Skip to content
All tools
API Check

Know how your public endpoint responds.

Inspect a public API endpoint for response status, timing, headers, and response structure without sending write operations.

  • HTTP status and response timing
  • Response content type and structure
  • Transport and relevant response headers
  • Bounded read-only endpoint behavior
$29one-time full run
Up to 10 endpoints per runMonthly option: $59/month, four runs
Start here

Run a free preview

1 endpoint. No card required.

If your account already has a paid allowance for this exact target, this check uses one available run.

Use a public target. Do not include passwords, tokens, personal information, or private network addresses.

Verify your domain

API checks require DNS verification, including free checks. Verify the exact target hostname. You can do this from an anonymous session.

API method and optional saved credentials

Schema checks use only the selected read-only request and declared response schema. Unsupported document features are reported as skipped; a passing check is not a complete API certification. Keep credentials and private data out of schema documents and URLs.

Only a saved credential ID is sent with a scan. Credential values are never included in reports. Manage encrypted API credentials.

Reports are private to your session. Save downloads before clearing browser cookies.
Understand the scope

A report with clear boundaries.

Each report lists the checks performed, the resources reached, and any checks skipped. Findings include observed or heuristic confidence so you can judge the evidence.

  • Public read-only endpoints only; do not include API keys or credentials in the URL.
  • Not a load test, security audit, or a guarantee of API correctness.
  • No uptime or continuous monitoring interval is implied.

Account and target verification are required for subscriptions. Payment and report access are confirmed by the server.

One-time purchases cover one paid run and do not renew. Monthly plans renew automatically and include four paid runs per billing period for one verified target. Unused runs do not roll over. Cancel through the billing portal before your next renewal; access continues until the current paid period ends. Prices in USD. You’ll see the total before payment. Terms of use · Privacy policy.

Before you start

What does the free preview include?

1 endpoint. The preview shows up to five findings with the scope and limitations of the scan. Zero findings means no issues were detected by those checks, not a guarantee that none exist.

What does a paid run include?

Up to 10 endpoints per run. A confirmed purchase unlocks the paid allowance and full available findings, plus HTML and PDF exports. Reports remain private to the owning session or account.

Can I check a private target?

Use a public HTTPS endpoint on your verified domain. You may select an encrypted, saved read-only API credential from your account. Internal network targets remain blocked.

01Zof Console

One surface for posture, operations, and what needs attention next.

The authenticated home that engineering, QA, and SRE teams open every day: quality posture, in-flight runs, coverage by module, and what needs attention next.

OPERATIONAL KPIs

  • Runs
  • Coverage
  • Risk

Live across every environment you ship to.

WORK SPINE

  • Specs
  • Tests
  • Schedules

From specification to scheduled regression.

GUARDRAILS

  • RBAC
  • SSO
  • audit

Every action attributable to a named human.

LIVE/console
Zof home command center showing 12 runs at 94% pass, 3 open critical issues, 84% coverage, four module traceability bars, the specification pipeline, upcoming schedules, and recommended next actions with an active-runs sidebar.
Example console home · Checkout Service · Staging.