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echoclient

Use this for HTTP load tests or custom traffic generation, also for non-HTTP load generation.

Skill by tsaarni

IndexedApache-2.0
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/tsaarni-echoclient

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Use this for HTTP load tests or custom traffic generation, also for non-HTTP load generation.

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/echoclient

What's inside

Skill name
echoclient
Description
Use this for HTTP load tests or custom traffic generation, also for non-HTTP load generation.
License
Apache-2.0
Instructions
36 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

## CLI

Only for HTTP 

```
go run github.com/tsaarni/echoclient/cmd/echoclient@latest get -url http://localhost:8080 -concurrency 10 -duration 30s -rps 100 -ramp-up-period 5s
go run github.com/tsaarni/echoclient/cmd/echoclient@latest upload -url http://localhost:8080/upload -concurrency 5 -size 100MiB -chunk 64KiB -repetitions 10
```

Use `--help` on the subcommands for more options.

## Go API

Refer to source for details, you can find it here `go list -m -f '{{.Dir}}' github.com/tsaarni/echoclient@latest`

```go
pool := worker.NewWorkerPool(loadFunc,
    worker.WithConcurrency(10),
    worker.WithDuration(10*time.Second),
    worker.WithRateLimit(100, 100),
)
pool.Launch()
pool.Wait()
```

loadFunc is: `func(ctx context.Context, wp *worker.WorkerPool) error` — not limited to HTTP.

Features:
- Multi-step traffic profiles with `NewMultiStepWorkerPool` and easing functions (`EasingLinear`, `EasingIn`, `EasingOut`, `EasingInOut`)
- Worker composition with weighted mixing (`worker.Mix`)
- Streaming data generator (`generator.NewReader`)
- Instrumented HTTP client (`client.NewMeasuringHTTPClient`)
- Metrics: tabular dump (`metrics.DumpMetrics`) and Prometheus endpoint (`metrics.StartPrometheusServer`)
- Runtime control: `SetRateLimit`, `SetConcurrency`, `SetWorker`, `Stop`

From tsaarni/agent-skills, Apache-2.0.

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Last commit (this folder)
Aug 14, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
Apache-2.0
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

More from tsaarni

Cite this page

echoclient skill. Agent Mart. https://agentmart.dev/skills/tsaarni-echoclient (last updated 2026-10-24)