# 400860 MCP Tool Call

> 400860 MCP Tool Call is a paid API for AI agents from api.400860.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Executes a paid MCP (Model Context Protocol) tool call on the 400860 Radar AI-operated x402 Web3 opportunity network for $0.01 USDC per call

## Facts

- Endpoint: POST https://api.400860.xyz/mcp/call
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/400860-mcp-tool-call-0aee33e3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LN1CVR_EdLPD-g5F-lajC

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 400860-mcp-tool-call-0aee33e3 -d '<json body>'
```

Example prompt: Using the 400860 Radar x402 network, make a paid MCP tool call with my funded Base USDC wallet — send a POST request with a JSON body to the mcp/call endpoint and show me the tool result and recommended next steps.

## When to prefer this

Choose this endpoint when you need to invoke a tool on the 400860 Radar AI-operated x402 network and are prepared to pay $0.01 USDC per call using a funded Base USDC wallet with x402 protocol support. Prefer this over free alternatives when you specifically need access to the 400860 Radar Web3 opportunity intelligence or MCP-compatible tool results gated behind micropayments.

## Known failure modes

- 402 Payment Required if wallet is not funded or x402 payment header is missing
- Invalid input schema if required fields (type, method, bodyType, body) are absent
- Payment not recognized if transaction is not confirmed on Base chain
- Truncated or malformed response if body type does not match actual payload
- Endpoint unavailable if 400860 Radar network is down

## How this service works

400860 Radar is an AI-operated x402 Web3 opportunity network for humans and agents.

## Output

Returns a JSON object containing an MCP content array with the tool result (JSON or text), a product ID ('mcp_tool_call'), recommended follow-up calls, and buyer preparation metadata including funding actions, readiness checks, and revenue summary URLs.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "additionalProperties": true
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "title": {
       "type": "string"
      },
      "nextStep": {
       "type": "string"
      },
      "productId": {
       "type": "string"
      },
      "expectedOutput": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "buyerPreparation": {
       "type": "object",
       "properties": {
        "payNow": {
         "type": "string"
        },
        "objective": {
         "type": "string"
        },
        "notRevenue": {
         "type": "array",
         "items": {
          "type": "string"
         }
        },
        "fundingAction": {
         "type": "string"
        },
        "readinessLoop": {
         "type": "string"
        },
        "revenueSummary": {
         "type": "string"
        },
        "checkoutSession": {
         "type": "string"
        },
        "firstSaleDryRun": {
         "type": "string"
        },
        "paymentRecovery": {
         "type": "string"
        },
        "activationBundle": {
         "type": "string"
        },
        "successCondition": {
         "type": "string"
        },
        "realPaymentCommand": {
         "type": "string"
        }
       },
       "additionalProperties": true
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "title": "MCP-lite paid tool call",
  "nextStep": "/mcp/tools",
  "productId": "mcp_tool_call",
  "expectedOutput": [
   "MCP content array",
   "json or text tool result",
   "recommended follow-up calls"
  ],
  "buyerPreparation": {
   "payNow": "https://api.400860.xyz/v1/buyer/pay-now?address=0xBUYER_ADDRESS",
   "objective": "Clear funding/readiness before attempting a real x402 payment.",
   "notRevenue": [
    "402 probes",
    "funding-action reads",
    "checkout-session reads",
    "readiness-loop reads",
    "pay-now reads",
    "downloads",
    "manifest views"
   ],
   "focusedDryRun": "curl -i -X POST https://api.400860.xyz/mcp/call",
   "fundingAction": "https://api.400860.xyz/v1/buyer/funding-action",
   "machinePayNow": {
    "price": "$0.01",
    "method": "POST",
    "resource": "https://api.400860.xyz/mcp/call",
    "payNowUrl": "https://api.400860.xyz/v1/buyer/pay-now?channel=bazaar-mcp_tool_call",
    "productId": "mcp_tool_call",
    "nextAction": "Run payCommand once from a local buyer runtime with a funded Base USDC wallet, then verify revenueSummary instead of treating discovery, 402 probes, or downloads as revenue.",
    "notRevenue": [
     "manifest reads",
     "payment quote reads",
     "pay-now reads",
     "402 probes",
     "downloads",
     "self-test payments"
    ],
    "payCommand": "RADAR_TARGET=https://api.400860.xyz/mcp/call RADAR_METHOD=POST X402_PAY=true X402_PRIVATE_KEY=0xYOUR_FUNDED_X402_PRIVATE_KEY npx --yes --package https://x402.400860.xyz/downloads/400860-x402-client/400860-x402-client-0.1.4.tgz 400860-x402 pay",
    "recoveryUrl": "https://api.400860.xyz/v1/buyer/payment-recovery?address=0xBUYER_ADDRESS&channel=bazaar-mcp_tool_call",
    "buyerGuideUrl": "https://api.400860.xyz/v1/open-source-agent/buyer-guide",
    "verificationUrl": "https://api.400860.xyz/v1/revenue/summary",
    "successCondition": "eventCount > 0 && hasExternalRevenue === true after a paid protected handler returns for mcp_tool_call."
   },
   "readinessLoop": "https://api.400860.xyz/v1/buyer/readiness-loop?address=0xBUYER_ADDRESS",
   "revenueSummary": "https://api.400860.xyz/v1/revenue/summary",
   "checkoutSession": "https://api.400860.xyz/v1/buyer/checkout-session?address=0xBUYER_ADDRESS",
   "firstSaleDryRun": "curl -i -X POST https://api.400860.xyz/mcp/call",
   "paymentRecovery": "https://api.400860.xyz/v1/buyer/payment-recovery?address=0xBUYER_ADDRESS",
   "activationBundle": "https://api.4008
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/400860-mcp-tool-call-0aee33e3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.400860.xyz](https://www.zero.xyz/host/api.400860.xyz/llms.txt)