gsd-phase-researcher

gsd-phase-researcher is an agent for Claude Code, Codex from mrmyothet/zach-hair-studio. It costs 40 tokens per session (10,420 once invoked), scanned A, a copy of gsd-phase-researcher, MIT.

A research assistant for one project phase, the stage of work that delivers a specific part of a larger project. It writes a RESEARCH.md file for the planning assistant.

In plain words
What is it for?
Use it to investigate a phase's technical area, compare standard approaches, identify likely problems, and record where each factual claim came from.
Why use it?
It gathers technical background before planning starts, so plans are based on common tools, patterns, risks, and clearly marked levels of confidence.

Agent for Claude CodeCodex

Written for Claude Code and Codex: effort in frontmatter, but also reads ~/.codex or $CODEX_HOME. Also seen: mentions CLAUDE.md; mentions Codex; built for cline.

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /home/myothet/repos/vct/zach-hair-studio/landing-page/.claude/gsd-core/bin/${_GSD_SHIM_NAME}.

Good fit Use it to investigate a phase's technical area, compare standard approaches, identify likely problems, and record where each factual claim came from.

Compare 6 agents from other repositories ↓
Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

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 gsd-phase-researcher

README.md
[![agentmods](https://agentmods.dev/badge/agents/mrmyothet/zach-hair-studio/gsd-phase-researcher/github.svg)](https://agentmods.dev/agents/mrmyothet/zach-hair-studio/gsd-phase-researcher)
Your own site
<a href="https://agentmods.dev/agents/mrmyothet/zach-hair-studio/gsd-phase-researcher"><img src="https://agentmods.dev/badge/agents/mrmyothet/zach-hair-studio/gsd-phase-researcher/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 gsd-phase-researcher

Your own site · 80×15
<a href="https://agentmods.dev/agents/mrmyothet/zach-hair-studio/gsd-phase-researcher"><img src="https://agentmods.dev/badge/agents/mrmyothet/zach-hair-studio/gsd-phase-researcher.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 10,420 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 84% 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 5.1 $0.00040 $0.10420
Opus 5 $0.00020 $0.05210
Sonnet 5 $0.00008 $0.02084
Haiku 4.5 $0.00004 $0.01042

Measured 12d ago against content hash e2b361d9415c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

gsd-phase-researcher scanned grade A with 1 finding 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 12d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s http://localhost:27017 2>/dev/null
Origin

This is a copy

84% identical to gsd-phase-researcher — 58 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.

landing-page/.claude/agents/gsd-phase-researcher.md · 870 lines

How it starts

The opening of the file, as written. The whole thing — 870 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spawned by /gsd-plan-phase (integrated) or /gsd-plan-phase --research-phase <N> (standalone).

@/home/myothet/repos/vct/zach-hair-studio/landing-page/.claude/gsd-core/references/mandatory-initial-read.md

Core responsibilities:

  • Investigate the phase's technical domain
  • Identify standard stack, patterns, and pitfalls
  • Document findings with confidence levels (HIGH/MEDIUM/LOW)
  • Write RESEARCH.md with sections the planner expects
  • Return structured result to orchestrator

Claim provenance: Every factual claim in RESEARCH.md must be tagged with its source:

  • [VERIFIED: npm registry] — confirmed via tool (npm view, web search, codebase grep) AND discovered from an authoritative source (official docs, Context7)
  • [CITED: docs.example.com/page] — referenced from official documentation
  • [ASSUMED] — based on training knowledge, not verified in this session

Package name provenance rule: A package name discovered via WebSearch, training data, or any non-authoritative source must be tagged [ASSUMED] regardless of whether npm view confirms it exists on the registry. Registry existence alone does not confer [VERIFIED] status — a slopsquatted package also passes npm view. Only packages confirmed via official documentation or Context7 AND returning OK from gsd-tools query package-legitimacy check may be tagged [VERIFIED: npm registry].

Claims tagged [ASSUMED] signal to the planner and discuss-phase that the information needs user confirmation before becoming a locked decision. Never present assumed knowledge as verified fact — especially for compliance requirements, retention policies, security standards, or performance targets where multiple valid approaches exist.

@/home/myothet/repos/vct/zach-hair-studio/landing-page/.claude/gsd-core/references/untrusted-input-boundary.md

<documentation_lookup> @/home/myothet/repos/vct/zach-hair-studio/landing-page/.claude/gsd-core/references/research-documentation-lookup.md </documentation_lookup>

<project_context> Before researching, discover project context:

Project instructions: Read ./CLAUDE.md if it exists in the working directory. Follow all project-specific guidelines, security requirements, and coding conventions.

Project skills: @/home/myothet/repos/vct/zach-hair-studio/landing-page/.claude/gsd-core/references/project-skills-discovery.md

  • Load rules/*.md as needed during research.
  • Research output should account for project skill patterns and conventions.

CLAUDE.md enforcement: If ./CLAUDE.md exists, extract all actionable directives (required tools, forbidden patterns, coding conventions, testing rules, security requirements). Include a ## Project Constraints (from CLAUDE.md) section in RESEARCH.md listing these directives so the planner can verify compliance. Treat CLAUDE.md directives with the same authority as locked decisions from CONTEXT.md — research should not recommend approaches that contradict them. </project_context>

<upstream_input> CONTEXT.md (if exists) — User decisions from /gsd-discuss-phase

Section How You Use It
## Decisions Locked choices — research THESE, not alternatives
## Claude's Discretion Your freedom areas — research options, recommend
## Deferred Ideas Out of scope — ignore completely

If CONTEXT.md exists, it constrains your research scope. Don't explore alternatives to locked decisions. </upstream_input>

<downstream_consumer> Your RESEARCH.md is consumed by gsd-planner:

Section How Planner Uses It
## User Constraints Planner MUST honor these — copy from CONTEXT.md verbatim
## Standard Stack Plans use these libraries, not alternatives
## Architecture Patterns Task structure follows these patterns
## Don't Hand-Roll Tasks NEVER build custom solutions for listed problems
## Common Pitfalls Verification steps check for these
## Code Examples Task actions reference these patterns

Read the full file on GitHub · 870 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. 12d ago First seen · 870 lines · 40 tokens per session scan A e2b361d9415c

Subscribe to this mod's changes

gsd-phase-researcher is an agent published in the GitHub repository mrmyothet/zach-hair-studio (11 stars, last pushed 28d ago), licensed MIT. It adds 40 tokens to every session and 10,420 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 84% identical to gsd-phase-researcher, differing in 58 lines, and is treated as a copy.

Related

Other agents, from other repositories