LLM observability: tools for developers

Monitoring, traces, evaluation and quality tracking for LLM applications. An entry can appear under several use cases when its topics or description provide several explicit signals.

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117 entries in this view.

Tool ranking

Ranked by measured growth, normalized across sources. Raw values keep their source-specific window, shown under each tool; a change requires at least two snapshots from the last 7 days.

  1. 1

    MCP
    Active

    Governed local-LLM observability: model policy, prompt scanner, capture proxy, 21 tools.

    PythonLicense: MIT

      mcpmeasured growthOpen source ↗

      Install claude mcp add ai-guardian -- uvx ai-guardian-aiops

      0GitHub starsstable
    • 2

      Agent
      Active

      Local-first control plane for durable, governed agent teams: DAG orchestration, approvals, memory, signed skills, trace contracts, and realtime.

      PythonLicense: Apache-2.0
      • a2a-protocol
      • agentic-ai
      • ai-agents
      • fastapi
      • llmops

      githubmeasured growthOpen source ↗

      0GitHub starsstable
    • 3

      Agent
      Active

      A local A2A event and continuity service for agent applications, with structured history, provenance-safe transcripts, literal search, and natural-language queries.

      PythonLicense: BSD-2-Clause
      • a2a
      • agent-memory
      • ai-agents
      • event-sourcing
      • fastapi

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 4

      Agent
      Active

      Agent 降智检测与自愈公评网络 — an immune system for the AI agent society

      TypeScriptLicense: MIT
      • a2a
      • agent
      • agent-guard
      • ai-sre
      • drift-detection

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 5

      MCP
      Active

      A Model Context Protocol (MCP) server for Langfuse, enabling AI agents to query Langfuse trace data for enhanced debugging and observability

      PythonLicense: MIT
      • agent-skills
      • ai-agents
      • claude-code
      • codex
      • developer-tools

      githubmeasured growthOpen source ↗

      105GitHub starsstable
    • 6

      Agent
      Dormant

      The reliability and interoperability layer for AI agents. A2A-native. MCP-bridged.

      PythonLicense: Apache-2.0
      • a2a
      • agent-framework
      • agents
      • ai
      • ai-safety

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 7

      Agent
      Active

      A lightweight Python library that decouples agentic runtime from applications it builds

      PythonLicense: MIT
      • a2a
      • agent-runtime
      • agents
      • observability
      • portability

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 8

      Other
      Active

      Terminal-first validation harness for reviewing PRDs, RFCs, strategy docs, and experiment plans.

      TypeScript
      • ai-agents
      • claude-code
      • claude-code-skills
      • cli
      • evals

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 9

      Skill
      Dormant

      Don't make LLMs honest. Make every factual claim auditable. — An LLM Claim Auditing Layer with T1-T7 truth gradients. 98.1% business effectiveness on LiarBench v0.2.

      Python
      • agent-skills
      • ai-safety
      • anti-lie
      • audit
      • factuality

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/lc198707/anti-lie ~/.claude/skills/anti-lie

      89GitHub starsstable
    • 10

      Agent
      Active

      Deterministic crash tests for agent control planes: paired worlds, hard stops, budgets, scopes, approvals, and hash-linked receipts.

      TypeScriptLicense: Apache-2.0
      • a2a
      • agent-evaluation
      • ai-agents
      • benchmark
      • deterministic-replay

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 11

      Skill
      Active

      Glanceable Claude Code and Codex state in your terminal tabs: white=idle, blue=working, orange=waiting. Multi-terminal (iTerm2, WezTerm, AI Power Term), a live status bar with Anthropic usage limits, /sfl and /nil window save-and-restore,…

      ShellLicense: MIT
      • ai-workflow-observability
      • claude-code
      • claude-code-hooks
      • claude-code-skill
      • claude-code-skills

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/wasulajr/headsup ~/.claude/skills/headsup

      1GitHub starsstable
    • 12

      Agent
      Active

      Generic DeepSeek Harness (dsh) plugins: A2A protocol server, session storage mirror, and Langfuse observability.

      TypeScriptLicense: MIT
      • agent2agent
      • ai-agents
      • cordis
      • deepseek-harness
      • dsh

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 13

      Skill
      Active

      Mide si tu agente de IA cumple las reglas que le escribiste. Lee el historial local de Claude Code y devuelve un porcentaje por regla. Sin instalar nada, sin red, biblioteca estándar.

      PythonLicense: MIT
      • agent-evaluation
      • ai-agents
      • claude-code
      • claude-code-skill
      • claude-code-skills

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/jleonceo/adherencia-reglas ~/.claude/skills/adherencia-reglas

      1GitHub starsstable
    • 14

      Other
      Active

      AgentX python SDK. Build multi-agent AI workforce. Run evaluation. Trace your agent. Full Observability.

