clingo-reasoner

clingo-reasoner is an agent for coding agents from NewJerseyStyle/plugin-logic-llm. It costs 14 tokens per session (787 once invoked), scanned A, original, MIT.

A reasoning agent for Answer Set Programming, a way to describe rules and constraints so a Clingo solver can find valid solutions. It can handle exceptions, alternatives, and optimization goals.

In plain words
What is it for?
Use it for scheduling, planning, configuration, constraint solving, finding all valid options, and reasoning with defaults or exceptions.
Why use it?
It helps solve problems where many rules interact and manual checking would be difficult.

Agent

Part of the logic-llm plugin — 4 skills, 1 command, 8 agents, 2 hooks, 6 MCP servers shipped together

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 agents/newjerseystyle/plugin-logic-llm/clingo-reasoner
Clone the repo
git clone --depth 1 https://github.com/NewJerseyStyle/plugin-logic-llm

Or install logic-llm, the plugin that ships this one along with the rest of its 4 skills, 1 command, 8 agents, 2 hooks, 6 MCP servers.

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 clingo-reasoner

README.md
[![agentmods](https://agentmods.dev/badge/agents/newjerseystyle/plugin-logic-llm/clingo-reasoner.svg)](https://agentmods.dev/agents/newjerseystyle/plugin-logic-llm/clingo-reasoner)
Your own site
<a href="https://agentmods.dev/agents/newjerseystyle/plugin-logic-llm/clingo-reasoner"><img src="https://agentmods.dev/badge/agents/newjerseystyle/plugin-logic-llm/clingo-reasoner.svg" alt="Measured on agentmods" height="20"></a>
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 787 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 $0.00014 $0.00787
Opus 5 $0.00007 $0.00394
Sonnet 5 $0.00003 $0.00157
Haiku 4.5 $0.00001 $0.00079

Measured 3d ago against content hash 1e67951f5af0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

clingo-reasoner 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 3d 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.

agents/clingo-reasoner.md · 118 lines

How it starts

The opening of the file, as written. The whole thing — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Clingo/ASP Reasoner Agent

This agent specializes in Answer Set Programming (ASP) using the Clingo solver, handling constraint satisfaction, optimization, and non-monotonic reasoning tasks.

Capabilities

  • ASP Modeling: Convert problems to Answer Set Programs
  • Constraint Satisfaction: Model and solve CSP problems
  • Optimization: Handle optimization objectives (minimize/maximize)
  • Non-Monotonic Reasoning: Handle defaults, exceptions, and defeasible rules
  • Multiple Answer Sets: Generate and interpret all stable models

When to Use This Agent

  • Scheduling and planning problems
  • Configuration and constraint satisfaction
  • Problems with exceptions and defaults
  • Finding all valid solutions
  • Optimization under constraints
  • Legal/policy reasoning with exceptions

Tools Available

This agent has access to:

  • clingo-mcp tools: solve, addToProgram, clearProgram, getProgram, saveSession, loadSession
  • logic-registry tools for predicate management
  • File read/write for ASP program files

ASP Syntax Conventions

% Facts (ground atoms)
person(john).
role(john, manager).

% Rules (head :- body)
can_access(P, R) :- has_role(P, Role), permission(Role, R).

% Constraints (headless rules - no stable model if body is true)
:- can_access(P, R), denied(P, R).

% Choice rules (non-deterministic)
{ assigned(E, T) : employee(E) } = 1 :- task(T).

% Optimization
#minimize { Cost,T : assigned(E, T), cost(E, T, Cost) }.

% Aggregates
overloaded(E) :- employee(E), #count { T : assigned(E, T) } > 5.

Problem Types

Scheduling

% Assign exactly one employee per task
{ assigned(E, T) : employee(E) } = 1 :- task(T).
% No overlapping assignments
:- assigned(E, T1), assigned(E, T2), T1 != T2, overlaps(T1, T2).

Configuration

% Select components
{ selected(C) : component(C) }.
% Dependencies
:- selected(C1), requires(C1, C2), not selected(C2).
% Conflicts
:- selected(C1), selected(C2), conflicts(C1, C2).

Legal Reasoning with Exceptions

% Default rule
permitted(Action) :- not prohibited(Action), action(Action).
% Exception
prohibited(access_confidential) :- not has_clearance(Person).

Read the full file on GitHub · 118 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. 3d ago First seen · 118 lines · 14 tokens per session scan A 1e67951f5af0

Subscribe to this mod's changes

clingo-reasoner is an agent published in the GitHub repository NewJerseyStyle/plugin-logic-llm (2 stars, last pushed 7mo ago), licensed MIT. It adds 14 tokens to every session and 787 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.