specification-to-temporal-logic-generator

specification-to-temporal-logic-generator is a skill for Claude Code, Codex from ArabelaTso/Skills-4-SE. It costs 112 tokens per session (1,485 once invoked), scanned A, original, Apache-2.0.

A tool that turns written requirements into formal time-based rules, such as conditions that must always hold or events that must eventually happen. These rules can be checked by formal verification and model-checking tools.

In plain words
What is it for?
Use it to describe safety, liveness, response, ordering, and fairness requirements for software, embedded systems, or hardware.
Why use it?
It helps convert vague natural-language requirements into precise properties that can be tested against a system model.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to describe safety, liveness, response, ordering, and fairness requirements for software, embedded systems, or hardware.

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Install with agentmods
npx agentmods add skills/arabelatso/skills-4-se/specification-to-temporal-logic-generator
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 ArabelaTso/Skills-4-SE --skill specification-to-temporal-logic-generator
Clone the repo
git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SE

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 specification-to-temporal-logic-generator

README.md
[![agentmods](https://agentmods.dev/badge/skills/arabelatso/skills-4-se/specification-to-temporal-logic-generator/github.svg)](https://agentmods.dev/skills/arabelatso/skills-4-se/specification-to-temporal-logic-generator)
Your own site
<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/specification-to-temporal-logic-generator"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/specification-to-temporal-logic-generator/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.

agentmods 80×15 button for specification-to-temporal-logic-generator

Your own site · 80×15
<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/specification-to-temporal-logic-generator"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/specification-to-temporal-logic-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 112 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,485 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00112 $0.01485
Opus 5 $0.00056 $0.00743
Sonnet 5 $0.00022 $0.00297
Haiku 4.5 $0.00011 $0.00148

Measured 9d ago against content hash 801d35ad1828, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

specification-to-temporal-logic-generator 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 9d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/convert_format.py, scripts/validate_formula.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/specification-to-temporal-logic-generator/SKILL.md · 192 lines

How it starts

The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Specification-to-Temporal-Logic Generator

Translate natural-language requirements into formal temporal logic properties for model checking and formal verification.

Workflow

1. Parse Input Requirements

Extract requirements from natural language text, structured documents, or semi-formal notations.

Identify key elements:

  • Events/Actions: What happens (e.g., "request", "response", "button_press")
  • States/Conditions: System states (e.g., "authenticated", "locked", "idle")
  • Temporal relationships: When things happen (e.g., "always", "eventually", "before")
  • Quantification: Scope (e.g., "every", "some", "at least once")

2. Identify Property Type

Classify requirements:

Safety (something bad never happens): Keywords "never", "always not", "must not" → G(!bad_event)

Liveness (something good eventually happens): Keywords "eventually", "will", "guaranteed" → F(good_event)

Response (if X then eventually Y): Keywords "whenever", "if...then", "leads to" → G(X -> F Y)

Precedence (X before Y): Keywords "before", "precedes", "only after" → (!Y) U X

Fairness (repeated opportunities): Keywords "infinitely often", "repeatedly" → G F X

3. Handle Ambiguities

When requirements are ambiguous:

Check common ambiguities: temporal scope, quantification, ordering, duration

Ask clarifying questions:

"The system responds to requests" could mean:
1. Every request eventually gets a response: G(request -> F response)
2. Some requests get responses: EF(request && response)
Which interpretation matches your intent?

State assumptions explicitly:

Formula: G(request -> F response)
Assumptions:
- "Every request" means all requests (universal quantification)
- "Responds" means eventually, with no time bound

See ambiguity_resolution.md for detailed patterns.

4. Select Appropriate Logic

Use LTL for single execution paths, "infinitely often" (G F), "eventually forever" (F G)

Read the full file on GitHub · 192 lines

Files

What ships with it

6 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. 9d ago First seen · 192 lines · 112 tokens per session scan A 801d35ad1828

Subscribe to this mod's changes

specification-to-temporal-logic-generator is a skill published in the GitHub repository ArabelaTso/Skills-4-SE (252 stars, last pushed 22d ago), licensed Apache-2.0. It adds 112 tokens to every session and 1,485 once invoked, about $0.0006 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 2026-09-03.

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