Postbag

Form backend that routes: one tool per Postbag API operation, plus quickstart and explain.

Connector by postbag.devOfficial · Domain verified by the MCP Registry

IndexedAGPL-3.0Local (stdio)

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Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/postbag-dev-mcp

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Form backend that routes: one tool per Postbag API operation, plus quickstart and explain.

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools: 1 read · 0 write · 0 delete · 1 not yet classified
Secrets: 1 (API keys, tokens or passwords)
Install scripts: None found
Runs as: Node.js package

Tools by what they do 2

Read from the source code; the running server may list different tools.

Read 1 · Look things up without changing anything.

postbag_explain

Not yet classified 1 · We could not tell from the name and description.

postbag_quickstart

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

POSTBAG_API_KEY

Other settings (environment variables or headers).

POSTBAG_API_URL

Tools (2)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

postbag_explain
Returns Postbag's agent onboarding guide (the same content as GET /llms.txt): what Postbag is, the vocabulary (Form, Submission, Stream, Destination, Route, Delivery), and the handful of calls that matter. Call this first, before anything else, if you are not already familiar with Postbag — then call postbag_quickstart to create a working form.
postbag_quickstart
The one call to make first when setting up a new form: creates (idempotently, by name within project) the project if missing, the form, a destination for whichever of notify_email/telegram/webhook you pass, and a direct route between them — a working, routed form in a single call. Everything it does is also available as individual tools (forms_create, destinations_create, routes_create) if you need more control; this is a convenience, not a special path. The response's "next" array lists ready-to-use follow-up calls (e.g. adding a second destination), and "verify" gives you a test submission …

Signals

Stars: 0
Forks: 0
Open issues: 0
Last commit: Sep 21, 2026 (1 month ago)
Last release: Aug 21, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: dev.postbag/mcp
Version: 0.1.1
Auth: API key
Packages: npm @postbag/mcp
License: AGPL-3.0
Repository: github.com/faahim/postbag
Website: postbag.dev/for-ai-agents/
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry github-graphql

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Cite this page

Postbag MCP server. Agent Mart. https://agentmart.dev/connectors/postbag-dev-mcp (last updated 2026-10-24)