constraint-guided-plan-validator

constraint-guided-plan-validator is a skill for Claude Code, Codex from AnthonyAlcaraz/agentic-graph-rag-skills. It costs 196 tokens per session (1,817 once invoked), scanned A, original, MIT.

A plan checker that compares proposed work with extracted business rules, domain constraints, and the actions an agent is allowed to perform.

In plain words
What is it for?
Use it to score plans, identify problematic steps, and provide feedback for refining plans below the required score.
Why use it?
It catches plans that break rules, require unavailable permissions, or describe operations that do not make sense before execution.

Skill for Claude CodeCodex

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

Good fit Use it to score plans, identify problematic steps, and provide feedback for refining plans below the required score.

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Install with agentmods
npx agentmods add skills/anthonyalcaraz/agentic-graph-rag-skills/constraint-guided-plan-validator
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 AnthonyAlcaraz/agentic-graph-rag-skills --skill constraint-guided-plan-validator
Clone the repo
git clone --depth 1 https://github.com/AnthonyAlcaraz/agentic-graph-rag-skills

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 constraint-guided-plan-validator

README.md
[![agentmods](https://agentmods.dev/badge/skills/anthonyalcaraz/agentic-graph-rag-skills/constraint-guided-plan-validator/github.svg)](https://agentmods.dev/skills/anthonyalcaraz/agentic-graph-rag-skills/constraint-guided-plan-validator)
Your own site
<a href="https://agentmods.dev/skills/anthonyalcaraz/agentic-graph-rag-skills/constraint-guided-plan-validator"><img src="https://agentmods.dev/badge/skills/anthonyalcaraz/agentic-graph-rag-skills/constraint-guided-plan-validator/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 constraint-guided-plan-validator

Your own site · 80×15
<a href="https://agentmods.dev/skills/anthonyalcaraz/agentic-graph-rag-skills/constraint-guided-plan-validator"><img src="https://agentmods.dev/badge/skills/anthonyalcaraz/agentic-graph-rag-skills/constraint-guided-plan-validator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 196 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,817 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 $0.00196 $0.01817
Opus 5 $0.00098 $0.00908
Sonnet 5 $0.00039 $0.00363
Haiku 4.5 $0.00020 $0.00182

Measured 10d ago against content hash ccec3517cd0d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

constraint-guided-plan-validator 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 10d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (cli.py, lib.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/reasoning-planning/constraint-guided-plan-validator/SKILL.md · 141 lines

How it starts

The opening of the file, as written. The whole thing — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Constraint-Guided Plan Validator

Overview

In regulated environments a planning node must ensure plans respect domain constraints and business rules before committing to execution (Example 5-14): extract the constraints from the request, generate the plan, validate, and if validation fails, refine with the validator's feedback. The chapter pairs this with two further gates:

  • Capability-model filter (DevOps hypothesis-formation node): the agent's operational boundaries are queryable data specifying which actions it may perform and at what privilege. "A hypothesis requiring direct database access gets filtered if the agent only has read-only monitoring permissions." This prevents proposing investigations it cannot execute.
  • Ontological grounding: domain/range validation rejects operations that are syntactically valid but semantically nonsensical before they corrupt the decision.

This skill validates a plan against extracted constraints and a capability model, returning a 0..1 conformance score plus structured per-step feedback. Below threshold (0.8) the plan should be refined and re-validated. Forbidden-action and capability violations are hard: any single one forces passed=False no matter the score — a plan the agent cannot legally execute is not "mostly fine."

In the DevOps latency investigation (account 123456789012), the agent holds read-only monitoring permissions. A remediation plan whose step proposes modify_db (write privilege) fails the capability gate and is sent back to the planner; a plan that proposes only query_metrics and read_logs (read) with the required record_incident step, within the 30-day emergency regulatory deadline, passes.

When to Use

  • Regulated / capability-bounded environments (insurance, healthcare, finance, privileged DevOps)
  • A planning node must gate plans against business rules and operational authority before any action runs
  • You want a refine-on-low-score loop driven by structured feedback

Read the full file on GitHub · 141 lines

Files

What ships with it

2 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. 10d ago First seen · 141 lines · 196 tokens per session scan A ccec3517cd0d

Subscribe to this mod's changes

constraint-guided-plan-validator is a skill published in the GitHub repository AnthonyAlcaraz/agentic-graph-rag-skills (10 stars, last pushed 1mo ago), licensed MIT. It adds 196 tokens to every session and 1,817 once invoked, about $0.0010 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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