supergravity-mcp
Server Quality Checklist
Latest release: v0.1.2
- Disambiguation5/5
The two tools have completely distinct purposes: one sends a task to the Antigravity app, the other reads its quota. There is no overlap or ambiguity.
Naming Consistency5/5Both tools follow a consistent verb_noun pattern with underscores: delegate_to_antigravity and get_antigravity_quota. The naming is predictable and clear.
Tool Count3/5With only 2 tools, the server feels thin. While it covers the essential operations for the Antigravity app, the scope is limited and could benefit from additional tools for a more complete interface.
Completeness3/5The server provides the core operations (delegate a task and check quota), but it lacks tools for status checks, error recovery, or model selection. Some notable gaps exist.
Average 4.3/5 across 2 of 2 tools scored.
See the Tool Scores section below for per-tool breakdowns.
- No community issues in the last 6 months
- 12 commits in the last 12 weeks
- No stable releases found
- No critical vulnerability alerts
- No high-severity vulnerability alerts
- No code scanning findings
- CI status not available
This repository is licensed under MIT License.
This repository includes a README.md file.
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How is the quality score calculated?
The overall quality score combines two components: Tool Definition Quality (70%) and Server Coherence (30%).
Tool Definition Quality measures how well each tool describes itself to AI agents. Every tool is scored 1–5 across six dimensions: Purpose Clarity (25%), Usage Guidelines (20%), Behavioral Transparency (20%), Parameter Semantics (15%), Conciseness & Structure (10%), and Contextual Completeness (10%). The server-level definition quality score is calculated as 60% mean TDQS + 40% minimum TDQS, so a single poorly described tool pulls the score down.
Server Coherence evaluates how well the tools work together as a set, scoring four dimensions equally: Disambiguation (can agents tell tools apart?), Naming Consistency, Tool Count Appropriateness, and Completeness (are there gaps in the tool surface?).
Tiers are derived from the overall score: A (≥3.5), B (≥3.0), C (≥2.0), D (≥1.0), F (<1.0). B and above is considered passing.
Tool Scores
- Behavior3/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behaviors. It clarifies that it drives the UI (not internals) and requires installation/login. However, it does not mention error behaviors, timeouts, or whether the operation is safe/idempotent. Adequate but leaves gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
The description is very concise: two sentences plus a short requirement statement. No filler, every sentence adds essential information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool has 3 parameters, no output schema, and one sibling, the description is largely complete. It covers the tool's function, prerequisites, and how it differs from the sibling. However, it does not specify the format of the reply (e.g., plain text, JSON), which would be helpful.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters3/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the description adds marginal value beyond the schema. The main description does not elaborate on parameters beyond what is in the schema. Baseline score of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it sends a task to the Antigravity app and returns the reply. It specifies it drives the UI (types into chat box, reads response), distinguishing it from the sibling tool get_antigravity_quota, which only checks quota.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines4/5Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explains when to use the tool (to send a task) and mentions prerequisites (app installed and signed in). It does not explicitly list when not to use it, but the sibling tool context and the model parameter's reference to getAntigravityQuota() provide adequate guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
- Behavior4/5
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Discloses that it is a read operation, details two separate pools with weekly and 5-hour limits. No annotations provided, so description carries full burden; it is transparent about behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Conciseness5/5Is the description appropriately sized, front-loaded, and free of redundancy?
Four sentences, each adds value: action and source, pool details, usage guidance. No redundant text.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Completeness4/5Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Complete for a zero-parameter tool without output schema. Explains what, where, pools, limits, and when to use. Minor lack of return value details, but adequately informative.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Parameters4/5Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
No parameters exist (schema coverage 100%), so no additional parameter info needed. Baseline 4 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Purpose5/5Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it reads remaining model quota and specifies the two separate pools (Gemini and Claude+GPT). The resource and action are unambiguous.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Usage Guidelines5/5Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly tells when to use: before delegating after a 'send button is disabled' error, or to decide model family with room. Distinguishes from sibling tool 'delegate_to_antigravity'.
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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