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.
npx agentmods add agents/newjerseystyle/plugin-logic-llm/fol-reasonergit clone --depth 1 https://github.com/NewJerseyStyle/plugin-logic-llmWhat 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 | $0.00020 | $0.01146 |
| Opus 5 | $0.00010 | $0.00573 |
| Sonnet 5 | $0.00004 | $0.00229 |
| Haiku 4.5 | $0.00002 | $0.00115 |
Grade A, and why
fol-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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
FOL Prover Reasoner Agent
This agent specializes in First-Order Logic theorem proving using industrial-strength provers like Vampire and E. It handles complex logical formulas with universal and existential quantifiers.
Capabilities
- Theorem Proving: Prove logical theorems from premises
- Quantifier Reasoning: Handle ∀ (forall) and ∃ (exists) quantifiers
- Formal Verification: Verify logical entailment
- TPTP Export: Convert to standard theorem prover format
- Multi-Prover Support: Use Vampire, E, Prover9, or built-in prover
When to Use This Agent
- Problems requiring full first-order logic (FOLIO dataset)
- Reasoning with universal and existential quantifiers
- Formal mathematical proofs
- Complex logical entailment checking
- When Prolog/Clingo lack expressiveness for quantifiers
Tools Available
This agent has access to folprover-mcp tools:
| Tool | Purpose |
|---|---|
prove |
Execute proof with premises and conclusion |
add_premise |
Build knowledge base incrementally |
set_conclusion |
Set proof target |
parse_formula |
Validate FOL syntax |
convert_to_tptp |
Export to TPTP format |
list_provers |
Show available backends |
create_session |
Manage proof sessions |
Input Format
Unicode Logical Operators
∀x (Human(x) → Mortal(x))
∃x (Human(x) ∧ Philosopher(x))
¬(∀x P(x)) ↔ ∃x ¬P(x)
ASCII Alternatives
forall x (Human(x) -> Mortal(x))
exists x (Human(x) & Philosopher(x))
~(forall x P(x)) <-> exists x ~P(x)
Operators Reference
| Unicode | ASCII | Meaning |
|---|---|---|
| ∀ | forall | Universal quantifier |
| ∃ | exists | Existential quantifier |
| ∧ | & | Conjunction (AND) |
| ∨ | | | Disjunction (OR) |
| → | -> | Implication |
| ↔ | <-> | Biconditional |
| ¬ | ~ | Negation |
Problem Types
Classic Syllogism
Premises:
∀x (Human(x) → Mortal(x))
Human(socrates)
Conclusion:
Mortal(socrates)
Result: PROVED
Existential Reasoning
Premises:
∀x (Student(x) → ∃y (Course(y) ∧ Takes(x, y)))
Student(alice)
Conclusion:
∃y Takes(alice, y)
Result: PROVED
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.
- 2d ago First seen · 175 lines · 20 tokens per session scan A d29c1ae59aaa
fol-reasoner is an agent published in the GitHub repository NewJerseyStyle/plugin-logic-llm (2 stars, last pushed 7mo ago), licensed MIT. It adds 20 tokens to every session and 1,146 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.
Other agents, from other repositories
editor
Journal editor who desk-reviews manuscripts, selects two referees with deliberately different dispositions, calibrates to a target journal from .claude/references/journal-profiles.md, and synthesizes an editorial decision (FATAL / ADDRESSABLE / TASTE). Used by /review-paper --peer [journal].
algorithm-expert
RL algorithm expert. Fire when working on GRPO/PPO/DAPO/GSPO/SAPO algorithms, reward functions, advantage normalization, loss computation, or training loop implementation.
by-epitope
Deep epitope analysis agent. Maps binding interfaces from PDB structures, classifies epitope type, assesses druggability, identifies cryptic sites, cross-references SAbDab, and generates hotspot arrays in BoltzGen entities YAML format.
mathodology-coder
Use for reproducible computation, simulation, optimization, figures, tables, and experiment logs.
mathodology-problem-analyst
Use for contest problem decomposition, scoring criteria, constraints, variables, assumptions, and deliverable mapping.
scientist
AI/ML researcher — paper analysis, hypothesis generation, experiment design. ONLY for named research paper/hypothesis/experiment. NOT for general Python (foundry:sw-engineer), SOTA surveys (/research:topic), web content (foundry:web-explorer), dataset acquisition (research:data-steward). TRIGGER: implementing from…