Comet Messenger Service

Comet Messenger Service, Inc. is a Chicago same-day courier and delivery company operating since 1976, offering 24/7 dispatch, bike messengers in the Loop, car-to-truck delivery across Chicagoland, medical and legal couriers, TSA-certified airport delivery, court courtesy copies and concierge errands such as address checks and property watch. It runs an AI dispatcher named Haley and publishes an agent endpoint (agents.cometmessenger.delivery) advertising an MCP server and an OpenAPI description for quoting, booking and order status, with booking and orders gated by account keys.

Comet Messenger Service publishes 4 API contracts indexed on the APIs.io network, including Book API, Orders API, Quote API, and 1 more. Tagged areas include Company, Couriers, Same-Day Delivery, Logistics, and Chicago.

The Comet Messenger Service catalog on APIs.io includes 1 Spectral governance ruleset.

Comet Messenger Service’s developer surface includes engineering blog, API reference, authentication, pricing, support, signup flow, developer portal, and 19 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

37.8/100 thin Agent 24/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers 2 Agent Skills

Company Couriers Same-Day Delivery Logistics Chicago Delivery MCP

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 37.8/100 · thin

Contract Quality 9.1 / 19

Developer Ergonomics 7.1 / 15

Access Clarity 6.7 / 15

Operational Transparency 0.0 / 10

Contract Governance 1.6 / 9

Discoverability 4.9 / 8

Regulatory Posture 1.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →
Contract Quality scores 48.5 — up to +12.9 composite points Ask about this →
Access Clarity scores 44.7 — up to +11.1 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/cometmessenger-delivery/apis.yml: open an issue on github.com/api-evangelist/cometmessenger-delivery to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

Comet Messenger Service Book API

The Book API from Comet Messenger Service — 1 operation(s) for book.

Comet Messenger Service Orders API

The Orders API from Comet Messenger Service — 1 operation(s) for orders.

Comet Messenger Service Quote API

The Quote API from Comet Messenger Service — 1 operation(s) for quote.

Comet Messenger Service Status API

The Status API from Comet Messenger Service — 1 operation(s) for status.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Comet Messenger Service MCP Server

Remote MCP server at agents.cometmessenger.delivery over streamable HTTP requiring an API key; 4 tools listed.

MCP SERVER

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

quote-and-book-a-delivery

AGENT SKILL

track-orders

AGENT SKILL

Comet Messenger Service API pricing

Prices published by Comet Messenger Service.

Plan	Price
Eyes on the Ground	$65 drive-by, $95 walk-in
Property Watch (weekly)	weekly ($55 a visit)
Property Watch (monthly)	monthly ($75 a visit)
Property Watch (once)	once ($65)
Witnessed Delivery	delivery at standard rates plus $35
Shelf Checks	$45 the first store, $25 each extra store on the same run, up to 10
Rental Help - key handoff	key handoffs ($45)
Rental Help - lockbox swap	lockbox swaps ($45)

All 10 plans, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Comet Messenger Service Plans Pricing

10 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Comet Messenger Service Rate Limits

0 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Comet Messenger Service API Rules

38 rules · 36 error-severity 1 warn-severity 1 info-severity

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Comet Messenger Service Mcp Overlay

5 actions · update · cometmessenger-delivery-openapi.yml

DERIVED

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Comet Messenger Service Authentication

