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SceneScout

by brunoboto96
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TypeScript
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scout_back

Navigate back in browser history to test back-button resilience, checking that pages prompt before discarding unsent input when you leave.

Instructions

Go back in browser history (tests back-button resilience).

Input Schema

NameRequiredDescriptionDefault
taskNoWhat you are DOING right now, in a few words: the action, not the acceptance criteria. "Filtering the documents register by status", "Filling the deviation form with invalid dates", "Signing in as QA_Team" — NOT "§2.4 filtering narrows the set and the filter is reflected in the URL", which is what you are CHECKING, not what you are doing. Naming the item you are on is fine ("§2.4: filtering the documents register"); keep the rest to what a colleague would see over your shoulder. It stays set until you pass a different one, so a batch costs a few words, not one per call. Required on the tools that act unless a journey or an earlier call already set one.
leaveNoHow to answer if the page asks to confirm leaving (a beforeunload prompt over unsent input): true leaves and discards that input, false stays. Omitted, observe and read-only stay and other modes leave. The result says when the page asked.
sessionNoTarget this session directly instead of the active one — pass it explicitly when dispatching to MULTIPLE sessions in one turn (e.g. two scout_click calls with different `session`), which then run CONCURRENTLY rather than queueing. Omit for single-session sequential use.
objectiveNoOld name for `task` (2.0). Prefer `task`.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv3.31.0
    • removedInput schema / additionalProperties
      Removed value: -false
  2. Changed1 schema field changedv3.17.0
    • addedInput schema / properties / leave
      Added value: +{
+  "description": "How to answer if the page asks to confirm leaving (a beforeunload prompt over unsent input): true leaves and discards that input, false stays. Omitted, observe and read-only stay and other modes leave. The result says when the page asked.",
+  "type": "boolean"
+}
  3. Changed2 schema fields changedv3.4.0
    • addedInput schema / properties / objective
      Added value: +{
+  "description": "Old name for `task` (2.0). Prefer `task`.",
+  "maxLength": 120,
+  "type": "string"
+}
    • addedInput schema / properties / task
      Added value: +{
+  "description": "What you are DOING right now, in a few words: the action, not the acceptance criteria. \"Filtering the documents register by status\", \"Filling the deviation form with invalid dates\", \"Signing in as QA_Team\" — NOT \"§2.4 filtering narrows the set and the filter is reflected in the URL\", which is what you are CHECKING, not what you are doing. Naming the item you are on is fine (\"§2.4: filtering the documents register\"); keep the rest to what a colleague would see over your shoulder. It stays set until you pass a different one, so a batch costs a few words, not one per call. Required on the tools that act unless a journey or an earlier call already set one.",
+  "maxLength": 120,
+  "type": "string"
+}
  4. Addedv1.1.0

TDQS

B3.2/5.0
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 burden, yet it says nothing about behavior: what happens at the start of history, whether the navigation waits for load, whether a beforeunload prompt can block it (the schema's `leave` param implies it can), or what the result indicates.

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?

A single short sentence with no waste; the core action is front-loaded. It is arguably too terse for a tool with zero annotations, but nothing is redundant.

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 tool is simple and its schema is richly documented, so most calling information is present. However, with no annotations and no output schema, the description leaves behavioral expectations (history boundaries, prompt handling, result reporting) entirely unaddressed.

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% and the parameters (task, leave, session, objective) are thoroughly documented in-schema, including the beforeunload semantics. The description adds nothing beyond baseline for parameters.

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+resource ("Go back in browser history") and adds the testing intent in parentheses. It is clearly distinguishable from scout_navigate and scout_click, though it doesn't name those siblings explicitly.

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 parenthetical "tests back-button resilience" hints at when this is used (back-button/beforeunload resilience checks), but there is no explicit when-to-use vs. scout_navigate, no exclusion conditions, and no mention of what to do if there is no history.

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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