Lockstep Core

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link_ticket_chain

DestructiveIdempotent

Associates a ticket with a chain and adds it as a child ticket when a different origin ticket already exists. Use it to group related work in Lockstep Core.

Instructions

Associate a ticket with a chain.

    If the chain already has an origin ticket (ticket_id) and the linked
    ticket is different, the ticket is added as a child_ticket (Decision 2).

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": {
      "params": "<params>"
    },
    "name": "link_ticket_chain"
  }
}

Input Schema

Name	Required	Description	Default
`params`	Yes

Output Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.2.1Sep 13, 2026

TDQS

B3/5.0

Behavior3/5

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

Annotations already declare readOnlyHint=false, destructiveHint=true, idempotentHint=true, which covers the safety profile. The description adds genuinely useful behavior — that a differing ticket becomes a child_ticket when an origin exists — but never explains what a destructive link operation changes or what a 'wrong' link does to the chain.

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

Conciseness4/5

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

Short and front-loaded: the core action leads, followed by the conditional child_ticket rule. No filler sentences, though the '(Decision 2)' reference is opaque without external context.

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

Completeness3/5

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

An output schema exists so return values need not be described, and annotations cover safety. But for a destructive, idempotent mutation tool the missing usage/alternative guidance and param clarification leave it only minimally complete.

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

Parameters2/5

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

Schema description coverage is 0% and the single nested params object hides chain_id/ticket_id. The description only implicitly references ticket_id via the origin-ticket sentence and never clarifies chain_id or how the two interact, so it does not compensate for the coverage gap.

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?

States a specific verb and resource: 'Associate a ticket with a chain.' The second sentence explains the origin/child logic, which sharpens what the operation does. However, it does not distinguish this tool from the closely related sibling add_chain_link, leaving ambiguity about which linking tool to pick.

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

Usage Guidelines2/5

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

There is no when-to-use, when-not-to-use, or alternative-tool guidance. Given the many nearby siblings (add_chain_link, complete_chain_link, create_chain, branch_chain), the agent gets no routing help.

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