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claim_seat

Acquire an exclusive single-writer execution seat for a domain to prevent concurrency collisions. Specify the seat ID, holder session, and optional lease duration.

Instructions

Acquire exclusive single-writer execution seat for a domain (e.g. 'domain:cli', 'domain:db').

Input Schema

NameRequiredDescriptionDefault
domainNoPermission domain boundary (default: 'domain:cli').
seat_idYesTarget seat identifier (e.g. 'domain:cli').
lease_ttl_secNoLease duration in seconds before auto-expiration (default: 300).
holder_session_idYesAgent session ID claiming the seat.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3.1/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full behavioral burden. It discloses the exclusive single-writer nature of the seat, but omits critical behavior for a lock-acquisition tool: what happens if the seat is already held, whether acquisition blocks or fails, auth requirements, and lease renewal/release semantics.

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, front-loaded sentence with no wasted words. It efficiently communicates the core action and scope.

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?

The purpose is adequately stated and the schema fully documents parameters, but with no annotations and no output schema, the description could do more to explain acquisition semantics such as conflict handling and lease behavior. It is minimally viable but leaves notable behavioral gaps.

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 all four parameters are already documented in the input schema. The description adds no additional meaning about parameter formats or constraints beyond the examples already present in the schema.

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 states a specific verb ('Acquire'), resource ('execution seat'), and key scope ('exclusive single-writer', domain examples). It is clear what the tool does, but it does not explicitly differentiate itself from siblings such as release_seat or execute_domain_command.

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 explicit guidance about when to use this tool versus alternatives like release_seat or execute_domain_command. The purpose implies claiming a seat before execution, but no conditions, prerequisites, or exclusions are stated.

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