Search persistent memory using semantic + emotional relevance ranking. Returns memories sorted by relevance, recency, and emotional resonance. Searches current project + global memories by default. Use to retrieve previously stored facts, decisions, preferences, or context. Behavior: performs hyb...
AI agents call recall to retrieve information from Celiums Memory without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The recall tool is purely informational—it queries and retrieves data from memory storage without creating, modifying, deleting, or executing external operations. The hybrid search mechanism (vector similarity, full-text, emotional resonance) and ranking are read-only retrieval operations. No side effects or state changes are mentioned.
From the tool's definition Tool performs search and retrieval operations: 'Search persistent memory', 'Returns memories sorted by relevance', 'Use to retrieve previously stored facts, decisions, preferences, or context', 'performs hybrid retrieval', 'returns ranked results'.
Documented attack patterns abuse exactly the kind of access recall gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Celiums Memory, and nothing reaches the server without passing your rules. This is the rule we recommend for recall:
{
"version": "1",
"default": "deny",
"tools": {
"recall": {}
}
}recall is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Search persistent memory using semantic + emotional relevance ranking. Returns memories sorted by relevance, recency, and emotional resonance. Searches current project + global memories by default. Use to retrieve previously stored facts, decisions, preferences, or context. Behavior: performs hybrid retrieval (vector similarity + full-text + emotional resonance), applies spaced activation recall (SAR) filtering, returns ranked results with content, type, importance, and relevance score. It is categorised as a Read tool in the Celiums Memory MCP Server, which means it retrieves data without modifying state.
Register the Celiums Memory MCP server in PolicyLayer and add a rule for recall: 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 Celiums Memory. Nothing to install.
recall 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 recall 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 recall. 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.
recall is provided by the Celiums Memory MCP server (terrizoaguimor/celiums-memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Celiums Memory, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
62 Celiums Memory tools catalogued and risk-classified — across an index of 43,000+ MCP servers.