# get_concept

Look up a concept by its exact ID. Returns the concept with its full context including children, edges, incoming edges, and parent. Unlike

Agent View of the PolicyLayer registry record for `get_concept`. HTML page: https://policylayer.com/tools/0xk3vin-megamemory/get-concept

## Facts

- Tool: `get_concept`
- Server: MegaMemory (`0xk3vin/megamemory`) — https://policylayer.com/tools/0xk3vin-megamemory.md
- Homepage: https://github.com/0xK3vin/MegaMemory
- Risk category: Read (Low risk)
- Registry record: grade D, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_concept",
    "arguments": {}
  }
}
```

## Why get_concept is rated Low

This tool retrieves and queries data from a knowledge graph without modifying, deleting, or executing code. It is a straightforward read operation that returns concept information. The only potential concern is that retrieved knowledge graph data could theoretically be sensitive, but the tool itself performs no mutations and has minimal blast radius if misused by an agent.

From the tool's own definition: "Tool name 'get_concept' and description 'Look up a concept by its exact ID. Returns the concept with its full context' indicates a retrieval operation with no side effects."

## Use case

AI agents call get_concept to retrieve information from MegaMemory without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches MegaMemory:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_concept": {}
  }
}
```

## Other tools on MegaMemory (8)

- `remove_concept` — Destructive — https://policylayer.com/tools/0xk3vin-megamemory/remove-concept.md
- `list_conflicts` — Read — https://policylayer.com/tools/0xk3vin-megamemory/list-conflicts.md
- `list_roots` — Read — https://policylayer.com/tools/0xk3vin-megamemory/list-roots.md
- `understand` — Read — https://policylayer.com/tools/0xk3vin-megamemory/understand.md
- `create_concept` — Write — https://policylayer.com/tools/0xk3vin-megamemory/create-concept.md
- `link` — Write — https://policylayer.com/tools/0xk3vin-megamemory/link.md
- `resolve_conflict` — Write — https://policylayer.com/tools/0xk3vin-megamemory/resolve-conflict.md
- `update_concept` — Write — https://policylayer.com/tools/0xk3vin-megamemory/update-concept.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=0xk3vin-megamemory · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xk3vin-megamemory