flagship

A coordination layer for many concurrent Claude Code sessions, where each session works on part of a larger body of work. It keeps track of peer sessions and shares their findings and decisions.

In plain words
What is it for?
Use it to organize parallel coding work, assign or start work across sessions, route decisions for review, and distribute findings between peers.
Why use it?
It reduces duplicated discoveries and helps separate work across many active sessions without giving one session control over another.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add fledgeling-co/fledgeling-plugins
agentmods
npx agentmods add plugins/fledgeling-co/fledgeling-plugins/flagship
Clone the repo
git clone --depth 1 https://github.com/fledgeling-co/fledgeling-plugins

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

flagship scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/flagship/.claude-plugin/plugin.json · 7 lines

What it actually says

{
  "name": "flagship",
  "version": "1.6.5",
  "description": "Conduct many concurrent Claude Code sessions as one portfolio — the layer above ship-armada, for when the work is already spread across a dozen live sessions rather than waiting in one repo's backlog. Builds a roster of every peer session, learns what each owns, and coordinates them over SendMessage: hands out a capped heavy-work token derived from harbourmaster's measured berths rather than an invented number, batches their accumulated decisions through the perch R1–R5 router so only the operator's own axes reach the operator, routes judgement to defer's lanes after probing which are actually reachable, and propagates each session's findings to the others — which is the real return, because nine sessions independently found one tool's bug in a single evening and none knew about the others. Starts new work as a workflow, a subagent, or a fresh Ghostty tab using recover-claude-code's hardened mechanism, so a session can carry its own fleet. Holds the map and no authority: a conducting session cannot command a peer, cannot close a peer's channel to its user, and cannot relay an authorisation — all three were refused by ten sessions in one night and all three refusals were right.",
  "category": "development"
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 7 lines scan A 4a2d0f65c901

Subscribe to this mod's changes

flagship is a plugin published in the GitHub repository fledgeling-co/fledgeling-plugins (2 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.