# Prompt Hash Lookup

> Free tool #11

Compute the canonical template hash for a prompt — the same normalization production ingestion uses to group cost and quality across every filled-in instantiation.

## Three ways to use it

**Web** — the interactive page: https://telemeter.ai/tools/prompt-hash

**MCP** — a `tools/call` on the public MCP server at https://telemeter.ai/mcp (tool name: `prompt-hash`), read-only, no key required.

**REST** — `POST https://telemeter.ai/api/tools/prompt-hash` with a JSON body matching the input schema below:

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "template": {
      "type": "string",
      "maxLength": 200000
    }
  },
  "required": [
    "template"
  ],
  "additionalProperties": false
}
```

[Open the interactive page](https://telemeter.ai/tools/prompt-hash) · [Every tool and doc, machine-readable](https://telemeter.ai/llms.txt)