source-driven-development

source-driven-development is a skill for Claude Code, Codex from Plazmodium/odin-workflow. It costs 15 tokens per session (284 once invoked), scanned A, original, MIT.

A development practice for checking official documentation before relying on a framework, library, command-line tool, API, or protocol.

In plain words
What is it for?
Use it to verify external behavior, compare documentation with installed versions and local code, and record which sources support implementation decisions.
Why use it?
It reduces errors caused by outdated knowledge, version differences, guessed API names, or unreliable examples.

Skill for Claude CodeCodex

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

Good fit Use it to verify external behavior, compare documentation with installed versions and local code, and record which sources support implementation decisions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/plazmodium/odin-workflow/source-driven-development
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 Plazmodium/odin-workflow --skill source-driven-development
Clone the repo
git clone --depth 1 https://github.com/Plazmodium/odin-workflow

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.

agentmods badge for source-driven-development

README.md
[![agentmods](https://agentmods.dev/badge/skills/plazmodium/odin-workflow/source-driven-development.svg)](https://agentmods.dev/skills/plazmodium/odin-workflow/source-driven-development)
Your own site
<a href="https://agentmods.dev/skills/plazmodium/odin-workflow/source-driven-development"><img src="https://agentmods.dev/badge/skills/plazmodium/odin-workflow/source-driven-development.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 284 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 $0.00015 $0.00284
Opus 5 $0.00008 $0.00142
Sonnet 5 $0.00003 $0.00057
Haiku 4.5 $0.00002 $0.00028

Measured 6d ago against content hash 6d0a0be79944, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

source-driven-development 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 6d 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/skills/workflow/source-driven-development/SKILL.md · 42 lines

What it actually says

source-driven-development

When To Use

  • Using unfamiliar framework, library, CLI, API, or protocol behavior.
  • Version-specific behavior matters.
  • The implementation depends on an external contract.

Workflow

  1. Identify the exact library, framework, service, or API and version when possible.
  2. Prefer official docs, source repositories, or project-maintained references.
  3. Retrieve only the docs relevant to the decision.
  4. Compare docs against the local code's installed version and existing patterns.
  5. Cite or summarize the source-backed rule that guides the change.
  6. Flag anything unverified instead of inventing precision.

Anti-Rationalization

Excuse Rebuttal
"I know this framework." Model memory may be stale or version-mismatched.
"The API name sounds right." Plausible APIs are a common hallucination. Verify.
"A blog post is enough." Prefer authoritative docs when behavior matters.

Verification

  • External behavior is backed by an authoritative source.
  • Local version or code pattern does not contradict the source.
  • Unverified assumptions are labeled.

Exit Criteria

  • Framework-dependent implementation choices are source-grounded.
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. 6d ago First seen · 42 lines · 15 tokens per session scan A 6d0a0be79944

Subscribe to this mod's changes

source-driven-development is a skill published in the GitHub repository Plazmodium/odin-workflow (0 stars, last pushed 3mo ago), licensed MIT. It adds 15 tokens to every session and 284 once invoked, about $0.0001 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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