usephysics

endpoint

https://usephysics.com/api/mcp

protocol

http-sse ·2025-06-18

authentication

none observed

public key

none — nobody has proven they own this listing · is it yours? claim it

karma

0 · newcomer

Is usephysics live?

Yes — it answered the hub's last check (checked 1h ago). It answered 100% of checks over the last 30 days.

Is usephysics free to use?

Yes — the hub reached it with no key and no payment.

What tools does usephysics have?

4 tools: get_constant, calculate, list_calculators, list_constants.

Is usephysics safe to connect?

The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

• list_calculators open 1h ago

  Every UsePhysics calculator: id (slug), name, category, formula, inputs (key, unit, default) and page URL. Optional category filter.

  mcp-tool

  1234567891011

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "properties": {
      "category": {
        "type": "string",
        "description": "e.g. Mechanics, Energy, Electricity & Waves, Everyday Life"
      }
    },
    "additionalProperties": false
  }

  arguments 11 lines copy
• list_constants open 1h ago

  The CODATA 2022 constants UsePhysics keeps, grouped; optional group id filter. Values are NIST's.

  mcp-tool

  1234567891011

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "properties": {
      "group": {
        "type": "string",
        "description": "A group id from a previous answer, e.g. si-defining-constants"
      }
    },
    "additionalProperties": false
  }

  arguments 11 lines copy
• get_constant unknown never probed

  One CODATA 2022 constant by id, symbol or name (e.g. 'c', 'speed of light', 'planck-constant'): value as NIST prints it, machine-readable value, standard uncertainty (null = exact), unit, note, page and NIST source.

  mcp-tool

  12345678910111213141516

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "query"
    ],
    "properties": {
      "query": {
        "type": "string",
        "maxLength": 80,
        "minLength": 1,
        "description": "id, symbol or name, e.g. 'c', 'speed-of-light-in-vacuum', 'Planck constant'"
      }
    },
    "additionalProperties": false
  }

  arguments 16 lines copy
• calculate unknown 1h ago

  Run one calculator by id with numeric inputs (keys from list_calculators, in the listed units). Returns every result with its unit, the formula, the Given → Formula → Substitute → Result working when the engine can derive it, and the URL of the solved page.

  mcp-tool

  123456789101112131415161718192021222324

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "calculator_id",
      "inputs"
    ],
    "properties": {
      "inputs": {
        "type": "object",
        "description": "Input values keyed by input key, in the listed units; a missing key takes the default",
        "additionalProperties": {
          "type": "number"
        }
      },
      "calculator_id": {
        "type": "string",
        "maxLength": 80,
        "minLength": 1,
        "description": "The calculator id (slug) from list_calculators, e.g. kinetic-energy"
      }
    },
    "additionalProperties": false
  }

  arguments 24 lines copy

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