> ## Documentation Index
> Fetch the complete documentation index at: https://docs.reply.io/llms.txt
> Use this file to discover all available pages before exploring further.
# List inbox categories
> _Requires the `inbox:read` scope (or a broader one that includes it)._
Use this endpoint when you need the inbox categories you can file conversations under, including the reserved ones Reply provides out of the box. Each entry carries its name, color, whether it is reserved, and how many unread threads it currently holds. Pass ownerUserId to see the categories of a specific teammate instead of your own.
## OpenAPI
````yaml /api-reference/bundled.yaml get /v3/inbox/threads/categories
openapi: 3.1.0
info:
version: 3.0.0
title: Reply API
description: API for managing email sequences, contacts, and automation workflows
servers:
- url: https://api.reply.io
security:
- bearerAuth: []
tags:
- name: User Account
description: Account information and authentication verification
- name: Accounts
description: Manage accounts (companies/organizations)
- name: AI Prompts
description: >-
Manage the AI prompts used to configure sequence steps, and preview the
output a prompt produces
- name: AI SDR Insights
description: Read AI SDR insights for sequence contacts
- name: AI SDR Intent Signals
description: >-
Read Reply industry IDs and technology slugs used in AI SDR intent-signal
configuration (typeahead)
- name: AI SDR Sequences
description: >-
Manage AI SDR sequences and their AI SDR-specific settings — create, read
settings, partial update, autopilot enable/disable/force-start, approval
mode, generated step types, and playbook/knowledge-base connections
- name: AI SDR Web Search
description: Find contacts via AI-driven web search and review past searches
- name: Attachments
description: >-
Upload file attachments used across email templates, sequence steps, and
direct emails
- name: Account Lists
description: Manage account lists and account membership
- name: Background Jobs
description: >-
Track and cancel asynchronous background operations (e.g., email
validation)
- name: Custom Fields
description: Manage custom contact fields
- name: Direct Outreach
description: >-
Send one-off outreach directly to a contact outside of any sequence —
direct emails and LinkedIn connection requests, messages, InMails, and
voice messages
- name: Contact Blacklist Rules
description: Manage blacklist rules for domains, emails, and email exceptions
- name: Contact Enrichment
description: >-
Enrich contacts with emails, phone numbers, LinkedIn data, and AI-filled
custom fields
- name: Contact Lists
description: Manage contact lists and contact membership
- name: Contacts
description: Manage individual contacts
- name: Email Accounts
description: Manage email accounts used for sending and receiving
- name: Email Templates
description: Manage email templates and template folders
- name: Email Validations
description: Estimate and schedule asynchronous email validation jobs
- name: Holiday Calendars
description: Manage holiday calendars for scheduling
- name: Inbox
description: >-
Manage inbox threads and per-team thread categories — list/filter, read
state, replies, category assignment, and meeting-intent flagging
- name: LinkedIn Accounts
description: Manage LinkedIn accounts for outreach
- name: Live Data
description: >-
Find new contacts via Live Data searches and read typeahead values for the
Live Data / Autopilot filter sidebar
- name: AI SDR Knowledge Bases
description: >-
Manage AI SDR knowledge bases — collections of documents, links, reply
handlers, and reengagement cards that inform the agent's responses
- name: AI SDR Offers
description: >-
Manage AI SDR offers — bundles of company-context inputs (ICP, pain
points, value propositions, etc.) used to personalize outreach
- name: AI SDR Pending Approvals
description: >-
Review, send, regenerate, and provide feedback on AI-generated messages
awaiting human approval
- name: AI SDR Playbooks
description: >-
Manage AI SDR playbooks — tone, voice, and style guides applied during
personalized message generation
- name: Reports
description: >-
Generate and access performance reports across email, calls, tasks,
LinkedIn, and team performance
- name: Schedules
description: Manage email send schedules and timing
- name: Settings
description: Manage team and user settings
- name: Sequence Contacts
description: Manage contacts within sequences
- name: Sequence Email Accounts
description: Manage email accounts linked to sequences
- name: Sequence Folders
description: Organize sequences into folders
- name: Sequence LinkedIn Accounts
description: Manage LinkedIn accounts linked to sequences
- name: AI SDR Sequence Preview
description: >-
Read and regenerate per-contact previews of the messages a sequence will
send, and provide feedback on preview messages
- name: Sequence Steps
description: Manage individual steps in sequences
- name: Sequence Templates
description: Manage sequence templates
- name: Sequences
description: Manage email automation sequences
- name: AI SDR Strategist
description: Trigger AI Strategist runs
- name: Tasks
description: Manage tasks and to-do items
- name: Webhooks
description: Manage webhook subscriptions and inspect delivery history
paths:
/v3/inbox/threads/categories:
get:
tags:
- Inbox
summary: List inbox categories
description: >-
_Requires the `inbox:read` scope (or a broader one that includes
it)._
Use this endpoint when you need the inbox categories you can file
conversations under, including the reserved ones Reply provides out of
the box. Each entry carries its name, color, whether it is reserved, and
how many unread threads it currently holds. Pass ownerUserId to see the
categories of a specific teammate instead of your own.
