Free live-data MCP servers. Paste a URL.
18 servers, 78 tools. Each one reads data a model cannot know from training: today's prices, this week's levels, rules passed after the cutoff, exact calendar math. No token, no account.
Lake level MCP server
Live US lake and reservoir levels, read from the government gauge at call time.
4 tools · no tokenGold price per gram MCP server
Live gold price per gram by karat, in about 160 currencies.
4 tools · no tokenMinimum wage MCP server
US state minimum wages for 2026 and 2027, with tipped cash wages and scheduled increases.
5 tools · no tokenNo tax on overtime MCP server
The 2025-2028 overtime, tips and senior deductions, worked out the way Schedule 1-A does.
5 tools · no tokenPaycheck calculator MCP server
US take-home pay for 2025 and 2026, federal and all 50 states plus DC.
4 tools · no tokenUK income tax and salary MCP server
UK take-home pay for 2025/26 and 2026/27, Scottish bands and student loans included.
5 tools · no tokenDSCR loan calculator MCP server
Cent-exact DSCR, largest loan and rent needed for a rental property loan.
5 tools · no tokenUS federal holidays and business days MCP server
Exact US federal holidays and business-day math, 1971 to 2100.
4 tools · no tokenCups to grams MCP server
Cups to grams by ingredient, from measured weights, not guessed densities.
4 tools · no tokenCar loan interest deduction MCP server
The 2025-2028 car loan interest deduction, the new SALT cap and the 2026 brackets, worked out from IRS forms.
4 tools · no tokenSection 179 deduction MCP server
Section 179, bonus depreciation and vehicle limits for 2025 and 2026, plus the after-tax cost of an asset loan.
4 tools · no tokenSubdomain finder MCP server
Passive subdomain discovery from live certificate transparency logs, with DNS checks for live and dangling hosts.
5 tools · no tokenA/B test sample size calculator MCP server
Exact sample sizes, test durations and significance tests for A/B tests, including Fisher exact tests.
4 tools · no tokenRecipe nutrition calculator MCP server
Recipe calories and nutrients from USDA data, per serving, rounded the way a Nutrition Facts label requires.
5 tools · no tokenAP score distributions MCP server
Official College Board AP score distributions for 2026, 2025 and 2024, with percentiles and pass rate rankings.
4 tools · no tokenRetirement contribution limits MCP server
401(k), IRA and HSA limits, the age 60-63 catch-up and the 2027 Social Security COLA, from IRS and SSA notices.
4 tools · no tokenStudent loan RAP calculator MCP server
The new federal Repayment Assistance Plan, worked out from the 2025 law, plus the new loan limits and SAVE transition dates.
4 tools · no tokenACA premium tax credit MCP server
Marketplace premium tax credits for 2025 and 2026, including the 400% poverty-line cliff that returned in 2026.
One URL per server
In Claude.ai, open Settings, then Connectors, then Add custom connector, and paste the URL. In Claude Code, Cursor or VS Code, add it as a remote HTTP server. Each server page has the exact lines.
Example: Lake Level
claude mcp add --transport http lake-level \ https://lake-level-mcp.lipmichal.workers.dev/mcp
All servers are open source on GitHub and listed in the official MCP Registry. For invoices, quotes, PDFs and other back-office files, see the McpStamp servers.
What these servers collect is on the free servers privacy page.