Tools

Interactive things. Play around.

Productivity

Local time

16:51:00

Saturday

Jun 13, 2026

Pomodoro Timer

Customizable focus sessions with chimes. →

Task Manager

Tasks with subtasks, statuses, markdown export. →

Developer

JSON Formatter

Formatted output appears here

Regex Tester

UUID Generator

Click Generate to create a UUID v4

Timestamp Converter

Cron Expression Builder

Minute

Hour

Day (M)

Month

Day (W)

* * * * *

Every minute

HTTP Status Codes

200OKRequest succeeded

201CreatedResource created successfully

204No ContentSuccess with no response body

301Moved PermanentlyResource permanently moved to new URL

302FoundResource temporarily at different URL

304Not ModifiedResource unchanged since last request

400Bad RequestServer cannot process malformed request

401UnauthorizedAuthentication required

402Payment RequiredPayment required for access. See x402 protocol for AI-native payments.

403ForbiddenServer refuses to authorize request

404Not FoundResource does not exist

405Method Not AllowedHTTP method not supported for resource

408Request TimeoutServer timed out waiting for request

409ConflictRequest conflicts with current server state

429Too Many RequestsRate limit exceeded

500Internal Server ErrorUnexpected server-side error

502Bad GatewayInvalid response from upstream server

503Service UnavailableServer temporarily unavailable

504Gateway TimeoutUpstream server timed out

Writing

Word Counter

Words: 0

Chars: 0

Sentences: 0

Reading: ~0 min

Token Counter(estimate)

Est. tokens: 0

GPT-4 input: ~$0.000000

Claude input: ~$0.000000

Estimate based on ~1.3 tokens/word. Actual count varies by model tokenizer.

Finance

Valuation & Dilution Calculator

Model funding rounds, dilution, and ownership distribution.

Round 1

Pre-money ($)

Investment ($)

AI Tools

Prompt Improver

Paste a prompt, get a better version.

System Prompt Generator

Describe a use case, get a system prompt template.

Resources

Curated Links

Anthropic CookbookPrompt engineering patterns OpenAI CookbookAPI usage examples Awesome MCP ServersCommunity MCP servers LangChainLLM orchestration framework Vercel AI SDKStreaming AI UI toolkit Cloudflare SkillsAI agent skills Prompt Engineering GuideComprehensive prompt guide AI Agent FrameworksCurated agent repos LangSmithLLM observability & evaluation DeepEvalLLM evaluation framework OpenCodeAI-native CLI coding agent Dotfiles (holman)Topical dotfile organization ChezmoiManage dotfiles across machines Nix Home ManagerDeclarative user environments