operationId: ListInboxCategories
parameters:
- name: ownerUserId
in: query
required: false
schema:
type: integer
minimum: 1
description: >-
Restrict to categories visible to the given user. The target must be
a member of the caller's team; otherwise the request fails with 400
`inboxCategory.invalidInput`.
responses:
'200':
description: Inbox categories
content:
application/json:
schema:
type: array
items:
type: object
title: Inbox Category
description: >-
Inbox thread category. Reserved categories are owned by the
system and cannot be modified or deleted.
required:
- id
- name
- color
- isReserved
- unreadThreadsCount
properties:
id:
type: integer
name:
type: string
maxLength: 64
color:
type: string
enum:
- gray
- green
- blue
- red
- yellow
- purple
- orange
- lightBlue
- olive
isReserved:
type: boolean
description: >-
True for system-reserved categories (e.g., the default
category). Reserved categories cannot be renamed,
recoloured, or deleted.
unreadThreadsCount:
type: integer
description: >-
Number of unread threads currently assigned to this
category.
example:
- id: 1
name: Meeting
color: green
isReserved: true
unreadThreadsCount: 3
- id: 7
name: Hot Leads
color: red
isReserved: false
unreadThreadsCount: 12
- id: 8
name: Needs Follow-up
color: yellow
isReserved: false
unreadThreadsCount: 5
'400':
description: |-
Query parameter validation failure, or a business-rule rejection
(the supplied `ownerUserId` is not a member of the caller's team).
content:
application/problem+json:
schema:
oneOf:
- allOf:
- allOf:
- type: object
title: Problem Details
description: >-
Bare RFC 9457 problem-details envelope. Returned
by middleware-level errors
that don't carry domain context: 401 Unauthorized
(auth middleware),
429 Too Many Requests (rate-limit middleware), and
route-level 404 / 405 /
415 (framework middleware).
Business and validation responses extend this
envelope and add additional
fields — see `business-problem.model.yaml` (adds
`code` slug) and
`validation-problem.model.yaml` (adds `errors[]`
array).
properties:
title:
type: string
description: Short, human-readable summary of the problem.
status:
type: integer
description: HTTP status code.
minimum: 100
maximum: 599
detail:
type: string
description: >-
Human-readable explanation specific to this
occurrence.
- type: object
properties:
errors:
type: array
description: >-
List of field-level validation errors. Always
non-empty when this
envelope is returned. Each entry pins a single
offending field
via JSON Pointer plus a sanitized detail
string.
items:
type: object
title: Validation Error
description: A single field-level validation error.
properties:
pointer:
type: string
description: >-
JSON Pointer (RFC 6901) to the offending
field — e.g.
`/steps/0/subject`.
* An empty string (`""`) means the error
applies to the whole
request body (e.g. body is missing or unparseable).
* For route or query parameter failures
the pointer is the parameter
name (e.g. `id`, `top`).
example: /steps/0/subject
detail:
type: string
description: >-
Sanitized, human-readable explanation of
this field's error. One of a
small set of templates — `"Field is
required."`, `"Value has an
invalid type."`, `"Value has an invalid
format."`, `"Request body is
not valid JSON."`, `"The request body is
required and cannot be
empty."` — or a FluentValidator message
on body endpoints.
example: Field is required.
title: Validation Problem
description: >-
Input-validation error response at 400. Returned when
the request body
fails binding, FluentValidator rules, or when
route/query parameter
attribute validation (`[Range]`, `[Required]`) fails.
Route, query, and
body errors are combined into a single `errors[]`
array — clients should
not assume one error per request.
- example:
title: Validation failed
status: 400
detail: The request body contains validation errors.
errors:
- pointer: /name
detail: Field is required.
- allOf:
- allOf:
- type: object
title: Problem Details
description: >-
Bare RFC 9457 problem-details envelope. Returned
by middleware-level errors
that don't carry domain context: 401 Unauthorized
(auth middleware),
429 Too Many Requests (rate-limit middleware), and
route-level 404 / 405 /
415 (framework middleware).
Business and validation responses extend this
envelope and add additional
fields — see `business-problem.model.yaml` (adds
`code` slug) and
`validation-problem.model.yaml` (adds `errors[]`
array).
properties:
title:
type: string
description: Short, human-readable summary of the problem.
status:
type: integer
description: HTTP status code.
minimum: 100
maximum: 599
detail:
type: string
description: >-
Human-readable explanation specific to this
occurrence.
- type: object
properties:
code:
type: string
description: >-
Stable, machine-readable error slug in the
form
`"."`.
* `resource` is the camelCased domain — e.g.
`sequence`,
`contact`, `inboxThread`, `blacklistDomainRule`.
* `variant` is the camelCased specific failure
mode — e.g.
`notFound`, `forbidden`, `duplicateName`, `globalRuleReadOnly`.
