Tools
Tools
Small instruments for language-model work, and one that runs Python. Almost all of it happens in your browser; the few that reach the network say so on their own page.
11 live · 2 planned
- Tokens & Cost
Token Counter
Count tokens and price them against 2,400 models from every major provider.
makes network requests
- Text Processing
Text Diff
Compare two revisions lexically and semantically, with a real change ratio.
makes network requests
- Text Processing
Chunk Visualizer
See how a splitter carves a document, and where it cuts badly.
fully offline
- Protocol & Agents
MCP Tester
Probe an MCP endpoint: handshake, tools, schema conformance, latency.
makes network requests
- Run Code
Python Runner
Run Python in the tab, with real packages from PyPI.
makes network requests
- Text Processing
String Kit
Raw HTML to clean Markdown, plus thirty text transforms.
fully offline
- Text Processing
Document Viewer
Render Markdown, HTML, video, audio, and code from GitHub or web URLs for clean sharing.
makes network requests
- Text Processing
Regex Lab
Match, replace, filter and explain, with a guard against the patterns that hang.
fully offline
- Generators
Random Kit
Numbers, lists, strings and dice, from a source you pick.
fully offline
- Text Processing
Read Time
How long to read, and how long to say, measured from a real voice.
fully offline
- Run Code
Rest Reminder
A break clock that still fires when the window is minimised.
fully offline
- Tokens & Cost planned
Context Budgeter
Model a context window as a budget across system, tools, and history.
- Structured Data planned
JSON Schema Forge
Turn sample JSON into a strict tool-use schema.