# PayanAgent Tokenized Stock Execution Cost Snapshot

> PayanAgent Tokenized Stock Execution Cost Snapshot is a paid API for AI agents from payanagent.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns the effective round-trip trading cost for a tokenized stock: best executable buy/sell prices across venues, effective spread percentage, and pool fee plus constant-product price impact model.

## Facts

- Endpoint: POST https://payanagent.com/x402/kh78v795xtd79bzbvrb7m84re18b8tcw
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/payanagent-tokenized-stock-execution-cost-snapshot-7ae4fcc7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uuq3HGlD00Dj8iOcuJA9g

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 payanagent-tokenized-stock-execution-cost-snapshot-7ae4fcc7 -d '<json body>'
```

Example prompt: What's the effective round-trip execution cost to trade tokenized TSLA right now — give me the best executable buy and sell prices, the spread percentage, and the price impact for a $500 clip using the standard pool fee.

## When to prefer this

Choose this endpoint when an execution agent needs a real-time, model-based estimate of the full round-trip cost to trade a tokenized stock — including spread, pool fees, and constant-product price impact — before committing a trade. Prefer this over generic price feeds when you need executable bid/ask prices across multiple venues rather than just mid-price quotes.

## Known failure modes

- Unknown or unsupported ticker symbol returns an error or empty result
- Clip size too large for available liquidity may produce unrealistic impact estimates
- Network or venue data unavailability may result in stale or missing price data
- Invalid feePct value outside expected range may cause computation errors
- Missing required ticker field returns a validation error

## How this service works

Effective round-trip execution cost for a tokenized stock right now: best executable buy vs best executable sell price for a small reference clip across all venues, and the resulting effective spread %, modeled with pool fee + constant-product impact. Send { ticker, clipUsd?, feePct? }. The cost-to-trade snapshot for execution agents.

## Output

Returns the best executable buy price, best executable sell price, effective spread as a percentage, modeled pool fee cost, and constant-product price impact for the specified tokenized stock ticker and clip size — giving a real-time cost-to-trade snapshot.

## 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"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/payanagent-tokenized-stock-execution-cost-snapshot-7ae4fcc7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from payanagent.com](https://www.zero.xyz/host/payanagent.com/llms.txt)