plaingateway

plaingateway Chat Completions API

The Chat Completions API from plaingateway — 1 operation(s) for chat completions.

GitHub OpenAPI

Operations 1

POST /chat/completions Create a chat completion #

Specifications

⚙
OpenAPI
https://artifacts.apis.io/plaingateway/openapi/plaingateway-chat-completions-api-openapi.yml

Schemas & Data

📊
JSONSchema
https://artifacts.apis.io/plaingateway/json-schema/plaingateway-chat-completion-schema.json
📊
JSONSchema
https://artifacts.apis.io/plaingateway/json-schema/plaingateway-chat-request-schema.json

Other Resources

🔗
APIsJSON
https://artifacts.apis.io/plaingateway/apis.yml

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/plaingateway:plaingateway-chat-completions-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

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

plaingateway-chat-completions-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: plaingateway Chat API
  version: 1.0.0
  description: OpenRouter-compatible LLM gateway. Every path below is also served under /v1 on the same host. A key (sk-pg-v1-...) comes from the dashboard; no API creates keys.
servers:
- url: https://api.plaingateway.com/api/v1
security:
- bearer: []
- apiKey: []
tags:
- name: Chat Completions
paths:
  /chat/completions:
    post:
      operationId: chat_completions
      summary: Create a chat completion
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ChatRequest'
      responses:
        '200':
          description: The completion, or a stream when stream is true.
          headers:
            X-PG-Host:
              description: The serving host, or none.
              schema:
                type: string
            X-PG-Cost-USD:
              description: 'The charge in USD, on a non-streamed response. A stream has no cost header: the cost is usage.cost in its final usage chunk.'
              schema:
                type: string
            X-Generation-Id:
              description: The generation id for GET /generation.
              schema:
                type: string
            X-PG-Request-Id:
              description: Same value as X-Generation-Id.
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ChatCompletion'
            text/event-stream:
              schema:
                type: string
                description: 'Server-sent events. `: PLAINGATEWAY PROCESSING` comment lines keep the connection open while the host has not answered.'
        '400':
          $ref: '#/components/responses/E400'
        '401':
          $ref: '#/components/responses/E401'
        '402':
          $ref: '#/components/responses/E402'
        '404':
          $ref: '#/components/responses/E404'
        '408':
          $ref: '#/components/responses/E408'
        '413':
          $ref: '#/components/responses/E413'
        '429':
          $ref: '#/components/responses/E429'
        '502':
          $ref: '#/components/responses/E502'
        '503':
          $ref: '#/components/responses/E503'
      tags:
      - Chat Completions
components:
  responses:
    E429:
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
    E402:
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
    E404:
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
    E503:
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
    E413:
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
    E401:
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
    E408:
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
    E400:
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
    E502:
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
  schemas:
    ChatRequest:
      type: object
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true
    ChatCompletion:
      type: object
      description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
      x-ae-placeholder: true