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AgentParcel 3.4.0

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@cursor cursor released this 26 Oct 05:11
v3.4.0
642f55f
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cursoragent Cursor Agent
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AgentParcel 3.4.0 - release notes

macOS package is untested on real Mac hardware (beta). It is the same Python program as the Linux package. Work through TESTING-CHECKLIST.md on a Mac before relying on it.

Project site: https://agentparcel.net.

AgentParcel is an independent project. It is not affiliated with, endorsed by, or derived from any other project named ZipSplitter, and it does not use any of that project's code. ZipSplitter was only our internal working name; all AgentParcel code was written from scratch for this project. Before release we researched that working name, found another existing project already using it, and switched to AgentParcel for the public release. Leftover _zipsplitter_* marker files and ZIPSPLITTER_* environment-variable fallbacks come from our own development builds, not from that other project. They remain only for backward compatibility.

Package Platform Status
AgentParcel-3.4.0-windows.zip Windows 10/11 (PowerShell 5.1, included in Windows) PowerShell source is in the package. The 3.4.0 PowerShell changes were not executed on Windows in this build
AgentParcel-3.4.0-linux.zip Linux with Python 3.9+ (Tk optional) unit tests for byte split, verify, rebuild.py, and cancel; MCP tools checked
AgentParcel-3.4.0-macos.zip macOS 11+ with Python 3.9+ UNTESTED - needs testing on a real Mac (same Python program as Linux; not run on Mac hardware)

Check a download: sha256sum -c SHA256SUMS.txt (Linux), shasum -a 256 -c SHA256SUMS.txt (macOS),
Get-FileHash .\AgentParcel-3.4.0-windows.zip (Windows PowerShell).

What's new

  • 3.4.0: split any file. Byte-level split of any file type into numbered parts under a size cap, rebuilt to the exact original (SHA-256). Window checkbox, and MCP tool split_any_file. rebuild accepts zip part sets and byte-split sets.
  • 3.4.0: verify. Before rebuilding, check that every part is present and that each checksum matches the manifest. Missing and corrupt parts are named. Window button, and MCP tool verify.
  • 3.4.0: rebuild without AgentParcel. Every split folder includes HOW-TO-REBUILD.txt and a dependency-free rebuild.py (Python 3 standard library only). The text file includes a PowerShell equivalent for a byte split. rebuild.py reassembles a byte-split file and checks it. For zip parts it verifies part-file checksums; AgentParcel still reassembles the zip.
  • 3.4.0: Stop. The window stays responsive during split and rebuild. Stop cancels the job, deletes partial output from that run, and reports Cancelled. The MCP server honors client cancellation and does not leave a half-written output.
  • 3.3.x parts and manifests still work. _zipsplitter_* marker files and ZIPSPLITTER_* fallbacks are unchanged.
  • 3.3.1: the public name is AgentParcel. ZipSplitter was only our internal working name. AgentParcel is not affiliated with, endorsed by, or derived from any other project named ZipSplitter, and it does not use any of that project's code. All AgentParcel code was written from scratch for this project. New file names: AgentParcel.ps1/.bat, agentparcel.py,
    agentparcel_mcp.py, AgentParcel.command, agentparcel.sh, agentparcel.desktop, Install-Python-for-AgentParcel.bat,
    AgentParcel-apps.zip. MCP server name agentparcel, env var AGENTPARCEL_MCP_ROOTS (ZIPSPLITTER_MCP_ROOTS is still accepted, only as a compatibility fallback from our own development builds).
  • Parts from our own development builds still rebuild, and those builds still rebuild AgentParcel parts. AgentParcel ignores ZipSplitter-apps.zip; those older builds ignore AgentParcel-apps.zip. The on-disk _zipsplitter_* marker file names are unchanged on purpose, for backward compatibility with those builds only. They do not come from any other project named ZipSplitter.
  • 3.3.1: AgentParcel-apps.zip (the bundle sent with the parts) now includes LICENSE.txt.
  • One package per platform, each with an mcp/ folder (an MCP server for AI agents, with config
    snippets for Claude Desktop, Claude Code, Cursor and Codex CLI that fit that platform).
  • Python helpers: Install-Python-for-AgentParcel.bat (Windows, Python 3.15, per user, no admin),
    install-deps.sh (Linux), install-python-macos.sh (macOS, untested).
  • Python 3.15 (3.15.1, released 2026-10-21) is the recommended Python. 3.9+ still works.
  • The part format has not changed. Parts made with 3.x on any platform rebuild on any other.

Known limits / open items

  • Our development builds that still used the ZipSplitter working name only recognise AgentParcel-apps.zip by its marker file. If someone picks the bundle
    plus only some parts by hand in one of those older builds, it can wrongly report missing parts. Choosing the folder,
    any single part, or all parts works. AgentParcel itself recognises both bundle names.
  • macOS package: not yet run on a Mac (Gatekeeper prompts, the Tk look and the pkg install path are unverified).
  • The Windows Python installer helper was syntax-checked but not run on a real PC.
  • winget has no Python.Python.3.15 package yet (its submission is still open as of
    2026-10-25), so the helper falls back to the python.org installer.

License

AgentParcel License 1.0 (see LICENSE.txt). This is source-available, not OSI-approved open source,
because of its Equal Tier Availability condition. In plain English:

  • You may use, copy, modify, share and sell it, including commercially. Keep the license and copyright notice.
  • You may market it as an included feature.
  • If a product with several plans or tiers includes it, every tier that can use that kind of tool must get it on
    equal terms, free tier included. For the MCP server that means every tier with MCP/tool access; for the apps, every
    tier that can run local apps or scripts. It can't be reserved for a higher or paid tier, and its usage limits can't
    be stricter than those for comparable tools in that tier. A tier with no such access at all doesn't have to get it.
  • No warranty.
  • Licensing questions and permissions: https://chriskalkowski.com
  • Project site: https://agentparcel.net

Full history: CHANGELOG.md inside each package.

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