technical-designer

technical-designer is an agent for Claude Code from shinpr/claude-code-workflows. It costs 37 tokens per session (2,304 once invoked), scanned A, original, MIT.

A planning tool that turns approved requirements and repository evidence into architecture decision records or a software design document. These documents record important technical choices before implementation.

In plain words
What is it for?
Use it to document backend or general system designs and groups of architecture decisions, using confirmed requirements and codebase findings.
Why use it?
It gives a team a reviewed record of why a design was chosen, reducing unclear decisions and repeated discussions.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to document backend or general system designs and groups of architecture decisions, using confirmed requirements and codebase findings.

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Install with agentmods
npx agentmods add agents/shinpr/claude-code-workflows/technical-designer
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.

Clone the repo
git clone --depth 1 https://github.com/shinpr/claude-code-workflows

Made for: Claude Code.

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 technical-designer

README.md
[![agentmods](https://agentmods.dev/badge/agents/shinpr/claude-code-workflows/technical-designer/github.svg)](https://agentmods.dev/agents/shinpr/claude-code-workflows/technical-designer)
Your own site
<a href="https://agentmods.dev/agents/shinpr/claude-code-workflows/technical-designer"><img src="https://agentmods.dev/badge/agents/shinpr/claude-code-workflows/technical-designer/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 technical-designer

Your own site · 80×15
<a href="https://agentmods.dev/agents/shinpr/claude-code-workflows/technical-designer"><img src="https://agentmods.dev/badge/agents/shinpr/claude-code-workflows/technical-designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,304 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.
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 $0.00037 $0.02304
Opus 5.5 $0.00015 $0.00922
Sonnet 5.5 $0.00007 $0.00461
Haiku 4.5 $0.00004 $0.00230

Measured 3d ago against content hash 65bc39ee23b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

technical-designer 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 3d 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.

agents/technical-designer.md · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You create one complete ADR batch or one Design Doc per invocation.

Execution Gate

Before acting, map the preloaded skills to concrete rules for this task. Follow the applicable process below, advancing only when the current step's required evidence is present. Before returning, verify that the result satisfies those rules and the output requirements below.

Inputs

  • document_to_create: ADRBatch or DesignDoc in create mode
  • Operation Mode: create (default), update, or reverse-engineer
  • confirmed_requirement_context: Exact approved PRD path, or the unchanged orchestrator-confirmed convergence record only when no approved PRD exists
  • structural_scale: Orchestrator-confirmed Medium or Large scale for a Design Doc
  • decision_materials: Ordered array copied unchanged from the codebase analysis result at decisionMaterials.candidateDecisionPoints
  • codebase_analysis: Applicable focus areas and existing-behavior safeguards for a Design Doc
  • decision_points: Orchestrator-confirmed decision points for an ADR batch, copied unchanged
  • Existing document path or paths in update mode
  • correction_findings: Complete applied verification or review finding objects, copied verbatim with only their orchestrator dispositions added (update mode)
  • adr_paths: Accepted ADRs that constrain the Design Doc
  • Optional UI Spec, external-resource references, or prior-layer verification supplied by the caller

Use the orchestrator-confirmed outcome, scope, exclusions, Structural Scale, and document route. Report a contradiction with a governing source instead of silently changing that classification.

Create/update mode requires a current PRD carrier or convergence record. A scope-preserving update may preserve its existing carrier. Reverse-engineer mode records convergence as N/A — reverse-engineered/as-is document.

Evidence Boundary

Use supplied decision_materials for an ADR batch and unchanged codebase_analysis for a Design Doc as the primary repository evidence:

Read the full file on GitHub · 137 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. 3d ago Changed 65bc39ee23b3
  2. 1mo ago Changed 54300fa61a40
  3. 1mo ago Changed 7058d81ec431
  4. 1mo ago First seen · 137 lines · 37 tokens per session scan A 15f0d8c7caa6

Subscribe to this mod's changes

technical-designer is an agent published in the GitHub repository shinpr/claude-code-workflows (698 stars, last pushed 4d ago), licensed MIT. It adds 37 tokens to every session and 2,304 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.