What is tia.scaffold?

A builder for Siemens TIA Portal automation projects that turns a validated project specification into configured project objects and compiles the result.

Use it to build TIA projects from validated specifications, including devices, modules, network addresses, tags, program blocks, protection settings, and compilation.

It provides a repeatable way to create a project while checking prerequisites and stopping before the program is downloaded to a physical controller.

tia.scaffold — Skill for Claude Code by renanlido

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 renanlido/tia-harness --skill tia.scaffold

Clone the repo

git clone --depth 1 https://github.com/renanlido/tia-harness

Made for: Claude Code.

Or install tia-harness, the plugin that ships this one along with the rest of its 8 skills, 4 agents, 1 hook.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/renanlido/tia-harness/tia.scaffold/github.svg)](https://agentmods.dev/skills/renanlido/tia-harness/tia.scaffold)

Your own site

<a href="https://agentmods.dev/skills/renanlido/tia-harness/tia.scaffold"><img src="https://agentmods.dev/badge/skills/renanlido/tia-harness/tia.scaffold/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/renanlido/tia-harness/tia.scaffold"><img src="https://agentmods.dev/badge/skills/renanlido/tia-harness/tia.scaffold.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 189 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,356 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.

Model	Per session	Once invoked
Fable 5.1	$0.00189	$0.01356
Opus 5	$0.00095	$0.00678
Sonnet 5	$0.00038	$0.00271
Haiku 4.5	$0.00019	$0.00136

Measured 12d ago against content hash 7b75b6c404df, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

tia.scaffold 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 12d 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.

codex/skills/tia.scaffold/SKILL.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

tia.scaffold — create a project from a spec (class M-off)

Execute the offline build pipeline that turns a validated project-spec into real TIA objects, compliant-by-construction (optimized access, symbolic, UDTs, naming) and ending compile-clean. It is class M-off: it mutates the project offline through the tia MCP, but it never touches the physical controller — it stops before download (G3).

Preconditions (do not skip)

A project must be OPEN. Check tia_status → hasProject:true. Opening/creating one is a GATE (G1, trust dialog) — use tia_project_create (new) or tia_connect (existing); if the first connect blocks on the trust dialog, that is the human handoff (tia.start headless → tia_show_ui → human confirms → tia_connect). Do not loop/retry.
The spec must be VALID. Run spec.validate / tia_spec_validate first; never build an invalid spec. Then spec.plan to review the ordered steps.
Resolve real order numbers. Each typeIdentifier should be confirmed against tia_catalog (OrderNumber:<MLFB>/V<fw>, slash not :V) — cpu.select proposes, catalog confirms.

Inputs / tools (class M-off + the M5 orchestrator)

tia_spec_apply — the orchestrator: validate → G5 → subnets → devices → modules → network → tag tables → tags → block shells → compile, stopping at the first error (dryRun:true returns the plan; continueOnError to push through). Preferred path.
Or the step-by-step M-off tools (when the spec maps imperfectly): tia_subnet_create, tia_device_create, tia_device_plug, tia_network_connect, tia_tagtable_create, tia_tag_create, tia_fb_create, tia_instancedb_create, tia_type_group_create; code via tia_source_put (SCL) / tia_import_xml (LAD/FBD/GRAPH) / tia_types_import (UDTs before the blocks that use them).
Protection recipe (RECIPES.md): tia_obj_roots/tia_obj_items → CPU handle → tia_obj_service (PlcMasterSecretConfigurator) → tia_obj_invoke Protect + tia_obj_set_attributes PlcProtectionAccessLevel=FullAccess.
tia_compile (verifier), tia_project_save.

Read the full file on GitHub · 81 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.

RECIPES.md 11 KB

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.

12d ago First seen · 81 lines · 189 tokens per session scan A 7b75b6c404df

Subscribe to this mod's changes

tia.scaffold is a skill published in the GitHub repository renanlido/tia-harness (5 stars, last pushed 1mo ago), licensed MIT. It adds 189 tokens to every session and 1,356 once invoked, about $0.0009 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.

Claude Code Hardware and IoT automation iec-61131-3 industrial-automation mcp openness

tia.scaffold

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

tia.scaffold — create a project from a spec (class M-off)

Preconditions (do not skip)

Inputs / tools (class M-off + the M5 orchestrator)

What ships with it

What this file has done since we first saw it

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