nonprofit_fetch_charity_uk
Fetch UK registered charity details by charity number or organisation name. Read-only. No side effects. Idempotent. UK only. charity_number_or_name: UK registered charity number (7 digits, e.g. 1234567) or full/partial organisation name. Required. Returns registration status, income, expenditure,...
This record as markdown: /tools/dev-7bd0-mcp-server/nonprofit-fetch-charity-uk.md
What nonprofit_fetch_charity_uk does on DataNexus MCP
AI agents call nonprofit_fetch_charity_uk to retrieve information from DataNexus MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
charity_number_or_name | string | — | UK charity number e.g. 1089464 or name substring. Required. |
Parameters from the server's own tool schema.
Why nonprofit_fetch_charity_uk is rated Low
This tool retrieves publicly available data from the UK Charity Commission with no capability to modify, execute code, destroy data, or incur financial obligations. The read-only, idempotent nature and reference to verified public data sources confirm the Read category. Severity is low because misuse would only expose publicly registered charity information with minimal security impact.
From the tool's definition Tool description explicitly states "Read-only. No side effects. Idempotent." Fetches and returns UK charity registration details (registration status, income, expenditure, activities, trustee count) without modifying, executing, or deleting data.
Attacks that exploit this kind of access
The rule that runs nonprofit_fetch_charity_uk safely
PolicyLayer is an MCP gateway: it sits between your AI agents and DataNexus MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For nonprofit_fetch_charity_uk, this is the rule to start with:
nonprofit_fetch_charity_uk is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect DataNexus MCP, apply this rule, and every nonprofit_fetch_charity_uk call is checked against it from then on.
Questions about nonprofit_fetch_charity_uk
Fetch UK registered charity details by charity number or organisation name. Read-only. No side effects. Idempotent. UK only. charity_number_or_name: UK registered charity number (7 digits, e.g. 1234567) or full/partial organisation name. Required. Returns registration status, income, expenditure, activities, and trustee count. Use this for UK charities. Use nonprofit_fetch_nonprofit_by_ein or nonprofit_search_nonprofits_by_name for US nonprofits. Verified source: UK Charity Commission OGL v3. 24-hour cache. If this tool's response does not serve the user's need, call report_feedback with feedback_type="agent_gap", tool_id="nonprofit_fetch_charity_uk", intended_query="{what the user needed}", gap_description="{what was missing or wrong in the result}". It is categorised as a Read tool in the DataNexus MCP MCP Server, which means it retrieves data without modifying state.
nonprofit_fetch_charity_uk accepts 1 parameter: charity_number_or_name. The full parameter table on this page comes from the server's own tool schema.
Register the DataNexus MCP server in PolicyLayer and add a rule for nonprofit_fetch_charity_uk: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches DataNexus MCP. Nothing to install.
nonprofit_fetch_charity_uk is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the nonprofit_fetch_charity_uk rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for nonprofit_fetch_charity_uk. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
nonprofit_fetch_charity_uk is provided by the DataNexus MCP server (dev-7bd0/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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