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Emoji Oracle

by io.github.pipeworx-io
OverviewDiscussionsAdmin

Emoji Oracle Consult

emoji_oracle_consult
Read-onlyIdempotent

Ask the Emoji Oracle a question and receive a cryptic emoji prophecy with vibe rating. Optionally request interpretation of the emoji sequence. Returns emoji sequence, vibe rating (1-10), and optional text explanation.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
questionYesYour question for the Emoji Oracle
interpretNoIf true, the Oracle provides a mystical interpretation
emoji_countNoNumber of emojis (1-5, default 3)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
prophecyNo
questionNo
vibe_checkNo
interpretationNoMystical text interpretation of the emoji sequence (if interpret=true)

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed6 schema fields changed
    • removedOutput schema / properties / emojis
      Removed value: -{
-  "description": "Cryptic emoji sequence prophecy from the Oracle",
-  "type": "string"
-}
    • addedOutput schema / properties / prophecy
      Added value: +{
+  "type": "string"
+}
    • addedOutput schema / properties / question
      Added value: +{
+  "type": "string"
+}
    • addedOutput schema / properties / vibe_check
      Added value: +{
+  "type": "string"
+}
    • removedOutput schema / properties / vibe_rating
      Removed value: -{
-  "description": "Vibe rating on a scale of 1-10",
-  "type": "number"
-}
    • removedOutput schema / required
      Removed value: -[
-  "emojis",
-  "vibe_rating"
-]
  2. Added
  3. Removed
  4. First observed

TDQS

A4.3/5.0
Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so safety is covered. The description adds useful behavioral details: it returns an emoji sequence, vibe rating (1-10), and optional text explanation. No contradiction with annotations.

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 sentences, front-loaded with the core purpose, and contains no redundant wording. It efficiently conveys the tool's function and optional feature.

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?

Output schema exists, annotations cover the safety profile, and the description covers behavior and return format. Nothing an agent needs to call it correctly is missing; even the default emoji count is in the schema.

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% for all 3 parameters, so the schema already documents question, interpret, and emoji_count. The description mentions optional interpretation but does not add significant meaning beyond the schema. Baseline of 3 is appropriate.

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 clearly states the verb 'Ask' and the resource 'Emoji Oracle', and describes the output (emoji prophecy, vibe rating, optional interpretation). It distinguishes itself from siblings by its unique playful nature; no other tool offers emoji-based answers.

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 description provides clear context (use when you want an emoji prophecy) but does not explicitly mention alternatives or when not to use it. Since the tool is unique and self-explanatory, this is acceptable, but it lacks explicit exclusions or sibling references.

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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