Postbye
A2A agent · postbye.com · found in a public list · checked since 2026-11-14
Live, agent card valid · latest check
https://postbye.com/.well-known/agent-card.json agent cardThe name is the registry's label, not ours. Not reviewed by a person. See 2 endpoints from postbye.com.
Our checks
An unpaid request daily, from eastern North AmericaLast 1 checks, oldest to newest; room for 29 more
1 passed, 0 failed, 29 not run.
Checked daily. Daily: 5 to 99 payers, and every new service until it has been probed 3 times.
Response times
| Window | Checks | Timeouts | Median | 90th | 95th | 99th | Fastest | Slowest |
|---|---|---|---|---|---|---|---|---|
| 24 hourssince 2026-11-14 | 1 | 0 | — | — | — | — | — | — |
| 7 dayssince 2026-11-14 | 1 | 0 | — | — | — | — | — | — |
| 30 dayssince 2026-11-14 | 1 | 0 | — | — | — | — | — | — |
Milliseconds, from eastern North America, timing fetching the agent card. Timeouts count at the 10000 ms limit. A dash means too few checks for that figure. As of . Definitions and method.
Details
Access
- Our latest check
- not observed: our check does not call the service itself
- Stated
- not stated
- Payment model
- not known
- Currency
- not known
"Nothing asked" describes one plain request, not every operation. Statements are claims, not our measurements. Definitions
Interface it declares
- Protocol
- A2A 0.3.0
- Features
- none declared
- Transports
- JSONRPC
- Accepts
- text/plain
- Returns
- application/jsontext/plain
- Skills
- company-lookup
As its agent card stated it at our check on (agent-card/3): a claim, not tested. Definitions
Links
What it states about itself, from its registry entry or package:
- Website: postbye.com
Pages we read:
- llms.txt: postbye.com/llms.txt, read
Its own links, from its llms.txt, under its own headings and names. These are its words, not ours:
About Postbye
- Postbye Reviews: What Customers Say
- Is Postbye legit? Certified mail, tracking, proof
- Mattie Guerra, Founder of Postbye
MCP server
- Postbye MCP Server for AI Assistants
- Install the Postbye MCP Server
- Postbye MCP Tools Reference
- Postbye MCP Examples
- Postbye MCP Server FAQ: Access, Data and Limits
- Connect the Postbye MCP Server: Claude, Cursor, ChatGPT, VS Code
Categories (30)
- Streaming & entertainment
- Gyms & fitness
- Phone & internet
- Security & identity
- VPN & privacy
- Software & apps
- Hosting & cloud
- Dating
- Meal kits & food boxes
- Food & grocery delivery
- News & magazines
- Subscription boxes
- Car insurance
- Life insurance
- Home insurance
- Health insurance
- Insurance & protection plans
- Education & learning
- Gaming
- Finance & credit
- Credit cards
- Memberships & clubs
- Charities & donations
- Health & wellness
- Rentals & leasing
- Pets
- Wine clubs
- Coffee
- Genealogy
- Home warranties
Site
Guides
- Membership cancellation: steps, letter and proof
- Cancel by Mail: Guides, Letters and Your Rights
- Visual guides: how to cancel, in slides and short videos
- Gym Membership Cancellation Laws: 29 States + DC
- Gym contract and automatic renewal laws by state
- Postbye guide articles
Free tools
- Free cancellation tools
- Cancellation deadline calculator: last day to mail
- Subscription cost calculator: yearly, 3-year cost
- Subscriptions tracker: list your recurring plans
How it works and help (26)
- How it works: cancel by certified mail
- Help center: letters, tracking and proof
- How to track your cancellation letter
- What delivery proof you get for your letter
- How long a cancellation by mail takes
- What we need to write your cancellation letter
- How we find and check company mailing addresses
- Is a mailed cancellation letter legally valid?
- Cancel Postbye Plus at any time on our cancel page
- Cancellation never received? 4 things to send
- Charged after your cancellation letter arrived
- Postbye refund: the money-back guarantee
- What is the POSTBYE charge on my statement?
- Correcting your details after you order
- Your privacy: what we keep and why
- Postbye customer service and phone number
- Ways to cancel a subscription, compared
- DoNotPay alternative to cancel subscriptions by mail
- Rocket Money alternative that cancels by certified letter
- What Is Unsubby? Delivery, Refunds, Plans Checked
- Postbye vs Xpendy: letters, send dates, refunds
- Mailform alternative for certified cancellation letters
- LetterStream alternative for cancellation letters
- Postbye vs PostalForm: cancellation letter by mail
- Postbye vs MailMyCancel: certified cancellation letters
- Best apps to cancel unwanted subscriptions: 8 ranked
Cancellation letter templates
- Cancellation Letter Template and Where to Mail It
- Cancellation letter templates by category and reason
Cancellation guides (21)
- Cancel Netflix
- Cancel Spotify
- Cancel Adobe
- Cancel Amazon Prime
- Cancel Hulu
- Cancel Disney+
- Cancel Planet Fitness
- Cancel YouTube Premium
- Cancel Peloton
- Cancel Apple Music
- Cancel Paramount+
- Cancel NordVPN
- Cancel Noom
- Cancel LinkedIn Premium
- Cancel LA Fitness
- Cancel Equinox
- Cancel Crunch Fitness
- Cancel Audible
- Cancel 24 Hour Fitness
- Cancel Anytime Fitness
- Most popular company cancellation guides
Links only (links/3): we follow none of them when showing this page, and a link is not a recommendation. How links are chosen.
Listing
In the capability tree: Other (not placed in a branch yet) (primary). Placed by three checks by a small AI model: placed, found blind from its tasks, and verified against its own text (placement-ai/7, tree/3) on 2026-11-14. Wrong place? Tell us.
In the index only: does not meet every one of our listing criteria (listing-criteria/6): ✗ what it does is unclear to our placement; ✓ its latest check passed.
Recent probes
| When | Result | Time to headers |
|---|---|---|
cloudflare:EWR |
Live, agent card valid HTTP 200 | 244 ms |
What these figures do not show
- A passing check means the agent card was served and well formed (agent-card/3). It does not show that the agent completes tasks, what it charges, or whether it needs an account.
- Listed in the A2A Registry. Its description is not republished, and its uptime figures are not shown: we measure the card ourselves.
- Limited evidence: monitored for under 1 day (less than 30).
Something wrong here?
Operate this service and want it reviewed, corrected or removed? Email hello@agentservicedirectory.com or use the opt-out page. A wrong place in the tree? Tell us.
Machine-readable: /api/v1/services/cand_16dc78e16968e8bf