# lookup-holiday (remote · lookup-holiday.encodari.workers.dev)

Real public holiday lookup for 206 countries via a rule-based calendar engine. Paid via x402.

- Trust score: 64/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-20

## Components

- remote · `lookup-holiday.encodari.workers.dev`: 64/100 (this document), [markdown](https://verifymcp.io/servers/encodi-lookup-holiday/lookup-holiday.md), [page](https://verifymcp.io/servers/encodi-lookup-holiday/lookup-holiday)

## Channel facts

- Endpoint: `https://lookup-holiday.encodari.workers.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-20.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 1 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 82/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 233 tokens (~233/item across 1 items; 1 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 30/100
  - Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### Claude

```bash
claude mcp add --transport http encodi-lookup-holiday https://lookup-holiday.encodari.workers.dev/mcp
```

### Codex

```toml
[mcp_servers.encodi-lookup-holiday]
url = "https://lookup-holiday.encodari.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "encodi-lookup-holiday": {
      "type": "remote",
      "url": "https://lookup-holiday.encodari.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add encodi-lookup-holiday --url https://lookup-holiday.encodari.workers.dev/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  encodi-lookup-holiday:
    url: "https://lookup-holiday.encodari.workers.dev/mcp"
```

### Other

```json
{
  "mcpServers": {
    "encodi-lookup-holiday": {
      "type": "http",
      "url": "https://lookup-holiday.encodari.workers.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-19 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-17 (score 63, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-15 (score 62, +1)

No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-13 (score 61, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-12 (score 60, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-08-11 (score 60)

First indexed and scored.

## MCP tools (1)

### `lookup_holiday` (~233 tokens)

Look up public holidays

Looks up real public/bank/school holidays for a country (and optionally a state/region) and year from a real rule-based calendar engine covering 206 countries — moveable holidays like Easter are computed astronomically, not guessed. Costs $0.01 USDC (Base) per call.

Input parameters:

- `country` (string, required): ISO 3166-1 alpha-2 country code (e.g. "US", "FR", "JP").
- `language` (string): Optional ISO 639-1 language code for holiday names (e.g. "es"). Falls back to the country default.
- `region` (string): Optional sub-region code within the state. Requires `state` to also be set.
- `state` (string): Optional subdivision code within the country (e.g. "CA" for California in "US").
- `types` (array): Optional filter: only return holidays of these types (e.g. ["public"]). Default: all types.
- `year` (integer): Calendar year to look up. Defaults to the current UTC year. Between 1900 and 2200.

Output parameters:

- `country` (string)
- `error`: Error message if valid is false; null otherwise.
- `holidays` (array): Holidays for the requested year, sorted by date.
- `region`
- `state`
- `valid` (boolean): false if the input (country/state/region/year/type) was invalid.
- `year` (number)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/encodi-lookup-holiday/lookup-holiday#diagnostics

## Score history

- 2026-08-20: 64
- 2026-08-19: 64
- 2026-08-18: 63
- 2026-08-17: 63
- 2026-08-16: 62
- 2026-08-15: 62
- 2026-08-14: 61
- 2026-08-13: 61
- 2026-08-12: 60
- 2026-08-11: 60

## Links

- Remote endpoint: https://lookup-holiday.encodari.workers.dev/mcp
- Repository: https://github.com/encodi/lookup-holiday
- Changelog RSS feed: https://verifymcp.io/servers/encodi-lookup-holiday/lookup-holiday.xml
- Changelog JSON feed: https://verifymcp.io/servers/encodi-lookup-holiday/lookup-holiday.json
- HTML version of this page: https://verifymcp.io/servers/encodi-lookup-holiday/lookup-holiday