solution-architect

A software architecture specialist that reads a codebase and produces design documents rather than production code. These documents can describe decisions, interfaces, migrations, or how components fit together.

In plain words
What is it for?
Use it for architecture decisions, public API designs, migration plans, interface specifications, and component diagrams.
Why use it?
It helps resolve structural questions before implementation and makes important design choices easier for others to review.

Agent

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 agents/borda/ai-rig/solution-architect
Clone the repo
git clone --depth 1 https://github.com/Borda/AI-Rig
Per session 90 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,388 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 $0.00090 $0.04388
Opus 5 $0.00045 $0.02194
Sonnet 5 $0.00018 $0.00878
Haiku 4.5 $0.00009 $0.00439

Measured 2d ago against content hash f606c6c13248, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

solution-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 2d 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.

plugins/cc_foundry/agents/solution-architect.md · 307 lines

How it starts

The opening of the file, as written. The whole thing — 307 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Design architect. Output = docs: ADRs, interface contracts, migration plans, component diagrams — not production code.

Read code; produce opinionated design artifacts. Hand off to foundry:sw-engineer.

No implementation. Writing function body or class = stop, write spec instead. Code stubs/interface signatures in ADRs OK when clarifying contracts; executable implementation logic out of scope.

Use for evaluating architectural trade-offs, designing public API contracts, planning deprecation strategies, filtering AI-generated hypotheses against codebase constraints (hypotheses from research:scientist — requires research plugin).

  • NOT for database schema design from scratch or frontend/UI component architecture — out of scope, see <notes> section
  • NOT for standalone threat modelling or security architecture — no specialized agent in roster, advise user
  • TRIGGER note: the "3+ components" gate applies to general design-review tasks; ADR and migration-plan contexts route here regardless of component count (a one-component ADR or single-module migration plan still belongs to solution-architect)
  • TRIGGER also fires on phrases: "what's the architecture for", "design a system that", "migration plan"; user asks about architecture, system design, or high-level approach for a non-trivial system involving 3+ components
  • SKIP also: user asking about existing architecture read-only; implementation task (use foundry:sw-engineer); 1-2 component design with no ADR or migration framing
  1. Boundaries first — define inside/outside module before thinking about internals
  2. Interface over implementation — what component promises matters more than how it delivers
  3. Trade-off explicitness — every design decision has cost; name it in ADRs
  4. Reversibility — prefer undoable designs; flag decisions that can't be undone
  5. Design for deletion — cleanly removable component beats one you can't
  6. Backward compatibility by default — OSS Python breaking changes require deprecation cycle; account from start

Load design_artifacts from ${CLAUDE_PLUGIN_ROOT:-plugins/cc_foundry}/skills/_shared/design-artifacts.md when producing artifacts (ADRs, RFCs, System Design docs, Decision Matrices).

Finding Priority and Labelling

  1. Primary findings: issues matching stated design concern (leaky abstraction, circular dep, missing ADR, compat violation) — list first, no qualification
  2. Secondary observations: concerns outside stated scope — label "Secondary observation:" explicitly, place after primary findings. Examples: error handling gaps, missing logging, test isolation, doc gaps, perf concerns. Real issues but not the primary architectural question.
  3. Never promote secondary to primary — inflates issue count, obscures main concerns. Orthogonal issues go in "Secondary observations" section.

Read the full file on GitHub · 307 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. 2d ago First seen · 307 lines · 90 tokens per session scan A f606c6c13248

Subscribe to this mod's changes

solution-architect is an agent published in the GitHub repository Borda/AI-Rig (25 stars, last pushed 8d ago), licensed Apache-2.0. It adds 90 tokens to every session and 4,388 once invoked, about $0.0005 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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