The real catalog of tools for AI agents

88 free engineering calculators: RF link budgets, LoRa/Meshtastic, PCB, solar, homelab. Keyless.

Evaluate a+b style arithmetic. Expression discarded.

GSA CALC+ ceiling labor rates — what vendors may charge per hour under GSA

Free educational MCP for read-only eDiscovery news and TAR/review calculators.

GSA CALC+ awarded labor ceiling rates from 230K+ MAS contracts. 8 tools.

GSA CALC+ awarded labor ceiling rates from more than 230,000 MAS contract records. 8 tools.

Exact arithmetic for AI agents. Two independent engines cross-check every result.

Russian tax calculators (VAT, USN, NDFL) and FNS fiscal-status checks via MCP.

IP address and subnet calculator, CIDR notation

MCP server for IP calculations: subnets, CIDR, ranges, network info.

US federal income tax estimates: brackets, marginal rate, effective rate. Planning values.

21 MCP tools for math, randomness, dates, encoding, hashing, and more — deterministic and accurate.

Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size.

Maths a model gets wrong: units with dimensional checking, equations, sheets. 5 tools, local.

Strength Standards Calc: the site's own MCP server — dataset, enquiry (enquiry = a human...

Concierge MCP for agentic workflows: verified time + drift, uuid, diff, calc, attest, verify.

Used & imported cars in Portugal: search stock, ISV/IUC tax calc, resale value, contact.

India's financial MCP — cards, loans, FDs, insurance, MFs; EMI/SIP/tax calcs; NAV lookup; RAG.

Verified pricing for 21 answering services & AI receptionists, dated weekly. Missed-call ROI calc.

Unix/ISO timestamp conversion, timezone math, duration calc