AgentIndex icon
AgentIndex
mcpsnoop logo
mcpsnoop
★ 362
vs
ZizkaDB logo
ZizkaDB
★ 144

mcpsnoop vs ZizkaDB

mcpsnoop: mcpsnoop is a transparent proxy designed for the Model Context Protocol (MCP), acting like Wireshark for AI client-server interactions. It allows developers to live-debug actual MCP traffic in a terminal UI, addressing limitations of existing tools by observing real client-server communications.; ZizkaDB: ZizkaDB is a self-hosted audit trail for AI agents, designed to help you understand why an agent misbehaves. It provides a causal graph to trace back from any agent step to its root cause, making debugging and analysis straightforward.

01

TL;DR

mcpsnoop logo
mcpsnoopObservability · ★ 362

Debugging AI client-server communication to identify unseen or unexpected tool calls.

Read mcpsnoop full review →
ZizkaDB logo
ZizkaDBObservability · ★ 144

Debugging Misbehaving AI Agents

Read ZizkaDB full review →
02

Side-by-Side Comparison

Field
mcpsnoop logomcpsnoop
ZizkaDB logoZizkaDB
Category
Observability
Observability
Stars
★ 362
★ 144
License
MIT
NOASSERTION
Install Command
go install github.com/kerlenton/mcpsnoop/cmd/mcpsnoop@latest
curl -fsSL https://raw.githubusercontent.com/Zizka-ai/ZizkaDB/main/scripts/quickstart-remote.sh | bash
Updated
6d ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
AI Development, Debugging Tool, Network Proxy
AI Agent Debugging, Audit Trail, Causal Tracing
03

Features

mcpsnoop logomcpsnoop
01Live JSON-RPC stream with color-coding, error flagging, and slow call detection.
02Replay any captured tool call against an isolated server instance.
03Capability inspector to view client and server agreed capabilities during handshake.
04Hung-call detection for in-flight requests with live timers.
05Powerful filter query to narrow the stream by tool, status, direction, kind, or text.
ZizkaDB logoZizkaDB
01Causal Tracing with `db.why()`
02Interactive Dashboard for Causal Chains
03Agent Behavior Drift Detection
04Time-Travel and Context Reconstruction
04

Use Cases

mcpsnoop logomcpsnoop
↳Debugging AI client-server communication to identify unseen or unexpected tool calls.
↳Rapid iteration on tool development by replaying captured calls against fresh server instances.
↳Identifying hung or failed tool calls and understanding capability discrepancies.
↳Observing the exact MCP traffic between your AI client and server in real-time.
ZizkaDB logoZizkaDB
↳Debugging Misbehaving AI Agents
↳Understanding Agent Decision-Making
↳Auditing Agent Interactions and History
↳Detecting Agent Behavior Drift
FAQ

FAQ

What is the difference between mcpsnoop and ZizkaDB?
Both mcpsnoop and ZizkaDB are in the Observability category. mcpsnoop has 362 stars, while ZizkaDB has 144 stars.
Which is better, mcpsnoop or ZizkaDB?
The best choice depends on your use case. Choose mcpsnoop if Debugging AI client-server communication to identify unseen or unexpected tool calls., and ZizkaDB if Debugging Misbehaving AI Agents.
Is mcpsnoop free or open source?
Yes, mcpsnoop is open source on GitHub (MIT).
Is ZizkaDB free or open source?
Yes, ZizkaDB is open source on GitHub (NOASSERTION).
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Related

Alternatives to mcpsnoop →Alternatives to ZizkaDB →mcpsnoop details →ZizkaDB details →