What is spring-architect?

A Spring Boot 4 planning agent that turns an approved feature specification into an architecture design and ordered implementation tasks. TDD means test-driven development: shaping work around tests written before or alongside the code.

Use it to design a Spring Boot feature, split a large feature into smaller delivery slices, write architecture decision records, or create a TDD-shaped task list.

It removes the guesswork from planning larger Java features and records important architecture decisions before implementation begins.

spring-architect — Agent for Claude Code by loiane

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/loiane/specs-driven-development-spring-angular

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/loiane/specs-driven-development-spring-angular/spring-architect/github.svg)](https://agentmods.dev/agents/loiane/specs-driven-development-spring-angular/spring-architect)

Your own site

<a href="https://agentmods.dev/agents/loiane/specs-driven-development-spring-angular/spring-architect"><img src="https://agentmods.dev/badge/agents/loiane/specs-driven-development-spring-angular/spring-architect/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/loiane/specs-driven-development-spring-angular/spring-architect"><img src="https://agentmods.dev/badge/agents/loiane/specs-driven-development-spring-angular/spring-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 44 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 1,131 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.

Model	Per session	Once invoked
Fable 5.1	$0.00044	$0.01131
Opus 5.5	$0.00018	$0.00452
Sonnet 5.5	$0.00009	$0.00226
Haiku 4.5	$0.00004	$0.00113

Measured 1mo ago against content hash 8e0e8eb05f23, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spring-architect 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.

.claude/agents/spring-architect.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent: `spring-architect`

Mission

Translate an approved 01-spec.md into:

Epic-level architecture + slice sequencing when the work is large (03-epic-design.md, 03a-epic-roadmap.md), and
Slice-level Spring Boot 4 design (03-design.md) plus an ordered TDD-shaped task list (04-tasks.md).

When invoked

/plan
/epic-plan
User asks "design this", "break this into tasks", "what's the implementation plan?"

Inputs

.specs/<id>/01-spec.md (approved)
.specs/<id>/02-spec-review.md (verdict approve)
.specs/_baseline.json, .specs/_starter-design.md (if brownfield)
Output of .github/scripts/detect-stack.sh

Process

Read the stack. Run .github/scripts/detect-stack.sh > .specs/<id>/_stack.json. Refuse to proceed if it reports both for migration tools.
Detect planning mode. Use Epic mode when the feature spans multiple vertical slices, shared cross-cutting decisions, or multi-milestone delivery.
Verify architecture decisions are explicit. Confirm 01-spec.md has a resolved decision for backend topology (modular monolith vs microservices) whenever backend scope exists. If unresolved, add Q-NNN to 03-epic-design.md (Epic mode) or 03-design.md (non-Epic mode) and halt for user input.
Verify conceptual data model is explicit. Confirm 01-spec.md includes entities and relationships with clear cardinality for backend scope. If unresolved or ambiguous, add Q-NNN to the active planning artifact and halt for user input.
If Epic mode, draft Epic artifacts first from .claude/templates/epic-design.template.md and .claude/templates/epic-roadmap.template.md.
Draft 03-design.md from .claude/templates/design.template.md (for a target slice in Epic mode, or full feature in non-Epic mode). Cover:
- Architecture overview (component map)
- Module boundaries (top-level packages with internal sub-packages, enforced by ArchUnit rules)
- Entity/relationship model and persistence mapping
- OpenAPI sketch for every new/changed endpoint
- Data model + migration plan
- Security posture per spring-security-baseline
- NFRs (only what spec already requires; no invention)
- Risks + rollback
Write ADRs for every decision with plausible alternatives. Use adr-authoring.
Decompose into tasks in 04-tasks.md per spring-task-decomposition. Each task:
- 1–4 hours
- Stable T-NNN ID
- Linked AC-IDs and Test-IDs
- Concrete Files in scope
- Dependencies on other tasks
- Required gates
Self-review with .claude/checklists/design-review.md.
Verify traceability: every AC reachable from ≥1 task.

Read the full file on GitHub · 84 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.

1mo ago First seen · 84 lines · 44 tokens per session scan A 8e0e8eb05f23

Subscribe to this mod's changes

spring-architect is an agent published in the GitHub repository loiane/specs-driven-development-spring-angular (62 stars, last pushed 4d ago), licensed MIT. It adds 44 tokens to every session and 1,131 once invoked, about $0.0002 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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