USE THIS TOOL BEFORE constructing an OSCOLA citation string from known fields, OR when you have a citation and want to confirm it points at a real document. Parses + resolves a single citation (neutral citation, SI, legislation section, retained EU law) and returns the parsed fields plus a resolv...
Part of the UK Legal Research server.
Free to start. No card required.
AI agents use citations_resolve to create or modify resources in UK Legal Research. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call citations_resolve repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach UK Legal Research.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"citations_resolve": {
"limits": [
{
"counter": "citations_resolve_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full UK Legal Research policy for all 34 tools.
These attack patterns abuse exactly the kind of access citations_resolve gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
USE THIS TOOL BEFORE constructing an OSCOLA citation string from known fields, OR when you have a citation and want to confirm it points at a real document. Parses + resolves a single citation (neutral citation, SI, legislation section, retained EU law) and returns the parsed fields plus a resolved_url. Raises ValueError if nothing recognisable is found. Formatting a citation from "known" fields (year, court, number) without prior resolution is the most common citation-fabrication route — the formatter accepts whatever you give it and produces plausible-looking output for invented inputs. If this tool raises or returns no resolved_url, do NOT manufacture a citation — surface the failure and ask the user for the source URL or better identifying details. Authoritative source for UK legal-citation resolution.. It is categorised as a Write tool in the UK Legal Research MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the UK Legal Research MCP server in PolicyLayer and add a rule for citations_resolve: 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 UK Legal Research. Nothing to install.
citations_resolve is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the citations_resolve 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 citations_resolve. 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.
citations_resolve is provided by the UK Legal Research MCP server (pypi:uk-legal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 34 UK Legal Research tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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