Google News RSS headlines. Params: { q?, hl?, gl?, ceid?, limit? } (x402: 0.001 USDC per call)
HTTP equivalent: GET /x402/news-headlines Payment: x402 protocol — send X-PAYMENT header with base64 payment payload, or X-API-Key / X-Owner-Key / Bearer token to bypass.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations are minimal (only a title), so the description must carry the burden. It discloses payment requirements, cost, and authentication methods, which is valuable. However, it does not state whether the operation is read-only, mention rate limits, or describe the response format. This is a partial disclosure, not a full one.
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?
The description is brief and front-loads the core purpose. It includes cost, HTTP mapping, and payment info without excessive verbosity. However, the layout is a bit list-like, but it is still efficient and scannable.
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?
Given the lack of an output schema and empty parameter schema, the description should explain return values and parameter semantics. It does neither. It mentions parameters but not their meaning, and gives no hint about the response structure (e.g., JSON, list of headlines). The payment details are well covered, but the operational details are incomplete.
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?
The schema is empty with additionalProperties true, so it provides no parameter documentation. The description lists parameter names (q, hl, gl, ceid, limit) but does not explain their meanings, types, or allowed values. An agent would not know what 'hl' or 'ceid' represent, making this insufficient.
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 identifies the tool as fetching Google News RSS headlines, which is a specific, distinct resource. The HTTP equivalent and payment details further clarify the operation. It is immediately obvious what this tool does and how it differs from a generic web search or crypto news tool.
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?
No explicit guidance is given on when to use this tool versus sibling tools like web_search, crypto_news, or web_fetch. The description provides no exclusions or suggested contexts, leaving the agent without criteria for selection.
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.
Multiple tool pairs are exact duplicates (e.g., wallet_analysis/wallet_analyzer, honeypot_check/rugpull_detector, defi_yield/defi_yield_rates) with identical descriptions, and many overlapping scanners (squeeze_scanner variants). An agent cannot reliably distinguish these tools.
Names are all snake_case, but conventions vary wildly: some are resource names (btc_price), some are actions (list_magnets), some are generic utilities (calculator), and duplicates use different naming patterns for the same function (wallet_analysis vs wallet_analyzer). No consistent verb_noun or resource_action pattern.
139 tools is an extreme count for any MCP server, far exceeding the 50+ threshold. The scope is a grab-bag of unrelated domains (crypto, FDA, SEC, utilities, web scraping), suggesting no curation.
The set is a shallow pile of read-only queries and utilities with no lifecycle management for any one domain. Many sub-areas have only one or two tools, and duplicates occupy slots where distinct operations should be. The lack of a clear domain makes completeness impossible to assess, but the surface is redundant rather than comprehensive.