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. |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond annotations (destructiveHint=false), the description adds valuable behavioral context: the row is deactivated not deleted, so historical events remain available via recent_alerts. It also discloses the ownership authorization requirement, which is not inferable from 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?
Two sentences, front-loaded with the action. Each sentence provides essential information: the operation and the behavioral nuance. No waste 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 low-complexity tool with one parameter and no output schema, the description covers the key aspects: purpose, ownership, deactivation behavior, and where historical data stays visible. It is self-sufficient for an agent to invoke correctly.
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%, so the parameter 'id' is fully described as 'Subscription id (uuid) returned by subscribe.' The description only says 'by id' without adding new semantics, meeting the baseline for a well-documented parameter.
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 cancels a subscription by id, with a specific verb and resource. It distinguishes itself from siblings like subscribe and list_subscriptions by emphasizing ownership enforcement and deactivation (not deletion), which sets it apart from a generic delete operation.
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?
It provides clear context: cancel your own subscription by id. Ownership enforcement is explicitly stated, indicating when this tool cannot be used (others' subscriptions). It doesn't explicitly name alternatives, but the context is sufficient to know when to use it.
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.
Most tools have clearly distinct purposes, but there is some overlap among the numerous Pipeworx query and prediction market tools (e.g., polymarket_arbitrage vs. polymarket_edges vs. polymarket_fill_risk). Descriptions help differentiate them, so the ambiguity is minor.
Tool names use a mix of verb_noun patterns (e.g., list_subscriptions, validate_claim), phrases (ask_pipeworx, bet_research), and standalone nouns (pipeworx_feedback). While readable, the lack of a single consistent convention makes the set feel less cohesive.
33 tools is on the high side, with many highly specialized prediction market and Pipeworx management tools. The server's name 'emojihub' suggests a narrow focus, but the actual scope is much broader, making the count feel somewhat inflated for its apparent purpose.
The tool set covers a vast domain: factual data retrieval, company profiles, comparisons, claim validation, prediction market analysis, memory, subscriptions, and emoji lookup. Minor gaps exist (e.g., no direct tool for simple web search), but overall coverage is comprehensive.