Skip to main content
Glama
eforus-overseer

octobrowser-mcp

octo_start_profile

Launch an Octo Browser profile by UUID to obtain a CDP WebSocket endpoint for browser automation. Returns existing connection data if the profile is already running.

Instructions

Start a profile by UUID and return the ws_endpoint for the CDP connection.

If the profile is already running, its current data is returned instead.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
uuidYesOcto Browser profile UUID
headlessNoRun without a GUI
passwordNoProfile password, if the profile is protected

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.3.0

TDQS

A4.3/5.0
Behavior4/5

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

With no annotations, the description carries the full burden. It discloses the main side effect (launching/starting a profile), the returned artifact (ws_endpoint), and an important behavioral trait (already-running profiles are reused). It doesn't describe failure modes or resource implications, but for a simple start action this is solid.

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 two compact sentences with the primary purpose and return value front-loaded, followed by the key conditional behavior. Every sentence adds value and no filler is present.

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 tool's low complexity, fully described parameters, and the presence of an output schema, the description covers the necessary behavioral context. The idempotency note is especially useful and nothing critical is missing for an agent to call this tool correctly.

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 three parameters (uuid, headless, password) are already documented with meaningful schema descriptions. The tool description adds no additional parameter meaning, so the 100% schema coverage baseline of 3 applies.

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 states a specific action (start a profile), the key identifier (UUID), and the concrete return value (ws_endpoint for the CDP connection). It also distinguishes this tool from sibling octo_start_profile_by_name by scoping it to UUID-based lookup.

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

Usage Guidelines4/5

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

The phrase 'by UUID' clearly signals when this tool is appropriate versus name-based alternatives, and the idempotent 'already running' clause tells the agent it can safely reuse it. It does not explicitly say when to choose another tool or mention exclusions, so it misses the top score.

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