Connect Postagent and your agent gets 14 tools, among them check_postagent_updates, create_campaign_quote, create_card_checkout. It answers at https://api.postagent.sh/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 12 September 2026; the last check, on 24 October 2026, succeeded.
Print & mail PDF/HTML/Markdown/text/DOCX/images to US addresses; pay per call in x402 USDC on Base.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
check_postagent_updates | Fetches the live PostAgent agent manifest. Call this before using PostAgent in a new session, after reconnecting the MCP server, or when an installed PostAgent skill may be stale. If the installed skill is older than latestSkillVersion, rea Inputs: installedSkillVersion, installedMcpVersion |
create_campaign_quote | Quote ONE bulk send to MANY recipients (up to 500): a single template or static document, fulfilled through PostAgent's campaign workflow. Price is an inclusive customer-facing total, locked for 15 minutes. Payment is x402 ONLY. IMPORTANT — Inputs: documentId, name, from, recipients, options, payerWallet |
create_card_checkout | Creates a Stripe-hosted Checkout page for a locked quote and returns a `checkoutUrl` plus a `statusUrl`. Use this as the LAST-RESORT payment rail, when the payer is a human paying by credit card (the agent cannot complete card entry itself) Inputs: quoteId, webhookUrl |
create_letter | Upload and normalize a FINISHED, ready-to-mail document to PDF. Choose this when the content is final and IDENTICAL for every recipient — including when you mail the same letter to many people (just quote/pay once per recipient with the sam Inputs: format, content, contentBase64, url, filename |
create_mail_quote | Verifies the recipient and sender US addresses and locks a 15-minute USDC price for a documentId. Does not charge or mail anything. Returns a `paymentUrl` (a per-quote x402-payable URL); the preferred way to actually mail the letter is for Inputs: documentId, from, to, options, mergeVariables |
create_postcard_art | Upload ONE side of a postcard (front or back) as single-page PDF, PNG, or JPEG artwork. The file is stored VERBATIM — no page-size normalization and no reserved address zone — so you are responsible for the correct trim size plus bleed: 4x6 Inputs: format, contentBase64, url, filename |
create_postcard_quote | Verifies the recipient and sender addresses and locks a 15-minute USDC price for mailing a postcard built from two postcard_art documents (front + back, uploaded via create_postcard_art). Sizes: 4x6 (default), 6x9, 6x11 — postcards always p Inputs: frontDocumentId, backDocumentId, from, to, options |
create_template | Upload a REUSABLE template containing `{{field}}` placeholders (e.g. `Dear {{name}},` or `Balance due: {{amount}}`). Choose this ONLY when the content must vary per recipient (mail merge) — recipient count is irrelevant, so a single persona Inputs: format, content, contentBase64, url, filename |
get_campaign_status | Returns a campaign's validation/sending progress: status (validating | sent | partial | failed), recipient counts (total / validated / failed), and a failures report URL when some recipients could not be validated. Polling this endpoint als Inputs: campaignId |
get_mail_job_status | Returns normalized status, carrier/tracking/proof data, and tracking events for a previously created job. Inputs: jobId |
pay_mail_with_shared_payment_token | Autonomous, no-browser FIAT payment for a locked quote using a Stripe Shared Payment Token (SPT / Machine Payments Protocol). Use this when the agent can mint an SPT on the buyer's behalf and wants to pay by card/wallet without a human in a Inputs: quoteId, sharedPaymentToken, webhookUrl, userConfirmed |
prepare_mail_payment | Returns the x402 PAYMENT-REQUIRED challenge for a locked quote so an x402-capable wallet client can sign it. No payment is taken at this step. Probes the canonical per-quote pay URL (`/v1/quotes/:quoteId/pay`). The preferred way to actually Inputs: quoteId |
submit_paid_mail_job | Detached-signature fallback for x402 wallets that can emit a standalone PAYMENT-SIGNATURE header. THE PRIMARY/RECOMMENDED PATH is for the agent's wallet to pay the quote's `paymentUrl` in-band (e.g. `npx awal@latest x402 pay <paymentUrl>`); Inputs: quoteId, paymentSignature, webhookUrl, userConfirmed |
verify_address | Standalone paid address verification — no mail is sent. Checks whether an address is deliverable and returns the standardized form (US: CASS with ZIP+4; international: per-country matching). Costs a small flat USDC fee per call via x402 (a Inputs: name, line1, line2, city, state, zip |
Every block below points at https://api.postagent.sh/mcp. Pick your client and copy.
claude mcp add --transport http postagent https://api.postagent.sh/mcp
{
"mcpServers": {
"postagent": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://api.postagent.sh/mcp"]
}
}
}{
"mcpServers": {
"postagent": {
"url": "https://api.postagent.sh/mcp"
}
}
}{
"servers": {
"postagent": {
"type": "http",
"url": "https://api.postagent.sh/mcp"
}
}
}{
"context_servers": {
"postagent": {
"url": "https://api.postagent.sh/mcp"
}
}
}{
"mcpServers": {
"postagent": {
"serverUrl": "https://api.postagent.sh/mcp"
}
}
}{
"mcpServers": {
"postagent": {
"url": "https://api.postagent.sh/mcp"
}
}
}name: Postagent
version: 0.0.1
schema: v1
mcpServers:
- name: Postagent
type: streamable-http
url: https://api.postagent.sh/mcp{
"mcpServers": {
"postagent": {
"httpUrl": "https://api.postagent.sh/mcp"
}
}
}{
"mcpServers": {
"postagent": {
"type": "http",
"url": "https://api.postagent.sh/mcp"
}
}
}{
"mcpServers": {
"postagent": {
"url": "https://api.postagent.sh/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fapi.postagent.sh%2Fmcp&type=streamable_http&id=postagent&name=Postagent
It answered our last check on 24 October 2026 in 276 ms. Over 6 checks since 12 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
14, as returned by the server's own tools/list on 23 September 2026: check_postagent_updates, create_campaign_quote, create_card_checkout, create_letter, create_mail_quote, create_postcard_art, create_postcard_quote, create_template, and 6 more.
It answered our last check on 24 October 2026 in 276 ms. Over 6 checks since 12 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://api.postagent.sh/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: tech.interpretai. Endpoint host: api.postagent.sh. ARD identifier: urn:air:tech.interpretai:mcp:PostAgent.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.