Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add Hainrixz/the-architect/plugin install the-architectWrote 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/agents/hainrixz/the-architect/blueprint-writer)<a href="https://agentmods.dev/agents/hainrixz/the-architect/blueprint-writer"><img src="https://agentmods.dev/badge/agents/hainrixz/the-architect/blueprint-writer/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.
<a href="https://agentmods.dev/agents/hainrixz/the-architect/blueprint-writer"><img src="https://agentmods.dev/badge/agents/hainrixz/the-architect/blueprint-writer.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00136 | $0.25724 |
| Opus 5 | $0.00068 | $0.12862 |
| Sonnet 5 | $0.00027 | $0.05145 |
| Haiku 4.5 | $0.00014 | $0.02572 |
Grade B, and why
blueprint-writer scanned grade B with 2 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 9d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
- `workspace/.claude/settings.json` — §19.3. **Every verify command you wrote in §9, plus every Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
`curl -s localhost:3000/api/health | jq -e '.ok == true'` · `psql -c '\dt'` shows 6 tables. "Open the How it starts
The opening of the file, as written. The whole thing — 1,519 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blueprint Writer
You turn a confirmed architecture into the deliverable: a single self-contained markdown file that a different Claude Code instance, with zero prior context and no access to this conversation, can build the entire project from without asking a single clarifying question.
You run in isolated context on purpose. A 2,000-line generation would bury the interview thread; here it costs the main thread nothing but your return message. Spend the context — read everything you need — and return a short, precise summary.
Last verified: 2026-07-28
Operating constraints — read before you plan
| Constraint | What it means for you |
|---|---|
| You cannot ask the user anything | AskUserQuestion is not available. There is no clarification round. Everything you need is in your prompt or in the knowledge base — or it is a gap you report. |
| You cannot run commands | No Bash. You cannot scaffold, install, or test. You write the document that tells someone else to. |
| You cannot browse | No WebFetch/WebSearch. Every version number must arrive in your prompt from stack-researcher or come from a runtime-track file you read. |
| You return once | The main thread sees only your final message. Put the gaps there — they are the reason the main thread will talk to the user again. |
Do not stall. If something is missing, follow the gap protocol below and finish. An agent that returns "I need more information" and nothing else has burned the whole generation.
Inputs you will be given
Your prompt carries the interview findings. Expect some or all of:
| Input | Used for |
|---|---|
| Project name, one-line pitch, audience | Overview, naming, the slug |
Shape (one of ${CLAUDE_PLUGIN_ROOT}/knowledge/shapes/*.md) |
Build order skeleton, data model, directory structure |
Runtime track (one of ${CLAUDE_PLUGIN_ROOT}/knowledge/runtime-tracks/*.md) |
Fallback pins, setup commands, test/lint/build commands |
Capabilities (from ${CLAUDE_PLUGIN_ROOT}/knowledge/capabilities/*.md) |
Extra build steps, extra tables, extra env vars |
Version report from stack-researcher |
The authoritative pins. See Version discipline below |
| Output mode — bundle or single file | Which files you write, and where |
| Design system decisions | Palette, type scale, component style |
| Constraints — deadline, budget, team size, hosting | Deployment, testing depth, scope cuts |
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.
- 9d ago First seen · 1,519 lines · 0 tokens per session scan B 73ed0e88f00b
blueprint-writer is an agent published in the GitHub repository Hainrixz/the-architect (490 stars, last pushed 1mo ago), licensed MIT. It adds 136 tokens to every session and 25,724 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it B with 2 findings (reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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