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.
npx agentmods add skills/alphaelements/handoff-mcp/handoff-session-loopnpx skills add alphaelements/handoff-mcp --skill handoff-session-loopgit clone --depth 1 https://github.com/alphaelements/handoff-mcpWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00051 | $0.01236 |
| Opus 5 | $0.00026 | $0.00618 |
| Sonnet 5 | $0.00010 | $0.00247 |
| Haiku 4.5 | $0.00005 | $0.00124 |
Grade A, and why
handoff-session-loop 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 2d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Handoff Session Loop
Use this skill only after an explicit user request. It is a Codex-native
orchestrator: do not invoke Claude Code commands, Claude workflows, or files
from plugin-task-loop/.
Read references/manager.md before selecting work. Before each delegation,
read the matching role template in references/ and replace every
<placeholder> with the task-specific facts. The templates define the
required inputs and report format; the Manager remains accountable for all
Handoff state changes.
Prerequisites and safety
- Confirm that the Handoff MCP tools are available. If they are not, explain
that the project must first configure Handoff MCP; do not emulate its task
state by editing
.handoff/files. - In non-interactive
codex exec, confirm that Handoff write calls are explicitly permitted before selecting work. Setmcp_servers.handoff.default_tools_approval_mode = "auto"for the controlled invocation, or use the interactive CLI. If Handoff write calls are cancelled, do not delegate work or leave tasksin_progress; report the configuration blocker instead. - Work only in the current project. Never push, publish, deploy, run a migration, or perform a destructive operation without the user's explicit approval.
- The root agent is the Manager. It retains responsibility for task state and final verification; child agents must not mark a task done merely because their local work appears complete.
- Treat every child-agent failure, timeout, or missing report as a failed gate, never as a pass.
Start and select work
- Call
handoff_load_contextfor the current project. If it asks for an active session, immediately callhandoff_save_contextwithsession_status: "active", inherited context, a concrete next action, and a checklist item. - Call
handoff_list_tasks. Select only tasks that aretodo, have no unfinished dependencies, and have a clear, independently writable file scope. Inspect each candidate withhandoff_get_taskbefore choosing it. - If scope, acceptance criteria, required tooling, or file ownership is
unclear, leave the task
todoor set it toreviewand ask the user for direction. Do not invent requirements. - Form small batches. Concurrent developer work is permitted only when the selected tasks do not share files or generated outputs. Keep one available collaboration slot for the Manager; otherwise run work sequentially.
- Before delegating a leaf task, update it to
in_progresswithhandoff_update_task. Supply a positiveschedule.estimate_hourswhen required by Handoff.
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 110 lines · 51 tokens per session scan A 504a8da5908a
handoff-session-loop is a skill published in the GitHub repository alphaelements/handoff-mcp (0 stars, last pushed 4d ago), licensed MIT. It adds 51 tokens to every session and 1,236 once invoked, about $0.0003 per session on Opus 5. 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.
Other skills, from other repositories
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
brainstorming
You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.
auto-perf-optimize
Run agent-driven VS Code performance or memory investigations. Use when asked to launch Code OSS, automate a VS Code scenario, run the Chat memory smoke runner, capture renderer heap snapshots, take workflow screenshots, compare run summaries, or drive a repeatable scenario before heap-snapshot analysis.
chat-perf
Run chat perf benchmarks and memory leak checks against the local dev build or any published VS Code version. Use when investigating chat rendering regressions, validating perf-sensitive changes to chat UI, or checking for memory leaks in the chat response pipeline.
chat-pet-sprite-creation
Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.
cpu-profile-analysis
Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…