large-workspace-handling

large-workspace-handling is a skill for Claude Code, Codex from griddynamics/rosetta. It costs 26 tokens per session (724 once invoked), scanned A, original, Apache-2.0.

A method for splitting very large coding workspaces into smaller tasks for separate agents. A workspace is the project folder and its files; a scoped task assigns each file to one area of work.

In plain words
What is it for?
It is for mapping a large codebase, defining non-overlapping file scopes, assigning investigation or implementation tasks, and combining the results.
Why use it?
It helps when the whole project cannot fit into one agent’s working context while keeping the resulting changes organized and complete.

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/griddynamics/rosetta/large-workspace-handling
Any agent
npx skills add griddynamics/rosetta --skill large-workspace-handling
Clone the repo
git clone --depth 1 https://github.com/griddynamics/rosetta

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 large-workspace-handling

README.md
[![agentmods](https://agentmods.dev/badge/skills/griddynamics/rosetta/large-workspace-handling.svg)](https://agentmods.dev/skills/griddynamics/rosetta/large-workspace-handling)
Your own site
<a href="https://agentmods.dev/skills/griddynamics/rosetta/large-workspace-handling"><img src="https://agentmods.dev/badge/skills/griddynamics/rosetta/large-workspace-handling.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 724 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 $0.00026 $0.00724
Opus 5 $0.00013 $0.00362
Sonnet 5 $0.00005 $0.00145
Haiku 4.5 $0.00003 $0.00072

Measured 5d ago against content hash 34034d8ab00a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

large-workspace-handling 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.

instructions/r2/core/skills/large-workspace-handling/SKILL.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<large_workspace_handling>

Workspace partitioning strategist. Draws scope boundaries, dispatches subagents.

<when_to_use_skill> Use when large workspaces exceed single-agent context window. Partitions into write-scopes where every file belongs to exactly one scope, and merged results address the original request completely. </when_to_use_skill>

<core_concepts>

  • All Rosetta prep steps MUST be FULLY completed, load-context skill loaded and fully executed
  • If CODEMAP.md missing, ACQUIRE init-workspace-discovery/SKILL.md FROM KB and EXECUTE to create ONLY CODEMAP.md
  • Grep # headers of CODEMAP before scoping

Two strategies (mutually exclusive):

  • Summarize & Index
  • Work distribution

Summarization & Indexing

  • Research without changing code, navigable index with module summaries, etc.
  • Assign subagents: scope paths, goal, context, inputs, output format, boundaries, constraints, and level of detail
  • Subagents to ACQUIRE reverse-engineering/SKILL.md FROM KB if needed for code analysis
  • Request slightly more information than actually needed for better understanding
  • Summarize all outputs
  • Subagent: discoverer, explore, etc.
  • Subagent output structure: analysis scope, TLDR answer, quick navigation with relevance, details with subsections per each logical group (globs, purpose, key components, relevant findings, dependencies), cross-group map, follow ups required
  • Subagents to use relevance classification:
    • High: group directly addresses the research question
    • Medium: group has supporting information or context
    • Low: group tangentially related, included for completeness

Work distribution

  • Coordinated modifications via contract-scoped parallel subagents with explicit boundaries and success criteria
  • Split work across subagents and provide: scope paths, goal, context, inputs, output format, boundaries, constraints, operations, and success criteria
  • Subagents decide and execute work within declared scope
  • Resolve cross-scope deps via execution ordering
  • Resolve shared-interface conflicts or changes with extra pass
  • Produce unified result
  • Subagent: executor, engineer, etc.

Read the full file on GitHub · 72 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 · 72 lines · 26 tokens per session scan A 34034d8ab00a

Subscribe to this mod's changes

large-workspace-handling is a skill published in the GitHub repository griddynamics/rosetta (342 stars, last pushed yesterday), licensed Apache-2.0. It adds 26 tokens to every session and 724 once invoked, about $0.0001 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 2026-08-30.