription-status-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-message-send-request-schema.json
- aid: bouncex:bouncex-id-resolution-api
  name: Wunderkind Id Resolution API
  description: The Id Resolution API from Wunderkind — 2 operation(s) for id resolution.
  humanURL: https://developer.wunderkind.co/reference
  baseURL: https://api.wknd.ai
  tags:
  - Id Resolution
  properties:
  - type: OpenAPI
    url: openapi/bouncex-id-resolution-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bouncex-post-createcontactactivities-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-bulk-message-send-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-interaction-v1-events-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-contacts-v1-addresses-email-search-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-subscription-status-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-message-send-request-schema.json
- aid: bouncex:bouncex-interaction-api
  name: Wunderkind Interaction API
  description: The Interaction API from Wunderkind — 1 operation(s) for interaction.
  humanURL: https://developer.wunderkind.co/reference
  baseURL: https://api.wknd.ai
  tags:
  - Interaction
  properties:
  - type: OpenAPI
    url: openapi/bouncex-interaction-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bouncex-post-createcontactactivities-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-bulk-message-send-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-interaction-v1-events-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-contacts-v1-addresses-email-search-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-subscription-status-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-message-send-request-schema.json
- aid: bouncex:bouncex-text-api
  name: Wunderkind Text API
  description: The Text API from Wunderkind — 6 operation(s) for text.
  humanURL: https://developer.wunderkind.co/reference
  baseURL: https://api.wknd.ai
  tags:
  - Text
  properties:
  - type: OpenAPI
    url: openapi/bouncex-text-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bouncex-post-createcontactactivities-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-bulk-message-send-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-interaction-v1-events-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-contacts-v1-addresses-email-search-request-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-subscription-status-response-schema.json
  - type: JSONSchema
    url: json-schema/bouncex-post-text-message-send-request-schema.json
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-03'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://developer.wunderkind.co/mcp
    status: 401
  - url: https://www.wunderkind.co/mcp
    status: 403
  - url: https://hello.wunderkind.co/mcp
    status: 403
  - url: https://forgeglobal.com/bouncex_stock/
    status: null
x-enrichment:
  date: '2026-10-03'
  status: enriched
  artifacts_added: 27
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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