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BACH-AI-Tools

Biztoc MCP Server

sources

Retrieve a list of available source IDs for news blocks, similar to those on biztoc.com. Use this to get sources for fetching stories.

Instructions

Lists all currently available {source_id}s. Equivalent of news blocks on biztoc.com. Note that certain proprietary blocks like Twitter or Stock Tickers are not available.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior4/5

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

No annotations are provided, so the description carries the transparency burden. It discloses that certain sources (proprietary blocks like Twitter/Stock Tickers) are not included. However, it does not detail output format, pagination, or performance characteristics.

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 with no extraneous information. It is front-loaded with the core purpose and followed by a notable limitation.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a parameterless tool with no output schema, the description covers the basic functionality and a key limitation. It could be enhanced by specifying the output type (e.g., list of strings) but overall is sufficient.

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?

The input schema has no parameters, so the description's mention of the output (available {source_id}s) adds semantic value. The baseline is 4 due to 100% schema coverage.

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 tool's action ('Lists all currently available {source_id}s') and provides a real-world analogy ('Equivalent of news blocks on biztoc.com'). It distinguishes from siblings by focusing on listing all source IDs rather than a specific source or topics.

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 description does not explicitly guide when to use this tool versus its siblings (news_latest, news_source, etc.). It mentions a limitation about proprietary blocks not being available, which is useful, but lacks direct comparison to alternatives.

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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