Comet Messenger Service
REMOTE · AGENTS.COMETMESSENGER.DELIVERY
Chicago same-day courier: live delivery quotes; account holders book and track runs.
Available components
Last scanned (8 hours ago)
Scores higher than 57% of remote servers
Reachable. Last reached 18 Oct 2026.
Category Workflow Automation
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security69
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 404, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability56
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1199 tokens (~299/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management20
- Stability observed for 6 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage97
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 89% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 18 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 14 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 12 Oct 26 64
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 18 Oct 2026 · Probed https://agents.cometmessenger.delivery/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=agents.cometmessenger.delivery | CN=YR2,O=Let's Encrypt,C=US | 5 Oct 2026 | 3 Jan 2027 | RSA 4096 | SHA256-RSA | 526b4630ba8df0557b8a2d4a7ae3df1057c |
| SANs: agents.cometmessenger.delivery | ||||||
| CN=YR2,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | 4ebd24947e24d394802d84a52fd5b319 |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of agents.cometmessenger.delivery. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| delivery. | present | 60874 | 8 | Verified |
| cometmessenger.delivery. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://agents.cometmessenger.delivery/mcp | Verified | 200 | |
| http (plaintext) | http://agents.cometmessenger.delivery/mcp | Inconclusive | 404 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
book_delivery Book a Comet delivery (account holders) ~633
Book a same-day courier delivery on a Comet account. Call first without confirm to get a preview (price, vehicle, pickup time); show it to your user; then call again with the same details and confirm=true to place the order. Returns the Comet order number. Needs the client's Comet account key (Authorization: Bearer cmt_...). Account holders get one from Comet at (312) 786-2288.
| Name | Type | Req | Description |
|---|---|---|---|
| confirm | boolean | – | false/omitted = preview only (price and details, nothing booked). true = place the order. Always show the preview to your user before confirming. |
| dropoff_city | string | – | City (default Chicago) |
| dropoff_contact | string | – | – |
| dropoff_name | string | yes | Company or person receiving the delivery |
| dropoff_notes | string | – | Instructions for the courier at drop-off |
| dropoff_phone | string | – | – |
| dropoff_state | string | – | Two-letter state (default IL) |
| dropoff_street | string | yes | Drop-off street address, e.g. '300 N LaSalle St' |
| dropoff_suite | string | – | Suite / floor at drop-off |
| dropoff_zip | string | yes | ZIP code |
| notify_email | string | – | Email for the order confirmation and delivery notice |
| ordered_by | string | – | Name of the person the agent is acting for |
| package_type | string | – | Default envelope |
| pickup_city | string | – | City (default Chicago) |
| pickup_contact | string | – | – |
| pickup_name | string | – | Company or person at pickup. Omit pickup fields entirely to pick up at the account's own office. |
| pickup_notes | string | – | Instructions for the courier at pickup |
| pickup_phone | string | – | – |
| pickup_state | string | – | Two-letter state (default IL) |
| pickup_street | string | – | Pickup street address, e.g. '300 N LaSalle St' |
| pickup_suite | string | – | Suite / floor at pickup |
| pickup_zip | string | – | ZIP code |
| pieces | integer | – | Number of pieces (default 1) |
| reference | string | – | Client reference / matter number for the invoice |
| reference2 | string | – | – |
| round_trip | boolean | – | True when the courier returns to the pickup (default false) |
| service | string | yes | Streak (fastest, about 1-2 h), Priority (about 2-3 h) or Standard (about 4-6 h). Only the services on the account are accepted. |
| vehicle | string | – | Vehicle wanted; 'auto' (default) picks from the weight. A heavier load is moved up to the vehicle it needs. |
| weight_lb | number | – | Total weight in pounds. Picks the vehicle when none is given. |
| when | string | – | 'now' (default) or a pickup time in Chicago time today or tomorrow, e.g. '2026-10-13T09:00'. Further ahead: call the office. |
| Name | Type | Req | Description |
|---|---|---|---|
| account | string | – | – |
| dropoff | string | – | – |
| error | string | – | – |
| estimated_price | string | – | List-rate estimate; the account's own rate applies on the invoice |
| message | string | – | – |
| ok | boolean | yes | – |
| order_number | string | – | Comet / Xcelerator tracking number once entered, e.g. '516.101226' |
| pickup | string | – | – |
| pickup_time | string | – | – |
| placed | boolean | – | True only when a real order was created |
| preview | boolean | – | – |
| request_id | string | – | – |
| service | string | – | – |
| status | string | – | – |
| vehicle | string | – | – |
No examples provided.
