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Mail by Pony MCP

v0.3.0 changelog · 2

com.mailbypony/mail-by-pony

Print and mail real letters through USPS. Write, preview the exact printed proof, then pay or send.

transport:streamable-http tools:40

Target client

run in your project directory

claude mcp add --transport http mail-by-pony https://www.mailbypony.com/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

catalog

catalog

ui_diagnostic

ui diagnostic

list_drafts Read-only

list drafts

create_draft Mutating

create draft

get_draft Read-only

get draft

update_draft Mutating

update draft

list_address_references Read-only

list address references

upload_attachment Mutating

upload attachment

add_library_artwork Mutating

add library artwork

remove_attachment Mutating

remove attachment

archive_draft

archive draft

preview

preview

quote

quote

prepare_checkout

prepare checkout

get_checkout_preparation Read-only

get checkout preparation

checkout

checkout

create_payment_link Mutating

create payment link

list_orders Read-only

list orders

get_order Read-only

get order

reconcile_payment

reconcile payment

cancel_order Mutating

cancel order

request_status

request status

show_letter Read-only

show letter

get_connection_identity Read-only

get connection identity

get_proof Read-only

get proof

get_credit_balance Read-only

get credit balance

list_credit_transactions Read-only

list credit transactions

create_credit_topup Mutating

create credit topup

get_credit_topup Read-only

get credit topup

list_agent_grants Read-only

list agent grants

quote_for_send

quote for send

send_with_credits Mutating

send with credits

create_template Mutating

create template

list_templates Read-only

list templates

get_template Read-only

get template

delete_template Mutating

delete template

create_template_draft Mutating

create template draft

create_batch Mutating

create batch

get_batch Read-only

get batch

cancel_batch Mutating

cancel batch

All 40 tools, one page each

3 resources you attach as context

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.