Agent skill · free

Prompt Variants Skill

Installable skill: turn one goal + notes into distinct Claude, GPT, and Grok prompts agents can forge without accounts.

Use freeFull core runs in your browser — no account required.

ProFree skill. One-time unlock on this device.

Local-firstYour data stays in the browser unless you export it.

Tip: Tab moves fields · primary action is the gold button

Open Forge Bridge Flagship MCP Web twin SKILL.md

When to use

Tools

prompt_variants
reading_time
word_freq
diff_text

Steps

Capture goal (one sentence) and dense notes (constraints, audience, must-includes).
Call prompt_variants with goal + notes.
Optionally reading_time / word_freq on long source notes before forging.
If revising, diff_text old prompt vs new.
Human twin: Prompt Context Forge on the hub for magic fill.

Example call

curl -sS https://mcp.justindkamen.com/tools \
  -H 'content-type: application/json' \
  -d '{"name": "prompt_variants", "arguments": {"goal": "Write a launch note for a free JSON\u2192TS tool", "notes": "Indie makers \u00b7 local-first \u00b7 no account"}}'

{
  "name": "prompt_variants",
  "arguments": {
    "goal": "Write a launch note for a free JSON\u2192TS tool",
    "notes": "Indie makers \u00b7 local-first \u00b7 no account"
  }
}