execution-orchestrator

execution-orchestrator is a skill for Claude Code, Codex from nexus-research-lab/nexus. It costs 36 tokens per session (1,198 once invoked), scanned A, original, Apache-2.0.

A planning and coordination skill for substantial coding tasks. It chooses how work should be organized, tracked, delegated, reviewed, and resumed across execution steps.

In plain words
What is it for?
Use it to inspect or prepare execution plans, assign work, pass review gates, recover interrupted work, and save reusable work graphs.
Why use it?
Larger tasks can lose track of ownership, progress, permissions, or earlier results. This provides a controlled execution structure when one direct step is not enough.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Good fit Use it to inspect or prepare execution plans, assign work, pass review gates, recover interrupted work, and save reusable work graphs.

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Install with agentmods
npx agentmods add skills/nexus-research-lab/nexus/execution-orchestrator
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.

Any agent
npx skills add nexus-research-lab/nexus --skill execution-orchestrator
Clone the repo
git clone --depth 1 https://github.com/nexus-research-lab/nexus

Made for: Claude Code, Codex.

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 execution-orchestrator

README.md
[![agentmods](https://agentmods.dev/badge/skills/nexus-research-lab/nexus/execution-orchestrator/github.svg)](https://agentmods.dev/skills/nexus-research-lab/nexus/execution-orchestrator)
Your own site
<a href="https://agentmods.dev/skills/nexus-research-lab/nexus/execution-orchestrator"><img src="https://agentmods.dev/badge/skills/nexus-research-lab/nexus/execution-orchestrator/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for execution-orchestrator

Your own site · 80×15
<a href="https://agentmods.dev/skills/nexus-research-lab/nexus/execution-orchestrator"><img src="https://agentmods.dev/badge/skills/nexus-research-lab/nexus/execution-orchestrator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,198 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00036 $0.01198
Opus 5.5 $0.00014 $0.00479
Sonnet 5.5 $0.00007 $0.00240
Haiku 4.5 $0.00004 $0.00120

Measured 1mo ago against content hash 75b7e0244087, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

execution-orchestrator 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 1mo 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.

skills/execution-orchestrator/SKILL.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Execution Orchestrator

Execution 管理当前责任交付;Goal 管理跨轮目标。按需独立选择或显式绑定,不按任务长度或人数推断。

入口与命令协议

  1. substantial execution 前先判断直接执行、局部 Task、Subagent、WorkGraph、Room Assignment、Gate/Loop 或 Goal 中哪些结构真的降低风险;简单原子任务直接完成。 子任务使用 nexus.command/subagent,按下方参考操作;不要求先创建工作图。

  2. 执行当前任务的责任图时,先调用宿主提供的 nexus.command:

    {"domain":"execution","action":"inspect"}
    

    明确读取同一可信 scope 的历史图时才传 input.execution_id。 inspect 不回放成功工具历史;恢复优先使用交付、验收与产物证据,避免重做。 查询、提取、编辑、选择或保存模板草图则直接走 WorkGraph authoring 参考;这些操作不要求 active Execution,也不先运行 execution inspect。

  3. 执行图从 data.execution_context XML 的 <allowed_actions>、lane 和 binding 判断权限;模板草图使用 authoring 目录。mutation 前读取 fresh exact contract:

    {"domain":"execution","action":"contract","operation":"<operation>"}
    

    字段、identity、authority 和 revision 以本轮 contract 为准。

  4. 业务输入是 additionalProperties=false 的 closed object,直接放在工具的 input 字段中。只提交 fresh input_schema.properties 中属于当前意图的字段;opaque locator 来自 inspect/receipt,不从标题或正文猜。相同语义重试复用 request_id,operation、目标或输入变化时换新 ID。

  5. 先检查 is_error;Execution 操作再按 operation 解读 data.outcome:applied 表示已应用;no_op 无新增变更,结合 message 区分重放与 Plan Mode 校验;prepare 成功为 prepared,草图提取为 ready,版本选择为 selected。rejected/superseded 不能当成功。next_actions 是建议,不授权,始终服从同一结果里的最新 lane、binding 和 allowed_actions。

get_execution 只用 action=inspect,省略 operation/request_id,不走 invoke。Room 当前负责人自行 inspect 恢复协调权限,成员只获得观察。lane/background 不是界面模式;不要让用户切模式或再发“开始”。

context_status=refresh_required 时 inspect;round_refresh_required 结束旧轮。DM/Room 共用 Execution 但 session 独立;DM continuation 仅宿主 claim 后有 exact authority。

按当前动作读取参考

Read the full file on GitHub · 57 lines

Files

What ships with it

7 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.

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. 1mo ago Changed 75b7e0244087
  2. 1mo ago Changed · +4 lines · -36 tokens per session 681178a06b10
  3. 1mo ago First seen · 53 lines · 72 tokens per session scan A b526c137e523

Subscribe to this mod's changes

execution-orchestrator is a skill published in the GitHub repository nexus-research-lab/nexus (153 stars, last pushed today), licensed Apache-2.0. It adds 36 tokens to every session and 1,198 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.

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