# LUMEN B2B Tender Hot Lead Research

> LUMEN B2B Tender Hot Lead Research is a paid API for AI agents from lumen-zero-x402.lumen-b2b.workers.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-12).

Submits a B2B sourcing brief to receive a hot tender lead or procurement opportunity researched and curated by LUMEN analysts, paid per-request via USDC on Base mainnet.

## Facts

- Endpoint: GET https://lumen-zero-x402.lumen-b2b.workers.dev/buy/tender-hot-lead?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lumen-b2b-tender-hot-lead-research-985b44a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0eeO2-PtBg8GOvPezJYnJ

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 lumen-b2b-tender-hot-lead-research-985b44a8
```

Example prompt: I need a hot tender lead for industrial-grade stainless steel pipe fittings — we're looking for suppliers or buyers in Europe capable of handling orders above $500K; here's our brief: 'Seeking verified European distributors or manufacturers of ASTM A403 stainless steel pipe fittings for oil & gas projects, minimum annual volume 500K USD, delivery within 90 days.'

## When to prefer this

Choose this endpoint when you need a human-curated, verified hot tender lead for a specific B2B sourcing requirement and are willing to pay $1 USDC per submission with the understanding that final delivery involves human approval by LUMEN analysts. Prefer this over automated scraping or commodity supplier databases when lead quality, verification, and real procurement intent matter more than speed or volume.

## Known failure modes

- Payment not settled on Base mainnet — request queued but not processed until USDC payment confirmed
- Sourcing brief too short (under 12 chars) or too long (over 1200 chars) — validation error returned
- Brief contains confidential or disqualifying content — rejected by LUMEN review
- Network or worker timeout — no receipt generated, retry required
- Payment authorization not verified — paymentAuthorizationVerified returns false, no lead dispatched

## How this service works

Real B2B sourcing and procurement research. Seven paid endpoints on Base mainnet. Payment settlement requires individual human approval by LUMEN. No autonomous purchases.

## Output

Returns a JSON object confirming payment authorization, a product ID and receipt ID for the submitted brief, the amount charged in USD, a status string, and a next action field indicating what happens after LUMEN processes the lead (e.g. delivery timeline or follow-up instructions). Actual lead data is delivered after human review and settlement verification.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "requirement": {
       "type": "string",
       "maxLength": 1200,
       "minLength": 12,
       "description": "Nonconfidential sourcing brief; 12-1200 characters; queued only after a verified settlement."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "productId",
      "amountUsd"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "status": {
       "type": "string"
      },
      "amountUsd": {
       "type": "number"
      },
      "productId": {
       "type": "string"
      },
      "receiptId": {
       "type": "string"
      },
      "nextAction": {
       "type": "string"
      },
      "paymentAuthorizationVerified": {
       "type": "boolean"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lumen-b2b-tender-hot-lead-research-985b44a8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lumen-zero-x402.lumen-b2b.workers.dev](https://www.zero.xyz/host/lumen-zero-x402.lumen-b2b.workers.dev/llms.txt)