agentgateway
★ 5.7k
vs
lunar
★ 506
agentgateway vs lunar
agentgateway: Agentgateway is an open-source proxy offering a complete connectivity solution for Agentic AI, built on AI-native protocols like MCP and A2A. It provides security, observability, and governance for agent-to-LLM, agent-to-tool, and agent-to-agent communication across various frameworks.; lunar: Lunar.dev is an open-source platform designed to manage, govern, and optimize third-party API consumption for applications and AI agent workloads at scale. It acts as a unified API Gateway for the AI era, providing a crucial mediation layer between applications, agents, and external services.
01
TL;DR
agentgatewayObservability · ★ 5.7k
When to choose:
- You want one proxy for LLM calls (OpenAI-compatible API with spend controls, failover and load balancing), MCP tools and A2A traffic.
- You need guardrails from several sources: regex, OpenAI moderation, AWS Bedrock Guardrails, Google Model Armor or webhooks.
- You need security and observability built in: JWT, API keys, OAuth, RBAC with a CEL policy engine, rate limiting, TLS and OpenTelemetry.
When to skip:
- You only need to bridge one MCP transport: a small proxy is simpler.
- You want the inference-routing features without Kubernetes: the README ties them to Kubernetes Inference Gateway extensions.
- You want detailed setup instructions in the README: it is short and points to the documentation site.
lunarObservability · ★ 506
Governing and securing third-party API access for AI agents and autonomous workflows.
02
Side-by-Side Comparison
Field
agentgatewaylunarCategory
Observability
Observability
Stars
★ 5.7k
★ 506
License
Apache-2.0
MIT
Install Command
curl -sL https://agentgateway.dev/install.sh | bash -s -- --install-path /usr/local/bin
git clone https://github.com/TheLunarCompany/lunar.git
Updated
1d ago
2d ago
Open Source
Yes
Yes
Tags
AI Gateway, Multi-Agent Communication, LLM Proxy
API Gateway, API Management, AI Agent Management
03
Features
agentgateway01LLM Gateway: Route traffic to major LLM providers through a unified OpenAI-compatible API with budget controls, load balancing, and failover.
02MCP Gateway: Connect LLMs to tools and external data sources via MCP with OpenAPI integration and OAuth authentication.
03A2A Gateway: Enable secure agent-to-agent communication using A2A, with capability discovery, modality negotiation, and task collaboration.
04Guardrails: Multi-layered content filtering with regex, OpenAI moderation, AWS Bedrock Guardrails, Google Model Armor, and custom webhooks.
05Security & Observability: Provide authentication (JWT, API keys, OAuth), fine-grained RBAC, rate limiting, TLS, and OpenTelemetry metrics/logs/tracing.
lunar01Live API Traffic Visibility
02AI-Aware Policy Enforcement
03Advanced Traffic Shaping
04Cost & Performance Optimization
04
Use Cases
agentgateway↳Managing and routing traffic to multiple LLM providers with a unified API and cost controls.
↳Enabling secure and standardized communication between AI agents and external tools/data sources.
↳Facilitating collaborative task execution among multiple AI agents across different environments.
↳Implementing intelligent inference routing for self-hosted models based on resource utilization.
↳Applying multi-layered content filtering and moderation for AI interactions to ensure safety and compliance.
lunar↳Governing and securing third-party API access for AI agents and autonomous workflows.
↳Optimizing cost, performance, and token usage of external APIs, including LLMs.
↳Ensuring API reliability and load management for applications and services.
↳Centralizing API traffic aggregation and observability for complex microservice architectures.
05
Best For
agentgatewayEssentialTrending
lunarTrending
FAQ
FAQ
What is the difference between agentgateway and lunar?
Both agentgateway and lunar are in the Observability category. agentgateway has 5.7k stars, while lunar has 506 stars.
Which is better, agentgateway or lunar?
The best choice depends on your use case. Choose agentgateway if Managing and routing traffic to multiple LLM providers with a unified API and cost controls., and lunar if Governing and securing third-party API access for AI agents and autonomous workflows..
Is agentgateway free or open source?
Yes, agentgateway is open source on GitHub (Apache-2.0).
Is lunar free or open source?
Yes, lunar is open source on GitHub (MIT).
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