agentmods.dev

prose

prose is a skill for Claude Code, Codex from SeanHogg/Builderforce.ai. It costs 36 tokens per session (3,558 once invoked), scanned A, a copy of prose, MIT.

A skill pack for OpenProse, a programming language for describing AI-session workflows. It maps workflow actions such as running agents, reading files, and fetching remote data to available tools.

In plain words
What is it for?
Use it when running prose commands, working with .prose files, using OpenProse, or creating workflows that coordinate several AI agents.
Why use it?
It lets prose commands and workflow files be interpreted as repeatable multi-agent sessions, rather than handled as ordinary text.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

not rated 5 2d ago A scan 36 tokens copy · 95% MIT
View the source file SeanHogg/Builderforce.ai
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 skills/seanhogg/builderforce.ai/prose
Any agent
npx skills add SeanHogg/Builderforce.ai --skill prose
Clone the repo
git clone --depth 1 https://github.com/SeanHogg/Builderforce.ai

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 prose

README.md
[![agentmods](https://agentmods.dev/badge/skills/seanhogg/builderforce.ai/prose.svg)](https://agentmods.dev/skills/seanhogg/builderforce.ai/prose)
Your own site
<a href="https://agentmods.dev/skills/seanhogg/builderforce.ai/prose"><img src="https://agentmods.dev/badge/skills/seanhogg/builderforce.ai/prose.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,558 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin 95% copy Near-identical to another mod 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 $0.00036 $0.03558
Opus 5 $0.00018 $0.01779
Sonnet 5 $0.00007 $0.00712
Haiku 4.5 $0.00004 $0.00356

Measured 5d ago against content hash d0e1e9564902, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

prose scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- **Remote fetch** == BuilderForceAgents `web_fetch` (or `exec` with curl when POST is required)
Origin

This is a copy

95% identical to prose — 10 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agent-runtime/extensions/open-prose/skills/prose/SKILL.md · 324 lines

How it starts

The opening of the file, as written. The whole thing — 324 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OpenProse Skill

OpenProse is a programming language for AI sessions. LLMs are simulators—when given a detailed system description, they don't just describe it, they simulate it. The prose.md specification describes a virtual machine with enough fidelity that a Prose Complete system reading it becomes that VM. Simulation with sufficient fidelity is implementation. You are the Prose Complete system.

BuilderForceAgents Runtime Mapping

  • Task tool in the upstream spec == BuilderForceAgents sessions_spawn
  • File I/O == BuilderForceAgents read/write
  • Remote fetch == BuilderForceAgents web_fetch (or exec with curl when POST is required)

When to Activate

Activate this skill when the user:

  • Uses ANY prose command (e.g., prose boot, prose run, prose compile, prose update, prose help, etc.)
  • Asks to run a .prose file
  • Mentions "OpenProse" or "prose program"
  • Wants to orchestrate multiple AI agents from a script
  • Has a file with session "..." or agent name: syntax
  • Wants to create a reusable workflow

Command Routing

When a user invokes prose <command>, intelligently route based on intent:

Command Action
prose help Load help.md, guide user to what they need
prose run <file> Load VM (prose.md + state backend), execute the program
prose run handle/slug Fetch from registry, then execute (see Remote Programs below)
prose compile <file> Load compiler.md, validate the program
prose update Run migration (see Migration section below)
prose examples Show or run example programs from examples/
Other Intelligently interpret based on context

Read the full file on GitHub · 324 lines

Files

What ships with it

60 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.

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 · 324 lines · 36 tokens per session scan A d0e1e9564902

Subscribe to this mod's changes

prose is a skill published in the GitHub repository SeanHogg/Builderforce.ai (5 stars, last pushed 2d ago), licensed MIT. It adds 36 tokens to every session and 3,558 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 95% identical to prose, differing in 10 lines, and is treated as a copy.

Building agents
Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

local-ai-agents

Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…

microsoft/ai-agents-for-beginners · 200 tokens

next-cache-components-adoption

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…

vercel/next.js · 95 tokens

next-cache-components-optimizer

Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to green, one verified route at a time; the shipped test then…

vercel/next.js · 170 tokens

next-partial-prefetching-adoption

Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the partialPrefetching flag, opt routes in with export const prefetch = 'partial', audit Link prefetch={true} behavior, preserve existing prefetched UI with…

vercel/next.js · 103 tokens

chronicle

Analyze Copilot session history for standup reports, usage tips, session search, and session reindexing. Use when the user asks for a standup, daily summary, usage tips, workflow recommendations, wants to search or find past sessions by keyword/file/PR, wants to reindex their session store, or asks about deleting…

microsoft/vscode · 72 tokens