research-codebase

research-codebase is a skill for Claude Code, Codex from doordash-oss/agentic-orchestrator. It costs 8 tokens per session (1,575 once invoked), scanned A, original, Apache-2.0.

A read-only investigation that documents how a codebase works today. It researches files, components, and their interactions, then produces a Markdown report.

In plain words
What is it for?
Use it to answer questions about where behavior lives, how parts connect, and what the current system does.
Why use it?
It gives you an evidence-based map of an unfamiliar repository without changing its code or turning the investigation into a redesign exercise.

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/doordash-oss/agentic-orchestrator/research-codebase
Any agent
npx skills add doordash-oss/agentic-orchestrator --skill research-codebase
Clone the repo
git clone --depth 1 https://github.com/doordash-oss/agentic-orchestrator

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 research-codebase

README.md
[![agentmods](https://agentmods.dev/badge/skills/doordash-oss/agentic-orchestrator/research-codebase.svg)](https://agentmods.dev/skills/doordash-oss/agentic-orchestrator/research-codebase)
Your own site
<a href="https://agentmods.dev/skills/doordash-oss/agentic-orchestrator/research-codebase"><img src="https://agentmods.dev/badge/skills/doordash-oss/agentic-orchestrator/research-codebase.svg" alt="Measured on agentmods" height="20"></a>
Per session 8 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,575 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 $0.00008 $0.01575
Opus 5 $0.00004 $0.00788
Sonnet 5 $0.00002 $0.00315
Haiku 4.5 $0.00001 $0.00158

Measured 4d ago against content hash fcfc850fa95f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

research-codebase 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 4d 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/research-codebase/SKILL.md · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Research Codebase

You are tasked with conducting comprehensive research across the codebase to answer user questions by spawning parallel sub-agents and synthesizing their findings.

Output Files

Artifact Path Requirement Purpose
research markdown artifact {phase_dir}/<newest non-excluded *.md> required newest non-excluded markdown artifact in the phase directory

CRITICAL: YOUR ONLY JOB IS TO DOCUMENT AND EXPLAIN THE CODEBASE AS IT EXISTS TODAY

  • DO NOT edit or modify any code files — you are a researcher, not an implementer
  • DO NOT suggest improvements or changes unless the user explicitly asks for them
  • DO NOT perform root cause analysis unless the user explicitly asks for them
  • DO NOT propose future enhancements unless the user explicitly asks for them
  • DO NOT critique the implementation or identify problems
  • DO NOT recommend refactoring, optimization, or architectural changes
  • ONLY describe what exists, where it exists, how it works, and how components interact
  • You are creating a technical map/documentation of the existing system

Steps to follow after receiving the research query:

  1. Read any directly mentioned files first:

    • If the user mentions specific files (tickets, docs, JSON), read them FULLY first
    • CRITICAL: Read these files yourself in the main context before spawning any sub-tasks
    • This ensures you have full context before decomposing the research
  2. Analyze and decompose the research question:

    • Break down the user's query into composable research areas
    • Take time to ultrathink about the underlying patterns, connections, and architectural implications the user might be seeking
    • Identify specific components, patterns, or concepts to investigate
    • Create a research plan using TodoWrite to track all subtasks
    • Consider which directories, files, or architectural patterns are relevant
  3. Spawn parallel sub-agent tasks for comprehensive research:

    • Create multiple Task agents to research different aspects concurrently
    • We now have specialized agents that know how to do specific research tasks:

Read the full file on GitHub · 139 lines

Files

What ships with it

2 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. 4d ago First seen · 139 lines · 8 tokens per session scan A fcfc850fa95f

Subscribe to this mod's changes

research-codebase is a skill published in the GitHub repository doordash-oss/agentic-orchestrator (101 stars, last pushed today), licensed Apache-2.0. It adds 8 tokens to every session and 1,575 once invoked, about $0.0000 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.

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