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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

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

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

[mcp_servers.compliance]
url = "https://mcp.501c3.help/"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "compliance": {
      "type": "remote",
      "url": "https://mcp.501c3.help/",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "compliance": {
      "type": "http",
      "url": "https://mcp.501c3.help/"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=compliance&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLjUwMWMzLmhlbHAvIn0%3D"
}

{
  "servers": {
    "compliance": {
      "type": "http",
      "url": "https://mcp.501c3.help/"
    }
  }
}

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

extensions:
  "compliance":
    enabled: true
    name: "compliance"
    type: streamable_http
    uri: "https://mcp.501c3.help/"
    timeout: 300

Quality 79 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_filing_deadlines (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_state_requirements (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); compare_states (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 467 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 467 tokens to load them all · tool set f591666ae589 · checked 2026-10-20 02:33 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 82 / 100

no-repository

provenance55

liveness99

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-97% +updated-18d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mcp.501c3.help/` streamable-http	none	yes	97%	551 ms	2025-06-18	2026-10-20

Tools (3)

`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.
`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.
`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.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "help.501c3/compliance",
  "title": "501c3.HELP nonprofit compliance",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.501c3.help/",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.1",
  "websiteUrl": "https://501c3.help/license/",
  "description": "Nonprofit compliance rules for all 50 US states, each with its official citation and status"
}