Zerm MCP server

• Registry namedev.zerm/zermverified in the MCP registry

The registry name sits under zerm.dev. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-26
• Tools24
• Server calls itselfzerm
• Server version0.3.3
• Protocol version2025-06-18

On 2026-10-26 the server answered initialize and tools/list without a sign-in. First answer in 70 ms.

• Its tools do every use case we checked: persist key-value state between stateless agent runs; schedule outbound callbacks to verified origins; run live URL health checks and DNS queries.
• Checked on 2 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 2 so far
• What an agent can do with it3 of 3 use cases
• Answeredmeasuring2 of the 7 daily checks it takes to print a share
• Median first answer387 ms
• Space in an agent's context≈ 5,587 tokensthe definitions of all its tools (24), which an agent carries on every turn
• Tool definitionsA · 100 of 100
• Typed results0 of 24 toolsdeclared outputSchema: results come typed, read once

• Every tool passes all six checks.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• 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-encode objects), max 8192 bytes. TTL defaults to 30 days, max 90 days. Max 1000…

• 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=false if missing or expired.

• 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 out; if you only want the value to lapse on schedule, do nothing and let the…

• 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 fetch with kv_get: it returns key names with their expiry and last-update time…

• 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 back - if you have no endpoint of your own, timers are not usable yet. zerm…

• 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 - agents cannot wake themselves. Prerequisite: the target origin must already pass…

• 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 secret. Already-delivered or already-cancelled timers return cancelled=false.

• 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 unknown id.

• 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 result is registered, unregistered, unknown or invalid and names the source…

• 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 detection, and typo suggestions for common providers. Use it to validate an…

• 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, and access hints (login walls, bot blocks). Fresh at call time - use it to…

• 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, timezone-aware. Use this instead of guessing - cron semantics (DOM/DOW OR-logic…

• regex_test

  Execute a regex against test strings and return the ACTUAL matches: match text, indices, capture groups, named groups, and optional replacement output. Deterministic proof, not prediction - run this before shipping a pattern. Patterns run…

• 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. Deterministic when you pass a seed (same seed + schema = identical data). Formats: json…

• tz_convert

  Deterministic timezone conversion: convert a timestamp between IANA timezones with full DST awareness. Models routinely miscalculate DST transitions - this gives exact results. Returns the converted time, UTC offsets for both zones on…

• 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 year, and the timezone abbreviation. Transition timestamps are the first…

• 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 records. Use this for infrastructure audits, email deliverability setup…

• 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-requested capabilities get built. Free, no payment ever required.

• 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 token; the other gets acquired=false with retry_after_ms. Locks auto-expire…

• 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 released=false if the token is wrong or the lock already expired.

• counter_next

  Atomically increment a named counter and return the new value. Guaranteed unique, monotonically increasing integers across concurrent stateless runs - use it for sequence numbers, run IDs, or once-only ordering that agents cannot produce…

• 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 signup, no tunnel. This is the way to be notified of something when your process…

• 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 beginning. Each payload has its method, headers, body and arrival time. Set…

• 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 this is only for tearing down early.