Bulk API Tester
Test entire API fleets with reusable suites, live monitoring, and automation hooks.
Bulk API Tester
Execute hundreds of REST, GraphQL, or gRPC calls in parallel, capture rich observability data, and hand off failing requests to the classic API Tester in a single click.
Concurrent workers
Up to 100
Suite templates
Health • Load • Regression
Alert channels
Slack · PagerDuty · Webhooks
Bulk suite builder
Compose multi-step API suites, manage variables, and execute them with guarded concurrency.
Suite requests
Define each request in the suite. Toggle the checkbox to temporarily skip an item without deleting it.
Environment variables
Use {{VARIABLE_NAME}} syntax across URLs, headers, and bodies. Values are injected before execution.
Run overview
Track completion, success rate, and latency statistics while the suite runs.
- Enabled requests
- 0
- Completed
- 0/0
- Success
- 0
- Failures
- 0
- Average duration
- —
- Fastest request
- —
- Slowest request
- —
Execution results
Inspect status codes, durations, and captured errors for every request in the suite.
| Request | Status | Duration | Size | Error |
|---|---|---|---|---|
| Run the suite to see request-by-request results here. | ||||
Project Overview
Bulk API Tester extends the single-request API Tester with tooling for batch execution, performance benchmarking, and production monitoring.
Run orchestrated suites that mix health checks, regression flows, and stress scenarios.
Observe percentile charts, throughput trends, and error taxonomies while a run is live.
Promote saved API Tester calls into reusable suites without rebuilding headers or auth presets.
Pair with API Tester
Use the original API Tester for deep debugging, then graduate stable requests into bulk suites for fleet-wide validation.
Discover→Continuous Reliability
Blend scheduled suites with alert thresholds so platform and SRE teams get notified before SLOs drift.
Core Value Pillars
Everything teams need to move from ad-hoc endpoint checks to disciplined API observability.
Suite Composition
Group endpoints by journey, inherit shared variables, and chain dependent requests with response extractions.
Guarded Concurrency
Tune worker pools, rate limits, and stop conditions so aggressive tests never overload downstream services.
Performance Analytics
Compare p50/p90/p99 latency, throughput, and error budgets across environments with exportable reports.
Automation Bridge
Trigger suites from CI/CD, cron schedules, or webhooks, and stream structured events to monitoring tools.
Who Uses Bulk API Tester
Purpose-built for cross-functional teams owning API reliability.
Backend & Platform Engineers
Validate new endpoints, monitor SLOs, and reproduce production incidents with controlled replay suites.
QA Automation Teams
Execute regression packs with assertions, data extraction, and rich reporting ready for stakeholders.
DevOps & SRE
Schedule health checks, wire alerts to on-call tooling, and keep live dashboards aligned with SLIs.
Security & Compliance
Run policy-based checks for TLS, rate limiting, sensitive-data masking, and regulatory controls.
Startups & Growth Teams
Spin up realistic load tests before launch without standing up bespoke infrastructure.
Playbook Use Cases
Templates drawn from the design document cover the most common reliability jobs.
Bulk Health Checks
Ping mission-critical endpoints every few hours and alert when success rate or latency slips past your SLO.
Load & Stress Launch
Ramp thousands of virtual users, mix weighted scenarios, and study p99 latency before shipping.
Regression Journeys
Chain multi-step flows such as onboarding or checkout, with response assertions at every touchpoint.
Compliance Verification
Codify PCI, SOX, or internal policies with suite-wide checks for TLS enforcement, masking, and rate limits.
Health Check Suite
Schedule lightweight probes every six hours and alert the on-call channel if SLOs are breached.
const healthCheckSuite = {
name: 'API Health Check',
tests: [
{ name: 'User API', url: '{{BASE_URL}}/api/users', method: 'GET' },
{ name: 'Auth API', url: '{{BASE_URL}}/api/auth/verify', method: 'POST' },
{ name: 'Orders API', url: '{{BASE_URL}}/api/orders', method: 'GET' },
{ name: 'Products API', url: '{{BASE_URL}}/api/products', method: 'GET' }
],
schedule: '0 */6 * * *',
alertThreshold: { successRate: 95, maxResponseTime: 2000 }
};typescript
Login Load Test
Model peak traffic, verify the service stays within latency targets, and capture retry behaviour.
const loadTestConfig = {
name: 'Login API Load Test',
target: {
url: '{{BASE_URL}}/api/auth/login',
method: 'POST',
body: { email: '[email protected]', password: 'password123' }
},
load: { users: 100, duration: '5m', rampUp: '30s', iterations: 1000 },
assertions: [
{ type: 'status', value: 200 },
{ type: 'response_time', operator: '<', value: 500 },
{ type: 'success_rate', operator: '>', value: 99 }
]
};typescript
Suite Orchestration
Drag, group, and reuse requests with guardrails for stability and visibility.
Templates & Journeys
Start from health, regression, or custom templates. Nest steps, reuse snippets, and inherit environment presets.
Execution Controls
Configure concurrency, batch size, delay, timeout, retry policies, and stop conditions per suite.
Alert & Schedule
Define cron expressions, time zones, and notification rules so reliability checks never get forgotten.
Core Components
Architecture blocks lifted directly from the technical design notes.
Test Runner
Creates worker pools, batches requests, tracks progress, and aggregates suite-level results.
- • Dynamic worker pool
- • Batch execution
- • Fail-fast awareness
Concurrency Controller
Semaphores and rate limiting keep tests within safe bounds while updating progress callbacks.
