FreeToolHub for ChatGPT
io.github.cavan1977/freetoolhub
44 calculators for AI agents: US tax, finance, business + an MCP engineering & security suite.
client:ChatGPT
transport:streamable-http
tools:44
Install FreeToolHub in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://freetoolhub.org/api/mcpCustom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs
What ChatGPT can do once it is connected
- calculate_se_tax
- calculate_freelancer_tax
- calculate_1099k_tax
- calculate_capital_gains_tax
- compare_w2_vs_1099
- get_sales_tax_rate
- calculate_payroll_tax
- calculate_estate_tax
- calculate_hsa_fsa_savings
- calculate_quarterly_tax
- check_economic_nexus
- calculate_tariff
- calculate_compound_interest
- calculate_mortgage
- compare_401k_vs_roth
- calculate_car_loan
- calculate_rental_roi
- calculate_student_loan
- calculate_roi
- calculate_life_insurance
- calculate_rental_affordability
- calculate_home_equity
- calculate_break_even
- compare_llc_cost