# retrieveKnowledge

Retrieve relevant knowledge chunks from the vector database based on semantic similarity

Agent View of the PolicyLayer registry record for `retrieveKnowledge`. HTML page: https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/retrieveknowledge

## Facts

- Tool: `retrieveKnowledge`
- Server: Claude MCP Server Ecosystem (`coder-rl/claude_mcpserver_dev1`) — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1.md
- Homepage: https://github.com/Coder-RL/Claude_MCPServer_Dev1
- Risk category: Read (Low risk)
- Registry record: grade F, 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": "retrieveKnowledge",
    "arguments": {}
  }
}
```

## Why retrieveKnowledge is rated Low

This tool performs a semantic search/query against a vector database to fetch matching knowledge chunks. No data is created, modified, deleted, or executed. The operation has no side effects and no blast radius if misused by an AI agent—it can only return data already present in the knowledge base. This is a classic Read category tool.

From the tool's own definition: "Tool description states 'Retrieve relevant knowledge chunks from the vector database based on semantic similarity' — the verb 'retrieve' and action of querying a database with no modification capability indicate a read-only operation."

## Use case

AI agents call retrieveKnowledge to retrieve information from Claude MCP Server Ecosystem 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 Claude MCP Server Ecosystem:

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

## Other tools on Claude MCP Server Ecosystem (228)

- `delete_enhanced_memory` — Destructive — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/delete-enhanced-memory.md
- `delete_memory` — Destructive — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/delete-memory.md
- `revoke_session` — Destructive — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/revoke-session.md
- `undeploy_model` — Destructive — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/undeploy-model.md
- `adaptive_cross_attention` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/adaptive-cross-attention.md
- `adaptive_sparsity_tuning` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/adaptive-sparsity-tuning.md
- `authenticate` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/authenticate.md
- `benchmark_encoding_performance` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/benchmark-encoding-performance.md
- `build_documentation_project` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/build-documentation-project.md
- `compute_cross_attention` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/compute-cross-attention.md
- `create_neural_network` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/create-neural-network.md
- `create_security_scan` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/create-security-scan.md
- `deploy_model` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/deploy-model.md
- `deploy_plan` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/deploy-plan.md
- `derive_key` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/derive-key.md
- `execute_control_test` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/execute-control-test.md
- `execute_orchestration` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/execute-orchestration.md
- `execute_pipeline` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/execute-pipeline.md
- `execute_security_scan` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/execute-security-scan.md
- `execute_sparse_attention` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/execute-sparse-attention.md
- `execute_transformer_block` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/execute-transformer-block.md
- `execute_warehouse_query` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/execute-warehouse-query.md
- `generate_attention_pattern` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/generate-attention-pattern.md
- `generate_position_encodings` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/generate-position-encodings.md
- `hyperparameter_search` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/hyperparameter-search.md
- `initialize_cross_attention_session` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/initialize-cross-attention-session.md
- `optimize_architecture` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/optimize-architecture.md
- `optimize_attention_chunks` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/optimize-attention-chunks.md
- `optimize_cross_attention_fusion` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/optimize-cross-attention-fusion.md
- `optimize_gradient` — Execute — https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1/optimize-gradient.md
- …and 198 more: https://policylayer.com/tools/coder-rl-claude-mcpserver-dev1.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=coder-rl-claude-mcpserver-dev1 · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/coder-rl-claude-mcpserver-dev1