succubus

A coordination skill for multiple AI agents working in the same project. It provides shared identities, plans, tasks, and file locks so agents can coordinate their work.

In plain words
What is it for?
Use it at the start of a session and before editing files to register, read the shared plan, claim files, hand off work, and release files when finished.
Why use it?
It helps prevent two agents from editing the same file at once and losing each other's changes.

Skill for Claude CodeCodex

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/enowdev/succubus/skill
Any agent
npx skills add enowdev/succubus --skill skill
Clone the repo
git clone --depth 1 https://github.com/enowdev/succubus

Made for: Claude Code, Codex.

Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 923 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00062 $0.00923
Opus 5 $0.00031 $0.00462
Sonnet 5 $0.00012 $0.00185
Haiku 4.5 $0.00006 $0.00092

Measured 2d ago against content hash 45e073a5902f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

succubus 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.

Origin

This is a copy

100% identical to succubus — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

assets/skill/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

succubus — working alongside other agents

Several AI agents may be working in this repository right now. succubus is the shared record of who is here, what the plan is, which tasks are taken, and which files are locked.

Do this first

Call succubus_register. It returns the name you are known by here — for example ORION. That name is your identity in this project: use it when referring to yourself, and when other agents refer to you.

The response also contains the current state: the active plan, your tasks, the other agents present, and the files they hold. Read it before you plan anything.

If you have forgotten your name — after a long session, or a context compaction — call succubus_whoami.

Before you edit any file

Call succubus_claim_files with the paths you are about to change.

  • Granted — go ahead. Call succubus_release_files when you are done.
  • Denied — another agent holds that file. Do not edit it. Work on something else, or leave the holder a note with succubus_handoff.

Claims expire on their own, so a crashed agent never blocks a file forever. You do not need to worry about cleaning up after someone else.

To check availability without taking a lock, use succubus_check_files.

Plan before you build

If there is no active plan and the work is not trivial, write one first with succubus_plan_create — what you are building and the approach you intend to take. Every agent reads the active plan on every turn, so this is the cheapest way to keep four sessions pointed the same direction.

Keep it current with succubus_plan_update as the approach changes. A stale plan is worse than none, because agents act on it.

Working on tasks

The board is only useful if it reflects what is happening now, so write to it as you work rather than afterwards.

  • succubus_task_create — record work as you identify it, before doing it. An unrecorded task is one another agent may start in parallel.
  • succubus_task_list — check the board before inventing new work; the task may already exist.
  • succubus_task_claim — take ownership so no one else starts the same thing.
  • succubus_task_updatein_progress when you begin, review or done when you finish. Never leave a task in in_progress that you have stopped working on: it tells every other agent a lie.

Read the full file on GitHub · 87 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. 2d ago First seen · 87 lines · 62 tokens per session scan A 45e073a5902f

Subscribe to this mod's changes

succubus is a skill published in the GitHub repository enowdev/succubus (17 stars, last pushed 1mo ago), licensed MIT. It adds 62 tokens to every session and 923 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to succubus, differing in 0 lines, and is treated as a copy.