Adds a manual relation between two notes.
AI agents use add_relation to create or update resources in A-MEM: Agentic Memory System — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your A-MEM: Agentic Memory System environment.
This tool creates new data (relations/links) in the memory graph. It is a Write operation because it modifies the graph state reversibly without executing code, deleting data, or causing financial impact. The blast radius is low since adding incorrect relations affects only the semantic structure and can be undone.
From the tool's definition Tool name 'add_relation' and description 'Adds a manual relation between two notes' indicate a create/modify operation that links existing notes in the graph structure. This is reversible (relations can be removed via 'remove_relation' sibling tool).
Documented attack patterns abuse exactly the kind of access add_relation gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and A-MEM: Agentic Memory System, and nothing reaches the server without passing your rules. This is the rule we recommend for add_relation:
{
"version": "1",
"default": "deny",
"tools": {
"add_relation": {
"limits": [
{
"counter": "add_relation_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_relation stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Adds a manual relation between two notes. It is categorised as a Write tool in the A-MEM: Agentic Memory System MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the A-MEM: Agentic Memory System MCP server in PolicyLayer and add a rule for add_relation: 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 A-MEM: Agentic Memory System. Nothing to install.
add_relation 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 add_relation 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 add_relation. 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.
add_relation is provided by the A-MEM: Agentic Memory System MCP server (tobs-code/a-mem-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from A-MEM: Agentic Memory System, 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.
15 A-MEM: Agentic Memory System tools catalogued and risk-classified — across an index of 43,000+ MCP servers.