http · 1 scheme

SECURITY

Comet Messenger Service Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

Comet Messenger Service Agentic Access

4 operations · 2 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Login

SignUp

SignUp

Portal

Portal

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Conventions

Lifecycle

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

Company 4

The organization behind the API

Blog

Blog

Website

Website

LinkedIn

Facebook

Facebook

Other 3

Properties that don't map to a standard resource type

Overlay

Overlay

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: cometmessenger-delivery
name: Comet Messenger Service
description: Comet Messenger Service, Inc. is a Chicago same-day courier and delivery company operating since 1976, offering
  24/7 dispatch, bike messengers in the Loop, car-to-truck delivery across Chicagoland, medical and legal couriers, TSA-certified
  airport delivery, court courtesy copies and concierge errands such as address checks and property watch. It runs an AI dispatcher
  named Haley and publishes an agent endpoint (agents.cometmessenger.delivery) advertising an MCP server and an OpenAPI description
  for quoting, booking and order status, with booking and orders gated by account keys.
url: https://artifacts.apis.io/cometmessenger-delivery/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (modular-v1; was harvest)
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  probe_state: covered
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-04'
modified: '2026-11-04'
tags:
- Company
- Couriers
- Same-Day Delivery
- Logistics
- Chicago
- Delivery
- MCP
tags_raw:
- Company
- Courier
- Same-Day Delivery
- Logistics
- Chicago
- Delivery
- MCP
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://cometmessenger.delivery/images/Comet_Chicago_Sky_hero.webp
common:
- type: AgenticAccess
  url: agentic-access/cometmessenger-delivery-agentic-access.yml
- type: Plans
  url: plans/cometmessenger-delivery-plans-pricing.yml
- type: Spectral
  url: rules/cometmessenger-delivery-rules.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Conventions
  url: conventions/cometmessenger-delivery-conventions.yml
- type: Lifecycle
  url: lifecycle/cometmessenger-delivery-lifecycle.yml
- type: Conformance
  url: conformance/cometmessenger-delivery-conformance.yml
- type: Overlay
  url: overlays/cometmessenger-delivery-mcp-overlay.yaml
- type: LLMsTxt
  url: llms/cometmessenger-delivery-llms.txt
- type: ToolCrosswalk
  url: mcp/cometmessenger-delivery-tool-crosswalk.yml
- type: MCPServer
  url: mcp/cometmessenger-delivery-mcp.yml
- type: Hosts
  url: hosts/cometmessenger-delivery-hosts.yml
- type: Vendors
  url: vendors/cometmessenger-delivery-vendors.yml
- type: Blog
  url: https://blog.cometmessenger.delivery/
- type: APIReference
  url: https://cometmessenger.delivery/llms.txt
- type: Authentication
  url: authentication/cometmessenger-delivery-authentication.yml
- type: DomainSecurity
  url: security/cometmessenger-delivery-domain-security.yml
- type: Website
  url: https://cometmessenger.delivery/
- type: Pricing
  url: https://cometmessenger.delivery/rate-sheet.html
- type: Support
  url: https://cometmessenger.delivery/comet-faqs.html
- type: Login
  url: https://cometmessenger.delivery/login.html
- type: SignUp
  url: https://cometmessenger.delivery/new-account.html
- type: Portal
  url: https://cometmessenger.delivery/portal.html
- type: Documentation
  url: https://cometmessenger.delivery/docs/Comet_Brochure.pdf
- type: LinkedIn
  url: https://www.linkedin.com/company/comet-messenger-service
- type: Facebook
  url: https://www.facebook.com/CometMessengerService
apis:
- aid: cometmessenger-delivery:cometmessenger-delivery-book-api
  name: Comet Messenger Service Book API
  description: The Book API from Comet Messenger Service — 1 operation(s) for book.
  humanURL: https://agents.cometmessenger.delivery/
  baseURL: https://agents.cometmessenger.delivery
  tags:
  - Book
  properties:
  - type: OpenAPI
    url: openapi/cometmessenger-delivery-book-api-openapi.yml
- aid: cometmessenger-delivery:cometmessenger-delivery-orders-api
  name: Comet Messenger Service Orders API
  description: The Orders API from Comet Messenger Service — 1 operation(s) for orders.
  humanURL: https://agents.cometmessenger.delivery/
  baseURL: https://agents.cometmessenger.delivery
  tags:
  - Order
  tags_raw:
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/cometmessenger-delivery-orders-api-openapi.yml
- aid: cometmessenger-delivery:cometmessenger-delivery-quote-api
  name: Comet Messenger Service Quote API
  description: The Quote API from Comet Messenger Service — 1 operation(s) for quote.
  humanURL: https://agents.cometmessenger.delivery/
  baseURL: https://agents.cometmessenger.delivery
  tags:
  - Quotes
  tags_raw:
  - Quote
  properties:
  - type: OpenAPI
    url: openapi/cometmessenger-delivery-quote-api-openapi.yml
- aid: cometmessenger-delivery:cometmessenger-delivery-status-api
  name: Comet Messenger Service Status API
  description: The Status API from Comet Messenger Service — 1 operation(s) for status.
  humanURL: https://agents.cometmessenger.delivery/
  baseURL: https://agents.cometmessenger.delivery
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/cometmessenger-delivery-status-api-openapi.yml
x-coverage:
  state: covered
  reason: identity-verified
  detail: Name, description, image and pointers taken from the company site; blog.cometmessenger.delivery is an empty Ghost
    "Coming soon" install and was not recorded. No terms/privacy pages linked from the homepage.
  evidence:
  - url: https://cometmessenger.delivery/
    status: 200
  - url: https://agents.cometmessenger.delivery/
    status: 200
  - url: https://cometmessenger.delivery/rate-sheet.html
    status: 200
  - url: https://cometmessenger.delivery/comet-faqs.html
    status: 200
  - url: https://cometmessenger.delivery/portal.html
    status: 200
  - url: https://cometmessenger.delivery/login.html
    status: 200
  - url: https://cometmessenger.delivery/new-account.html
    status: 200
  - url: https://cometmessenger.delivery/docs/Comet_Brochure.pdf
    status: 200
  - url: https://www.linkedin.com/company/comet-messenger-service
    status: 200
x-enrichment:
  date: '2026-11-04'
  status: enriched
  artifacts_added: 27
  pass: modular-v1
  engine: identity=anthropic,contract=anthropic,surfaces=anthropic,docs=anthropic,regulatory=anthropic

Comet Messenger Service API — frequently asked questions

Does Comet Messenger Service have an API?

Yes. APIs.io lists 4 APIs from Comet Messenger Service, including Comet Messenger Service Book API, Comet Messenger Service Orders API and Comet Messenger Service Quote API, and 1 more.

Is there an OpenAPI specification for the Comet Messenger Service API?

Yes. APIs.io indexes 4 OpenAPI specifications for Comet Messenger Service, each linked for download from this page.

How do I authenticate with the Comet Messenger Service API?

Comet Messenger Service uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Comet Messenger Service Authentication.

How much does the Comet Messenger Service API cost?

Comet Messenger Service publishes its prices; its Eyes on the Ground plan is $65 drive-by, $95 walk-in as of 2026-11-04. APIs.io lists 10 pricing plans for Comet Messenger Service, with each plan's price, limits and inclusions under Pricing on this page.

Does Comet Messenger Service have an MCP server?

Yes. APIs.io lists 1 MCP server for Comet Messenger Service: Remote MCP server at agents.cometmessenger.delivery over streamable HTTP requiring an API key; 4 tools listed.

Is the Comet Messenger Service API ready for AI agents?

Comet Messenger Service has a Kin Score of 37.8 out of 100 (thin) and an Agent Readiness score of 24.1 (agent-aware), scored by API Evangelist on 2026-11-13.

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