# Turkish IBAN, Tax Number & National ID Validation

> Checksum validation of Turkish IBANs, tax numbers (VKN) and national IDs (TCKN). Nothing stored.

- name: io.github.foster-ops/turkey-identifier-validation
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 79/100 flags: no-repository
- quality: 96/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.foster-ops%2Fturkey-identifier-validation
- tools: https://api.protogrid.dev/v1/servers/io.github.foster-ops%2Fturkey-identifier-validation/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "turkey-identifier-validation": {
      "type": "http",
      "url": "https://foster-mcp.esakiz.workers.dev/validate/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 99
- freshness: 100
- provenance: 45
- drivers: +website +reachable +uptime-97% +updated-10d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 96/100 (strong)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 3 of 3 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 461 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 3, about 461 tokens to load them all
- tool set hash: 30908de8b8c729affd4006a4a74dc912
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.foster-ops/turkey-identifier-validation.svg)](https://protogrid.dev/servers/io.github.foster-ops/turkey-identifier-validation)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://foster-mcp.esakiz.workers.dev/validate/mcp (streamable-http, auth none, reachable true, uptime30d 0.9736842)

## Packages

_none_

## Tools (3)

- `validate_iban`: Validates a Turkish (TR) IBAN: 26 characters, structure, reserved digit and ISO 13616 mod-97 checksum. Returns the normalized and grouped form, the 5-digit bank code and the account number part. Format and checksum only: a valid result does not prove the number is registered or belongs to anyone. Inputs are not stored or logged.
- `validate_national_id`: Validates the check digits of an 11-digit Turkish national identity number (T.C. Kimlik Numarası, TCKN), which individuals also use as their tax number. The number is personal data: it is not echoed back. It does not confirm the person exists. Format and checksum only: a valid result does not prove the number is registered or belongs to anyone. Inputs are not stored or logged.
- `validate_tax_number`: Validates the check digit of a 10-digit Turkish tax identification number (Vergi Kimlik Numarası, VKN) used by companies. Format and checksum only: a valid result does not prove the number is registered or belongs to anyone. Inputs are not stored or logged.