# Kann KI das? API

**Canonical:** https://apis.io/apis/kannkidas-de/kann-ki-das-api/  
**Provider:** Kann KI das? Sponsoring Agent — https://apis.io/providers/kannkidas-de/  
**Base URL:** https://kannkidas.de/api  
**Documentation:** https://kannkidas.de/agents/

Kann KI das? API is one of 3 APIs that [Kann KI das? Sponsoring Agent](https://apis.io/providers/kannkidas-de/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 1 JSON Schema definition. Tagged areas include Search, Sponsoring, Checkout, Authentication, and x402. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, authentication docs, pricing, and 1 JSON Schema.

Faceted product and category search over the published build-or-buy analyses, suggestions and nearest-neighbour products, live availability of the ten fixed sponsor slots, anonymous OAuth 2.0 client registration and client-credentials token issuance, and a buyer-confirmed, idempotent Stripe hosted Checkout for a sponsor placement, plus an x402 v2 testnet demo endpoint. Nine operations, OpenAPI 3.1.1, served from https://kannkidas.de/api.

## Operations (9)

| Method | Path | Summary |
|---|---|---|
| GET | `/search` | Search and facet products and categories |
| GET | `/search/suggestions` | Suggest products, categories and repeated successful queries |
| GET | `/search/similar` | Return three nearest-neighbor products |
| GET | `/slots` | List live sponsor-slot availability |
| GET | `/v1` | Fetch a sponsor buyer brief through x402 |
| POST | `/agent/register` | Register an OAuth client for an agent |
| POST | `/oauth/token` | Issue an opaque access token using client credentials |
| POST | `/agent/purchases` | Create an idempotent Stripe Checkout Session |
| GET | `/agent/purchases/{purchase_id}` | Read a purchase without exposing buyer PII |

## Machine-readable artifacts (22)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/openapi/kannkidas-de-openapi.yml
- **OpenAPI** — https://kannkidas.de/openapi.json
- **Documentation** — https://kannkidas.de/agents/
- **APIReference** — https://kannkidas.de/openapi.json
- **GettingStarted** — https://kannkidas.de/AGENTS.md
- **Authentication** — https://kannkidas.de/auth.md
- **Pricing** — https://kannkidas.de/pricing.md
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/json-schema/kannkidas-de-agent-purchase.json
- **Examples** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/examples/kannkidas-de-list-sponsor-slots-example.json
- **Examples** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/examples/kannkidas-de-search-products-example.json
- **Examples** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/examples/kannkidas-de-x402-buyer-brief-402-example.json
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/overlays/kannkidas-de-openapi-overlay.yaml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/conventions/kannkidas-de-conventions.yml
- **Idempotency** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/conventions/kannkidas-de-conventions.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/errors/kannkidas-de-problem-types.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/data-model/kannkidas-de-data-model.yml
- **RateLimits** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/rate-limits/kannkidas-de-rate-limits.yml
- **Plans** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/plans/kannkidas-de-plans-pricing.yml
- **Sandbox** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/sandbox/kannkidas-de-sandbox.yml
- **Lifecycle** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/lifecycle/kannkidas-de-lifecycle.yml
- **Conformance** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/conformance/kannkidas-de-conformance.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/kannkidas-de/refs/heads/main/apis.yml

## Other Kann KI das? Sponsoring Agent APIs (2)

- [Kann KI das? Sponsorship MCP Server](https://apis.io/apis/kannkidas-de/kann-ki-das-sponsorship-mcp-server/)
- [Kann KI das? Sponsoring Agent (A2A)](https://apis.io/apis/kannkidas-de/kann-ki-das-sponsoring-agent-a2a/)

## Tags

Search, Sponsoring, Checkout, Authentication, x402

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/kannkidas-de/kann-ki-das-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/kannkidas-de/.