How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Need help?

Contact us
Knak

Knak Fields API

Create and list custom contact fields (schema metadata).

Documentation Provider Profile APIs.io OpenAPI GitHub

Knak Fields API is one of 27 APIs that Knak publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Fields. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and rate-limit docs.

This API exposes 3 operations across 2 paths, and defines 7 schemas. It is described by OpenAPI 3.2.0, at version V1.

Requests are made against a single base URL, https://send.knak.io/api/public/v1.

3 operations 2 paths 7 schemas 2 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
V1
Base URL
https://send.knak.io/api/public/v1
Authentication
HTTP Bearer
Contact
support@knak.com
Resource Areas
1

Authentication & Security 1

Knak Fields API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (JWT) (bearerAuth). By default, every request must be authenticated.

  • bearerAuth — A bearer token generated through the Enterprise API Access menu.

Paths & Operations 3

Across 2 paths, the API surfaces 3 operations — 2 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Fields 3

Create and list custom contact fields (schema metadata).

GET
/fields
List fields
listFields → 200401403429
POST
/fields
Create a field
createField body → 201401403409422429
GET
/fields/{id}/values
List a field's values
listFieldValues 4 params → 200401403404422429

Schemas 7

The contract defines 7 schemas that model the data the API accepts and returns. The most detailed are PaginationMeta (6 properties), Field (5 properties), FieldInput (2 properties), ErrorList (2 properties). Each schema is shown below with its type and property counts.

FieldType
string
The data type of a field.
HttpError
object
The error shape returned for rate-limit (429) errors.
2 properties
PaginationMeta
object
Pagination metadata describing the current result window.
6 properties
ErrorList
object
The error shape returned for validation and not-found errors.
2 properties
FieldInput
object
The payload used to create a field.
2 properties 2 required
Field
object
A custom contact field (schema metadata).
5 properties
ErrorObject
object
The compact error shape returned for authentication, authorization and conflict errors.
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

knak-fields-api-openapi.yml Raw ↑

Other APIs Knak publishes across the network.

Knak Asset Custom Fieldsets API
AE Profile APIs.io
Knak AssetFolders API
AE Profile APIs.io
Knak Assets API
AE Profile APIs.io
Knak AvailablePlatforms API
AE Profile APIs.io
Knak Brands API
AE Profile APIs.io
Knak Contacts API
AE Profile APIs.io
Knak DAM Assets API
AE Profile APIs.io
Knak Integrations API
AE Profile APIs.io
Knak MarketingPlatformSyncs API
AE Profile APIs.io
Knak MergeTags API
AE Profile APIs.io
Knak Modules API
AE Profile APIs.io
Knak OAuth2 API
AE Profile APIs.io
#Fields
← Back to K APIs
API Details
ID
knak:knak-fields-api
Base URL
https://send.knak.io/api/public/v1
Docs
https://developer.knak.com/api/
Provider
Knak
APIs.io →  GitHub →
Explore more
All APIs Providers APIs.io Network
Work with this as data

Every API here is available over the API and to AI agents over MCP. APIs is not yet its own endpoint on the v1 API. Reach this content through network search and the tag graph, or the MCP server below.

Installs https://mcp.apievangelist.com/mcp in Claude, Cursor, VS Code and the rest — one button, every client.

MCP tools for apis
4 tools reach this content
  • search_api_evangelistSearch every content type across the network at once.
  • find_relatedThe shared-tag relevance graph — what else covers this.
  • get_tagEverything one tag labels, across all content types.
  • guide_topicPRO — a curated bundle for a topic: area, guidance, rules, papers, stories, services.
All tools & prompts
Call it yourself
curl for this page
Search the network for this 
curl "https://api.apievangelist.com/v1/search?q=knak-fields-api&limit=10"
Everything under a tag 
curl "https://api.apievangelist.com/v1/tags/knak-fields-api"

Discovery needs no key. Full bodies and the synthesis endpoints are Pro.

Get an API key

Free tier, no email required. Sign in with whichever identity you already have.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have. Your account

Where this information came from

This is an independent, third-party profile of Knak Fields API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.