# VIA Router — Deep Route (Buyer-Side Agent Router)

> VIA Router — Deep Route (Buyer-Side Agent Router) is a paid API for AI agents from via-router.floot.app, paid per call via x402, $1/call, status unknown (last checked 2026-10-10).

Accepts a natural-language intent and returns a curated decision brief with ranked options, rationale, and watchouts across services, APIs, products, or information — paid via x402 USDC on Base.

## Facts

- Endpoint: POST https://via-router.floot.app/_api/deep_route?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/via-router-deep-route-buyer-side-agent-router-713b94a4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bB90yOOpFbPTrKqEqoLMp

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 via-router-deep-route-buyer-side-agent-router-713b94a4 -d '<json body>'
```

Example prompt: Use VIA Router to deep-route my search: I want to find and compare the best APIs for sending transactional emails to customers in Brazil — use the 'services' market, country BR, and English.

## When to prefer this

Choose this endpoint when an AI agent or user needs a buyer-side recommendation across multiple competing services, APIs, products, or information sources — especially when the decision requires sourced research and ranked rationale rather than a raw search result list. Ideal when the user has a clear intent but is unsure which vendor, API, or service to select. Prefer this over generic web search when you want a structured decision brief with watchouts and selection reasoning, and when micropayment via x402 USDC on Base is acceptable.

## Known failure modes

- Intent too vague or too short (minLength 2, maxLength 500) — returns validation error
- Invalid country code (must be ISO 3166-1 alpha-2 uppercase, e.g. 'US') — returns 422
- Insufficient USDC balance or x402 payment failure — request not processed, payment not settled
- Unsupported market enum value — returns schema validation error
- Language not in ['en','pt'] — returns validation error
- No relevant sources found for intent — may return sparse or low-confidence decision brief

## How this service works

VIA is a paid buyer-side router for AI agents and humans. Compare APIs, services, products and sourced research with x402 USDC payments on Base.

## Output

A JSON object containing: a decision brief summarizing the recommendation, a list of selection rationale points explaining why the top option leads, a list of watchouts (unverified facts to check), the number of sources considered, a paid confirmation flag, tier label ('deep'), and a blockchain settlement object with the Base network transaction hash confirming the x402 USDC payment.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "intent": {
   "type": "string",
   "maxLength": 500,
   "minLength": 2
  },
  "market": {
   "enum": [
    "auto",
    "services",
    "commerce",
    "information",
    "travel"
   ],
   "type": "string"
  },
  "country": {
   "type": "string",
   "pattern": "^[A-Z]{2}$"
  },
  "language": {
   "enum": [
    "en",
    "pt"
   ],
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "paid": true,
  "tier": "deep",
  "watchouts": [
   "Unverified facts to check"
  ],
  "settlement": {
   "network": "eip155:8453",
   "transaction": "0x..."
  },
  "decisionBrief": "Decision summary",
  "sourcesConsidered": 4,
  "selectionRationale": [
   "Why this option leads"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/via-router-deep-route-buyer-side-agent-router-713b94a4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from via-router.floot.app](https://www.zero.xyz/host/via-router.floot.app/llms.txt)