Use `code` for programmatic error handling;
use `detail` for
user-facing messages. Slugs are stable across
server-side enum
reorderings and never change meaning under a
given resource.
pattern: ^[a-z][a-zA-Z0-9]*(\.[a-z][a-zA-Z0-9]*)+$
example: sequence.notFound
title: Business Problem
description: >-
Domain error response carrying a stable, namespaced
error slug.
Emitted for most 4xx responses (business 400, 403,
404, 409, …) and
for 503 when a downstream dependency is unavailable.
- example:
title: Bad Request
status: 400
detail: Pagination parameters are invalid.
code: sequence.invalidPagination
examples:
validation_failed:
summary: Query parameter validation
value:
title: Validation failed
status: 400
detail: The request contains validation errors.
errors:
- pointer: /ownerUserId
detail: '''ownerUserId'' must be a positive integer.'
owner_not_team_member:
summary: Owner not in caller's team
value:
title: Bad Request
status: 400
detail: The specified owner is not a member of your team.
code: inboxCategory.invalidInput
'401':
description: >-
Unauthorized. The response body is empty; check the
`WWW-Authenticate` header for the expected scheme.
content:
application/problem+json:
schema:
allOf:
- type: object
title: Problem Details
description: >-
Bare RFC 9457 problem-details envelope. Returned by
middleware-level errors
that don't carry domain context: 401 Unauthorized (auth
middleware),
429 Too Many Requests (rate-limit middleware), and
route-level 404 / 405 /
415 (framework middleware).
Business and validation responses extend this envelope and
add additional
fields — see `business-problem.model.yaml` (adds `code`
slug) and
`validation-problem.model.yaml` (adds `errors[]` array).
properties:
title:
type: string
description: Short, human-readable summary of the problem.
status:
type: integer
description: HTTP status code.
minimum: 100
maximum: 599
detail:
type: string
description: >-
Human-readable explanation specific to this
occurrence.
- example:
title: Unauthorized
status: 401
detail: Authentication credentials are missing or invalid.
'403':
description: Inbox feature is not available for this user or team.
content:
application/problem+json:
schema:
allOf:
- allOf:
- type: object
title: Problem Details
description: >-
Bare RFC 9457 problem-details envelope. Returned by
middleware-level errors
that don't carry domain context: 401 Unauthorized
(auth middleware),
429 Too Many Requests (rate-limit middleware), and
route-level 404 / 405 /
415 (framework middleware).
Business and validation responses extend this envelope
and add additional
fields — see `business-problem.model.yaml` (adds
`code` slug) and
`validation-problem.model.yaml` (adds `errors[]`
array).
properties:
title:
type: string
description: Short, human-readable summary of the problem.
status:
type: integer
description: HTTP status code.
minimum: 100
maximum: 599
detail:
type: string
description: >-
Human-readable explanation specific to this
occurrence.
- type: object
properties:
code:
type: string
description: >-
Stable, machine-readable error slug in the form
`"."`.
* `resource` is the camelCased domain — e.g.
`sequence`,
`contact`, `inboxThread`, `blacklistDomainRule`.
* `variant` is the camelCased specific failure
mode — e.g.
`notFound`, `forbidden`, `duplicateName`, `globalRuleReadOnly`.
Use `code` for programmatic error handling; use
`detail` for
user-facing messages. Slugs are stable across
server-side enum
reorderings and never change meaning under a given
resource.
pattern: ^[a-z][a-zA-Z0-9]*(\.[a-z][a-zA-Z0-9]*)+$
example: sequence.notFound
title: Business Problem
description: >-
Domain error response carrying a stable, namespaced error
slug.
Emitted for most 4xx responses (business 400, 403, 404,
409, …) and
for 503 when a downstream dependency is unavailable.
- example:
title: Forbidden
status: 403
detail: You do not have permission to access this resource.
code: sequence.forbidden
example:
title: Forbidden
status: 403
detail: Inbox feature is not available for this user.
code: inboxCategory.forbidden
'429':
description: Too Many Requests
headers:
Retry-After:
description: Seconds to wait before retrying
schema:
type: integer
minimum: 1
content:
application/problem+json:
schema:
allOf:
- type: object
title: Problem Details
description: >-
Bare RFC 9457 problem-details envelope. Returned by
middleware-level errors
that don't carry domain context: 401 Unauthorized (auth
middleware),
429 Too Many Requests (rate-limit middleware), and
route-level 404 / 405 /
415 (framework middleware).
Business and validation responses extend this envelope and
add additional
fields — see `business-problem.model.yaml` (adds `code`
slug) and
`validation-problem.model.yaml` (adds `errors[]` array).
properties:
title:
type: string
description: Short, human-readable summary of the problem.
status:
type: integer
description: HTTP status code.
minimum: 100
maximum: 599
detail:
type: string
description: >-
Human-readable explanation specific to this
occurrence.
example:
title: Too Many Requests
status: 429
detail: Rate limit exceeded. Retry after 60 seconds.
components:
securitySchemes:
bearerAuth:
type: http
scheme: bearer
description: >-
Authenticate every request with a Bearer token. Pass your Reply API key
in the
`Authorization` header:
```
Authorization: Bearer
```
Get your API key from the Reply dashboard: **Settings → API Key**.
````