# Sendlane Custom Fields API

**Canonical:** https://apis.io/apis/sendlane/sendlane-custom-fields-api/  
**Provider:** Sendlane — https://apis.io/providers/sendlane/  
**Base URL:** https://api.sendlane.com/v2  
**Documentation:** https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview

Sendlane Custom Fields API is one of 14 APIs that [Sendlane](https://apis.io/providers/sendlane/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Custom Fields. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, rate-limit docs, and authentication docs.

The Custom Fields API from Sendlane — 2 operation(s) for custom fields.

## Operations (4)

| Method | Path | Summary |
|---|---|---|
| GET | `/custom-fields` | Get Custom Fields |
| POST | `/custom-fields` | Create Custom Field |
| GET | `/custom-fields/{customFieldId}` | Get Custom Field |
| PATCH | `/custom-fields/{customFieldId}` | Update Custom Field |

## Machine-readable artifacts (8)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/sendlane/refs/heads/main/openapi/sendlane-custom-fields-api-openapi.yml
- **Documentation** — https://sendlane.stoplight.io/docs/api-documentation/c53add3c8b16f-overview
- **APIReference** — https://sendlane.stoplight.io/docs/api-documentation/267c762bd945b-api-reference
- **PostmanCollection** — https://www.postman.com/sendlane/sendlane-s-public-workspace/documentation/xl7jbbs/sendlane-api
- **RateLimits** — https://sendlane.stoplight.io/docs/api-documentation/80256ed7dae2a-rate-limits
- **Authentication** — https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY2OQ-authentication
- **ErrorCodes** — https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjQwMjk2NTQ-responses
- **Pagination** — https://sendlane.stoplight.io/docs/api-documentation/ZG9jOjk3NDY3MA-pagination

## Other Sendlane APIs (12)

- [Sendlane Automations API](https://apis.io/apis/sendlane/sendlane-automations-api/)
- [Sendlane Campaigns API](https://apis.io/apis/sendlane/sendlane-campaigns-api/)
- [Sendlane Contacts API](https://apis.io/apis/sendlane/sendlane-contacts-api/)
- [Sendlane Custom Integration Events API](https://apis.io/apis/sendlane/sendlane-custom-integration-events-api/)
- [Sendlane Custom Integration Webhooks API](https://apis.io/apis/sendlane/sendlane-custom-integration-webhooks-api/)
- [Sendlane Custom Integrations API](https://apis.io/apis/sendlane/sendlane-custom-integrations-api/)
- [Sendlane List Contacts API](https://apis.io/apis/sendlane/sendlane-list-contacts-api/)
- [Sendlane Lists API](https://apis.io/apis/sendlane/sendlane-lists-api/)
- [Sendlane Segments API](https://apis.io/apis/sendlane/sendlane-segments-api/)
- [Sendlane Senders API](https://apis.io/apis/sendlane/sendlane-senders-api/)
- [Sendlane SMS API](https://apis.io/apis/sendlane/sendlane-sms-api/)
- [Sendlane Suppression API](https://apis.io/apis/sendlane/sendlane-suppression-api/)

## Tags

Custom Fields

---

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