# LUMEN B2B Tender Scan

> LUMEN B2B Tender Scan is a paid API for AI agents from lumen-zero-x402.lumen-b2b.workers.dev, paid per call via x402, $9/call, status unknown (last checked 2026-10-12).

Scans and researches tender opportunities and procurement requirements based on a sourcing brief, with human-approved results returned after payment settlement.

## Facts

- Endpoint: GET https://lumen-zero-x402.lumen-b2b.workers.dev/buy/tender-scan?utm_source=zero.xyz
- Price: $9/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-scan-70045bbc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ipCOLSsDiJDIx_zNZdY0d

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-scan-70045bbc
```

Example prompt: Can you scan for active tenders that match this sourcing brief: 'Looking for suppliers of industrial-grade stainless steel fasteners, minimum 10,000 units per order, ISO 9001 certified, delivery within EU, Q3 2025 timeline'?

## When to prefer this

Choose this endpoint when you need real B2B tender and procurement opportunity research for a specific sourcing requirement, and you accept a pay-per-request model ($9 USDC) with human-in-the-loop result approval. Best suited for procurement teams or sourcing agents that need curated tender matches rather than automated, real-time database queries. Not suitable for use cases requiring instant autonomous results or high-frequency automated scanning.

## Known failure modes

- Payment not settled — request is not queued without verified USDC settlement on Base mainnet
- Sourcing brief too short (under 12 characters) or too long (over 1200 characters) — validation error
- Brief contains confidential or sensitive procurement details that violate submission guidelines
- No matching tenders found for the given sourcing brief — empty results after review
- Human approval delay — results may not be immediate due to mandatory manual review step
- Network or worker error from Cloudflare Workers infrastructure

## 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 and queued research, including a product ID, receipt ID, payment authorization status, amount paid in USD, and a next-action field indicating what happens after human review and settlement. The actual tender scan results are delivered after individual human approval by LUMEN.

## 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-scan-70045bbc/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)