step3-schematic

step3-schematic is a skill for Claude Code, Codex from raisoninme/boardless-pcb. It costs 20 tokens per session (954 once invoked), scanned A, original, MIT.

A guided workflow step for designing an electronics schematic, choosing components, and preparing a bill of materials (BOM), which lists the parts needed.

In plain words
What is it for?
Use it to select and audit components, connect the design to the frozen pin map, and produce or update the BOM.
Why use it?
It prevents schematic work from starting with missing project context or unfinished earlier steps. It also checks inherited parts and records cost, special-part, and substitution details.

Skill for Claude CodeCodex

Written for Claude Code and Codex: disable-model-invocation in frontmatter, but also agents/openai.yaml present. Also seen: mentions Claude Code.

Part of the boardless-pcb plugin — 10 skills, 1 agent shipped together

Good fit Use it to select and audit components, connect the design to the frozen pin map, and produce or update the BOM.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/raisoninme/boardless-pcb/step3-schematic
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.

Any agent
npx skills add raisoninme/boardless-pcb --skill step3-schematic
Clone the repo
git clone --depth 1 https://github.com/raisoninme/boardless-pcb

Made for: Claude Code, Codex.

Or install boardless-pcb, the plugin that ships this one along with the rest of its 10 skills, 1 agent.

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 step3-schematic

README.md
[![agentmods](https://agentmods.dev/badge/skills/raisoninme/boardless-pcb/step3-schematic.svg)](https://agentmods.dev/skills/raisoninme/boardless-pcb/step3-schematic)
Your own site
<a href="https://agentmods.dev/skills/raisoninme/boardless-pcb/step3-schematic"><img src="https://agentmods.dev/badge/skills/raisoninme/boardless-pcb/step3-schematic.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 954 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00020 $0.00954
Opus 5 $0.00010 $0.00477
Sonnet 5 $0.00004 $0.00191
Haiku 4.5 $0.00002 $0.00095

Measured 7d ago against content hash fb400b08bc90, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

step3-schematic 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 7d 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.

skills/step3-schematic/SKILL.md · 42 lines

How it starts

The opening of the file, as written. The whole thing — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Step 3 · Schematic design (incl. component selection)

Session & state check (before touching anything)

  1. One step per session: if this session already did substantive work for another step, stop and ask for a fresh session.
  2. Read docs/flow-state.md (canonical header line; foreign file → stop and ask). Missing → step1 first. Confirm step 2 is done; read the pin-map carrier (path in flow-state), docs/pinmap.md, docs/dev-plan.md. Not satisfied → stop and report.
  3. This step already done with no issue targeting it → re-run: ask intent first. Already in-progress → aborted or concurrent session: ask before proceeding. Marked rework → redo what the rework note requires, then wrap up.
  4. Issues-table entries with target step = 3 → fix mode.
  5. Set step 3 in-progress. Rebuild context from disk only.

Execute

Adopt-and-audit path: if flow-state/requirements record an inherited BOM, selection preference, or schematic (inherited: <path>), ingest it instead of re-selecting — then audit it per this step's own disciplines: budget-line contributions for every part, ★special-part flags, do-not-substitute identification; verified-rely-on parts get spot checks, new and changed parts get the full discipline. ERC and the netlist diff run regardless. The bar doesn't move; only the labor does.

Selection discipline

  • Cheap-first + mainstream mass-production parts; prefer parts your assembly service stocks free of loading/setup fees (e.g. JLC's "basic library"); recompute operating points whenever changing values or library tiers
  • With no physical verification available, RF goes on a pre-certified module, never a bare chip with self-routed RF
  • Before rejecting a part, verify the rejection's factual claims ("out of stock", "no SPICE model" often collapse under an online check)
  • Parameters that cannot be simulated (optics, aging, wear…) ship the vendor's conservative default
  • ★Special-part flags, each with a reason: pricey / thin stock / single compatible vendor / critical-path do-not-substitute / self-sourced
  • Parts whose datasheet worst-case values underpin the budget/review tables: no cheap substitution (swapping the part swaps out the evidence)
  • Check every part's contribution to each hard budget line in the plan (current, cost, height, …) line by line; any line over its cap → selection rollback (a part whose contribution cannot be closed at design time gets cut — e.g. an always-powered part with no credible quiescent-current figure)

Read the full file on GitHub · 42 lines

Files

What ships with it

1 file 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. 7d ago First seen · 42 lines · 20 tokens per session scan A fb400b08bc90

Subscribe to this mod's changes

step3-schematic is a skill published in the GitHub repository raisoninme/boardless-pcb (2 stars, last pushed 24d ago), licensed MIT. It adds 20 tokens to every session and 954 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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