# Fello API

## Docs

- [Authentication](https://docs.fello.ai/api-reference/authentication.md): All Fello APIs require an x-api-key header to authenticate your requests.
- [Add Contact](https://docs.fello.ai/api-reference/endpoint/contact/add_contact.md): Creates a new contact in Fello.
- [Add Tags](https://docs.fello.ai/api-reference/endpoint/contact/add_tag.md): Adds tags to a contact in Fello.
- [Get Contact Details](https://docs.fello.ai/api-reference/endpoint/contact/get_by_id.md): Receive details about a contact in Fello, including their basic information, activity details, and more.
- [Delete Contact](https://docs.fello.ai/api-reference/endpoint/contact/remove.md): Deletes a contact in Fello.
- [Remove Tags](https://docs.fello.ai/api-reference/endpoint/contact/remove_tag.md): Removes tags from a contact in Fello.
- [Replace Tags](https://docs.fello.ai/api-reference/endpoint/contact/replace_tag.md): Removes all currently added tags for a contact and adds new tags.
- [Update Contact](https://docs.fello.ai/api-reference/endpoint/contact/update.md): Updates details for a contact in Fello.
- [Add Property](https://docs.fello.ai/api-reference/endpoint/property/add_property.md): Adds property details for a contact in Fello.
- [Archive Property](https://docs.fello.ai/api-reference/endpoint/property/archive_property_by_id.md): Archives a contact's property in Fello.
- [Subscribe Webhook](https://docs.fello.ai/api-reference/endpoint/webhooks/add.md): Subscribes to a webhook to receive event data from Fello.
- [List Webhooks](https://docs.fello.ai/api-reference/endpoint/webhooks/list.md): Lists the event webhooks that you're currently subscribed to.
- [Unsubscribe Webhook](https://docs.fello.ai/api-reference/endpoint/webhooks/remove.md): Unsubscribes from an event webhook that you're subscribed to.
- [Error Responses](https://docs.fello.ai/api-reference/error_responses.md): Learn about the different reasons API requests might fail or return error codes.
- [Failure Handling](https://docs.fello.ai/api-reference/failure_handling.md)
- [Introduction](https://docs.fello.ai/api-reference/introduction.md): Welcome to Fello’s API documentation! Here, you’ll find everything you need to build powerful integrations with our platform. Our API endpoints make it simple and secure to update records in Fello and receive real-time events whenever required.
- [Rate Limiting](https://docs.fello.ai/api-reference/rate_limiting.md): Fello enforces a per-client rate limit on incoming API requests to maintain a stable and reliable service. Exceeding these limits will result in a 429 Too Many Requests response, at which point clients should implement back-off strategies or queue future requests.
- [Webhooks](https://docs.fello.ai/api-reference/webhooks.md): Webhooks allow you to automatically receive real-time event data from Fello, without needing to continuously poll for changes. This is done by sending JSON data from Fello to your specified URL whenever certain events occur. For example, when a contact submits a form, a FormSubmission event triggers…

## OpenAPI Specs

- [openapi](https://docs.fello.ai/api-reference/openapi.json)

## Optional

- [Help Center](https://fello.ai/knowledge)
- [Academy](https://academy.hifello.com/)
- [Support](https://fello.ai/knowledge/kb-tickets/new)
- [Integrations](https://integrations.fello.ai/)