# Functions

These methods allow you to create and manage functions on your Neon branches.

## Operations

| Method | Path | Operation |
| --- | --- | --- |
| `GET` | `/projects/{project_id}/branches/{branch_id}/custom-domains` | [List the custom domains on a branch](../listprojectbranchcustomdomains.md) |
| `POST` | `/projects/{project_id}/branches/{branch_id}/custom-domains` | [Register a custom domain on a branch](../registerprojectbranchcustomdomain.md) |
| `DELETE` | `/projects/{project_id}/branches/{branch_id}/custom-domains/{domain}` | [Delete a custom domain from a branch](../deleteprojectbranchcustomdomain.md) |
| `GET` | `/projects/{project_id}/branches/{branch_id}/functions` | [List functions on the branch](../listprojectbranchfunctions.md) |
| `DELETE` | `/projects/{project_id}/branches/{branch_id}/functions/{slug}` | [Delete a function on the branch](../deleteprojectbranchfunction.md) |
| `GET` | `/projects/{project_id}/branches/{branch_id}/functions/{slug}` | [Get function details](../getprojectbranchfunction.md) |
| `PATCH` | `/projects/{project_id}/branches/{branch_id}/functions/{slug}` | [Update a function](../updateprojectbranchfunction.md) |
| `POST` | `/projects/{project_id}/branches/{branch_id}/functions/{slug}/deployments` | [Deploy code to a function](../createprojectbranchfunctiondeployment.md) |
| `GET` | `/projects/{project_id}/branches/{branch_id}/triggers` | [List triggers on the branch](../listprojectbranchtriggers.md) |
| `POST` | `/projects/{project_id}/branches/{branch_id}/triggers` | [Create a trigger](../createprojectbranchtrigger.md) |
| `DELETE` | `/projects/{project_id}/branches/{branch_id}/triggers/{trigger_id}` | [Delete a trigger](../deleteprojectbranchtrigger.md) |
| `GET` | `/projects/{project_id}/branches/{branch_id}/triggers/{trigger_id}` | [Get a trigger](../getprojectbranchtrigger.md) |
| `PATCH` | `/projects/{project_id}/branches/{branch_id}/triggers/{trigger_id}` | [Update a trigger](../updateprojectbranchtrigger.md) |

## Related pages

- [Accept a project transfer request](../acceptprojecttransferrequest.md)
- [Add an OAuth provider](../addneonauthoauthprovider.md)
- [Add an OAuth provider](../addbranchneonauthoauthprovider.md)
- [Add domain to redirect_uri whitelist](../addbranchneonauthtrusteddomain.md)
- [Add JWKS URL](../addprojectjwks.md)
- [Add trusted redirect URI domain](../addneonauthdomaintoredirecturiwhitelist.md)
- [AI Gateway](./ai-gateway.md)
- [API Key](./api-key.md)
- [Assign or update VPC endpoint](../assignorganizationvpcendpoint.md)
- [Auth](./auth.md)

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