---
title: "Server version & contract fingerprints"
method: GET
path: "/api/v1/version"
---

# Server version & contract fingerprints

`GET /api/v1/version`

## Request

- Base URL: `https://offnadir-delta.com`
- URL: `https://offnadir-delta.com/api/v1/version`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-API-Key`

Free and unauthenticated. Returns the live build identity — MCP server version, negotiated protocol versions, served tool count, and the schema / description / descriptor hashes — so an operator can confirm which build is live without holding an API key.

## Response `200`

Server identity.

- object
  - `name` string
  - `version` string
  - `protocol_versions` string[]
  - `latest_protocol_version` string
  - `tool_count` integer
  - `toolset` 'standard' | 'full'
  - `schema_hash` string
  - `description_hash` string
  - `descriptor_hash` string
  - `build_sha` string, nullable
  - `environment` string, nullable

## Other responses

- `429`: Error response with a stable machine-readable code.

---

[API](https://skmtc.dev/offnadir-delta/apis/off-nadir-delta-api.md) · [All operations](https://skmtc.dev/offnadir-delta/apis/off-nadir-delta-api/llms.txt) · [OpenAPI document](https://skmtc.dev/offnadir-delta/apis/off-nadir-delta-api/revisions/5cf3f2bed5a2?raw)