501c3.HELP nonprofit compliance

help.501c3/complianceVersion 0.1.1

Nonprofit compliance rules for all 50 US states, each with its official citation and status

Status

Responds128 msNov 14, 2026, 14:32 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:32 UTC
Latency: 128 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://mcp.501c3.help/Responds128 msNov 14, 2026, 14:32 UTC

No sign-in

Claude Code

claude mcp add --transport http compliance https://mcp.501c3.help/

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: compliance
Remote MCP server URL: https://mcp.501c3.help/

Cursor

{
  "mcpServers": {
    "compliance": {
      "url": "https://mcp.501c3.help/"
    }
  }
}

VS Code

code --add-mcp '{"name":"compliance","type":"http","url":"https://mcp.501c3.help/"}'

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Tools

3 tools

Tools of 501c3.HELP nonprofit compliance
	Description		Read-only	Idempotent	Open world
`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.	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.	Not declared	Not declared	Not declared	Not declared
`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.	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.	Not declared	Not declared	Not declared	Not declared
`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 number of records, not the whole state.	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 number of records, not the whole state.	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: Oct 1, 2026
Updated: Oct 1, 2026
Website: https://501c3.help/license/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): SecuritySuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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