# Kardinal Webhook API

**Canonical:** https://apis.io/apis/kardinal/kardinal-webhook-api/  
**Provider:** Kardinal — https://apis.io/providers/kardinal/  
**Base URL:** https://app.kardinal.ai/api/v2  
**Documentation:** https://developers.kardinal.ai/

Kardinal Webhook API is one of 3 APIs that [Kardinal](https://apis.io/providers/kardinal/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Webhook. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, and authentication docs.

How to register, retrieve, update, and delete plan webhooks, and inspect their delivery results.

## Operations (6)

| Method | Path | Summary |
|---|---|---|
| POST | `/plans/{planId}/webhooks` | Create a new webhook on a given plan |
| GET | `/plans/{planId}/webhooks` | Retrieve the list of webhooks of a given plan |
| GET | `/plans/{planId}/webhooks/{webhookId}` | Retrieve a single webhook of a given plan |
| PUT | `/plans/{planId}/webhooks/{webhookId}` | Update an existing webhook of a given plan |
| DELETE | `/plans/{planId}/webhooks/{webhookId}` | Delete a single webhook of a given plan |
| GET | `/plans/{planId}/webhooks/{webhookId}/results` | Retrieve the list of results of a webhook of a given plan |

## Machine-readable artifacts (8)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/kardinal/refs/heads/main/openapi/kardinal-webhook-api-openapi.yml
- **Documentation** — https://developers.kardinal.ai/
- **APIReference** — https://developers.kardinal.ai/api-reference/authenticate/request-a-password-token
- **GettingStarted** — https://developers.kardinal.ai/getting-started/first-api-call
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/kardinal/refs/heads/main/authentication/kardinal-authentication.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/kardinal/refs/heads/main/errors/kardinal-error-codes.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/kardinal/refs/heads/main/data-model/kardinal-data-model.yml
- **ToolCrosswalk** — https://raw.githubusercontent.com/api-evangelist/kardinal/refs/heads/main/mcp/kardinal-tool-crosswalk.yml

## Other Kardinal APIs (2)

- [Kardinal Plan API](https://apis.io/apis/kardinal/kardinal-plan-api/)
- [Kardinal Solution API](https://apis.io/apis/kardinal/kardinal-solution-api/)

## Tags

Webhook

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