opentax
io.github.Invaro/opentax
Verifiable US tax oracle for AI agents: cited, machine-checkable federal and state tax computation
Description as published in the official MCP registry.
Answers the MCP handshake and lists its tools. Checked 2026-10-04.
What we measured
| Endpoint | https://opentax.invaro.ai/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake and lists its tools (1,392 ms) | our check, 2026-10-04 |
| Protocol version | 2025-11-25 | our check, 2026-10-04 |
| Tools (15) | calculate_tax, calculate_business_tax, calculate_fiduciary_tax, determine_dependent, compute_state_return, compute_return, verify_tax_claim, list_input_facts, explain_rule, find_tax_cliffs, compare_filing_statuses, lookup_tax_parameter, search_tax_rules, verify_fact, is_tipped_occupation | tools/list, 2026-10-04 |
| Registry version | 0.2.1 · active · updated 2026-07-23 | registry |
| Package | npm: @invaro/opentax | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows a real call went through, not just an opinion. How to file one.
Connect
claude mcp add --transport http opentax https://opentax.invaro.ai/mcpnpx -y @invaro/opentaxCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name io.github.Invaro/opentax.