get_quote Get a Comet delivery price ~333
Price a same-day courier delivery in the Chicago area with Comet Messenger Service (since 1976). Returns live prices for Streak (fastest), Priority and Standard service, and the vehicle used. Quotes only - nothing is booked. Account holders' agents can book with book_delivery; everyone else books by calling (312) 786-2288 or at https://cometmessenger.delivery.
| Name | Type | Req | Description |
|---|---|---|---|
| dropoff_city | string | – | City (default Chicago) |
| dropoff_state | string | – | Two-letter state (default IL) |
| dropoff_street | string | yes | Drop-off street address, e.g. '300 N LaSalle St' |
| dropoff_zip | string | yes | ZIP code |
| pickup_city | string | – | City (default Chicago) |
| pickup_state | string | – | Two-letter state (default IL) |
| pickup_street | string | yes | Pickup street address, e.g. '300 N LaSalle St' |
| pickup_zip | string | yes | ZIP code |
| pieces | integer | – | Number of pieces (default 1) |
| round_trip | boolean | – | True when the courier returns to the pickup (default false) |
| vehicle | string | – | Vehicle wanted; 'auto' (default) picks from the weight. A heavier load is moved up to the vehicle it needs. |
| weight_lb | number | – | Total weight in pounds. Picks the vehicle when none is given. |
| when | string | – | Pickup time, Chicago time, e.g. '2026-10-05T10:00'. Optional; used to flag after-hours and weekend pricing. |
| Name | Type | Req | Description |
|---|---|---|---|
| book_by_phone | string | – | – |
| book_online | string | – | – |
| company | string | – | – |
| currency | string | – | – |
| error | string | – | Present when ok=false |
| is_booking | boolean | – | – |
| message | string | – | – |
| ok | boolean | yes | – |
| pieces | integer | – | – |
| requested_vehicle | string | – | – |
| round_trip | boolean | – | – |
| services | array | – | – |
| timing_note | string | – | – |
| upgraded | boolean | – | – |
| vehicle | string | – | – |
| vehicle_label | string | – | – |
| vehicle_note | string | – | – |
| weight_lb | number | – | – |
No examples provided.
order_status Track a Comet order ~95
Where an order on the account is: booked, picked up, delivered (with who signed and when) or cancelled. Needs the client's Comet account key (Authorization: Bearer cmt_...). Account holders get one from Comet at (312) 786-2288.
| Name | Type | Req | Description |
|---|---|---|---|
| order_number | string | yes | Comet tracking number, e.g. '516.101226', or the request_id returned by book_delivery |
| Name | Type | Req | Description |
|---|---|---|---|
| error | string | – | – |
| message | string | – | – |
| ok | boolean | yes | – |
| orders | array | – | – |
No examples provided.
recent_orders List recent Comet orders ~76
The account's latest orders with their status. Needs the client's Comet account key (Authorization: Bearer cmt_...). Account holders get one from Comet at (312) 786-2288.
| Name | Type | Req | Description |
|---|---|---|---|
| active_only | boolean | – | Only orders not yet delivered |
| limit | integer | – | How many (default 10) |
| Name | Type | Req | Description |
|---|---|---|---|
| error | string | – | – |
| message | string | – | – |
| ok | boolean | yes | – |
| orders | array | – | – |
No examples provided.
How do I install the Comet Messenger Service MCP server?
Comet Messenger Service is a hosted endpoint at https://agents.cometmessenger.delivery/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · agents.cometmessenger.delivery
claude mcp add --transport http delivery-cometmessenger-courier 'https://agents.cometmessenger.delivery/mcp'
What is the Comet Messenger Service MCP server?
Comet Messenger Service is an MCP server listed in the public MCP registry as delivery.cometmessenger/courier. Chicago same-day courier: live delivery quotes; account holders book and track runs. This page covers its hosted endpoint (https://agents.cometmessenger.delivery/mcp).
Is the Comet Messenger Service MCP server safe to use?
Comet Messenger Service scores 67 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Comet Messenger Service MCP server expose?
Comet Messenger Service exposes 4 tools: get_quote, book_delivery, order_status, recent_orders. Their descriptions and schemas cost roughly 1,137 tokens of context every time the server is loaded.
Does the Comet Messenger Service MCP server require authentication?
No. We connected to Comet Messenger Service without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Comet Messenger Service MCP server still maintained?
Comet Messenger Service is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.