Let Your Agent Call Any AI Tool in One Click

Open-sourcing the Souyi AIMALL MCP Server · zero dependencies · pay-as-you-go · $5 free credit on signup

The Problem: Agents Want AI Tools, but Integration Cost Kills Them

Every agent builder hits the same wall today:

• Want to add "web search" or "image generation"? You sign up at each vendor, read docs, wire up SDKs, and manage separate keys.
• Every vendor bills differently; balances are scattered, so you never know what a single task cost.
• Switching models means code changes; switching vendors means rewriting the adapter.

80% of agent projects die before their first successful external AI call.

The Fix: Make AI Tools a Plug-and-Play Standard Part

Souyi AIMALL is an AI API marketplace built for agents. Models and tools are unified behind one endpoint — /api/v1/ai/request — authenticated with one X-API-Key, metered per call, returning a unified order and balance.

To let agents discover and connect themselves, we shipped three machine-readable artifacts:

1. llms.txt — an LLM/crawler overview plus a 3-step self-serve guide;
2. openapi.json — the full OpenAPI 3.0.3 contract;
3. .well-known/agent.json — an A2A-style Agent Card.

On top of that, AIMALL is itself a cloud MCP server compliant with MCP 2.0 (2026-07-28): it wraps the marketplace into 7 standard MCP tools + 5 built-in prompts + 5 machine-readable resources any MCP client can load in one click — no download, no skill package to install.

MCP 2.0 Remote Endpoint: No Download, Connect Instantly

AIMALL is a cloud MCP server compliant with MCP 2.0 (2026-07-28). Any MCP-capable client just needs one URL + your API key — no download, no skill package to install — to connect.

Built-in Capabilities: 7 Tools + 5 Prompts + 5 Resources

Type	Name	Purpose
Tool	list_assets	List every AI asset (ID, type, unit price)
Tool	ai_estimate	Estimate a call's cost (no charge) — use as a budget gate
Tool	ai_request	Run the call; returns result + order ID + remaining balance
Tool	bootstrap_account	Self-serve signup + agent creation; fetches the key end-to-end
Tool	get_onboarding	Returns onboarding steps and doc links
Tool	list_categories / search_free_apis	Find the right asset among 900+ free APIs (no quota cost)
Prompt	estimate_before_call / find_free_api / use_download_accelerator / onboard_new_agent / medical_data_lookup	Built-in workflow hints, ready out of the box
Resource	aimall://catalog/* / aimall://docs/*	Machine-readable catalogs: free-API llms.txt, mirror snapshot, docs/llms, openapi

Typical workflow: list_assets → ai_estimate → approve → ai_request; for the 900+ free APIs, first run list_categories / search_free_apis.

Connect to Claude Desktop in 30 Seconds (remote, no install)

{
  "mcpServers": {
    "aimall": {
      "url": "https://souyi.net.cn/api/v1/mcp",
      "headers": { "X-API-Key": "ak_your_key" }
    }
  }
}

Restart Claude and it can "write code with MiniMax-M3", "generate an image", or "run a web search" — billed from the $5 free credit, no human approval needed. Cursor, LangChain, Dify, Coze and any other MCP client connect the same way with the same URL + API key.

Why This Matters for the Agent Ecosystem

• Discovery: llms.txt / openapi.json / agent.json let frameworks understand automatically what this platform does and how to call it.
• Unification: one endpoint, one key, one bill — goodbye multi-vendor sprawl.
• Zero friction: $5 on signup, self-serve top-up (planned) to drop human approval — truly unattended.

Get Started

• Platform: https://souyi.net.cn
• Overview: https://souyi.net.cn/llms.txt
• OpenAPI: https://souyi.net.cn/openapi.json
• Agent Card: https://souyi.net.cn/.well-known/agent.json
• MCP landing page: /mcp.html