Best Alternatives to Shipping Rates & Postage Calculator

Plugin

Runtime: Remote (SSE)

Circulara Observe MCP plugin - meters your AI agents' token spend and carbon, free tier.

Live US diesel prices and optimized stop-by-stop fuel plans for trucking. Free snapshot tool.

Aikstockdata — Korean Stock Data

Runtime: Remote (SSE)

KOSPI/KOSDAQ closing prices and DART regulatory filings. Free, no signup, no API key.

Parse receipts & invoices into structured JSON. Pay per call in USDC (x402 on Base), no API key.

Mcp

Runtime: npx

Apideck Unified API MCP — 229 tools across 200+ SaaS connectors (accounting, HRIS, file storage).

Alpha Vantage Mcp

Runtime: npx

MCP server providing real-time and historical stock, crypto, options, ETF, and earnings data via Alpha Vantage API.

Provide your AI coding tools with token-efficient access to up-to-date technical documentation for…

Pay-per-use tool API for AI agents. Free tier, x402 USDC micropayments, or API key.

Hr Management Ai MCP server. Tools: leave calculator, payroll estimator, performance review....

Oathscore

Runtime: python

MCP server for checking market conditions and evaluating the reliability of financial data APIs.

Alpaca Mcp

Runtime: npx

MCP server for Alpaca API to manage stock/crypto portfolios, place various order types, and access market data.

Pay-per-call safety guards for AI agents: injection, tool-call, signing, secret, x402-trust.