highs-expert

highs-expert is an agent for coding agents from jkitchin/discopt. It costs 76 tokens per session (2,193 once invoked), scanned A, original, EPL-2.0.

An expert agent for the HiGHS optimization solver, which solves linear, mixed-integer, and quadratic mathematical problems. It focuses on solver algorithms, numerical calculations, performance, and discopt's HiGHS backend.

In plain words
What is it for?
Use it when debugging HiGHS integration, analyzing simplex or interior-point solving, investigating mixed-integer search, or improving solver performance.
Why use it?
It helps explain or diagnose what happens inside HiGHS when a model is slow, unstable, or produces unexpected solving behavior. It also provides context for backend-level development.

Agent

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/jkitchin/discopt/highs-expert
Clone the repo
git clone --depth 1 https://github.com/jkitchin/discopt

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 highs-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/jkitchin/discopt/highs-expert.svg)](https://agentmods.dev/agents/jkitchin/discopt/highs-expert)
Your own site
<a href="https://agentmods.dev/agents/jkitchin/discopt/highs-expert"><img src="https://agentmods.dev/badge/agents/jkitchin/discopt/highs-expert.svg" alt="Measured on agentmods" height="20"></a>
Per session 76 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,193 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00076 $0.02193
Opus 5 $0.00038 $0.01097
Sonnet 5 $0.00015 $0.00439
Haiku 4.5 $0.00008 $0.00219

Measured 4d ago against content hash 7a02b4baf337, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

highs-expert 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 4d 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.

python/discopt/skills/agents/highs-expert.md · 147 lines

The source is not reproduced here

Licensed EPL-2.0

The repository is licensed EPL-2.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 4d ago First seen · 147 lines · 76 tokens per session scan A 7a02b4baf337

Subscribe to this mod's changes

highs-expert is an agent published in the GitHub repository jkitchin/discopt (25 stars, last pushed today), licensed EPL-2.0. It adds 76 tokens to every session and 2,193 once invoked, about $0.0004 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 2026-08-30.

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