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Vivere

by dev.vivere
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Get pixel

get_pixel
Read-onlyIdempotent

One pixel and its newest loads: when, from which page, browser, language and platform.

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": {
      "pixel_id": "<pixel_id>"
    },
    "name": "get_pixel"
  }
}

Input Schema

NameRequiredDescriptionDefault
limitNoHow many loads, 1 to 200; default 50
pixel_idYesPixel id

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

B3.2/5.0
Behavior3/5

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

Annotations already cover read-only, idempotent, non-destructive, closed-world behavior. The description adds useful return-content context about newest loads and their attribution fields, but does not mention limit/pagination behavior or not-found handling.

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?

The description is a single compact sentence that front-loads the resource and return fields with no filler. Its fragment style is terse but not wasteful.

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?

For a simple read-by-ID tool with rich annotations and full schema coverage, the description covers the main return shape. It leaves the relationship to list_pixels and the limit parameter implicit, making it adequate but not fully complete.

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%, with both pixel_id and limit documented in the schema. The description mentions 'newest loads' but adds no syntax, constraints, or defaults beyond what the schema already provides, so the baseline 3 applies.

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 identifies a single pixel plus its newest load metadata (page, browser, language, platform), which is specific enough for an agent to know the resource and returned content. It does not explicitly distinguish itself from list_pixels or get_page, so it stops short of a 5.

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?

No guidance is given on when to choose get_pixel over list_pixels or get_page; the only cue is 'One pixel', which implies single-ID lookup. No exclusions, prerequisites, or alternatives are stated.

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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