      PythonLicense: Apache-2.0
      • a2a
      • agent
      • agent-monitoring
      • evaluation
      • mcp

      githubmeasured growthOpen source ↗

      68GitHub starsstable
    • 15

      MCP
      Active

      Vendor-neutral OpenTelemetry tracing for A2A agents and MCP services, with W3C context propagation and privacy-safe telemetry.

      PythonLicense: MIT
      • a2a
      • agent2agent
      • agentic-ai
      • ai-agents
      • clean-architecture

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 16

      MCP
      Active

      8 MCP SMB products — standalone AI servers for SMBs: Guardrails, FinOps, Observability, Router, Trust Score, Memory, ThinkSecure, A2A Lite. 37 tools, TNC credits billing.

      PythonLicense: MIT
      • a2a-protocol
      • ai-governance
      • finops
      • guardrails
      • mcp

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 17

      Skill
      Active

      Skill instalable para Claude Code que mide si tu agente cumple las reglas establecidas. Lee el historial de sesiones de tu disco y devuelve un porcentaje por regla de cumplimiento. Sin instalar nada, sin red, biblioteca estándar.

      PythonLicense: MIT
      • ai-evaluation
      • claude
      • claude-code
      • claude-code-plugin
      • claude-code-skill

      githubmeasured growthOpen source ↗

      Install /plugin marketplace add jleonceo/skill-adherencia-reglas

      1GitHub starsstable
    • 18

      Skill
      Active

      Real-time execution trace and cost intelligence for Claude Code

      TypeScriptLicense: MIT
      • agentic-workflow
      • ai-productivity
      • anthropic
      • anthropic-claude
      • claude

      githubmeasured growthOpen source ↗

      Install /plugin marketplace add DeibyGS/claudestat

      34GitHub starsstable
    • 19

      Agent
      Active

      The agent framework where the model never holds the trigger — every consequential action clears your policy first, waits for a human when it matters, and lands on a record you can verify. Build on it, or put it around the agent you already…

      PythonLicense: Apache-2.0
      • a2a
      • agent-framework
      • ai-agents
      • ai-governance
      • ai-safety

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 20

      Other
      Active

      Local-first Agentic AI Infrastructure Platform with LLM Gateway, Agent DAG Runtime, MCP Tool Hub, A2A Agent Mesh, Local RAG, Tool Sandbox and Observability.

      Python
      • a2a
      • agent-runtime
      • ai-infra
      • deepseek
      • fastapi

      githubmeasured growthOpen source ↗

      1GitHub starsstable
    • 21

      Skill
      Dormant

      🔍 AI observability skill for Claude Code. Debug LangChain/LangGraph agents by fetching execution traces from LangSmith Studio directly in your terminal.

      License: MIT
      • agent-debugging
      • ai-agents
      • claude-skills
      • claude-skills-creator
      • claude-skills-hub

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/OthmanAdi/langsmith-fetch-skill ~/.claude/skills/langsmith-fetch-skill

      27GitHub starsstable
    • 22

      MCP
      Active

      AgentGateway — independent third-party profile of a public API surface, by API Evangelist. AgentGateway is an open-source, AI-native proxy and gateway for routing, observing, and governing traffic to and from AI agents, LLM providers, and…

      • agent-to-agent
      • ai-gateway
      • api-gateway
      • apis-json
      • cncf

      githubmeasured growthOpen source ↗

      0GitHub starsstable
    • 23

      Agent
      Dormant

      Policy-enforced observability and fail-closed guardrails for MCP/A2A multi-agent systems.

      Rust
      • a2a
      • ai-agents
      • llm-security
      • mcp
      • multi-agent

      githubmeasured growthOpen source ↗

      26GitHub starsstable
    • 24

      Skill
      Active

      Claude Code skills where every entry ships receipts — accuracy-gated benchmarks against baseline and placebo, rejects published

      JavaScriptLicense: MIT
      • agent-skills
      • ai-agents
      • anthropic
      • benchmark
      • claude

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/sjh9714/skill-receipts ~/.claude/skills/skill-receipts

      2GitHub starsstable
    • 25

      Skill
      Active

      Sentry instrumentation skill for system-behavior tracking

      ShellLicense: MIT
      • agent-skills
      • claude-skills
      • codex-skill
      • instrumentation
      • monitoring

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/tortastudios/sentry-instrumentation ~/.claude/skills/sentry-instrumentation

      24GitHub starsstable