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?
Annotations already indicate readOnlyHint=false, destructiveHint=false, and idempotentHint=true. The description adds valuable context: the row is deactivated but not deleted, and historical events remain available via recent_alerts. This explains the non-destructive behavior and the side effect clearly, going beyond what annotations alone convey.
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 two sentences and front-loads the action ('Cancel a subscription by id'). Each sentence earns its place: the second explains ownership enforcement and the deactivation side effect. No filler or redundancy.
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 core action, the ownership constraint, and the non-deletion behavior. It does not mention error cases or return values, but given the simplicity and schema coverage, it is sufficiently complete.
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 input schema already fully describes the 'id' parameter (including that it is the subscription id returned by subscribe), providing 100% coverage. The description only repeats 'by id' without adding new semantic meaning, so the 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 uses a specific verb and resource: 'Cancel a subscription by id.' It also clarifies the scope ('only cancel your own subscriptions') which distinguishes it from canceling others' subscriptions and from related tools like list_subscriptions and subscribe. The deactivation note further differentiates its effect from a pure delete.
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 implies when to use the tool (when you have a subscription id and want to cancel it) and mentions the ownership prerequisite, but it does not explicitly state when to use this over alternatives or exclude contexts. There is no direct comparison to subscribe or list_subscriptions, so the guidance is implied rather than explicit.
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.
Several tools overlap heavily: ask_pipeworx, ask_pipeworx_beta, and ask_pipeworx_grounded are near-identical routers, and the five polymarket_* tools all deal with prediction-market edge detection and filling risk. Memory and subscription tools are clear, but the data-access and research tools require careful reading to avoid selecting the wrong entry point.
All names use snake_case and many follow a verb_noun pattern such as search_universities and resolve_entity, but the set mixes product-prefixed names (polymarket_*, pipeworx_*), bare verbs (remember, recall, forget), and noun phrases (entity_profile, deep_research). The ask_pipeworx_beta suffix also introduces a naming convention not used elsewhere.
At 32 tools, the server exceeds the heavy threshold, and almost all tools are unrelated to the apparent 'universities' domain—only search_universities matches the server name. The count might suit a broad data-research platform, but it is poorly scoped for this server's stated identity.
For the domain implied by the server name, the surface is severely incomplete: only a name/country university search exists, with no university detail, ranking, program, admissions, or comparison coverage. Agents would dead-end immediately after finding a list of universities.