get_vertical_briefingFetch a stitched audio briefing of the top-25 trending articles in a single vertical from the last 24h. Premium — settles in USDC on Base via x402. Vertical must be one of the canonical 7 buckets: tech, finance, news, science, health, young_moms, yoga. First call without an X-Payment header returns the x402 challenge; sign + retry.
| Name | Required | Description | Default |
|---|---|---|---|
| vertical | Yes |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already signal readOnly, openWorld, idempotent, and non-destructive. The description goes further by disclosing the payment requirement, the x402 challenge on first call, the need to sign and retry, and the audio output format — behavioral details not present in annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Four dense sentences with no filler. The first sentence states the core function, followed by payment, validation, and authentication flow — each sentence serves a distinct purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with no output schema, the description explains what is returned (audio briefing), the query window (last 24h), the vertical constraint, the auth challenge, and the payment method. This is complete given the tool's complexity and rich annotations.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0%, but the description fully compensates by listing all 7 allowed vertical values (tech, finance, news, science, health, young_moms, yoga) and adding the canonical-bucket constraint. This directly aids parameter selection beyond the raw enum in the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool fetches a 'stitched audio briefing' of the top-25 trending articles for a single vertical over the last 24 hours. This specific verb+resource+scope distinguishes it from siblings like get_vertical_landscape and digest.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear usage context: it is premium (USDC on Base via x402), the vertical must be one of 7 canonical buckets, and the first call without X-Payment triggers a challenge-retry flow. However, it does not explicitly name alternatives or state when not to use this tool relative to sibling tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
Every tool has a clearly distinct purpose, with detailed descriptions that prevent ambiguity. Even similar tools like search_articles, search_declassified, and search_unified target different corpora, and the publisher tools are well-separated. No overlap that would confuse an agent.
All tool names follow a consistent verb_noun pattern with snake_case, using clear prefixes like get_, search_, subscribe_, publisher_, fm_, digest_, etc. The naming is predictable and systematic, making it easy for an agent to infer functionality.
At 37 tools, the count is higher than the typical 3-15 range for a coherent set, but the server covers a wide domain (content retrieval, podcast management, fund manager book, embedder network, etc.). Each tool earns its place, though the set could be slightly reduced by merging some rare-use tools.
The tool surface is comprehensive for the server's purpose—search, audio, subscriptions, publisher workflows, and special features like the Divergence Index. Minor gaps exist (e.g., no explicit unsubscribe tool, no article update/delete), but they are not critical for core workflows.