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ZennoBrowser MCP Server

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Continues work of the execution thread associated with the thread token.

continue_use_thread
DestructiveIdempotent

Continue an execution thread by providing its thread token, with an optional workspace ID, to resume prior browser automation tasks.

Instructions

This method is used to continue work of the execution thread associated with the thread token.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
threadTokenYesThe unique token of the thread to continue (required).
workspaceIdNoWorkspace identifier. -1 means the default workspace.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.1/5.0
Behavior2/5

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

Annotations already declare readOnlyHint=false, destructiveHint=true, idempotentHint=true, and openWorldHint=false, so the safety profile is carried structurally. The description adds nothing on top — it never explains what state is destroyed, whether the thread must exist, or what 'continue work' actually mutates.

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

Conciseness3/5

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

It is a single short sentence with no padding, but that sentence is pure duplication of the title and conveys no information an agent did not already have, so concision buys nothing here.

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 destructive, non-idempotent-looking thread mutation with no output schema and no annotations explaining return or error behavior, the description leaves core questions unanswered: what continuing a thread does, what happens to an expired or running thread, and what the result is.

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%: threadToken and workspaceId are both documented in the schema, including the -1 default semantics. The description adds no syntax, format, or constraint beyond that, so the baseline 3 applies.

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

Purpose2/5

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

The sentence restates the title almost verbatim: 'continue work of the execution thread associated with the thread token.' It does name a verb (continue) and a resource (execution thread), but offers no differentiation from siblings like bulk_continue_use_thread, create_thread, or stop_thread, and 'continue work' is never defined.

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

Usage Guidelines1/5

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

No when-to-use, when-not-to-use, prerequisites, or alternatives are given. An agent cannot tell from this text whether to call this versus bulk_continue_use_thread, create_thread, or start_browser_instance.

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