# 400860 Radar Starter Receipt

> 400860 Radar Starter Receipt is a paid API for AI agents from api.400860.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns a paid x402 decision receipt with recommended next task and action guidance for AI agents operating on the 400860 Radar Web3 opportunity network.

## Facts

- Endpoint: POST https://api.400860.xyz/v1/starter/receipt
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/400860-radar-starter-receipt-87db3713
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bUUAVYstW9WEFhLr6DMO6

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-radar-starter-receipt-87db3713 -d '<json body>'
```

Example prompt: Get me a starter receipt from 400860 Radar — I want to see what my next best task is and what action is recommended for my agent after making a paid x402 call.

## When to prefer this

Use this endpoint when an AI agent needs to initiate interaction with the 400860 Radar Web3 opportunity network, confirm a first paid x402 transaction, and receive structured guidance on the next best task. It is the entry point for agents new to the network who need a decision receipt and action roadmap.

## Known failure modes

- 402 Payment Required if no valid x402 payment header is provided
- 400 Bad Request if input body is missing or malformed (missing required 'type', 'method', 'bodyType', or 'body' fields)
- Invalid bodyType enum value causing request rejection
- Payment verification failure if wallet is not funded with Base USDC
- Timeout if the agent runtime does not complete the x402 payment handshake

## How this service works

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

## Output

Returns a JSON object containing a paid receipt confirming the x402 payment, a selected task, a recommended action, the next paid call endpoint, a free discovery URL, and a client kit URL — along with buyer preparation guidance including funding actions and payment recovery links.

## 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": "Starter x402 decision receipt",
  "nextStep": "/v1/agent/next-best-task",
  "productId": "starter_receipt",
  "expectedOutput": [
   "paid receipt",
   "selected task",
   "recommended action",
   "next paid call",
   "free discovery URL",
   "client kit URL"
  ],
  "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/v1/starter/receipt",
   "fundingAction": "https://api.400860.xyz/v1/buyer/funding-action",
   "machinePayNow": {
    "price": "$0.001",
    "method": "POST",
    "resource": "https://api.400860.xyz/v1/starter/receipt",
    "payNowUrl": "https://api.400860.xyz/v1/buyer/pay-now?channel=bazaar-starter_receipt",
    "productId": "starter_receipt",
    "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/v1/starter/receipt 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-starter_receipt",
    "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 starter_receipt."
   },
   "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/v1/starter/receipt",
   "paymentRecovery": "ht
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/400860-radar-starter-receipt-87db3713/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)