by:welcome

by:welcome is a command for Claude Code from 001TMF/blatant-why. It costs 16 tokens per session (739 once invoked), scanned A, original, MIT.

A first-run guide for BY, a protein-design tool that helps create nanobodies, antibodies, and other proteins that bind to a chosen target.

In plain words
What is it for?
It explains how to start a binder-design campaign, research a target first, or check the working environment.
Why use it?
It gives new users a clear starting point without requiring them to understand BY’s internal workflows.

Command for Claude Code

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 commands/001tmf/blatant-why/welcome
Clone the repo
git clone --depth 1 https://github.com/001TMF/blatant-why

Made for: Claude Code.

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 by:welcome

README.md
[![agentmods](https://agentmods.dev/badge/commands/001tmf/blatant-why/welcome.svg)](https://agentmods.dev/commands/001tmf/blatant-why/welcome)
Your own site
<a href="https://agentmods.dev/commands/001tmf/blatant-why/welcome"><img src="https://agentmods.dev/badge/commands/001tmf/blatant-why/welcome.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 739 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 $0.00016 $0.00739
Opus 5 $0.00008 $0.00369
Sonnet 5 $0.00003 $0.00148
Haiku 4.5 $0.00002 $0.00074

Measured 5d ago against content hash 5b03c2cbd9b1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

by:welcome 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.

templates/.claude/commands/by/welcome.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/welcome — First-Run Orientation

Introduce BY to a new user and surface the core workflows without overwhelming them with internal complexity.

Instructions

Step 1: Check if this is a first run

Read .by/environment.json. If it does not exist, this is likely a fresh install. Note the result for Step 3 and Step 4.

Step 2: Display welcome message

Present the following orientation:


Welcome to BY (Blatant-Why)

BY is a protein design agent that helps you design nanobodies, antibodies, and protein binders. You describe a target, BY handles the computation.

Getting Started (pick one)

1. Design nanobodies against a target

Example: "Design VHH nanobodies against PD-L1"

BY will research your target, ask a few quick questions about your preferences, then run the full design-screen-rank pipeline. You get back a ranked table of candidates ready for lab testing.

2. Load and explore a target first

Example: /by:load PD-L1 or /by:load 5JDS

Research a protein target before committing to a design campaign. BY pulls structural data, known binders, and epitope information so you can make an informed decision.

3. Check your environment

Example: /by:setup

See what compute providers are available and which API keys are configured. Useful if you want to confirm Tamarind Bio access or check for local GPU tools.

4. Resume an existing campaign

Example: /by:status then /by:results

Check the state of a running campaign or view ranked designs from a completed one.

Key Commands

Command What it does
/by:plan-campaign Quick discussion to capture your design preferences before launching
/by:load Research a protein target (structure, known binders, epitopes)
/by:status Check current campaign progress
/by:results View ranked design candidates with scores
/by:setup Configure compute providers and API keys

What happens behind the scenes

BY uses specialized MCP tools to search protein databases (PDB, UniProt, SAbDab), run structure predictions and design computations via Tamarind Bio cloud (free tier available), and score candidates with custom metrics (ipSAE for interface quality, ipTM for global confidence). You do not need to manage any of this -- just describe what you want.

Read the full file on GitHub · 85 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. 5d ago First seen · 85 lines · 16 tokens per session scan A 5b03c2cbd9b1

Subscribe to this mod's changes

by:welcome is a command published in the GitHub repository 001TMF/blatant-why (114 stars, last pushed 19d ago), licensed MIT. It adds 16 tokens to every session and 739 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 2026-08-30.