# ThumbGate

> Use this tool when you need to capture and validate feedback from AI coding agents, prevent repeated failures, and enforce prevention rules. ThumbGate solves problems of inefficient coding and repeated mistakes by auto-promoting failures into hard constraints, taking inputs from AI agents and outputs from a rubric engine. It is ideal for use with various coding tools, including Claude Code, Codex, and Gemini, to optimize coding workflows and improve overall performance.

Canonical page: https://skillsregistry.net/skills/rlhf-loop-mcp-memory-gateway-v2  
JSON: https://api.skillsregistry.net/v1/skills/rlhf-loop-mcp-memory-gateway-v2

## Description

MCP Memory Gateway captures explicit structured feedback from AI coding agents, validates it against a rubric engine, and auto-promotes repeated failures into prevention rules enforced via PreToolUse hooks. Pre-action gates physically block tool calls matching known failure patterns before execution — turning past mistakes into hard constraints rather than suggestions. Supports semantic recall via LanceDB vectors, DPO/KTO export for downstream fine-tuning, and a file watcher bridge for external signal ingestion. Compatible with Claude Code, Codex, Gemini, Amp, Cursor, and OpenCode. Install with `npx mcp-memory-gateway init` or `claude mcp add rlhf -- npx -y mcp-memory-gateway serve`. MIT licensed, open source.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-05-10

## Source

- **Source listing:** [Smithery](https://smithery.ai/server/rlhf-loop/mcp-memory-gateway-v2)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "rlhf-loop-mcp-memory-gateway-v2"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/rlhf-loop-mcp-memory-gateway-v2` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/rlhf-loop-mcp-memory-gateway-v2/pull`

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