List every TestLink test project visible to the authenticated API key (tl.getProjects).

Create a new TestLink test project (tl.createTestProject).

List test suites: top-level suites for a project (tl.getFirstLevelTestSuitesForTestProject), or child suites of a given suite (tl.getTestSuitesForTestSuite) when parentSuiteId is supplied.

Create a test suite inside a project, optionally nested under a parent suite (tl.createTestSuite).

Update an existing test suite's name, details, parent, or order. CAVEAT: tl.updateTestSuite is not part of TestLink's stock public API on most installations — run the list_available_api_methods tool first to confirm your server exposes it.

Delete a test suite. CAVEAT: tl.deleteTestSuite is not part of TestLink's stock public API on most installations — run the list_available_api_methods tool first to confirm your server exposes it.

Fetch a test case by internal id, or by external id (+ optional version) (tl.getTestCase).

Create a new test case inside a test suite (tl.createTestCase).

Update fields on an existing test case, identified by external id (tl.updateTestCase). To write custom field values, use update_custom_field_value instead — tl.updateTestCase has no custom field parameter of its own.

Delete a test case by internal id. CAVEAT: tl.deleteTestCase is not part of TestLink's stock public API on most installations — run the list_available_api_methods tool first to confirm your server exposes it.

List the test cases contained in a test suite (tl.getTestCasesForTestSuite).

Read a custom field's value for a specific test case version (tl.getTestCaseCustomFieldDesignValue).

Write one or more custom field values on a test case (tl.updateTestCaseCustomFieldDesignValue). Requires the exact version and project id the field values belong to — TestLink stores custom field values per test case version, not just per external id.

Best-effort custom field discovery. TestLink's XML-RPC API has NO endpoint to enumerate custom field definitions for a project — only to read a named field's value on a specific test case. Supply a representative test case plus a list of candidate field names (visible in TestLink Admin > Custom Fields) and this probes each one, returning only the fields that resolved to a non-empty value for that test case.

List requirements for a project, optionally scoped to a test plan/platform/requirement specification (tl.getRequirements).

Create a requirement specification container, the parent grouping for requirements (tl.createRequirementSpecification).

Create a requirement inside a requirement specification (tl.createRequirement).

Link one or more requirements to a test case (tl.assignRequirements).

Fetch a single requirement by requirement id or doc id. TestLink's API has no direct single-requirement lookup — this calls tl.getRequirements for the project and filters client-side.

List all test plans for a project (tl.getProjectTestPlans).

Create a new test plan inside a project (tl.createTestPlan).

Add a specific test case version to a test plan, optionally for a platform (tl.addTestCaseToTestPlan).

List the test cases (with execution status) attached to a test plan (tl.getTestCasesForTestPlan).

Delete a test plan. CAVEAT: tl.deleteTestPlan is not part of TestLink's stock public API on most installations — run the list_available_api_methods tool first to confirm your server exposes it.

Create a new build under a test plan (tl.createBuild).

List every build defined for a test plan (tl.getBuildsForTestPlan).

Mark a build as closed/inactive. CAVEAT: TestLink's public API has no dedicated close-build endpoint on most installations — run the list_available_api_methods tool first to confirm your server exposes tl.closeBuild.

Report a test case execution result against a build within a test plan (tl.reportTCResult).

Fetch the last execution result for a test case within a test plan/build/platform (tl.getLastExecutionResult).

List every XML-RPC method the connected TestLink server actually exposes (standard system.listMethods introspection). Use this to check whether non-standard methods relied on by update_test_suite, delete_test_suite, delete_test_case, delete_test_plan, and close_build are available before calling them — those are not part of every stock TestLink installation.