cvg-multi-session

cvg-multi-session is a skill for Claude Code, Codex from gomilesf/convergo. It costs 54 tokens per session (2,640 once invoked), scanned A, original, MIT.

A workflow for coordinating several separate coding-agent sessions as one monitored process. It supports handoffs between planners, implementers, reviewers, and quality checks.

In plain words
What is it for?
Use it to run planning and implementation loops across Codex or Claude Code sessions and inspect their progress and results.
Why use it?
It helps manage work that needs multiple agents without losing track of who is doing what or whether a handoff was completed.

Skill for Claude CodeCodex

Part of the convergo plugin — 11 skills shipped together

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.

agentmods
npx agentmods add skills/gomilesf/convergo/cvg-multi-session
Any agent
npx skills add gomilesf/convergo --skill cvg-multi-session
Clone the repo
git clone --depth 1 https://github.com/gomilesf/convergo

Made for: Claude Code, Codex.

Or install convergo, the plugin that ships this one along with the rest of its 11 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cvg-multi-session

README.md
[![agentmods](https://agentmods.dev/badge/skills/gomilesf/convergo/cvg-multi-session.svg)](https://agentmods.dev/skills/gomilesf/convergo/cvg-multi-session)
Your own site
<a href="https://agentmods.dev/skills/gomilesf/convergo/cvg-multi-session"><img src="https://agentmods.dev/badge/skills/gomilesf/convergo/cvg-multi-session.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,640 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What 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.

ModelPer sessionOnce invoked
Fable 5 $0.00054 $0.02640
Opus 5 $0.00027 $0.01320
Sonnet 5 $0.00011 $0.00528
Haiku 4.5 $0.00005 $0.00264

Measured 5d ago against content hash 63cf9559ff03, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cvg-multi-session 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 5d 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.

plugins/claude/skills/cvg-multi-session/SKILL.md · 248 lines

How it starts

The opening of the file, as written. The whole thing — 248 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Multi-Session Workflow

Use this skill when the current session should act as an orchestrator over other real specialist sessions.

The workflow is repo-independent. Specialist prompts should carry only the coordination data the specialist cannot infer from the selected role skill and source artifact. Do not paste broad repo rules, likely-file lists, old phase state, or role-skill procedures unless they are task-specific authority.

Non-Negotiable Protocol Gates

Apply these gates before any planner, worker, reviewer, QA runner, or quality reviewer is launched.

Gate 0: Transport Binding

Bind the specialist operations to the current platform before applying any other gate:

Operation Codex Claude Code
Spawn specialist create_thread Agent tool with run_in_background: true
Continue specialist send_message_to_thread SendMessage to the agent id
Verify identity read_thread on the returned thread id agent id in the Agent tool result
Inspect output read_thread TaskOutput or the completion notification
Wait heartbeat automation end the turn; the harness re-invokes the orchestrator on <task-notification>

The authoritative specialist identity is always the id returned by the platform tool — never an id the specialist writes in prose. Do not accept placeholder specialist identity in callback templates.

On Claude Code, background specialists can spawn their own subagents (auxiliary reviewers, researchers), and a completed specialist is resumed from its persisted transcript when continued with SendMessage. Both loop requirements are natively supported; do not flatten a specialist's internal delegation into the orchestrator.

If the transport tools are not available after searching for them, report a tool-layer blocker. Do not fall back to inline simulation of a specialist.

Gate 1: Real Specialist Session

Specialists must run as real, individually addressable platform sessions: Codex threads or Claude Code background agents.

Read the full file on GitHub · 248 lines

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. 5d ago First seen · 248 lines · 54 tokens per session scan A 63cf9559ff03

Subscribe to this mod's changes

cvg-multi-session is a skill published in the GitHub repository gomilesf/convergo (7 stars, last pushed 1mo ago), licensed MIT. It adds 54 tokens to every session and 2,640 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.

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