# AgentDiet MCP Security Node

> AgentDiet MCP Security Node is a paid API for AI agents from rag-diet.agentdiet.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).

Returns MCP security metadata and compression ROI proof for context window optimization via a paid micro-API

## Facts

- Endpoint: GET https://rag-diet.agentdiet.dev/v1/mcp-security?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentdiet-mcp-security-node-0a92e411
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EWaUPfnEcrvN-r8LXm5b6

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentdiet-mcp-security-node-0a92e411
```

Example prompt: Pull the MCP security node info from AgentDiet's RAG-Diet service so I can see the compression ROI and security metadata for my agent pipeline.

## When to prefer this

Choose this endpoint when you need to inspect or verify the MCP security configuration and compression ROI of the AgentDiet context distillation node, especially within A2A or B2A pipelines using x402 micropayments on Base. Best suited for agents managing AI infrastructure that rely on token budget optimization.

## Known failure modes

- Payment not fulfilled — 402 response if USDC payment on Base not provided
- Invalid input schema — missing required 'type' or 'method' fields returns validation error
- Service unavailable — node may return non-200 if infrastructure is down
- Unsupported method — only GET and POST are accepted per the method enum

## How this service works

Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://rag-diet.agentdiet.dev settling in USDC on Base.

## Output

Returns a JSON object with a status field ('ok'), a data object containing MCP security metadata, and an roi_proof object showing the compression_ratio_pct (e.g. 91.4%) achieved by the context distillation node.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "text": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentdiet-mcp-security-node-0a92e411/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rag-diet.agentdiet.dev](https://www.zero.xyz/host/rag-diet.agentdiet.dev/llms.txt)