Retrieve full results of a completed GRAIN analysis: theme scores, per-ticker breakdown, and evidence passages. Use list_grain_analyses first to find the analysis_id.
AI agents call get_grain_analysis to retrieve information from Sablier MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves pre-computed analysis results (theme scores, per-ticker breakdown, evidence passages) from a completed GRAIN analysis. The verb 'Retrieve' and the structure (requiring an analysis_id from a prior list operation) indicate a read-only query operation with no side effects. There is no data modification, code execution, deletion, or financial transaction involved.
From the tool's definition Tool description uses 'Retrieve' and 'completed GRAIN analysis' results — passive data retrieval with no modification or execution.
Attacks that exploit this kind of access
Retrieve full results of a completed GRAIN analysis: theme scores, per-ticker breakdown, and evidence passages. Use list_grain_analyses first to find the analysis_id. It is categorised as a Read tool in the Sablier MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Sablier MCP Server MCP server in PolicyLayer and add a rule for get_grain_analysis: 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 Sablier MCP Server. Nothing to install.
get_grain_analysis 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 get_grain_analysis 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 get_grain_analysis. 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.
get_grain_analysis is provided by the Sablier MCP Server MCP server (sablier-ai/sablier-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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