DataNexus MCP

AI-Ready access to US/UK nonprofit data and OSS vulnerability intelligence via the Model Context Protocol.

10 tools. No API key required. Token-efficient AI-Ready Markdown.

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Connect (remote — no install)

Add to Claude Desktop or any MCP-compatible client:

{
  "mcpServers": {
    "datanexus": {
      "type": "http",
      "url": "https://datanexusmcp.com/mcp"
    }
  }
}

Or via npx (bridges HTTP → stdio for clients that need it):

npx -y @datanexusmcp/mcp-server

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Tools (10 total)

T04 — US/UK Nonprofit Data

Tool	Description	Source
fetch_nonprofit_by_ein	IRS 990 data for any US nonprofit by EIN — name, address, NTEE code, revenue, assets	IRS EO BMF + IRS TEOS
search_nonprofits_by_name	Search US nonprofits by name with optional state filter — returns up to 25 results	IRS EO BMF
fetch_charity_uk	UK registered charity details — registration status, income, expenditure, activities	UK Charity Commission (OGL v3)

T10 — OSS Vulnerability Intelligence

Tool	Description	Source
fetch_package_vulnerabilities	All known CVEs for a package version with CVSS scores and fixed versions	Google OSV.dev + NIST NVD
fetch_dependency_graph	Full transitive dependency tree — hard 8 s timeout, never hangs silently	deps.dev (Google)
fetch_cve_detail	Full CVE detail by ID — description, CVSS base score, affected products, patch URLs	NIST NVD
audit_sbom_vulnerabilities	Audit a CycloneDX or SPDX SBOM — per-component vulnerability count and severity	OSV.dev batch API
fetch_package_licence	SPDX licence identifier for any package version — use before adding a commercial dep	deps.dev (Google)

Shared Infrastructure

Tool	Description
report_feedback	Report an incorrect, incomplete, or stale tool result — always returns {status: 'recorded'}
report_mcpize_link	Check subscription status and retrieve upgrade URL if required

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Ecosystems supported (T10)

PyPI · npm · Maven · Go · Cargo · NuGet · RubyGems · Packagist

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Response format

Every tool response includes:

Field	Description
markdown_output	AI-Ready Markdown — paste directly into a response
query_hash	16-char hex — use as query_hash in report_feedback
data_as_of	ISO 8601 UTC timestamp of the data
ingest_healthy	true if upstream source was reachable
cache_hit	true if served from cache
sha256_hash	SHA-256 of the raw upstream payload

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Environment variables

Only needed for self-hosted deployments. The hosted server at https://datanexusmcp.com/mcp requires no configuration.

Variable	Default	Description
DATANEXUS_REDIS_URL	redis://localhost:6379	Redis for caching and feedback

No API keys are required for T04 or T10 — all upstream sources are public.

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License

MIT