Delphi

Delphi Tags API

Create tags and organize your audience.

Documentation GitHub OpenAPI

Operations 4

POST /v3/tags Create a tag #

POST /v3/users/{user_id}/tags/{tag_name} Tag a user #

DELETE /v3/users/{user_id}/tags/{tag_name} Untag a user #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/delphi:delphi-tags-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.2.0
info:
  title: Delphi Tags API
  version: v3
  x-provenance:
    generated: '2026-07-18'
    method: generated
    source: https://docs.delphi.ai/advanced/actions/api-immortal-only.md and the per-resource reference pages (audience, conversations, clone, questions, tags, usage, voice, search). Hand-built from the published REST reference; Delphi does not publish a machine-readable OpenAPI.
  description: The Delphi API lets you integrate your Digital Mind (an AI clone trained on your content) directly into your own app, platform, or workflow. Create conversations, stream text and voice responses, manage your audience and its contextual memory, organize contacts with tags, search your clone's knowledge base for RAG, and track per-user usage. API access is available on the Immortal plan. All endpoints authenticate with an API key passed in the x-api-key header and are scoped to a single clone.
  contact:
    name: Delphi Support
    email: support@delphi.ai
    url: https://docs.delphi.ai/advanced/actions/api-immortal-only
  termsOfService: https://delphi.ai/terms
servers:
- url: https://api.delphi.ai
  description: Production
security:
- ApiKeyAuth: []
tags:
- name: Tags
  description: Create tags and organize your audience.
paths:
  /v3/tags:
    post:
      operationId: createTag
      tags:
      - Tags
      summary: Create a tag
      description: Create a new tag for organizing your audience. Returns 409 if a tag with the same name already exists.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - name
              properties:
                name:
                  type: string
                  description: Tag name (must be unique per clone)
                color:
                  type: string
                  default: default
            example:
              name: VIP
              color: blue
      responses:
        '200':
          description: Tag created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Tag'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '409':
          $ref: '#/components/responses/Conflict'
        '429':
          $ref: '#/components/responses/RateLimited'
    get:
      operationId: listTags
      tags:
      - Tags
      summary: List all tags
      description: Retrieve all tags for your clone, sorted newest first.
      responses:
        '200':
          description: List of tags
          content:
            application/json:
              schema:
                type: object
                properties:
                  tags:
                    type: array
                    items:
                      $ref: '#/components/schemas/Tag'
                  total_count:
                    type: integer
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
  /v3/users/{user_id}/tags/{tag_name}:
    post:
      operationId: tagUser
      tags:
      - Tags
      summary: Tag a user
      description: Apply a tag to a user in your audience. Idempotent — tagging a user who already has the tag succeeds without error.
      parameters:
      - name: user_id
        in: path
        required: true
        schema:
          type: string
      - name: tag_name
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Tag applied
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TagMutation'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '429':
          $ref: '#/components/responses/RateLimited'
    delete:
      operationId: untagUser
      tags:
      - Tags
      summary: Untag a user
      description: Remove a tag from a user. Idempotent — untagging a user who doesn't have the tag succeeds without error.
      parameters:
      - name: user_id
        in: path
        required: true
        schema:
          type: string
      - name: tag_name
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Tag removed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TagMutation'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error message
    Tag:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        color:
          type: string
        created_at:
          type: string
          format: date-time
        updated_at:
          type: string
          format: date-time
    TagMutation:
      type: object
      properties:
        success:
          type: boolean
        tag_id:
          type: string
        tag_name:
          type: string
        user_id:
          type: string
        message:
          type: string
  responses:
    Conflict:
      description: Resource already exists (e.g. duplicate tag name)
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    RateLimited:
      description: Too many requests — 120 requests per 60 seconds per API key exceeded
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: API key scoped to a single clone. Available on the Immortal plan; request one from support@delphi.ai.