# ISO OpenVerbs Fuzzy Search

> ISO OpenVerbs Fuzzy Search is a paid API for AI agents from iso.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Fuzzy-searches ISO countries, currencies, and languages by partial name or code, returning ranked matches.

## Facts

- Endpoint: POST https://iso.openverbs.com/v1/search
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/iso-openverbs-fuzzy-search-ce6a6752
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iAjUoJyFJ5ul9mYRszQQZ

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 iso-openverbs-fuzzy-search-ce6a6752 -d '<json body>'
```

Example prompt: Search the ISO registries for 'euro' across all categories — countries, currencies, and languages — and show me up to 10 matches ranked by relevance.

## When to prefer this

Use this endpoint when you need fuzzy or partial-text search across ISO registries rather than exact-code lookup. Ideal for autocomplete UIs, resolving ambiguous user-typed country/currency/language names, or when you only know a fragment of a name or code. For exact known codes, prefer the sibling lookup endpoints.

## Known failure modes

- Empty query string rejected (minLength:1 validation error)
- Limit out of range (must be 1–100) returns validation error
- Invalid registry enum value returns 400 error
- No matches found returns empty results array
- Payment failure (x402) if USDC not provided

## How this service works

Fuzzy-search countries, currencies and languages by name or code. Scope with `registry` (defaults to all). Matches are ranked exact-code/name → prefix → substring.

## Output

Returns a ranked list of matching ISO registry entries (countries, currencies, and/or languages) ordered by match quality: exact code/name matches first, then prefix matches, then substring matches. Each result includes relevant ISO codes and names for the matched entity.

## 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",
     "required": [
      "query"
     ],
     "properties": {
      "limit": {
       "type": "integer",
       "maximum": 100,
       "minimum": 1,
       "description": "Maximum matches to return. Default 20."
      },
      "query": {
       "type": "string",
       "minLength": 1,
       "description": "Name or code fragment to search for."
      },
      "registry": {
       "enum": [
        "country",
        "currency",
        "language",
        "all"
       ],
       "type": "string",
       "description": "Which registry to search. Default \"all\"."
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/iso-openverbs-fuzzy-search-ce6a6752/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from iso.openverbs.com](https://www.zero.xyz/host/iso.openverbs.com/llms.txt)