Agentic AI
AI Agent ROI Calculator
Estimate payback, monthly savings, LLM cost, and 36-month NPV for an AI agent deployment.
Founder / COOOpen tool →
Free Tools
Free AI tools for founders and technical teams.
Vendor-neutral calculators, scorecards, and planning tools for agentic AI, LLM cost engineering, AI strategy, blockchain cost modelling, and fractional CTO planning.
Agentic AI
Agentic AI MVP Cost Estimator
Estimate the build, run, and team cost of an agentic AI MVP with a defensible budget range.
Founder / Product LeadOpen tool →
AI Architecture
LLM Pipeline Cost Calculator
Cost a multi-step LLM pipeline with chained calls, retries, caching, batching, and fan-out.
Engineer / ArchitectOpen tool →
Agentic AI
Agentic AI Readiness Scorecard
Score your team's readiness to ship agentic AI across data, ops, governance, skills, and product surface.
Founder / CTOOpen tool →
Agentic AI
AI Agent Framework Chooser
Pick between LangGraph, CrewAI, AutoGen, OpenAI Agents SDK, and custom orchestration from six constraints.
EngineerOpen tool →
AI Architecture
RAG Cost & Sizing Calculator
Cost a RAG system end to end across embeddings, storage, retrieval, reranking, and generation.
Engineer / ArchitectOpen tool →
Agentic AI
Agent System Prompt Builder
Build a structured system prompt for an agent with role, tools, memory, fallbacks, output format, and lint checks.
EngineerOpen tool →
AI Architecture
LLM Tokenizer Visualizer
Visualize approximate token boundaries, compare prompts, and estimate token cost across common model families.
Engineer / PMOpen tool →
Live
Estimate deploy and per-function cost across Ethereum, Arbitrum, Base, Polygon, BSC, and Cosmos-style chains.
Solidity / Cosmos EngineerOpen tool →
Fractional CTO
Fractional CTO Cost Calculator
Compare fractional CTO, advisor, full-time, and agency cost bands by stage, region, hours, and scope.
FounderOpen tool →
AI Strategy
AI Use-Case Finder
Find ranked AI use cases by industry, function, and company scale with effort, ROI, and architecture pattern tags.
Founder / ConsultantOpen tool →
AI Architecture
LLM Hallucination Risk Estimator
Estimate hallucination risk for an LLM use case based on task type, grounding, guardrails, and domain risk.
PM / ArchitectOpen tool →
More free developer tools
- Ethereum Address Validator (EIP-55)
Paste any Ethereum address to verify shape, length, and EIP-55 checksum. Returns the correct mixed case form.
- Keccak256 Hash Generator
Compute Solidity keccak256 hashes for strings, hex bytes, or function signatures. Returns the 32 byte hash and 4 byte selector.
- ABI Encoder & Decoder
Encode and decode EVM ABI parameters in your browser. Works for unverified contracts, raw calldata, and event logs.
- BIP39 Mnemonic Generator & Validator
Generate or validate BIP39 mnemonic phrases of 12 to 24 words. Browser only. For testing and learning, never for real funds.
- ERC-20 / ERC-721 Token Generator
Generate audited OpenZeppelin based ERC-20 token or ERC-721 NFT contracts. Toggle mintable, burnable, pausable, capped, permit, enumerable.
- Solidity Storage Layout Visualizer
Plan Solidity storage packing slot by slot, spot wasted bytes, and derive mapping value slots via keccak256.
- Vector Database Comparison Matrix
Compare 10 leading vector databases by hosting, open source, hybrid search, free tier, and price. Filter and decide.
- Prompt Injection Tester
Run 10 categorised adversarial probes against your system prompt. BYO API key, browser only, OWASP LLM Top-10 aligned.
- Wei / Gwei / Ether Converter
Convert between wei, kwei, mwei, gwei, szabo, finney, and ether with full BigInt precision. Optional ETH to USD line, browser only.
- BIP39 Mnemonic Validator & Last Word Finder
Check a BIP39 seed phrase word by word, verify the checksum, get spelling fixes, and list every valid last word. Browser only, test phrases only.
- Multi-Agent Pattern Chooser
Answer nine questions to pick a multiagent orchestration pattern: supervisor, handoff, sequential, concurrent, group chat, hierarchical, or evaluator loop.
- Vector Database Cost Calculator
Estimate vector storage size and monthly cost on Pinecone, Weaviate, Zilliz, turbopuffer and pgvector, with plan minimums and every formula shown.
Built around defensible assumptions
Each live tool exposes its formulas, data sources, last-reviewed dates, and sharing state. The roadmap starts with commercial-intent agentic AI and fractional CTO planning tools, then expands into pipeline cost, RAG sizing, prompt engineering, tokenization, blockchain deployment cost, use-case discovery, and hallucination risk.