A specification-writing skill for defining software components, their connections, the data they exchange, and the tools used to build them. It links each part to an earlier architecture decision and to the tests it must satisfy.

Use it to write component interfaces, communication contracts, data schemas, and implementation-tool declarations.

It turns broad design decisions into precise contracts that developers and automated tools can follow. This reduces ambiguity about interfaces, data formats, and supported tools.

sdd-spec — Skill for Claude Code and Codex by vladm3105

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 vladm3105/aidoc-flow-framework --skill sdd-spec

Clone the repo

git clone --depth 1 https://github.com/vladm3105/aidoc-flow-framework

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/vladm3105/aidoc-flow-framework/sdd-spec/github.svg)](https://agentmods.dev/skills/vladm3105/aidoc-flow-framework/sdd-spec)

Your own site

<a href="https://agentmods.dev/skills/vladm3105/aidoc-flow-framework/sdd-spec"><img src="https://agentmods.dev/badge/skills/vladm3105/aidoc-flow-framework/sdd-spec/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/skills/vladm3105/aidoc-flow-framework/sdd-spec"><img src="https://agentmods.dev/badge/skills/vladm3105/aidoc-flow-framework/sdd-spec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 286 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	$0.00034	$0.00286
Opus 5.5	$0.00014	$0.00114
Sonnet 5.5	$0.00007	$0.00057
Haiku 4.5	$0.00003	$0.00029

Measured 19d ago against content hash ac7488012400, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sdd-spec 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 19d 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.

framework/skills/sdd-spec/SKILL.md · 31 lines

What it actually says

SDD SPEC Author

Framework skill — routes to framework/layers/06_SPEC/SPEC-TEMPLATE.yaml and SPEC_WORKFLOW_STANDARD.md (entry gate GATE-06). Paths below use <skills-root> = this framework/skills/ directory. Upstream: sdd-adr decisions constrain the components; the SPEC does not re-litigate them.

1. Contracts, not descriptions

Define component_overview with interfaces, wire contracts, and data schemas per component. SPEC owns the toolchain: pin it in the document's own language: field so generators and linters read one source of truth.

2. Stay inside the ADDs

Every component traces to its authorizing ADR and the BDD scenarios it implements. New top-level sections stay inside existing mappings (e.g. component_overview) so deterministic acceptance fixtures keep passing — a section that breaks the fixture is a section in the wrong place.

3. Seal and hand off

Gate: GATE-06. Fast-path restriction applies (CHG-L019). Next: sdd-tdd.

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.

19d ago First seen · 31 lines · 34 tokens per session scan A ac7488012400

Subscribe to this mod's changes

sdd-spec is a skill published in the GitHub repository vladm3105/aidoc-flow-framework (17 stars, last pushed 5d ago), licensed MIT. It adds 34 tokens to every session and 286 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 2026-10-26.

Backend and APIs Planning

sdd-spec next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
sdd-specvladm3105/aidoc-flow-framework	Skill	17	5d ago	MIT	A	34	Claude Code, Codex
mcp-tool-developersickn33/agentic-awesome-skills	Skill	50k	today	MIT	A	38	Claude Code
mem0-oss-to-platformmem0ai/mem0	Skill	69k	8d ago	Apache-2.0	A	217	Claude Code, Codex
azure-mgmt-botservice-dotnetmicrosoft/skills	Skill	3.2k	yesterday	MIT	A	78	Claude Code
fastapi-router-pymicrosoft/skills	Skill	3.2k	yesterday	MIT	A	46	Claude Code
api-designericrisco/rsc-harness	Skill	608	yesterday	MIT	A	105	Claude Code, Codex
migrate-segw-to-raparc-mcp/arc-1	Skill	262	today	MIT	A	106	Claude Code