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by IgorGanapolsky
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
Hybrid

Parallel Workflow

parallel_workflow
Destructive

Break complex objectives into parallel multi-step subtasks to complete security audits, benchmarks, and repository inspections concurrently.

Instructions

Execute a parallel, multi-step subtask workflow to resolve an objective like a security audit, performance benchmark, or repository inspection.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "objective": "<objective>"
    },
    "name": "parallel_workflow"
  }
}

Input Schema

NameRequiredDescriptionDefault
objectiveYesThe objective to plan and execute (e.g. security audit, performance benchmark)
timeoutMsNoTimeout in milliseconds (default 60000)
concurrencyNoMaximum parallel subtasks (default 3)

Schema Changelog

Changes observed during successful MCP inspections.

  1. Addedv1.31.0
  2. Removedv1.29.2
  3. Addedv1.27.2

TDQS

B3.2/5.0
Behavior2/5

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

The annotations already provide destructiveHint: true, alerting the agent to potential side effects. The description adds no additional behavioral context beyond the annotation—it does not disclose what 'execute' entails, whether it modifies the system, how it handles failures, or what side effects may occur. With the annotation present, the description misses the opportunity to enrich the agent's understanding of the tool's behavior.

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?

The description is a single sentence, front-loaded with the action ('Execute'), and contains no filler. It efficiently conveys the tool's purpose and examples without redundancy.

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

Completeness2/5

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

For a complex tool that executes parallel workflows, the description is too thin. It does not mention what the tool returns, how results are surfaced, or what happens after execution. With no output schema, the description should at least hint at outputs or follow-up actions. It also does not clarify whether this tool initiates background work or blocks until completion, which is relevant given sibling tools like get_task_outcomes.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents all three parameters. The description's mention of example objectives aligns with the 'objective' parameter but adds no new meaning about timeoutMs or concurrency. Baseline 3 is appropriate because the schema carries the semantic weight.

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

Purpose4/5

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

The description clearly states the tool 'execute[s] a parallel, multi-step subtask workflow to resolve an objective', using a specific verb and resource. It provides concrete examples (security audit, performance benchmark, repository inspection) that illustrate the intended scope, though it does not explicitly differentiate from sibling tools like the many plan_* tools.

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

Usage Guidelines3/5

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

The description implies usage when an objective can be decomposed into parallel subtasks, giving example domains. However, it lacks explicit guidance on when to use this tool versus alternatives, such as the plan_* siblings or simpler single-task tools. No exclusions or prerequisites are stated.

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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