# EU Legal Act Implementation Dates

> EU Legal Act Implementation Dates is a paid API for AI agents from recht.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-15).

Returns labelled dates for an EU legal act from EUR-Lex Cellar: entry into force, date of application, transposition deadline (for directives), and end of validity.

## Facts

- Endpoint: POST https://recht.halowerk.com/v1/implementation-deadline
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/eu-legal-act-implementation-dates-9da1a650
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-onkINkrSVSw-hR6t3s9y

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-legal-act-implementation-dates-9da1a650 -d '<json body>'
```

Example prompt: What are the key implementation dates for EU Regulation 2016/679 — specifically when it entered into force, when it started applying, and when (if ever) it expires?

## When to prefer this

Use this endpoint when you need structured, labelled implementation dates specifically for EU legal acts stored in the EUR-Lex Cellar. It is the right choice when you need to distinguish between entry into force, date of application, transposition deadline, and end of validity — concepts that are frequently confused. Prefer it over generic web search when you need authoritative, machine-readable dates directly from the Publications Office's Cellar triplestore. It is especially valuable for compliance workflows involving EU directives (transposition tracking) or regulations with delayed application dates.

## Known failure modes

- Unknown or invalid act identifier returns an error or empty result
- Act has no Cellar record (e.g. non-EU legislation) causes a lookup failure
- Some dates may be absent if not yet set or not applicable (e.g. directives have transposition deadlines but most regulations do not)
- Malformed CELEX number or unsupported identifier format may cause a parse error
- Network or upstream EUR-Lex Cellar unavailability results in a service error

## How this service works

Returns the dates Cellar records for a legal act, each labelled with what it actually means. Entry into force is when the act exists as law; date of application is when it is applied and for regulations frequently falls two years later; the transposition deadline applies only to directives and is when member states must have adapted national law; end of validity is when it stops applying.

## Output

A set of labelled date records pulled from the EUR-Lex Cellar for the requested legal act, covering: entry into force (when the act became law), date of application (when obligations take effect, often two years after entry into force for regulations), transposition deadline (only for directives — when member states must have enacted national implementing legislation), and end of validity (when the act ceases to apply). Each date is clearly labelled with its legal meaning.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "celex": {
   "type": "string",
   "maxLength": 30,
   "minLength": 5
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/eu-legal-act-implementation-dates-9da1a650/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from recht.halowerk.com](https://www.zero.xyz/host/recht.halowerk.com/llms.txt)