Server implements 6 well-named tools with mostly complete schemas and descriptions. Tool names follow verb_noun pattern (get-alerts, create-silence, delete-silence). Parameter descriptions are present for all parameters across all tools. However, there are critical gaps: (1) Output schemas are not formally documented, responses are returned as JSON text without structured schema declarations, forcing LLMs to parse unstructured output. (2) No parameter constraints (enums, min/max) are defined despite opportunities (e.g., 'active' is boolean but default behavior is unclear; 'isRegex' on matchers lacks validation). (3) Error handling returns plain text error messages without recovery guidance or error classification. (4) No support for pagination despite tools returning lists (get-alerts, get-silences, get-alert-groups could return hundreds of items, but no limit/offset parameters exist). (5) Tool descriptions are adequate (30-60 chars) but lack context on when to use each tool vs. similar ones (e.g., when to use get-alerts vs. get-alert-groups). (6) The create-silence and delete-silence tools lack dry-run or confirmation steps despite being destructive operations. Average tool description length is ~45 chars (within baseline 34-392 range), but descriptions lack recovery hints and dependency context.
No output schema documentation. Tools return JSON as unstructured text ('type: text') rather than structured objects. LLMs cannot parse response fields reliably and must reason about response structure, wasting tokens and increasing hallucination risk.
Missing pagination parameters (limit, offset, page, cursor). get-alerts, get-silences, and get-alert-groups return lists without pagination controls. Returning 100+ items as JSON text will exhaust context windows and degrade LLM reasoning.
Destructive operations (create-silence, delete-silence) lack dry-run, confirmation, or user consent mechanisms. Agents can irreversibly silence alerts or delete silences without approval. No isError flag or confirmation-request pattern used.
create-silencedelete-silence
Recommendations
Document output schemas formally. Define response objects with typed fields (e.g., { fingerprint: string, alertname: string, severity: string, status: { state: string, silenced: boolean, inhibited: boolean }, labels: object }). This enables LLMs to understand response structure without parsing text.
Add pagination to list tools. Introduce limit (default 20, max 100) and offset parameters to get-alerts, get-silences, and get-alert-groups. Return a total_count field and next_offset if more results exist.
Implement confirmation pattern for destructive operations. create-silence and delete-silence should return { content, requires_confirmation: true } on first call, requiring an explicit confirm=true parameter to execute. This prevents accidental alert suppression.
Enhance error messages with recovery guidance. Instead of 'Error fetching alerts: <message>', return: '{ "isError": true, "content": [{"type": "text", "text": "No alerts found. Try calling get-alert-groups to see available groups, or check that Alertmanager is running at <url>."}]}' Include actionable next steps for each error type.
Add parameter constraints using Zod. Define: silenced/inhibited/active as boolean with .default(false); filter as string with .regex() for Alertmanager filter syntax; startsAt/endsAt with ISO8601 validation; isRegex with clear .describe() about regex syntax. This prevents invalid input.
Clarify tool purpose in descriptions. Rename or enhance: get-alerts: 'Retrieve current alerts with optional filtering. Use this for monitoring active, silenced, or inhibited alerts. Returns a flat list.'; get-alert-groups: 'Group alerts by common labels. Use this to see alert clusters and group-level statistics.' get-alert-details: 'Fetch full metadata for a specific alert by fingerprint. Use this after get-alerts to see extended labels, annotations, and status info.'
Error responses lack recovery guidance. All tools return plain text errors (e.g., 'Error fetching alerts: <message>'). LLMs receive no guidance on whether to retry, call a different tool, or ask the user. No error classification (retryable/user-fixable/fatal).
Tool descriptions lack context on when to use each tool. get-alerts, get-alert-details, and get-alert-groups all retrieve alert data but descriptions don't clarify the differences or use cases. LLMs may call wrong tool.
Missing dependency hints in descriptions. No guidance like 'Call get-alerts first to find a fingerprint, then pass it to get-alert-details.' Agents may not understand multi-step workflows.
get-alert-details
Add dependency hints to descriptions. get-alert-details description should include: 'First call get-alerts to find an alert fingerprint, then pass it here for detailed info.'
Consider returning only essential fields in responses. The current format includes all Alertmanager fields (generatorURL, silencedBy array, inhibitedBy array). For chat use, return: fingerprint, alertname, severity, summary, description, status.state, status.silenced, status.inhibited. Strip internal arrays and URLs.
Add timeout and retry guidance in descriptions. Note: 'Calls to Alertmanager may timeout (10s default). If you see a timeout error, retry after a brief pause.' This sets expectations for network reliability.
Document the Alertmanager URL configuration. Parameter description or tool description should note: 'Requires ALERTMANAGER_URL environment variable (default: http://localhost:9093).' This guides deployment.