SERVER

postbag

Rank #4,152

io.github.parasxos/postbag

Local Claude Code and Codex sessions on one machine exchange letters through native inputs.

4 versions

11 GitHub stars

by parasxos (3 servers)View repository ↗

First listed

Sep 30, 2026

Last publish date

Oct 3, 2026

PURPOSE

What you can do with postbag

postbag is a Model Context Protocol (MCP) server published by parasxos. It ranks #4,152 of 162,973 active servers on MCP Toplist, and its repository has 11 GitHub stars. postbag is listed across 2 registries — Official MCP and Glama, with 4 tracked versions. It was first listed on Sep 30, 2026 and most recently updated on Oct 3, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What postbag can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using postbag

DeclaredNo credentialsNo credentials declared

The registry listing declares no required environment variables or authentication. This is declared metadata, not a verified install — the repository README is the authority.

Declared by Glama, last synced Oct 29, 2026. Not independently verified by MCP Toplist.

Declared in the registry install config

POSTBAG_CODEX · optional

INSTALLATION AND FIRST TASK

Connect postbag and confirm it works

Python package (PyPI)

claude mcp add postbag -e "POSTBAG_CODEX=<your POSTBAG_CODEX>" -- uvx --with "postbag[mcp]==2.3.0" postbag mcp

Replace each placeholder with your own value before saving.

Python package (PyPI)

[mcp_servers.postbag]
command = "uvx"
args = ["--with", "postbag[mcp]==2.3.0", "postbag", "mcp"]

[mcp_servers.postbag.env]
POSTBAG_CODEX = "<your POSTBAG_CODEX>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "mcpServers": {
    "postbag": {
      "command": "uvx",
      "args": [
        "--with",
        "postbag[mcp]==2.3.0",
        "postbag",
        "mcp"
      ],
      "env": {
        "POSTBAG_CODEX": "<your POSTBAG_CODEX>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "mcpServers": {
    "postbag": {
      "command": "uvx",
      "args": [
        "--with",
        "postbag[mcp]==2.3.0",
        "postbag",
        "mcp"
      ],
      "env": {
        "POSTBAG_CODEX": "<your POSTBAG_CODEX>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "servers": {
    "postbag": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "--with",
        "postbag[mcp]==2.3.0",
        "postbag",
        "mcp"
      ],
      "env": {
        "POSTBAG_CODEX": "<your POSTBAG_CODEX>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "mcpServers": {
    "postbag": {
      "command": "uvx",
      "args": [
        "--with",
        "postbag[mcp]==2.3.0",
        "postbag",
        "mcp"
      ],
      "env": {
        "POSTBAG_CODEX": "<your POSTBAG_CODEX>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "mcpServers": {
    "postbag": {
      "command": "uvx",
      "args": [
        "--with",
        "postbag[mcp]==2.3.0",
        "postbag",
        "mcp"
      ],
      "env": {
        "POSTBAG_CODEX": "<your POSTBAG_CODEX>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by parasxos

View all parasxos servers →

No task-specific alternatives are catalogued for postbagyet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: Sep 30, 2026
Latest version published: Oct 3, 2026
Version history: 4 versions tracked (below)
Requirements evidence: Declared by Glama, last synced Oct 29, 2026. Not independently verified by MCP Toplist.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Oct 29, 2026

Registry sightings

Official MCP ↗listed since Oct 2, 2026 · still listed
Glama ↗listed since Oct 2, 2026 · still listed

Do you maintain postbag? to correct or enrich this profile.

VERSIONS

Available versions (4)

Version	Published
2.3.0	Oct 3, 2026
2.2.2	Oct 2, 2026
2.2.1	Oct 2, 2026
2.2.0	Oct 1, 2026

STANDING

#4,152of 162,973 active serversTop 5%

Ranks ahead of 158,821 of 162,973 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.parasxos%2Fpostbag.svg)](https://mcptoplist.com/server/io.github.parasxos%2Fpostbag)

HTML

<a href="https://mcptoplist.com/server/io.github.parasxos%2Fpostbag"><img src="https://mcptoplist.com/badge/io.github.parasxos%2Fpostbag.svg" alt="MCP Toplist: Top 5% of 162,973" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains postbag?: postbag is maintained by parasxos, which publishes 3 MCP servers (14 total versions) tracked on MCP Toplist.
Is postbag listed on the Official MCP Registry?: Yes — postbag is listed on the Official MCP Registry, alongside Glama.
How many versions does postbag have?: MCP Toplist tracks 4 versions of postbag, most recently published on Oct 3, 2026.
Where can I find the source code for postbag?: The source code for postbag is hosted at github.com/parasxos/postbag.

Used in projects

Do you run this server?

Community projects list the MCP servers behind real agents and apps. Publish yours and this page will link to it.

EXPLORE

All MCP Servers Official MCP Servers GitHub MCP Servers Best MCP Servers Most Active MCP Servers New MCP Servers Best New MCP Servers