# get_error_patterns

A read tool on the CogniRepo MCP server.

Agent View of the PolicyLayer registry record for `get_error_patterns`. HTML page: https://policylayer.com/tools/ashlesh-t-cognirepo/get-error-patterns

## Facts

- Tool: `get_error_patterns`
- Server: CogniRepo (`pypi:cognirepo`) — https://policylayer.com/tools/ashlesh-t-cognirepo.md
- Install: `npx -y pypi:cognirepo`
- Homepage: https://github.com/ashlesh-t/cognirepo
- Risk category: Read (Low risk)
- Registry record: grade A, 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_error_patterns",
    "arguments": {}
  }
}
```

## Why get_error_patterns is rated Low

The tool appears to query or retrieve error pattern information from the server's persistent memory system without modifying, executing operations, or causing destructive effects.

From the tool's own definition: "Tool name 'get_error_patterns' suggests retrieval of existing error data. The naming convention ('get_*') is consistent with other Read-category tools on this server (get_agent_bootstrap, get_last_context, get_session_brief)."

## Use case

AI agents call get_error_patterns to retrieve information from CogniRepo 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 CogniRepo:

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

## Other tools on CogniRepo (33)

- `supersede_learning` — Other — https://policylayer.com/tools/ashlesh-t-cognirepo/supersede-learning.md
- `architecture_overview` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/architecture-overview.md
- `context_pack` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/context-pack.md
- `cross_repo_search` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/cross-repo-search.md
- `cross_repo_traverse` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/cross-repo-traverse.md
- `dependency_graph` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/dependency-graph.md
- `episodic_search` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/episodic-search.md
- `explain_change` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/explain-change.md
- `find_symbol_path` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/find-symbol-path.md
- `get_agent_bootstrap` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/get-agent-bootstrap.md
- `get_last_context` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/get-last-context.md
- `get_service_endpoints` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/get-service-endpoints.md
- `get_session_brief` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/get-session-brief.md
- `get_session_history` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/get-session-history.md
- `get_user_profile` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/get-user-profile.md
- `graph_stats` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/graph-stats.md
- `list_org_context` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/list-org-context.md
- `lookup_symbol` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/lookup-symbol.md
- `org_dependencies` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/org-dependencies.md
- `org_search` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/org-search.md
- `org_wide_search` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/org-wide-search.md
- `retrieve_memory` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/retrieve-memory.md
- `search_docs` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/search-docs.md
- `search_token` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/search-token.md
- `semantic_search_code` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/semantic-search-code.md
- `subgraph` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/subgraph.md
- `who_calls` — Read — https://policylayer.com/tools/ashlesh-t-cognirepo/who-calls.md
- `link_repos` — Write — https://policylayer.com/tools/ashlesh-t-cognirepo/link-repos.md
- `log_episode` — Write — https://policylayer.com/tools/ashlesh-t-cognirepo/log-episode.md
- `record_decision` — Write — https://policylayer.com/tools/ashlesh-t-cognirepo/record-decision.md
- …and 3 more: https://policylayer.com/tools/ashlesh-t-cognirepo.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=ashlesh-t-cognirepo · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/ashlesh-t-cognirepo