df-solution-architect

df-solution-architect is a skill for Claude Code, Codex from OneDro1d/dark-factory. It costs 78 tokens per session (830 once invoked), scanned A, original, Apache-2.0.

An architecture guide for turning product requirements into a detailed data model, data flow, and service map. It assigns each business rule to the part of the system responsible for enforcing it.

In plain words
What is it for?
Use it to define schemas and message contracts, map data through services, mark trust boundaries, assign rule enforcement, and design retry and compensation behavior for external actions.
Why use it?
It connects what the product must mean with how the software will implement it. This reduces gaps between services, unclear ownership, and rules that nobody actually checks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to define schemas and message contracts, map data through services, mark trust boundaries, assign rule enforcement, and design retry and compensation behavior for external actions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/onedro1d/dark-factory/df-solution-architect
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.

Any agent
npx skills add OneDro1d/dark-factory --skill df-solution-architect
Clone the repo
git clone --depth 1 https://github.com/OneDro1d/dark-factory

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.

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README.md
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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 df-solution-architect

Your own site · 80×15
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Per session 78 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 830 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 $0.00078 $0.00830
Opus 5 $0.00039 $0.00415
Sonnet 5 $0.00016 $0.00166
Haiku 4.5 $0.00008 $0.00083

Measured 7d ago against content hash 92c9765ac913, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

df-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 7d 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/df-solution-architect/SKILL.md · 35 lines

How it starts

The opening of the file, as written. The whole thing — 35 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dark Factory — Solution Architect (formalize the transform graph)

Overview

The SA answers how. It produces Data Model, Data Flow, Service Map. Through the data-transform lens (df-data-transform-lens), the three docs are the model. The PO already defined the semantics; the SA's job is formalization — turn each into a schema/contract, assign each rule its enforcement locus and mechanism, and tag transforms.

The three outputs

  • Data Model = data nodes. Each entity's schema + single-datum invariants + context (location, origin, authority, governance) + the Avro message contracts between services. Declare the authority (system-of-record) for every fact that exists in more than one place.
  • Data Flow = the transform graph. Each step (state, in) → (state', out), tagged pure | effect. Every effect carries an idempotency key + compensation in the flow. Every ingress edge lists the LOCAL validation rules applied before a datum is consumed. One path per PO Test Scenario.
  • Service Map = transform ownership + boundaries. Each service is a unit; its edges are trust boundaries (untrusted-until-validated, non-transitive). The runtime trust profile is just the origin/authority/boundary tags made explicit. Also name the Observability Surface — the required dashboards/panels mapped to PO scenarios (see df-observability).

Ownership handoff (PO → SA)

The PO + SMEs defined the semantics (data, origin, trust, authority, governance, the validation-rule predicates). Your job is formalization:

  • turn each into a schema / Avro contract;
  • assign every validation rule its enforcement locus (LOCAL → reject at an edge; GLOBAL → reconcile by authority) and mechanism (XSD / Schematron / DB constraint / reconciliation job — a common split is XSD for structure and Schematron for cross-field business rules, but name the mechanism your stack actually enforces with);
  • tag transforms pure/effect with idempotency + compensation. Do not re-decide domain facts (which source is authoritative, what must be true) — if one is missing or wrong, loop back to PO.

Read the full file on GitHub · 35 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. 7d ago First seen · 35 lines · 78 tokens per session scan A 92c9765ac913

Subscribe to this mod's changes

df-solution-architect is a skill published in the GitHub repository OneDro1d/dark-factory (0 stars, last pushed yesterday), licensed Apache-2.0. It adds 78 tokens to every session and 830 once invoked, about $0.0004 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 2026-09-01.

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