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API, MCP and SKILL — one place to integrate

Every endpoint ships an intent, parameters and a copy-paste request example. Billed per call with your own sk- key — if your balance is short, nothing is charged and nothing runs.

Quick start

Three steps to your first successful call.

  1. 1

    Sign up / log in

    Create a free APEX account and open the console.

    Sign up
  2. 2

    Create an API key

    Create your sk- key on the console's API keys page — it works immediately.

    Create a key
  3. 3

    Make your first call

    Copy the example and swap in your sk- key — it uses image OCR, which is free.

    curl -X POST https://api.apex-nodes.com/api/v1/capabilities/ocr \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{"image_urls":["https://example.com/poster.jpg"]}'

Base URL

https://api.apex-nodes.com/api/v1

Auth

Add the header Authorization: Bearer sk-<your key>Create a key →

Rate limits & quotas

Per-key request rate plus per-account daily / monthly call quotas; exceeding them returns 429 with Retry-After.

Free allowance：¥2/day — paid capabilities draw on the free allowance first; the wallet is only charged once it runs out.

Idempotency

Optionally send an Idempotency-Key header — a retry is never charged twice.

Common error codes

  • 401 · Missing or invalid key
  • 402 · Wallet balance too low (vouchers first, then cash) — top up and retry
  • 429 · Rate limited — retry later per Retry-After
  • 409 · Duplicate Idempotency-Key — not charged again

Social data

Fetch and search public social posts, grouped by platform. All 11 whitelisted platforms are live (content lookup + keyword search).

¥36/1k calls

Douyin video data

Pull a Douyin video's public play, like, comment, share and author data from a share link.

Live
Direct API (sk- key)
Inside IM / Desktop assistants
POST /api/v1/capabilities/social

Parameters

  • platform Required — Platform — set to douyin
  • action Required — Action — set to content
  • params.url Required — Douyin share link (a v.douyin.com short link or a web URL)
Request example›
curl -X POST https://api.apex-nodes.com/api/v1/capabilities/social \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{"platform":"douyin","action":"content","params":{"url":"https://v.douyin.com/xxxxxx/"}}'
¥36/1k calls

Douyin post search

Search public Douyin posts by keyword for topic research, benchmarking and trend discovery.

Live
Direct API (sk- key)
Inside IM / Desktop assistants
POST /api/v1/capabilities/social

Parameters

  • platform Required — Platform — set to douyin
  • action Required — Action — set to search
  • params.keyword Required — Search keyword
Request example›
curl -X POST https://api.apex-nodes.com/api/v1/capabilities/social \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{"platform":"douyin","action":"search","params":{"keyword":"猫咪美食"}}'

Media processing

Video transcription, image OCR and more — future media-processing capabilities all hang here.

¥0.06/min

Video transcription

Turn one social video link into a verbatim transcript, billed by audio length.

Live
Direct API (sk- key)
Inside IM / Desktop assistants
POST /api/v1/capabilities/transcribe

Parameters

  • url Required — Social video share link
Request example›
curl -X POST https://api.apex-nodes.com/api/v1/capabilities/transcribe \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{"url":"https://v.douyin.com/xxxxxx/"}'
Free

Image OCR

Read the text in an image or social post, billed per call.

Live
Direct API (sk- key)
Inside IM / Desktop assistants
POST /api/v1/capabilities/ocr

Parameters

  • image_urls Required — Array of image URLs
Request example›
curl -X POST https://api.apex-nodes.com/api/v1/capabilities/ocr \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{"image_urls":["https://example.com/poster.jpg"]}'

LLM / model relay

AI model relay: Agnes text-to-image and text-to-video are live; OpenAI-compatible chat completions serve assistants on the platform, and an sk--billed version is coming soon.

Free

Text to image

Describe it in a sentence and generate an image (made by Agnes).

Live
Direct API (sk- key)
Inside IM / Desktop assistants
POST /api/v1/capabilities/agnes-image

Parameters

  • prompt Required — Image prompt
  • aspect_ratio Optional — Aspect ratio, e.g. 16:9
Request example›
curl -X POST https://api.apex-nodes.com/api/v1/capabilities/agnes-image \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{"prompt":"霓虹城市夜景里奔跑的柴犬,电影质感","aspect_ratio":"16:9"}'
Free

Text to video

Describe it in a sentence and generate a short video asynchronously (made by Agnes).

Live
Direct API (sk- key)
Inside IM / Desktop assistants
POST /api/v1/capabilities/agnes-video

Parameters

  • prompt Required — Video prompt
  • seconds Optional — Video length in seconds
Request example›
curl -X POST https://api.apex-nodes.com/api/v1/capabilities/agnes-video \
  -H "Authorization: Bearer sk-..." \
  -H "Content-Type: application/json" \
  -d '{"prompt":"海浪拍打礁石的慢动作特写","seconds":5}'
Agent-only (not sk- billed)

Chat completions (OpenAI-compatible)

Call the platform-hosted LLMs in the OpenAI-compatible chat-completions format — the standard LLM channel for the platform's IM / Desktop assistants, authenticated with an Agent API Key.

Live
Inside IM / Desktop assistants
POST https://apex-nodes.com/relay/v1/chat/completions

Parameters

  • model Required — Model id (list the available models via GET /relay/v1/models, same Agent API Key auth)
  • messages Required — OpenAI-format message array (role + content)
  • stream Optional — Stream the response; defaults to false
Request example›
curl -X POST https://apex-nodes.com/relay/v1/chat/completions \
  -H "Authorization: Bearer <agent-api-key>" \
  -H "Content-Type: application/json" \
  -d '{"model":"deepseek-v4-flash","messages":[{"role":"user","content":"用一句话介绍你自己"}]}'
Coming soon

Text-LLM relay (sk- billed)

A text-LLM relay you call directly with an sk- key, billed per call from your wallet — coming soon. Platform assistants can already use platform models through the OpenAI-compatible endpoint.

Websearch relay

A relay endpoint for live web search — already live in production, serving agents on the platform.

Agent-only (not sk- billed)

Web search

Search the live web for a keyword or question and return page titles, snippets and links. Available to agents on the platform via their Agent API Key (wired in by default for hosted/desktop agents) — not yet opened as an sk- key marketplace SKU.

Live
Inside IM / Desktop assistants
GET /api/v1/search/searxng/search

Parameters

  • q Required — Search keyword or question
Request example›
curl -X GET "https://api.apex-nodes.com/api/v1/search/searxng/search?q=%E6%9C%80%E6%96%B0%E6%AC%BE%E6%8A%98%E5%8F%A0%E5%B1%8F%E6%89%8B%E6%9C%BA%E8%AF%84%E6%B5%8B" \
  -H "Authorization: Bearer <agent-api-key>"

MCP / SKILL integration forms

Beyond direct API calls, these capabilities also plug into your own AI assistant as integrations: SKILL is live, SDK and MCP are coming soon — see the capability shelf.

View the capability shelf
Coming soon

SDK

Call APEX capabilities as functions from your own code.

Coming soon

MCP

Connect APEX capabilities to any MCP-aware assistant over the MCP protocol.

Available

SKILL

Give your AI assistant a skill it can invoke in one sentence — nothing to wire up.

  • Douyin data fetch
  • Agnes image & video

Endpoints, prices and the free allowance are read live from the public catalog GET /capabilities/catalog. Billing, rate limiting and auth reuse the platform's shared wallet and sk- key system; a short balance returns 402.