unsubscribeCancel a subscription by id. Ownership is enforced — you can only cancel your own subscriptions. The row is deactivated (not deleted) so its historical events stay available via recent_alerts.
| Name | Required | Description | Default |
|---|---|---|---|
| id | Yes | Subscription id (uuid) returned by subscribe. |
Changes observed during successful MCP inspections. Dates show when Glama detected each change.
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Goes beyond annotations by disclosing that the row is deactivated, not deleted, and historical events remain available via recent_alerts. Also explicitly mentions ownership enforcement, adding behavior context that annotations don't cover.
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 concise sentences, front-loaded with the primary action, and no filler words. Every clause provides valuable information.
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 simple one-parameter tool with no output schema, the description covers the action, ownership constraint, and side effects sufficiently. The reference to recent_alerts ties it to related context.
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 100% with the id parameter well described as a UUID returned by subscribe. The description doesn't add significant extra meaning beyond the schema, so baseline score of 3 is appropriate.
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 action 'Cancel a subscription by id' with a specific verb and resource. It distinguishes itself from siblings like subscribe and list_subscriptions by focusing on cancellation.
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?
Provides clear context: ownership is enforced and only own subscriptions can be canceled. It explains the effect on recent_alerts, helping the agent decide when to use this tool, though it doesn't explicitly name alternatives.
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.
The tool set contains multiple near-duplicate lookups: ask_pipeworx, ask_pipeworx_beta, and ask_pipeworx_grounded all do the same routing with minor variations, while deep_research and validate_claim also overlap in information retrieval. The two Pixabay search tools are distinct, but the abundance of overlapping data-lookup tools creates real ambiguity.
All names use snake_case, but the pattern is inconsistent: some are verb_noun (search_images, validate_claim), others are noun-based (entity_profile, pipeworx_feedback), and variants like ask_pipeworx_beta/grounded introduce ad-hoc suffixing. The naming does not follow a single predictable convention.
With 33 tools, the count is far excessive for a Pixabay server. Only 2 tools (search_images, search_videos) actually relate to Pixabay; the remaining 31 are unrelated Pipeworx data, Polymarket, memory, and subscription tools. The scope is a severe mismatch.
For a server named Pixabay, the surface is severely incomplete: only basic image/video search is provided, with no tool for fetching details, downloading, managing collections, or any other lifecycle operation. Meanwhile, the Pipeworx domain is over-covered, but that is irrelevant to the server's stated purpose.