- • Token bucket limiter
- • Semaphore guard
- • Progress hooks
Real-time Monitor
Streams live metrics, derives success/error rates, and triggers alert conditions when thresholds break.
- • Live charts
- • Alert conditions
- • Subscriber updates
Performance Analyzer
Calculates percentile latency, throughput, error taxonomies, and shares exportable performance reports.
- • P50/P95/P99
- • Throughput & bandwidth
- • Recommendations
Suite Manager
Keeps version history, manages variables, and handles imports from API Tester, Postman, or Insomnia.
- • Versioning
- • Variable library
- • Importer bridge
Modular Architecture
Execution, analysis, and operations layers remain decoupled so the system can scale with your traffic.
Execution Pipeline
- Async worker orchestration
- Rate limiter & burst control
- Stop conditions for error budgets
Analysis Layer
- Latency histograms
- Error taxonomy (network, timeout, 5xx)
- Throughput & bandwidth calculators
Operations Toolkit
- Suite manager & versioning
- Environment/secret library
- Alert + dashboard integrations
Monitoring & Insights
Stay informed while runs are live and share insights afterwards.
Live Percentiles
Watch p50/p90/p95/p99 evolve second by second to catch regressions early.
Error Atlas
Group failures by transport, timeout, or server error so mitigations are obvious.
Retry Forensics
Break down automatic retries, fallbacks, and which attempt succeeded.
Payload Snapshots
Capture representative request/response samples for postmortems without logging every call.
Interface Principles
UI/UX patterns outlined in the design document are reflected in the production experience.
- Navigation split between Dashboard, Test Suites, and Reports mirrors the documented layout.
- Cards and live charts highlight success metrics, percentile trends, and failure taxonomies.
- Mobile layout condenses suites into stacked cards so on-call engineers can act from phones.
Quickstart Guide
Follow the proven workflow from the documentation to launch your first suite.
Create a Suite
- • Click "New Test Suite", name it, and choose a template (Health, Load, Regression, Custom).
- • Invite teammates or keep it private depending on your workflow.
Add API Tests
- • Define request URL, method, headers, and payload.
- • Add assertions for status codes, response time, body content, or JSON paths.
Run & Observe
- • Configure concurrency, iterations, delay, and timeout before launching.
- • Monitor live charts, pause or stop runs, then export a full report.
Import & Promotion
Move faster by reusing the work you have already done.
From API Tester
Select saved requests, keep variables and secrets intact, and convert them into suite steps instantly.
- • Shared variable store
- • Auth presets intact
- • One-click promotion
Postman & Insomnia
Upload exported collections and workspaces. Bulk API Tester maps folders to suites and preserves tests.
- • Folder to scenario mapping
- • Environment variable extraction
- • Assertion conversion
Report & Share
Turn test runs into decisions with structured exports and digests.
Performance Summary
Receive a snapshot of latency stats, throughput, and success rate across environments.
Export Options
Share results as PDF, CSV, JSON, or webhook payloads for downstream automation.
Alert Thresholds
Notify teams when success rate dips, latency spikes, or error categories exceed budgets.
Real-world Wins
Outcomes reported in the design doc from teams using the Bulk API Tester blueprint.
Global Commerce Health Monitoring
Scheduled 150+ service checks, cut manual verification from hours to minutes, and surfaced incidents within five minutes.
- • +90% monitoring efficiency
- • -80% fault detection time
- • +0.4% availability gain
Gaming Launch Load Test
Modeled launch-day traffic with weighted scenarios, resolved three bottlenecks, and hit 580 RPS at p99 < 1s.
- • Peak 580 RPS
- • 99.2% success
- • p99 850 ms
Financial Compliance Automation
Encoded PCI DSS checks covering TLS, rate limiting, and masking, reducing manual audits and proving controls on demand.
- • Automated PCI validation
- • Sensitive data masked
- • Rate-limit enforcement verified
Automation & Integrations
Built to plug into modern delivery pipelines and observability stacks.
Scheduled Runs
Use cron-like scheduling to run suites hourly, nightly, or ahead of peak traffic windows.
- • Timezone aware
- • Skip windows
- • Auto resume
CI/CD Hooks
Invoke suites from pipelines with signed tokens, git hooks, or CLI scripts and feed results back into build status.
- • CLI runner
- • Config-as-code
- • Status checks
Alerting Channels
Push success-rate drops or latency spikes to Slack, Teams, PagerDuty, or custom webhooks.
- • Rate-limited alerts
- • Rich payloads
Shared Variable Store
Centralise secrets and per-environment overrides while syncing back to API Tester for deep dives.
- • Masked secrets
- • Environment overrides
Bulk API Tester FAQ
Clarifying the relationship with API Tester and the bulk workflow.
How is Bulk API Tester different from API Tester?
Use API Tester to debug a single request with rich inspectors. Bulk API Tester takes those saved calls, runs them in parallel, and adds scheduling, analytics, and alerting.
How many concurrent requests can I run?
Up to 100 concurrent workers per suite with guardrails for ramp-up, stop conditions, and rate limits so downstream systems stay safe.
Can I import Postman or Insomnia collections?
Yes. Upload collections or workspaces and Bulk API Tester converts them into suites, preserving requests, tests, and environment variables.
Does it support scheduled or automated runs?
Absolutely. Configure cron expressions, integrate with CI/CD, or trigger suites through webhooks to keep API health checks hands-free.
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