Perform hybird search combining relational condition filtering(that is, scalar) and vector search. Args: table_name: Name of the table to search. vector_data: Query vector. vec_column_name: column name containing vectors to search. distance_func: The index distance algorithm used when comparing t...
AI agents call oceanbase_hybrid_search to retrieve information from Mcp Oceanbase without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries data from a database using hybrid search (vector + relational filtering). It has no side effects—it does not create, modify, delete, or execute arbitrary code. The parameters (search conditions, topk limits, output columns) indicate data retrieval only. This is a classic Read operation.
From the tool's definition Tool description states 'Perform hybrid search combining relational condition filtering and vector search' with parameters for querying (table_name, vector_data, vec_column_name, topk, output_column_name).
Documented attack patterns abuse exactly the kind of access oceanbase_hybrid_search gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Oceanbase, and nothing reaches the server without passing your rules. This is the rule we recommend for oceanbase_hybrid_search:
{
"version": "1",
"default": "deny",
"tools": {
"oceanbase_hybrid_search": {}
}
}oceanbase_hybrid_search is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Perform hybird search combining relational condition filtering(that is, scalar) and vector search. Args: table_name: Name of the table to search. vector_data: Query vector. vec_column_name: column name containing vectors to search. distance_func: The index distance algorithm used when comparing the distance between two vectors. with_distance: Whether to output distance data. filter_expr: Scalar conditions requiring filtering in where clause. topk: Number of results returned. output_column_name: Returned table fields,unless explicitly requested, please do not provide. It is categorised as a Read tool in the Mcp Oceanbase MCP Server, which means it retrieves data without modifying state.
Register the Mcp Oceanbase MCP server in PolicyLayer and add a rule for oceanbase_hybrid_search: 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 Mcp Oceanbase. Nothing to install.
oceanbase_hybrid_search 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 oceanbase_hybrid_search 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 oceanbase_hybrid_search. 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.
oceanbase_hybrid_search is provided by the Mcp Oceanbase MCP server (oceanbase/awesome-oceanbase-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 134 Mcp Oceanbase tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
134 Mcp Oceanbase tools catalogued and risk-classified — across an index of 42,500+ MCP servers.