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.
npx skills add marinahaugen/polymorph-mindset-plugins --skill design-first-collaborationgit clone --depth 1 https://github.com/marinahaugen/polymorph-mindset-pluginsWrote 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.
[](https://agentmods.dev/skills/marinahaugen/polymorph-mindset-plugins/design-first-collaboration)<a href="https://agentmods.dev/skills/marinahaugen/polymorph-mindset-plugins/design-first-collaboration"><img src="https://agentmods.dev/badge/skills/marinahaugen/polymorph-mindset-plugins/design-first-collaboration.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00042 | $0.01270 |
| Opus 5 | $0.00021 | $0.00635 |
| Sonnet 5 | $0.00008 | $0.00254 |
| Haiku 4.5 | $0.00004 | $0.00127 |
Grade A, and why
design-first-collaboration 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.
How it starts
The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Architectural Design First
Structured architectural decomposition in four levels, each requiring user approval before proceeding. No code until contracts are agreed. After approval, decisions are captured as an ADR.
Position in workflow: After brainstorming (what to build) → this skill → writing-plans (implementation steps)
Process Flow
digraph design_flow {
rankdir=TB;
node [shape=box];
cap [label="Level 1: Capabilities"];
comp [label="Level 2: Components"];
int [label="Level 3: Interactions"];
con [label="Level 4: Contracts"];
adr [label="Generate ADR" shape=doublecircle];
plan [label="Transition to writing-plans" shape=doublecircle];
cap -> comp [label="approved"];
comp -> int [label="approved"];
int -> con [label="approved"];
con -> adr [label="approved"];
adr -> plan;
cap -> cap [label="revise"];
comp -> comp [label="revise"];
int -> int [label="revise"];
con -> con [label="revise"];
}
The Four Levels
Level 1: Capabilities
Question: What does this feature need to DO?
List concrete capabilities from the user's perspective. No technical decisions — just what the system must be able to do. Bulleted list, each starting with a verb.
Ask: "Are these the right capabilities? Anything missing or unnecessary?"
Level 2: Components
Question: What pieces do we need to build?
Identify components — services, storage, endpoints — and where they live in the existing architecture. Reference real files and patterns from the codebase. Table or structured list with responsibilities and locations.
Include: Which modules/layers, new vs modified components, storage decisions Exclude: Method signatures (→ Contracts), data flow (→ Interactions)
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 7d ago First seen · 131 lines · 42 tokens per session scan A 4d05cee5b069
design-first-collaboration is a skill published in the GitHub repository marinahaugen/polymorph-mindset-plugins (4 stars, last pushed 2mo ago), licensed MIT. It adds 42 tokens to every session and 1,270 once invoked, about $0.0002 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 2026-08-31.
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