Overview
Auth
- POSTCreate a new API key for the authenticated tenant.
- GETList all API keys for the authenticated tenant.
- GETGet details of a specific API key.
- POSTRotate an API key. Creates a new key and revokes the old one.
- DELRevoke an API key. The key is immediately invalidated.
- GETGet information about the authenticated tenant.
- PATCHUpdate tenant information (name).
- GETList audit log entries for the authenticated tenant.
- POSTCreate a Stripe Checkout session for tenant provisioning.
- GETRetrieve a provisioned API key after Stripe Checkout. The claim token (checkout session ID) acts as the access credential. One-time retrieval only — the key cannot be shown again.
Contacts
- GETList contacts with optional filtering by kind, search query, and pagination.
- POSTCreate a new contact.
- GETGet a contact by ID with all related data (channels, addresses, dates, tags, affiliations).
- PUTUpdate a contact.
- DELSoft-delete a contact.
- GETFind a contact by communication channel (type + value).
- POSTAdd a communication channel to a contact.
- DELRemove a communication channel from a contact.
- POSTAdd a postal address to a contact.
- PUTUpdate a postal address.
- DELRemove a postal address from a contact.
- POSTAdd a significant date to a contact (birthday, anniversary, etc.).
- PUTUpdate a significant date.
- DELRemove a significant date from a contact.
- GETList relationships for a contact.
- POSTAdd a relationship between two contacts.
- DELRemove a relationship.
- GETList organizational affiliations for a contact.
- POSTAdd an organizational affiliation to a contact.
- DELRemove an organizational affiliation.
- GETList interactions for a contact.
- POSTLog an interaction with a contact.
- POSTAdd a tag to a contact.
- DELRemove a tag from a contact.
- GETList all contact tag definitions for the tenant.
- POSTCreate a new contact tag definition.
- GETList all contact groups for the tenant.
- POSTCreate a new contact group.
- DELDelete a contact group.
- GETList members of a contact group.
- POSTAdd a contact to a group.
- DELRemove a contact from a group.
- GETList all relationship types for the tenant.
CRM
- GETList all CRM pipelines with their stages.
- POSTCreate a new pipeline, optionally with initial stages.
- GETGet a pipeline by ID with its stages.
- PUTUpdate a pipeline.
- DELDelete a pipeline (soft delete).
- POSTSet a pipeline as the default.
- GETList stages in a pipeline.
- POSTCreate a new stage in a pipeline.
- PUTReorder stages in a pipeline.
- PUTUpdate a stage.
- DELDelete a stage from a pipeline.
- GETGet a pipeline summary with deal counts and values per stage.
- GETList deals with optional filtering.
- POSTCreate a new deal.
- GETGet a deal by ID with pipeline, stage, and contact details.
- PUTUpdate a deal.
- DELDelete a deal (soft delete).
- POSTMove a deal to a different stage. Records a stage change audit entry.
- GETGet stage change history for a deal.
- GETList contacts associated with a deal.
- POSTAssociate a contact with a deal.
- DELRemove a contact from a deal.
- POSTAdd a tag to a deal.
- DELRemove a tag from a deal.
- GETList all CRM tag definitions.
- POSTCreate a new CRM tag definition.
Tasks
- GETList projects with optional filtering.
- POSTCreate a new project.
- GETGet a project by ID with statuses, sections, milestones, and counts.
- PUTUpdate a project.
- DELDelete a project (soft delete).
- GETList custom statuses for a project.
- POSTAdd a custom status to a project.
- PUTUpdate a project status.
- DELRemove a status from a project.
- GETList sections in a project.
- POSTAdd a section to a project.
- PUTUpdate a project section.
- DELRemove a section from a project.
- GETList milestones in a project.
- POSTAdd a milestone to a project.
- PUTUpdate a milestone.
- DELRemove a milestone.
- GETList members of a project.
- POSTAdd a member to a project.
- DELRemove a member from a project.
- GETList tasks with optional filtering.
- POSTCreate a new task.
- GETGet a task by ID with labels, dependency/link/comment counts.
- PUTUpdate a task.
- DELDelete a task (soft delete).
- GETGet a task by its human-readable identifier (e.g., PROJ-42).
- GETList overdue tasks.
- POSTMark a task as complete.
- POSTCancel a task.
- GETList subtasks of a task.
- GETList dependencies of a task.
- POSTAdd a dependency to a task.
- DELRemove a dependency from a task.
- GETList comments on a task.
- POSTAdd a comment to a task.
- PUTUpdate a task comment.
- POSTAdd a label to a task.
- DELRemove a label from a task.
- GETList cross-domain links for a task.
- POSTAdd a cross-domain link to a task.
- DELRemove a cross-domain link from a task.
- GETList all task label definitions for the tenant.
- POSTCreate a new task label definition.
Calendar
- GETList calendars for the authenticated tenant.
- POSTCreate a new calendar.
- GETGet a calendar by ID.
- PUTUpdate a calendar.
- DELDelete a calendar (soft delete).
- GETList events with optional filtering by date range, calendar, and type.
- POSTCreate a new event.
- GETGet an event by ID with attendees and links.
- PUTUpdate an event.
- DELDelete an event (soft delete).
- GETFull-text search across events.
- POSTAdd an attendee to an event.
- PUTUpdate an attendee's RSVP status.
- DELRemove an attendee from an event.
- POSTAdd a cross-domain link to an event.
- DELRemove a cross-domain link from an event.
Notes
- GETList all notebooks for the tenant with note counts.
- POSTCreate a new notebook.
- GETGet a notebook by ID with note count.
- PUTUpdate a notebook.
- DELDelete a notebook (soft delete).
- GETList notes with optional filtering by notebook, tag, and search.
- POSTCreate a new note.
- GETGet a note by ID with tags and link counts.
- PUTUpdate a note.
- DELDelete a note (soft delete).
- GETList outgoing links from a note.
- POSTAdd a link from a note to another entity.
- DELRemove a link from a note.
- GETList notes that link to a given note (backlinks).
- GETList notes that link to any entity (cross-domain backlinks).
- POSTAdd a tag to a note (creates the tag if it does not exist).
- DELRemove a tag from a note.
- GETList attachments for a note.
- POSTAdd an attachment to a note.
- DELRemove an attachment from a note.
- GETList all note tag definitions for the tenant.
- POSTCreate a new note tag definition.
Billing & Usage
Health
- GETHealth check — verifies database and Redis connectivity. Returns 200 if all checks pass, 503 if any fail. Traefik uses this for load balancing decisions.
- GETReadiness probe — returns 200 only when the application has completed startup. Deploy scripts use this to verify an instance is ready before routing traffic.
Add a tag to a contact.
curl --request POST \
--url https://api.backside.app/api/v1/contacts/{id}/tags \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"tag_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'Contacts
Add a tag to a contact.
POST
/
api
/
v1
/
contacts
/
{id}
/
tags
Add a tag to a contact.
curl --request POST \
--url https://api.backside.app/api/v1/contacts/{id}/tags \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"tag_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
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