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Magic 8 Ball

by io.github.pipeworx-io

Scan Dependency

scan_dependency
Read-onlyIdempotent

Composite "should I add this npm package to my project" check in ONE call — fans out across deps.dev (license + advisories + version history) and bundlephobia (gzipped/minified bundle size, dependency count, ESM/tree-shake support). Use whenever an agent asks "is X safe / popular / small" or "what does adding lodash cost me". Returns a summary block (is_latest, license, published_at, advisory_count, bundle_kb_min, bundle_kb_gz, dependency_count, has_esm, tree_shakeable), per-advisory detail, links, and a list of recent alternative versions. NPM ecosystem only in v1; PyPI / Maven / Cargo / Go fall under deps.dev:version directly. Partial failures degrade gracefully — bundlephobia's first measurement on a new version can take 5-30s; sources_failed will list it if it times out, the rest still returns.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
packageYesnpm package name. Scoped packages (e.g. "@types/node") are accepted.
versionNoSpecific version to check (e.g., "18.3.1"). Defaults to the latest published version when omitted.

TDQS

A4.8/5.0
Behavior5/5

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

Annotations already mark it as read-only, idempotent, and non-destructive. The description adds specific details: fans out to external sources, partial failures degrade gracefully, and bundlephobia's first measurement can take 5-30s. No contradictions.

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 thorough but somewhat long. Every sentence is informative, but could be trimmed slightly for brevity while retaining all key points.

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 complexity (composite tool with external sources, no output schema), the description fully explains the return value structure, failure behavior, and ecosystem limitations. It covers everything an agent needs.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description adds value by clarifying that scoped packages are accepted and version defaults to latest. This pushes to a 4.

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 that the tool performs a composite check for adding an npm package, covering license, advisories, version history, and bundle size. It is specific to npm and distinguishes from sibling tools like deep_research.

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

Usage Guidelines5/5

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

Explicitly says 'Use whenever an agent asks "is X safe / popular / small" or "what does adding lodash cost me".' Also notes NPM-only in v1 and directs other ecosystems to deps.dev versions.

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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TDQS

A4.2/5.0
Disambiguation4/5

Most tools have clearly distinct purposes, but the three ask_pipeworx variants (standard, beta, grounded) share similar routing and could cause confusion for an agent. The memory tools and novelty tool are distinct. Overall, ambiguity is low.

Naming Consistency4/5

Tool names follow a consistent snake_case verb_noun pattern (e.g., ask_pipeworx, compare_entities, subscribe). Minor deviations like 'search_within' and 'magic_8_ball_ask' do not break the pattern. High consistency.

Tool Count3/5

With 32 tools, the server is on the heavier side for a single MCP server. However, given the broad domain coverage (financials, economics, prediction markets, etc.), each tool serves a distinct purpose. Bordering on too many, but justified by scope.

Completeness4/5

The tool surface covers a comprehensive range of data research operations: querying, deep research, entity profiling, comparisons, discovery, subscriptions, alerts, claim validation, and prediction market analysis. Minor gaps exist (no data modification tools), but they are out of scope for a query-oriented server.

Resources