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vilaabo

zephyr-scale-mcp

by vilaabo

add_test_steps

Insert new steps into a STEP_BY_STEP test case at a chosen position, preserving all existing steps and their IDs. Merges new steps without deletion, supporting append, prepend, or custom index.

Instructions

Add steps to a STEP_BY_STEP test case without losing the existing ones. Composite operation: reads the test case, merges the new steps at the requested position while preserving existing step ids (so nothing is deleted), and writes the full list back. position: 'append' (default) adds after the last step, 'prepend' before the first, an integer inserts at that 0-based index (clamped to the current length). Only valid when the current script is STEP_BY_STEP or the test case has no script yet (a step-by-step script is then created); for a PLAIN_TEXT or BDD script use set_test_script instead. Returns { key, totalSteps }.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
stepsYesNew steps to insert, in order (no ids). A step carrying testCaseKey is a "Call to Test".
positionNo'append' (default), 'prepend', or a 0-based insertion index into the existing steps (clamped to the list length)
testCaseKeyYesTest case key, e.g. PROJ-T123
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Without annotations, the description fully covers behavioral traits: composite operation (read, merge, write), position behavior (append/prepend/clamped integer), preservation of existing step ids, and return value { key, totalSteps }.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Five sentences, front-loaded with purpose, efficient and no wasted words. Every sentence adds essential information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity of the operation (composite read-merge-write, position logic, script type restrictions) and lack of output schema, the description covers all necessary context completely.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description adds value by explaining position options in detail, clarifying that steps carry no ids, and noting the 'Call to Test' special step.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description starts with a specific verb and resource: 'Add steps to a STEP_BY_STEP test case without losing the existing ones.' It clearly distinguishes from sibling tools like set_test_script, which is for other script types.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly states when to use: only when the script is STEP_BY_STEP or no script yet. Provides a clear alternative: for PLAIN_TEXT or BDD scripts, use set_test_script instead.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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