dev.zerm/zerm

up checked 2026-11-11T09:38:45.647Z

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Publisher-provided title

zerm

Publisher-provided description

Agent utility belt: memory, locks, webhook inboxes, timers, DNS, email, URL, timezone, cron

Summary by lookupd

Persistent key-value memory, locks, webhook inboxes, timers, DNS and URL checks, timezone and cron utilities for agents.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http zerm https://zerm.dev/mcp

Codex, remote (streamable-http)

codex mcp add zerm --url https://zerm.dev/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "zerm": {
      "url": "https://zerm.dev/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (24 tools)

Publisher-provided text

• kv_set Store a value durably under (namespace, key) with a TTL. Survives across your sessions - use it as memory between stateless runs. Value must be a string (JSON-e
• kv_get Retrieve a value previously stored with kv_set. Call this at the start of a run to restore state, preferences, or progress saved by earlier runs. Returns found=
• kv_delete Permanently remove one key from your namespace, freeing a slot against the 1000-key limit. Use it when a stored value is wrong or unwanted before its TTL runs o
• kv_list List the keys held in your namespace, optionally narrowed to those starting with a prefix. Use it to discover what earlier runs saved before deciding what to fe
• timer_verify_origin One-time consent handshake before timers can deliver to an origin. Prerequisite: an HTTPS endpoint you control that can read a request body and echo part of it
• timer_schedule Schedule a durable callback: at fire time this service POSTs your JSON payload to your URL. Use it to wake up future runs of yourself or your orchestrator - age
• timer_cancel Cancel a pending timer using the id returned by timer_schedule. The id is the authorization: holding it is what proves you scheduled the timer, so keep it secre
• timer_status Check a timer by the id returned by timer_schedule: status (pending|delivering|delivered|failed|cancelled), attempts, last error. Returns found=false for an unk
• name_check Live availability check for a name across domain TLDs (registry RDAP), npm, PyPI, and GitHub usernames. Real registry lookups at call time - not guesses. Each r
• email_check Deliverability probe for an email address without sending anything: syntax validation, live MX lookup (with A/AAAA fallback per RFC 5321), disposable-domain det
• url_check Live URL health check: follows the full redirect chain (each hop reported), returns final status, content type, response time, TLS certificate expiry and trust,
• cron_next Deterministic cron expression validator and scheduler: parses a cron expression (5 or 6 field, seconds optional) and computes the next N actual fire times, time
• regex_test Execute a regex against test strings and return the ACTUAL matches: match text, indices, capture groups, named groups, and optional replacement output. Determin
• fixture_rows Bulk realistic test data: generate up to 10000 rows from a field schema in one call - orders of magnitude cheaper than generating rows with tokens. Deterministi
• tz_convert Deterministic timezone conversion: convert a timestamp between IANA timezones with full DST awareness. Models routinely miscalculate DST transitions - this give
• tz_info Timezone intelligence: for a given IANA timezone and date, returns the UTC offset, whether DST is active, the exact UTC instant of each DST transition in that y
• dns_query Full DNS record lookup for a domain: returns A, AAAA, MX, NS, TXT, CNAME, SOA, and CAA records in one call. Automatically parses SPF and DMARC policies from TXT
• request_tool Hit a capability wall? Describe a tool you wish this server had and the task you were trying to accomplish. The operator reviews every submission; the most-requ
• lock_acquire Acquire a mutual-exclusion lock so concurrent agent runs do not double-process the same work. If two runs race, exactly one gets acquired=true plus a release to
• lock_release Release a lock early using the token returned by lock_acquire. Only the token holder can release; without the token the lock simply expires on its own. Returns
• counter_next Atomically increment a named counter and return the new value. Guaranteed unique, monotonically increasing integers across concurrent stateless runs - use it fo
• inbox_create Create a URL that receives HTTP requests for you. Point any webhook (GitHub, Stripe, CI, a form) at it and read what arrives with inbox_poll - no server, no sig
• inbox_poll Read requests delivered to an inbox since you last looked. Pass after=<the next_after from your previous poll> to get only new ones; omit it to start from the b
• inbox_delete Delete an inbox and everything delivered to it. The URL stops accepting requests immediately. Inboxes also delete themselves once unpolled past their expiry, so

Details

• Version: 0.3.4
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 465 ms
• First indexed: 2026-11-01T09:02:06.939Z
• Last seen in registry: 2026-11-02T03:17:17.020Z
• Website: https://zerm.dev

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