google/martian

Health v2 · maintenance only

Flags: archived

Adoption not part of the score

2041 stars · 254 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Martian is a programmable HTTP/S proxy library written in Go, designed primarily for testing. It lets developers intercept, inspect, and modify HTTP requests and responses at the network layer via configurable modifiers.

Use cases

• mock external services at the network layer during tests
• verify that requests are sent over HTTPS
• inject or modify HTTP headers and cookies in transit
• capture HAR logs of all proxied traffic
• unwrap encrypted HTTPS traffic for inspection
• verify that analytics pingbacks fire as expected

When to choose

• you need a programmable, scriptable HTTP proxy for integration testing
• you want to mock or mutate HTTP traffic at the network layer rather than in application code
• you need HAR capture of requests and responses
• you want a Go library you can embed or cross-compile anywhere

When to avoid

• you need a general-purpose end-user proxy with a GUI like Charles or Fiddler
• you need high-throughput production proxying rather than testing
• you are not working in Go or comfortable with JSON-based runtime configuration

Facets

library · maturity maintenance

http-server middleware testing mocking proxy developer-tools testing networking web-development go cross-platform cli http-proxy traffic-inspection har-logging network-mocking https-interception

Member repositories

For agents

markdown · JSON · MCP: product_card(name="google/martian")