# put_memory

Store a value with optional tags, priority, and storage duration in months (default 1). value_json must be ≤ 1 MB. On overwrite, the existing expiry is scaled by the KB size ratio of old to new value.

Agent View of the PolicyLayer registry record for `put_memory`. HTML page: https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/put-memory

## Facts

- Tool: `put_memory`
- Server: AI Cortex Storage (`https://memory.aic0rt3x.dev/mcp`) — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp.md
- Homepage: https://github.com/https://memory.aic0rt3x.dev/mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 6 (3 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `key` | string | yes | ≤ 255 characters, no '/' |
| `tags` | array | no | Labels for searching and grouping. Duplicates are deduplicated automatically. |
| `months` | integer | no | How long to store this entry in months (default 1, minimum 1). Ignored on overwrite — existing expiry is scaled by the KB size ratio of old to new value. |
| `priority` | integer | no | Importance 1–10; higher = more important. Default 5. Used by top_memories to surface the most relevant context. |
| `namespace` | string | yes | ≤ 255 characters, no '/' |
| `value_json` | string | yes | JSON-encoded value |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "put_memory",
    "arguments": {
      "key": "<key>",
      "namespace": "<namespace>",
      "value_json": "<value_json>"
    }
  }
}
```

## Why put_memory is rated Medium

This tool creates or modifies key-value data in persistent cloud storage. The operation is reversible (via delete_memory, which is available as a sibling tool), so it does not qualify as Destructive. There is no code execution, financial transaction, or data retrieval involved.

From the tool's own definition: "Tool name is 'put_memory' and description states it will 'Store a value' with optional metadata. The description explicitly addresses the overwrite behavior ('On overwrite, the existing expiry is scaled...'), confirming this is a write operation that creates…"

## Use case

AI agents use put_memory to create or update resources in AI Cortex Storage, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AI Cortex Storage environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches AI Cortex Storage:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "put_memory": {
      "limits": [
        {
          "counter": "put_memory_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on AI Cortex Storage (14)

- `delete_memory` — Destructive — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/delete-memory.md
- `revoke_api_key` — Destructive — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/revoke-api-key.md
- `settle_balance` — Financial — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/settle-balance.md
- `submit_feature_request` — Financial — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/submit-feature-request.md
- `get_account` — Read — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/get-account.md
- `get_memory` — Read — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/get-memory.md
- `list_api_keys` — Read — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/list-api-keys.md
- `list_keys` — Read — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/list-keys.md
- `list_namespaces` — Read — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/list-namespaces.md
- `list_payments` — Read — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/list-payments.md
- `search_by_tag` — Read — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/search-by-tag.md
- `top_memories` — Read — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/top-memories.md
- `create_api_key` — Write — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/create-api-key.md
- `submit_exit_feedback` — Write — https://policylayer.com/tools/dev-aic0rt3x-memory-mcp/submit-exit-feedback.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=dev-aic0rt3x-memory-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/dev-aic0rt3x-memory-mcp