"An introduction to prompt engineering" matching MCP connectors:

Intake desk for AI agents: bridges construction quotes to KIRA fair-price audit and EHN check.

Ready for a new way to bill pay? Pay any US bill in a snap, right from your AI assistant. Describe or snap a photo of your bill (electric, water, gas, internet, phone, medical, credit card, rent, parking tickets, traffic violations and more) and Papaya reads it, then hands you a secure link to pay by card. Fast, secure, and no juggling twelve logins, with full or partial payments and status updates. Available in the US only. Powered by Papaya (papayapay.com).

Teardrop is the native economic layer for AI agents, providing a robust suite of tools for multi-chain portfolio tracking, DeFi yield analysis, and gas estimation. It enables autonomous agents to securely find Web3 data and manage micro-payments on-chain with zero human intervention.

An MCP server that audits the fairness of construction and renovation estimates in Japan. Provides fair-price ranges, overcharge detection, and verifiable unit-cost data based on JCCDB (65,729 items, DOI-backed).

CompanyLens is a remote MCP server giving AI agents instant access to official company registry data across 19 jurisdictions in Europe, the Americas, and Asia-Pacific. Eighteen read-only tools let you search companies and people, look up officers and beneficial owners, map corporate networks through shared directors, screen names against the UK disqualified directors register, find every company at a registered address, and pull filing history — all from a single connector. Visit our website: https://companylens.io

Quant tools + an NFL fantasy draft assistant for AI agents — Kalshi & Polymarket EV, edge, ADP.

Verified 2026 Canadian payroll math: employer total cost, employee take-home, net-to-gross. Free.

Live prediction-market odds + an audited AI-vs-market forecast experiment (public dataset). Free.

Informational Q&A: money owed to consumers (deposits, claims, unclaimed funds). No debt relief.

Cited Hermès price & resale market data as MCP tools, with attribution. Not affiliated.

Funding stress early warning for US money markets from free public data, with an honest backtest.

Track startup engineering acceleration from public GitHub data before funding rounds

Live TCG card and decklist prices for AI assistants. 22+ games, no account, ready-to-buy links.

Pre-signature x402 payment-risk oracle. AI agents call forecast_payment before paying a counterparty and get a GO / HOLD / STOP verdict from settlement reputation, price-anomaly (quoted vs the payee's own median), and OFAC sanctions screening — plus a third-party-verifiable Ed25519 signed receipt. Verdict only; never takes custody. Free under $10 at risk; returns an x402 payment challenge over that.

Deterministic market-state engine for trading agents — zero LLM in the signal path. 8 tools: structural market state & phase, action gate (GO/WATCH/HOLD) as a transition posture, entry/target/invalidation coordinates, bar-by-bar state timeline, composed view cards, and pre-trade intent validation. Every output traces to a bar-stamped ledger with a public daily self-scoring track record (misses included). Crypto + TradFi synthetics (gold, oil, S&P 500, Tesla, NVIDIA, KOSPI 200).

Hosted MCP server exposing US hospital procedure cost data to AI assistants

Free MCP server for SaaS founders. Ask Claude how many months of cash you're left with, factoring in MRR growth and churn, and it calls this tool instead of estimating. Also handles break-even timing and burn multiple. No signup, no API key, no backend to set up. Add the connector, ask your numbers, get a real answer.

Free MCP server for founders. Ask Claude how many months of cash you have left, and it calls this tool instead of estimating. Also handles break-even math and burn multiple. No signup, no API key, no backend to set up. Add the connector, give it your numbers, get a real answer.

Real, bindable home & auto insurance quotes via MCP — actual carrier rates, not estimates. Texas today, expanding across the US. Agents check eligibility, run a live multi-carrier quote, compare carrier-masked options, and hand the customer a secure link for a licensed agent to finalize the bind (never an automated purchase). 11 tools; read-only tools are open, quoting/binding tools use a free self-serve API key.

Debt payoff planner: snowball vs avalanche — months to debt-free & total interest. Remote MCP.