Free AI tools for founders, CTOs, and systems architects.

Estimate payback, monthly savings, LLM cost, and 36-month NPV for an agentic AI deployment.

FounderOpen tool

Agentic AI MVP Cost Estimator

Founders and CTOs

Estimate build, run, and team cost for an agentic AI MVP with hidden line items exposed.

FounderOpen tool

Agentic AI — Strategy & Readiness

Agentic AI Readiness Scorecard

Founders and innovation leads

Score readiness across data, operations, governance, team skills, and product surface.

OperatorOpen tool

Fractional CTO — Pricing & Engagement

Fractional CTO Cost Calculator

Startup founders

Compare fractional CTO, advisor, agency, and full-time costs by stage and region.

FounderOpen tool

Agentic AI — Engineering & Frameworks

AI Agent Framework Chooser

Staff engineers and architects

Choose between LangGraph, CrewAI, AutoGen, OpenAI Agents SDK, and custom orchestration.

AI Architecture — Cost Engineering

LLM Pipeline Cost Calculator

AI architects

Model chained calls, fan-out, retries, caching, and multi-step production LLM cost.

AI Architecture — Retrieval & Embeddings

RAG Cost & Sizing Calculator

Platform teams

Cost embeddings, vector storage, retrieval, reranking, and generation for RAG systems.

Vector Database Comparison Matrix

AI architects

Compare 10 leading vector databases by hosting, open source, hybrid search, free tier, and price. Filter and decide.

Agentic AI — Prompt Engineering

Agent System Prompt Builder

AI engineers

Build structured system prompts for LangGraph, CrewAI, and Anthropic tool-use patterns.

AI Architecture — Tokenization

LLM Tokenizer Visualizer

Prompt and platform engineers

Visualize token boundaries and compare prompt cost across GPT, Claude, Gemini, and Llama.

Blockchain — Cost Engineering

Smart Contract Cost Estimator

Blockchain teams

Estimate deploy and per-function gas cost across EVM and Cosmos SDK chains.

AI Strategy — Industry Use Cases

AI Use-Case Finder

Founders and consultants

Find ranked AI use cases by industry, function, scale, effort, and expected ROI band.

OperatorOpen tool

AI Architecture — Reliability & Risk

LLM Hallucination Risk Estimator

Architects and compliance leads

Estimate risk by task type, grounding strategy, guardrails, and domain sensitivity.

Prompt Injection Tester

AI engineers and security leads

Run 10 categorised adversarial probes against your system prompt. BYO API key, browser only, OWASP LLM Top-10 aligned.

Blockchain — Developer Utilities

Ethereum Address Validator (EIP-55)

Solidity engineers

Paste any Ethereum address to verify shape, length, and EIP-55 checksum. Returns the correct mixed case form.

Keccak256 Hash Generator

Solidity engineers

Compute Solidity keccak256 hashes for strings, hex bytes, or function signatures. Returns the 32 byte hash and 4 byte selector.

ABI Encoder & Decoder

Solidity engineers

Encode and decode EVM ABI parameters in your browser. Works for unverified contracts, raw calldata, and event logs.

BIP39 Mnemonic Generator & Validator

Blockchain teams

Generate or validate BIP39 mnemonic phrases of 12 to 24 words. Browser only. For testing and learning, never for real funds.

Solidity Storage Layout Visualizer

Architects and Solidity engineers

Plan Solidity storage packing slot by slot, spot wasted bytes, and derive mapping value slots via keccak256.

Wei / Gwei / Ether Converter

Solidity engineers

Convert between wei, kwei, mwei, gwei, szabo, finney, and ether with full BigInt precision. Optional ETH to USD line, browser only.

Blockchain — Token & Contract Generators

ERC-20 / ERC-721 Token Generator

Solidity engineers

Generate audited OpenZeppelin based ERC-20 token or ERC-721 NFT contracts. Toggle mintable, burnable, pausable, capped, permit, enumerable.