Free instant verification of live BTC spot price and M2M feed status ($0.00 USDC). Endpoint: https://johngarp.click/api/v1/free-teaser
This tool declares no required parameters. Add optional parameters from the input schema as needed.
{
"id": 1,
"jsonrpc": "2.0",
"method": "tools/call",
"params": {
"arguments": {},
"name": "get_free_market_teaser"
}
}| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Changes observed during successful MCP inspections.
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It does add real behavioral context — that no payment is required ($0.00 USDC) and that results are 'instant' — which tells an agent no auth/charging step is needed. It says nothing about rate limits, whether the spot price is cached or delayed, or what the 'M2M feed status' actually conveys.
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?
Two short sentences with the core capability front-loaded. The raw endpoint URL (https://johngarp.click/api/v1/free-teaser) is not actionable for an MCP caller and is mildly wasted space, which keeps it from a 5.
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 zero-param tool with no output schema, the description should describe the shape of what comes back, and 'BTC spot price and M2M feed status' is only loosely specified — no units, quote currency, or notion of what 'feed status' means. It is adequate to select the tool but thin for interpreting the result.
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 tool takes zero parameters, so there is no parameter semantics to add; the baseline of 4 applies. Schema coverage is 100% and additionalProperties is false, so there is nothing an agent could misconfigure.
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 states a specific resource (live BTC spot price plus M2M feed status) and a specific property of the operation (free, instant verification). It is markedly narrower than the sibling tools (base DEX radar, crypto pulse, deep market report), though it never explicitly says so — the differentiation comes only from the 'free teaser' framing and the BTC-only scope.
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?
There is no guidance on when to call this versus get_crypto_pulse or get_deep_market_report, and no exclusions. The only implicit signal is the '$0.00 USDC' cost, which an agent could infer means 'use this for a cheap sanity check before the paid siblings', but nothing states that.
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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