# TELAGO Payment Policy Before Signature

> TELAGO Payment Policy Before Signature is a paid API for AI agents from ozeejewwpjmabshxyitc.supabase.co, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-30).

Pre-flight check for a proposed x402 HTTP purchase — validates budget limits, seller trust, PayGuard, and Nemesis risk signals before any payment is signed or sent.

## Facts

- Endpoint: GET https://ozeejewwpjmabshxyitc.supabase.co/functions/v1/telago-egress-decision-v1/payment-policy-before-signature?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/telago-payment-policy-before-signature-a2b39f62
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7Kbb-8iaMza5g0AWFrQfC

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 telago-payment-policy-before-signature-a2b39f62
```

Example prompt: Before my agent pays for that x402 API call, check the proposed URL against my budget cap of $0.50 and verify the seller's trust score and PayGuard status so we know it's safe to sign.

## When to prefer this

Use this endpoint when an AI agent is operating autonomously and needs to gate every x402 micropayment with a pre-signature policy check — especially when enforcing spending budgets, screening unknown sellers, or running compliance checks before any USDC leaves a wallet. Prefer this over post-payment verification when the goal is to prevent bad payments entirely rather than audit them after the fact.

## Known failure modes

- Missing or invalid proposedUrl returns a validation error
- proposedUrl exceeds 1600 character limit — request rejected
- Seller trust lookup fails if the target URL is unreachable or unknown
- PayGuard or Nemesis service unavailability may cause degraded or error responses
- maxPriceUsd above 100 or below 0 is rejected by schema validation
- Non-GET method on the outer call returns method-not-allowed

## How this service works

Agent spend control and payment policy before signature. Check one proposed x402 purchase against budget, live payment terms, seller trust, PayGuard and Nemesis before money moves.

## Output

A structured policy decision object indicating whether the proposed x402 purchase is approved or denied, including budget compliance status, live payment terms assessment, seller trust rating, PayGuard verdict, and Nemesis risk signal — all evaluated before any funds are committed.

## 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": [
      "proposedUrl"
     ],
     "properties": {
      "method": {
       "enum": [
        "GET",
        "POST"
       ],
       "type": "string"
      },
      "maxPriceUsd": {
       "type": "number",
       "maximum": 100,
       "minimum": 0
      },
      "proposedUrl": {
       "type": "string",
       "maxLength": 1600,
       "minLength": 12
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/telago-payment-policy-before-signature-a2b39f62/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ozeejewwpjmabshxyitc.supabase.co](https://www.zero.xyz/host/ozeejewwpjmabshxyitc.supabase.co/llms.txt)