A TypeScript implementation of a simple MCP server that exposes datetime information to agentic systems and chat REPLs
Nothing to run from here
PaperAgent — Send Physical Mail is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
93/100
tool-list score
8
tools declared
remote
at its publisher
—
calls last 7d
What it does
Mail one-off USPS letters from ChatGPT or Claude after you approve the preview and price. US only.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http paperagent-send-physical-mail-mcp https://paperagent.dev/mcp
# 2 — ask your agent for something these tools do
# get_pricing, validate_address, create_draft and 5 more
PaperAgent — Send Physical Mail costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
PAAll 1 server
paperagent1 server
1 category
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
Claude Codedeclared by this listing
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http paperagent-send-physical-mail-mcp https://paperagent.dev/mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it answers at its publisher’s own address: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it writes
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
What you approve
8 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
Return the published price list for mailing physical letters through USPS: the products on sale, what each one costs, how many pages it covers, and when sales tax applies. Amounts are in US cents. Every letter is one of these prices — there is no volume discount, no per-page charge and no colour printing — so quote the tier total and say New York sales tax is added, whatever the destination. Call
No parameter schema on file.
Check a US postal address and return it in the normalized form the envelope will be printed with, plus any warnings. The address is checked against the Google Address Validation service, which receives the address and nothing else. Use this before create_draft whenever the address came from a person rather than from an earlier tool result. Requires a complete street address: this does not look up,
| Parameter | Type | Required | Notes |
|---|---|---|---|
| address | object | yes | A complete US postal address. US domestic addresses only. |
Create a draft of a physical letter to be printed on paper and mailed through USPS, and return its draft_id, page count and total price. A letter is at most 6 printed pages, at the same price whatever its length: up to 3 pages print one-sided, 4 to 6 print on both sides. Write the body to fit, or split a longer document into two letters, because a body that renders to 7 or more pages is refused ra
| Parameter | Type | Required | Notes |
|---|---|---|---|
| to | object | yes | Who the letter is mailed to. |
| body_markdown | string | yes | The text of the letter, as plain text or Markdown. It must render to 6 printed pages or fewer — roughly 2,400 words of body text. |
| tier | string | no | Defaults to standard. Call get_pricing first and pass a tier it lists: standard is a plain First-Class letter. certified, certified_err, proof_of_mailing and registered are other products the current |
| colour | boolean | no | Omit this. The current price card prints every letter black & white, so passing true is refused rather than billed — call get_pricing for what it does sell. The field remains because letters priced on |
| from_address_id | string | no | Omit this. The account's own verified return address is used by default; only pass an id the account holder gave you. |
| body_file | object | no | A file the user attached, as the host delivers it. Not accepted yet — create_draft refuses an attachment and asks for the letter as body_markdown text. |
Change the recipient, body, tier or colour of a draft that has not been sent, and re-price it. Returns a new page count and a new quote, so the previous total is void — state the new total to the user before sending. The 6-printed-page maximum applies to the new body as well: a replacement that renders to 7 or more pages is refused and the draft is left as it was. This creates nothing and mails no
| Parameter | Type | Required | Notes |
|---|---|---|---|
| draft_id | string | yes | The draft_id returned by create_draft. |
| to | object | no | A complete US postal address. US domestic addresses only. |
| body_markdown | string | no | Replaces the whole letter text. It must render to 6 printed pages or fewer — roughly 2,400 words of body text. |
| tier | string | no | Which product to buy. Call get_pricing first and pass a tier it lists: standard is a plain First-Class letter. certified, certified_err, proof_of_mailing and registered are other products the current |
| colour | boolean | no | Omit this. The current price card prints black & white only; true is refused. |
| from_address_id | string | no | — |
Return a link to the rendered PDF of a draft together with its page count and current total price. Refreshes the stored price quote when pricing has changed. Use this to show the user exactly what will be printed and exactly what it costs before calling send_letter. The total in the response is the number send_letter requires as confirm_total_cents. This does not create an order or mail a letter.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| draft_id | string | yes | — |
Create an order for a real, physical letter through the United States Postal Service. It returns a payment link; no paper is printed, postage is bought, or letter is mailed until payment completes. Use this whenever the user asks to mail, post, send by post, or physically send a letter, notice, or document to a street address. This is NOT email — use an email tool for email. US domestic addresses
| Parameter | Type | Required | Notes |
|---|---|---|---|
| draft_id | string | yes | The draft_id returned by create_draft or preview_draft. |
| confirm_total_cents | integer | yes | The exact total.amount_cents from the current quote, including sales tax. Say the total out loud to the user first; if it does not match the live quote this call fails and no letter is sent. |
| idempotency_key | string | yes | A key you generate once for this send. Retrying with the same draft_id and the same key returns the original letter instead of mailing a second one. |
Return the current state of one letter: where it is, the date it goes to USPS, and the estimated delivery date. USPS does not scan plain First-Class letters at delivery, so a Standard letter ends at an expected delivery date and never reports delivery — do not tell the user a letter arrived unless the status itself says so. This creates nothing and mails nothing.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| letter_id | string | yes | — |
Return this account's letters, newest first, with the status, mail date and total for each. Use this to answer questions about what has already been sent. This creates nothing, changes nothing and mails nothing.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| limit | integer | no | Defaults to 20. |
| starting_after | string | no | The next_cursor from the previous call, to read the following page. |
Free
$0 forever
- Every tool — any call limit is its publisher’s, not ours
- No card, and mcprush charges nothing for it
- Runs at its publisher’s own address — this marketplace is not in the path
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install PaperAgent — Send Physical Mail or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
ATool-list grade · score 93 / 100
Release 0.1.0 · scanned 20 Oct 2026
Graded from the tools this server lists, not from its source code.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
Threat score100
Client score93
Findings0 threat · 1 capability
Capabilitymoderate
Coveragemanifest
Verificationnot in this report
Surface digestf5e99a4ab4644a3f2f098434574051e0ce6c36e66708a2f67f7474b680893cf3
Score vectorthreat 100 → client 93
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | moderate | capability blast radius (moderate) — client exposure if the model is manipulated | −3 |
| coverage-honesty | manifest | inspection depth (manifest) — how much of the target the scan could see | −4 |
score = clamp(round(threatScore − E_cap − E_ver − E_cov), 0, 100). No model, no opinion, no network call at scoring time: the same methodology version against the same bytes always produces this number, and every line above is a field of the report rather than a summary of it.
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
The scan read each tool’s name, description, input schema and annotations exactly as the server listed them the last time it answered us; no code was reviewed. We ask the server again about once a month, and a list that changed is graded again.
Tool surfaceread
Implementation sourcenot available
Package metadatanot available
Live transportnot available
The implementation source was not read — this reflects the declared tool metadata only.
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. moderate is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| get_pricing | no tags | |
| validate_address | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| create_draft | state-write | state-write: declares readOnlyHint: false |
| update_draft | state-write | state-write: declares readOnlyHint: false |
| preview_draft | state-write | state-write: declares readOnlyHint: false |
| send_letter | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| get_letter_status | no tags | |
| list_letters | no tags |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
flow-1
Untrusted input can drive an external action even though no sensitive source is exposed.
Supply chain and provenance
Integrityfirst-seen
Surface digestf5e99a4ab4644a3f
Scanned2026-10-20
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
This is an address its publisher runs: which release it serves is theirs to choose, so there is nothing here to pin. The history below is for reading; the current release on file is 0.1.0.
0.1.0
undated
latestNo release note was published with this version.
—
no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish PaperAgent — Send Physical Mail can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.