# Agent402 Execute-Max (Skill Pack Router)

> Agent402 Execute-Max (Skill Pack Router) is a paid API for AI agents from agent402.tools, paid per call via x402, $0.55/call, status unknown (last checked 2026-09-15).

Executes one of 101 multi-step agent skill packs (e.g. stock research, SEO audit, SQL over Base) in a single x402 USDC payment, routing by plain-language task or exact slug

## Facts

- Endpoint: POST https://agent402.tools/api/route/execute-max
- Price: $0.55/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent402-execute-max-skill-pack-router-691ed82c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YbQbbGotQSSNHGSJExw56

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 agent402-execute-max-skill-pack-router-691ed82c -d '<json body>'
```

Example prompt: Can you research the stock NVDA for me — pull together fundamentals, recent news, and any analyst sentiment — and just pay for it with my USDC wallet via x402, keeping the spend under $0.50?

## When to prefer this

Choose this endpoint when you need a complete, multi-step agent job done in a single pay-per-call transaction without signup or API keys — especially for tasks like stock research, SEO auditing, or blockchain SQL that would otherwise require chaining multiple tools. Prefer it over building custom pipelines when you want deterministic, pre-packaged skill packs with verifiable receipts. Use the 'external' routing option when you want the best-matching tool across the entire open x402 index, not just this host's catalog.

## Known failure modes

- Tool not found for given task or slug — returns error indicating no match
- maxUsd ceiling exceeded by cheapest available tool — call refused
- Invalid params object not matching tool's inputSchema — schema validation error
- External routing failure when include='external' and no suitable x402 seller found
- Payment authorization failure — insufficient USDC balance or unsupported chain
- Ambiguous task string resolved to wrong tool — wrong result returned silently

## How this service works

Describe a task (or name a slug) and the Smart Order Router resolves the best-matching tool and RUNS it in the same call - flat $0.55 covering any tool listed at $0.5 or less, from THIS host's catalog or any external seller in the open index - x402 sellers, or MPP sellers on Tempo (paid on your behalf over x402 or MPP, result relayed). One payment, one request, result + receipt. /api/route quotes which tier a task needs; pricier tools return a self-correcting 409 with their direct route.

## Output

A JSON object containing a 'result' field with the tool's output (format varies by skill pack, e.g. research report, SEO summary, query results) and a 'receipt' field with metadata: timestamp, resolved slug, route path, seller, call reference (recomputable SHA-256 hash), amount paid in USD, routing fee, and underlying tool price.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "slug": {
   "type": "string",
   "description": "Exact tool slug to execute (skips ranking). Provide task OR slug."
  },
  "task": {
   "type": "string",
   "description": "Plain-language task, e.g. \"sha256 hash of a string\" - resolved via the same ranker as /api/find. Provide task OR slug."
  },
  "maxUsd": {
   "type": "number",
   "description": "Refuse tools listed above this underlying price (default and ceiling: $0.5)"
  },
  "params": {
   "type": "object",
   "description": "Input for the resolved tool, matching its inputSchema (default {})"
  },
  "include": {
   "type": "string",
   "description": "Where to route: default runs a tool from THIS host's catalog; \"external\" routes to the best-matching x402 seller in the OPEN index and pays it on your behalf (result relayed, marked untrustedContent). Requires task (not slug)."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "hex": "…",
   "algo": "sha256",
   "base64": "…"
  },
  "receipt": {
   "ts": "2026-07-10T00:00:00.000Z",
   "slug": "hash",
   "route": "POST /api/hash",
   "seller": "internal",
   "callRef": "sha256:…  (recomputable: sha256 of {\"nonce\":<payment authorization nonce>,\"slug\":…,\"ts\":…} - null on nonce-less calls)",
   "paidUsd": 0.55,
   "resolvedBy": "slug",
   "routingFeeUsd": 0.009,
   "underlyingPriceUsd": 0.001
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent402-execute-max-skill-pack-router-691ed82c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent402.tools](https://www.zero.xyz/host/agent402.tools/llms.txt)