Ducklab MCP Server
A full-cycle software development harness that is multi-LLM by default and honest by construction.
People who need developer tools tools inside Claude, Cursor, VS Code, or another MCP client. The project is written in Go.
VERIFIED ACTIVE
LAST COMMIT 2026-08-24 · ★ 3 · #123 OF 139 MAINTAINED DEVELOPER TOOLS · VERIFIED 2026-08-25
Apache-2.0 · Go servers · how we verify → /methodology
01 · Install Ducklab
Claude Desktop
Settings → Extensions → Install, then select the https://github.com/jrullan/ducklab/releases/download/v0.7.0/ducklab-mcp.mcpb .mcpb bundle02 · Evidence
Security posture
What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.
runs as Claude Desktop extension (.mcpb bundle)
repo age created 2026-07-22 - young repo, little track record yet
license Apache-2.0 - declared in the repository
registry namespace io.github.jrullan is GitHub-verified and matches the repo owner
03 · What Ducklab can do
Prose above is summarized from the project's README and registry record - no invented capabilities.
Latest releases
v0.8.0 · 2026-08-24
--- · release · v0.8.0 · v0.7.0 · 23 · --- · v0.8.0 · At launch · The ducklings you pick for a run now actually sit in the seats you picked. The launcher used to map your roster positionally, so a custom roster could…
v0.7.0 · 2026-08-23
Adopt surveys: see what the survey actually found · Proposal cards and the run view now show the survey's inventory and flag any unaccounted coverage - parts of the codebase the survey couldn't account for - so you can…
v0.6.3 · 2026-08-22
Queued runs: Two runs aimed at a one-slot local endpoint used to serialize invisibly at inference time; now the second run queues honestly, with a reason that names the provider and the runs holding its slot. The…
04 · Who maintains Ducklab
ducklab is maintained by jrullan. It's the only MCP server we track from this author; the repo dates to Jul 2026.
05 · Facts
- repository
- github.com/jrullan/ducklab
- category
- developer tools - ranked #123 of 139 actively-maintained developer tools servers as of 2026-08-25.
- release cadence
- 7 releases in the last 90 days (latest 2026-08-24)
- registry
- io.github.jrullan/ducklab (active, first published 2026-08-23)
- packages
- mcpb:https://github.com/jrullan/ducklab/releases/download/v0.7.0/ducklab-mcp.mcpb
06 · Ducklab FAQ
What is Ducklab?
A full-cycle software development harness that is multi-LLM by default and honest by construction.
Is Ducklab still maintained?
Yes - as of 2026-08-25, its last commit was 2026-08-24 and it shipped 7 releases in the last 90 days. We re-verify nightly.
07 · Alternatives to Ducklab
Alternatives to Ducklab
Maintained developer tools servers if Ducklab isn't the fit.
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- Claude Code Explorer MCP Explore the Claude Code CLI source - browse tools, commands, search code, and more. ★ 3,263 · 2026-04-22
- Server for WinDbg Crash Analysis A Model Context Protocol server for Windows crash dump analysis using WinDbg/CDB ★ 1,533 · 2026-08-22
Pairs well with
Servers that cover what Ducklab doesn't - only shown when the pairing reason fits the companion.
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