501c3.HELP nonprofit compliance
Nonprofit compliance rules for all 50 US states, each with its official citation and status
| Endpoint | https://mcp.501c3.help (streamable-http) |
|---|---|
| Registry version | 0.1.1 |
| Now | 3 tools · grade A (95) · pin ts_237d1410dd330c89e5fea4ce1b375a34 · protocol 2025-06-18 |
| First / last listed | 2026-10-28 03:18 UTC / 2026-10-28 03:18 UTC |
| Grade over time | 2026-10-28: A (95), 3 tools |
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Tools: get_state_requirements compare_states get_filing_deadlines
get_state_requirements | Nonprofit compliance requirements for one US state, from 501c3.help's sourced records: formation, governance, charitable solicitation registration, reporting, tax and employment. Every record carries its official citation and a verification status. Records marked review_required are unsettled and must be presented as such, never as a settled rule. Optionally narrow by topic. Returns a limited numb params: state*, topic |
compare_states | The same compliance topic across several US states, for deciding where to incorporate or for an organization that operates in more than one state. Each state's records carry their own citation and verification status; a record marked review_required is unsettled and must not be presented as a settled rule. Accepts up to eight states. params: states*, topic* |
get_filing_deadlines | Every requirement in one US state that has a filing deadline attached, with the deadline in plain words, the form or portal, the fee, and the official citation. Use this for 'what is due and when'. Deadlines on records marked review_required are not settled and must be shown as unconfirmed. params: state* |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.