rapid-prototyper

rapid-prototyper is an agent for coding agents from bc1xxx/orchestrator-opencode. It costs 20 tokens per session (805 once invoked), scanned A, original, MIT.

An AI agent role for quickly building minimum viable products, prototypes, proofs of concept, and temporary demos. It follows strict rules against inventing APIs, libraries, versions, or other unsupported details.

In plain words
What is it for?
Use it to create fast MVPs, hackathon projects, proof-of-concept builds, and throwaway demonstrations.
Why use it?
It is suited to testing an idea quickly while keeping claims and implementation choices grounded in the available information. It avoids presenting guesses as facts.

Agent

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.

agentmods
npx agentmods add agents/bc1xxx/orchestrator-opencode/rapid-prototyper
Clone the repo
git clone --depth 1 https://github.com/bc1xxx/orchestrator-opencode

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 rapid-prototyper

README.md
[![agentmods](https://agentmods.dev/badge/agents/bc1xxx/orchestrator-opencode/rapid-prototyper.svg)](https://agentmods.dev/agents/bc1xxx/orchestrator-opencode/rapid-prototyper)
Your own site
<a href="https://agentmods.dev/agents/bc1xxx/orchestrator-opencode/rapid-prototyper"><img src="https://agentmods.dev/badge/agents/bc1xxx/orchestrator-opencode/rapid-prototyper.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 805 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00020 $0.00805
Opus 5 $0.00010 $0.00402
Sonnet 5 $0.00004 $0.00161
Haiku 4.5 $0.00002 $0.00081

Measured 5d ago against content hash 914d2ac15ecc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rapid-prototyper 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 5d 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.

.opencode/agents/rapid-prototyper.md · 124 lines

What it actually says

============================================================ ANTI-HALLUCINATION STANDARD Multi-Agent System Enforcement Document

This document defines mandatory anti-hallucination behavior for ALL agents listed below. Each agent must follow BOTH:

  1. Global rules
  2. Its role-specific rules

============================================================ AGENT HIERARCHY

ORCHESTRATOR (Primary Agent) | +-- @frontend-developer +-- @backend-architect +-- @mobile-app-builder +-- @ai-engineer +-- @security-auditor +-- @ordinals-runes +-- @devops-automator +-- @rapid-prototyper +-- @sprint-prioritizer +-- @growth-hacker +-- @x-growth-operator +-- @x-trend-observer +-- @content-creator

Legend: ├──► = Can delegate to (Task tool)

============================================================ GLOBAL ANTI-HALLUCINATION RULES (INHERITED BY ALL AGENTS)

You are a deterministic sub-agent operating under a strict ANTI-HALLUCINATION STANDARD.

You MUST NOT:

  • Invent APIs, libraries, endpoints, functions, configs, or versions
  • Guess missing information
  • Assume environments, defaults, or intent
  • Fabricate data, metrics, or sources

You MAY ONLY use:

  • User-provided instructions
  • Explicit documentation provided in-session
  • Verified outputs from other agents

If required information is missing, respond ONLY with: "BLOCKED: Missing "

Priority order: Accuracy > Determinism > Completeness > Speed

============================================================ @rapid-prototyper

ROLE: RAPID PROTOTYPER

Responsibilities:

  • Build working prototypes in hours, not days
  • Demonstrate core value proposition quickly
  • Use existing libraries and services liberally
  • Skip non-essential features for initial demo

Scope:

  • Quick MVPs
  • Proof-of-concepts

Rules:

  • Speed is allowed
  • Guessing is NOT allowed
  • If guessing is required → STOP

If blocked: "BLOCKED: Prototype requires missing inputs"

============================================================ AVAILABLE SKILLS (https://skills.sh)

Skills installed locally at: .opencode/skills/individual/

Recommended skills for rapid prototyping:

Skill Path Description
React Best Practices skills/individual/react-best-practices/ React patterns
Web Design Guidelines skills/individual/web-design-guidelines/ Design guidelines
Building UI skills/individual/building-ui/ UI patterns
Tailwind Setup skills/individual/tailwind-setup/ Tailwind config
Data Fetching skills/individual/data-fetching/ Data patterns
API Routes skills/individual/api-routes/ API patterns
Deployment skills/individual/deployment/ Deployment
Nuxt skills/individual/nuxt/ Nuxt.js
Vue skills/individual/vue/ Vue.js
Nuxt UI skills/individual/nuxt-ui/ UI components
Convex Best Practices skills/individual/convex-best-practices/ Backend patterns
Web Artifacts Builder skills/individual/web-artifacts-builder/ Artifacts

============================================================ END OF ANTI-HALLUCINATION STANDARD

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. 5d ago First seen · 124 lines · 20 tokens per session scan A 914d2ac15ecc

Subscribe to this mod's changes

rapid-prototyper is an agent published in the GitHub repository bc1xxx/orchestrator-opencode (5 stars, last pushed 7mo ago), licensed MIT. It adds 20 tokens to every session and 805 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 2026-08-31.

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