# agentshelf.syntexa.ch Plus Code Validator

> agentshelf.syntexa.ch Plus Code Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-02).

Checks whether a given string is a valid full Open Location Code (Plus Code)

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-plus-code?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-plus-code-validator-5987d6df
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ky8Y9hCLByvwJjvVm1j6e

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 agentshelf-syntexa-ch-plus-code-validator-5987d6df -d '<json body>'
```

Example prompt: Can you check whether '8FVC9G8F+6W' is a valid full Open Location Code?

## When to prefer this

Use this endpoint when you need programmatic confirmation that a string is a fully-formed Open Location Code (Plus Code) rather than a short/truncated code or arbitrary string. Prefer the free sandbox endpoint POST /v1/sandbox/check-plus-code for testing or non-production use to avoid the $0.006 USDC charge. Choose this over general regex or manual validation when accuracy and a structured API response are required in a paid, production agentic workflow.

## Known failure modes

- Empty string or missing value field returns validation error
- String exceeding 20000 characters rejected by schema
- Malformed request body returns HTTP 400
- Payment not provided or insufficient results in HTTP 402
- Network timeout if service is temporarily unavailable

## How this service works

Call when an agent needs whether a string is a full Open Location Code. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/check-plus-code first.

## Output

A boolean or structured response indicating whether the input string is a valid, full Open Location Code (Plus Code), conforming to the OLC specification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "description": "JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN."
  },
  "value": {
   "type": "string",
   "examples": [
    "8FVC9G8F+6W"
   ],
   "maxLength": 20000,
   "minLength": 1,
   "description": "Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar."
  },
  "schema": {
   "description": "JSON Schema document for schema-check SKUs. Omit it on string checks."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentshelf-syntexa-ch-plus-code-validator-5987d6df/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)