Performance testingmade simple.

Record real traffic. Write readable scripts. Visualize YAML scripts. Run locally or in the cloud for free.

Explore Relampo CLI Request a demo

Free cloud sandbox

500 VUs included

No credit card

Terminal

$ relampo update brew

✓ Relampo CLI updated

$ relampo record --port 8888 --responses --output scenario.yaml

✓ Generated scenario.yaml with recorded responses

$ relampo correlate scenario.yaml --apply

✓ Correlated YAML written to scenario.yaml.correlated.yaml

$ relampo run scenario.yaml.correlated.yaml

▶ Running correlated scenario...

⚡ Test completed successfully

How it works

From recording to resultsin 4 simple steps

Record or Import

Capture real traffic or import existing tests

Edit YAML Script

Run your Script

Analyze Results

Readable Scripts

YAML that yourwhole team can read

Relampo uses YAML for test scripts in a format that's easy to read, review, and version-control.

Declarative syntax

Define what to test, not how to run it

Version-control friendly

Clean diffs in pull requests

Team-readable

QA, developers, and ops understand the same script

Strict validation

Catches indentation errors before execution

Why YAML? (And the Indentation Question) Yes, it's indentation-sensitive—like Python, Kubernetes, and Ansible. Relampo controls it with strict validation that catches errors before wasting test time.

✓ Valid YAML with advanced featuresscenario.yaml

scenarios:

- name: Login & Order Flow

load:

users: 50

duration: 2m

steps:

- request:

method: POST

url: /login

body:

username: test

password: secret

extract:

token: $.token

assert:

status: 200

- think_time: 1s

- POST: /api/orders

body:

product: "item-123"

quantity: 2

No compilation. No complex syntax. Just clear test scripts that work.

Visual Editor

Edit your script froma powerful UI

Build and edit test scripts visually without depending on manual YAML writing. Use tree mode for structure and code mode when you want raw control.

Tree-based editing

Organize scenarios, requests, extractors, and assertions as nodes.

Visual + code modes

Switch between UI controls and YAML view at any time.

Safer structure changes

Avoid indentation mistakes and malformed YAML blocks.

Focused detail panels

Edit request and response fields with clear, contextual forms.

YAML Tree Nodes

Unsaved

Tree

Code

Common node blocks you can configure visually

Recorded Scenario
- Data Source
- HTTP Defaults
- Load: constant
- Steps
  - HTTP Request /auth/login
    POST
    - Headers
    - Extractor
    - Assertion
  - Think Time · 1500ms
  - Condition Controller
    - HTTP Request /checkout/submit
      POST
      - Headers
      - Extractor
      - Assertion
      - Spark before/after
      - Load Attach

Prefer clicks over spacing rules? Build your script visually and export clean YAML whenever you need it.

Correlation CLI

Correlate dynamic values without manual YAML edits

Detect candidates, review a compact table, and apply selected IDs.

Correlation flow

$ relampo correlate script.yaml

[relampo] Found 39 potential correlation candidates (showing 23 grouped rows)

Table sample (2 rows)

ID	Variable Name	Value	Source (response)	source.location	Used in (request)	Score
1	authToken	AUTH_DYNAMIC_123	POST /api/v1/auth/context	response.body	GET /api/v1/client-bootstrap	0.65
2	X-Correlation-ID	corr-20260226-aa01	POST /api/v1/auth/login	response.header	GET /api/v1/user/profile	0.58

$ relampo correlate scenario.yaml --apply-ids "1,2"

✓ Correlated YAML written to scenario.correlated.yaml

Free Cloud Sandbox

Stop running tests on your laptop

Use our free cloud sandbox with 500 concurrent VUs and 33 hours/month of load generation. Zero setup, zero infrastructure headaches.

Consistent AMD EPYC nodes (2 vCPUs, 8GB RAM)

Distributed load across 4 generator nodes

No credit card required to start

Quick start

~2 minutes to first test

$ relampo update brew
$ relampo record --port 8888 --responses --output newscript.yaml
$ relampo correlate scenario.yaml --apply
$ relampo run scenario.yaml.correlated.yaml

What's next

What we're building

CLI-first today. Full E2E platform tomorrow.

AVAILABLE NOW AND FOREVER

Relampo CLI

HTTP/HTTPS Recording
Postman → YAML Converter
YAML Script Editor
Auto Correlation
YAML Scripting & Validation
Run locally or in the cloud (500 VUs)
Results Export & Analysis

Coming Soon

Relampo E2E UI

End-to-end performance testing
Recording (HTTP/HTTPS) + Converters (Postman/JMeter → YAML)
AI-assisted correlation (auto-detect tokens/dynamic values)
Debugging workflow (request visibility, replay, diffs)
Distributed load generation at scale
Monitoring during runs (system + app signals)
AI results analysis (summaries, anomalies, comparisons)

Available soon

Relampo League

Build yourtechnical reputation with real execution

Relampo League v2 recognizes users for consistent execution, broad test coverage, and deep automation maturity measured from objective product telemetry.

Scoring Categories (v2)

Execution

Tests Executed + Execution Time + Active Days / Consistency.

Coverage

Unique Projects Tested each month (max 10 projects scored).

Automation Depth

Correlations Implemented + Script Quality signals.

Initial Scoring Formula

Tests Executed: +1 point every 100 tests.
Execution Time: +1 point every 30 minutes.
Unique Projects Tested: +3 per project, max 10/month.
Correlations Implemented: +2 per valid correlation.
Active Days: +1 per active day (+3 / +5 / +10 consistency bonuses at 5 / 10 / 20 days).
Script Quality: +1 every 5 assertions, +1 every 3 dynamic variables, +2 for 10+ useful steps, +3 with no critical validation errors.

Leaderboard - Top 10

🥇

Delvis Echeverria

Lightning487 pts

325

🥈

Sarah Chen

🌪️Storm312 pts

189

🥉

Marcus Johnson

🌪️Storm298 pts

103

142

Ana Rodríguez

🌪️Storm245 pts

David Kim

🌪️Storm189 pts

Emma Wilson

🌩️Thunder142 pts

Raj Patel

🌩️Thunder98 pts

Lisa Anderson

Bolt67 pts

Tom Martinez

Bolt45 pts

#10

Nina Kowalski

Bolt23 pts

Relampo League rewards real execution, consistency, coverage, and script quality.

Monthly Rewards — Top 3

Temporary benefit for 1 month (promo reward)

Virtual Users

500750

Load Generators

⚡Our Team

Built by software engineers who understand testing

A small team obsessed with making performance testing accessible to everyone

Delvis

Team Lead

The one who started it all: created the first MVP and brought the team together. Faithful lover of performance testing, always looking for smarter (and less painful) ways to break systems before they break in production.

Angel

Software Engineering Lead

The guy who turns ideas into real, working products. Full-stack mindset (backend + frontend) and super hands-on – he's the technical engine behind the team.

Violena

Product Lead

The organizer who brings structure and focus. She keeps the team aligned and makes sure all the effort actually turns into a clear, meaningful product.

Alayo

AI & Data Engineer

Our AI and data enthusiast. He's the one adding intelligence to our performance processes, always thinking about automation, insights, and smarter decisions.

Ready to simplify yourperformance testing?

Write readable scripts. Run tests on cloud infrastructure. Get results faster. All for free.

▶Start Testing

Questions? Email us at info@relampo.com