# PMCS Taxonomy Code Listing

> PMCS Taxonomy Code Listing is a paid API for AI agents from api.predictionmarketdata.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns the list of valid PMCS taxonomy codes used to filter and categorize prediction-market searches.

## Facts

- Endpoint: GET https://api.predictionmarketdata.io/prediction-markets/taxonomy
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pmcs-taxonomy-code-listing-0918248d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rk_hQfIidylqOAySo_OoS

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 pmcs-taxonomy-code-listing-0918248d
```

Example prompt: What are all the valid PMCS taxonomy codes I can use to filter prediction-market searches on predictionmarketdata?

## When to prefer this

Use this endpoint before or alongside search/filter operations on prediction markets to discover which PMCS taxonomy codes are valid inputs. Essential for building dynamic filters, populating dropdowns, or validating user-supplied category values prior to running a market search.

## Known failure modes

- Service unavailable returns 5xx error
- Payment failure returns 402 when x402 payment is not provided or is insufficient
- Empty or malformed response if taxonomy data is temporarily unavailable

## How this service works

List valid PMCS taxonomy codes used to filter prediction-market searches.

## Output

A list of valid PMCS taxonomy codes and their associated labels or descriptions, which can be used as filter values when querying or searching prediction markets across exchanges.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "taxonomy": [
   {
    "code": "GEO",
    "name": "Geopolitical",
    "level": "categories",
    "updated_at": "2026-02-12T00:00:00Z",
    "taxonomy_id": "categories:GEO",
    "taxonomy_version": "3.5"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pmcs-taxonomy-code-listing-0918248d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.predictionmarketdata.io](https://www.zero.xyz/host/api.predictionmarketdata.io/llms.txt)