# EU AI Act Article 50 Transparency Obligation Lookup

> EU AI Act Article 50 Transparency Obligation Lookup is a paid API for AI agents from reg.chainverdict.xyz, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-16).

Returns the specific Article 50 transparency controls, exemption notes, and applicable dates for a given AI obligation category under the EU AI Act.

## Facts

- Endpoint: GET https://reg.chainverdict.xyz/v1/aiact/art50
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/eu-ai-act-article-50-transparency-obligation-lookup-b2346bd6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_b2RtMyZcBBqTkygPUllvw

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 eu-ai-act-article-50-transparency-obligation-lookup-b2346bd6
```

Example prompt: What Article 50 transparency controls apply to chatbots under the EU AI Act, including any exemptions and the date those obligations kicked in?

## When to prefer this

Use this endpoint when you need authoritative, structured lookup of Article 50 transparency obligations by specific category under the EU AI Act — particularly when you need the exact applicable date and exemption notes. Prefer this over general legal databases when you need machine-readable output suitable for compliance automation. It is especially valuable for distinguishing Article 50 obligations (undeferred) from high-risk obligations deferred by the AI Omnibus.

## Known failure modes

- Missing required 'kind' query parameter returns a validation error
- Invalid or unrecognized 'kind' value not in the allowed enum returns an error
- Service unavailable or payment failure (x402 protocol) returns a 402 or 5xx response
- Network timeout if the service is temporarily unreachable

## How this service works

Which AI Act Article 50 transparency controls apply to a given obligation category, with the exemption note and the applicable date. Article 50 has applied since 2 August 2026 and was NOT deferred by the AI Omnibus, which moved only the high-risk obligations.

## Output

Returns the transparency controls required under EU AI Act Article 50 for the specified obligation category (chatbot, synthetic_content, deepfake, or public_interest_text), along with any applicable exemption notes and the date from which those obligations apply (2 August 2026 for Article 50, unaffected by the AI Omnibus).

## 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": [
      "kind"
     ],
     "properties": {
      "kind": {
       "type": "string",
       "description": "Article 50 obligation category: chatbot, synthetic_content, deepfake, public_interest_text"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/eu-ai-act-article-50-transparency-obligation-lookup-b2346bd6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from reg.chainverdict.xyz](https://www.zero.xyz/host/reg.chainverdict.xyz/llms.txt)