AgentIndex icon
AgentIndex
ThumbGate logo
ThumbGate
★ 29
vs
agent-shadow-brain logo
agent-shadow-brain
★ 38

ThumbGate vs agent-shadow-brain

ThumbGate: ThumbGate is a safety net for vibe coding. It captures thumbs-down feedback, auto-generates prevention rules, and pre-action gates physically block the agent before it repeats a known mistake. It works with Claude Code, Cursor, Codex, Gemini, Amp, OpenCode, and any MCP-compatible agent, providing a reliability layer without an extra orchestrator.; agent-shadow-brain: Shadow Brain is the first open-source shared memory and context system for AI coding agents. It allows multiple agents and sub-agents to share a common brain, with features like causal memory chains, dream engine, reputation ledger, and more. It works with 10+ agents and is free and local-first.

01

TL;DR

ThumbGate logo
ThumbGateSecurity & Safety · ★ 29

Preventing dangerous git commands like force-push to protected branches

Read ThumbGate full review →
agent-shadow-brain logo
agent-shadow-brainCode Assistant · ★ 38

Eliminate cold starts: every new agent session gets a 2K-token briefing from past knowledge

Read agent-shadow-brain full review →
02

Side-by-Side Comparison

Field
ThumbGate logoThumbGate
agent-shadow-brain logoagent-shadow-brain
Category
Security & Safety
Code Assistant
Stars
★ 29
★ 38
License
MIT
MIT
Install Command
npx thumbgate init
npx @theihtisham/agent-shadow-brain@latest attach-all
Updated
1d ago
4mo ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
agent-reliability, ai-agents, ai-safety
ai, causal-chains, claude-code
03

Features

ThumbGate logoThumbGate
01Auto-generates prevention rules from thumbs-down feedback
02Pre-action gates block tool calls that match known failure patterns
03Memory and lesson search across sessions via SQLite + FTS5
04Works with multiple agents (Claude Code, Cursor, Codex, Gemini, Amp, OpenCode)
05Self-healing reflector runs post-mortem on negative feedback
agent-shadow-brain logoagent-shadow-brain
01Sub-Agent Brain Bridge (SABB) – sync brain context into sub-agents
02Causal Memory Chains – traceable decision DAG with Graphviz export
03Dream Engine – idle-time reflection with counterfactual analysis
04Swarm Debate Protocol – pro/con/arbiter sub-agents for critical decisions
05Agent Reputation Ledger – Ed25519-signed receipts and accuracy scores
04

Use Cases

ThumbGate logoThumbGate
↳Preventing dangerous git commands like force-push to protected branches
↳Team collaboration with shared lesson database and org dashboard
↳CI/CD auto-feedback capture for background agent governance
agent-shadow-brain logoagent-shadow-brain
↳Eliminate cold starts: every new agent session gets a 2K-token briefing from past knowledge
↳Cross-agent context sharing: what one agent learns, all agents inherit
↳Traceability and trust: every AI decision is signed and causally linked
FAQ

FAQ

What is the difference between ThumbGate and agent-shadow-brain?
Both ThumbGate and agent-shadow-brain are in the Security & Safety category. ThumbGate has 29 stars, while agent-shadow-brain has 38 stars.
Which is better, ThumbGate or agent-shadow-brain?
The best choice depends on your use case. Choose ThumbGate if Preventing dangerous git commands like force-push to protected branches, and agent-shadow-brain if Eliminate cold starts: every new agent session gets a 2K-token briefing from past knowledge.
Is ThumbGate free or open source?
Yes, ThumbGate is open source on GitHub (MIT).
Is agent-shadow-brain free or open source?
Yes, agent-shadow-brain is open source on GitHub (MIT).
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Related

Alternatives to ThumbGate →Alternatives to agent-shadow-brain →ThumbGate details →agent-shadow-brain details →