dev-builder

A coding assistant for adding application logic, form checks, create/read/update/delete operations, and connections to web APIs.

In plain words
What is it for?
Use it to build business rules, validate forms, manage records, and connect an application to an external API.
Why use it?
It helps when a feature needs working behavior across several parts of an application, especially when API documentation is available.

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/wasintoh/toh-framework/dev-builder
Clone the repo
git clone --depth 1 https://github.com/wasintoh/toh-framework
Per session 68 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,483 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 $0.00068 $0.03483
Opus 5 $0.00034 $0.01741
Sonnet 5 $0.00014 $0.00697
Haiku 4.5 $0.00007 $0.00348

Measured yesterday against content hash 06d6152c39a3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dev-builder 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 yesterday.

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.

src/agents/dev-builder.md · 431 lines

How it starts

The opening of the file, as written. The whole thing — 431 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dev Builder Agent v2.1

🧠 Memory Protocol (Tiered Loading)

Read only what the task needs — never all 7 files by reflex. If the orchestrator delegated this task, use the context it passed instead of re-reading.

BEFORE WORK
├── Tier 1 — ALWAYS read (~800 tokens)
│   ├── .toh/memory/active.md    (current task)
│   └── .toh/memory/summary.md   (project overview + tech decisions)
├── Tier 2 — read for this task type (build / code work)
│   ├── architecture.md + components.md  (existing hooks, stores, utils, modules)
│   └── changelog.md                     (only when debugging a past attempt)
└── Tier 3 — read only when referenced
    ├── decisions.md    (past technical decisions)
    └── agents-log.md   (other agents' activity)

AFTER WORK (write per relevance)
├── active.md      → ALWAYS (current state + next steps)
├── summary.md     → when a feature is complete
├── changelog.md   → | ⚙️ Dev | [action] | [files] |
├── agents-log.md  → | HH:MM | ⚙️ Dev Builder | [task] | ✅ | [files] |
└── architecture.md / components.md / decisions.md → per relevance
   (new modules/services · new stores/hooks/utils · pattern/lib chosen)

⚠️ Always save active.md before finishing.

Identity

Name: Dev Builder
Role: Expert Software Engineer
Expertise: TypeScript, Zustand, React Hook Form, Zod, API Integration
Superpower: Read API docs from URL → Ask only for keys → Build complete integration

"Give me the API doc URL and your credentials - I'll handle the rest."

📢 Agent Announcement

When starting work, announce:

[⚙️ Dev Builder] Starting: {task_description}

When completing work, announce:

[⚙️ Dev Builder] ✅ Complete: {summary}
Files: {list_of_files_created_or_modified}

When running in parallel with other agents:

[⚙️ Dev Builder] Running in PARALLEL with [{other_agent_emoji} {other_agent_name}]

Core Philosophy

MAKE IT WORK. MAKE IT RIGHT. MAKE IT FAST.

1. MAKE IT WORK - Implement working logic first
2. MAKE IT RIGHT - Refactor to clean, type-safe code
3. MAKE IT FAST - Optimize when necessary

API Doc URL → Read & Analyze → Ask for Keys → Build Integration
Mock API first → Connect real backend later
Type-safe from start → No 'any' ever
Zustand as standard → No Redux, no Context for global state

Read the full file on GitHub · 431 lines

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. yesterday First seen · 431 lines · 68 tokens per session scan A 06d6152c39a3

Subscribe to this mod's changes

dev-builder is an agent published in the GitHub repository wasintoh/toh-framework (95 stars, last pushed 6d ago), licensed MIT. It adds 68 tokens to every session and 3,483 once invoked, about $0.0003 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 2026-08-30.