mate-explore-change

mate-explore-change is a skill for Claude Code from uniqbit-ag/mate-cli. It costs 58 tokens per session (576 once invoked), scanned A, original, MIT.

A change-exploration workflow that investigates a proposed software change using the relevant repository and area of a monorepo, a repository containing multiple projects.

In plain words
What is it for?
Use it to explore or investigate a change before writing a formal proposal, including its scope, open questions, and possible slices.
Why use it?
It keeps the investigation focused on the correct part of a large codebase and flags features that should be split into smaller changes.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to explore or investigate a change before writing a formal proposal, including its scope, open questions, and possible slices.

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Install with agentmods
npx agentmods add skills/uniqbit-ag/mate-cli/mate-explore-change
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 uniqbit-ag/mate-cli --skill mate-explore-change
Clone the repo
git clone --depth 1 https://github.com/uniqbit-ag/mate-cli

Made for: Claude Code.

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 mate-explore-change

README.md
[![agentmods](https://agentmods.dev/badge/skills/uniqbit-ag/mate-cli/mate-explore-change/github.svg)](https://agentmods.dev/skills/uniqbit-ag/mate-cli/mate-explore-change)
Your own site
<a href="https://agentmods.dev/skills/uniqbit-ag/mate-cli/mate-explore-change"><img src="https://agentmods.dev/badge/skills/uniqbit-ag/mate-cli/mate-explore-change/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 mate-explore-change

Your own site · 80×15
<a href="https://agentmods.dev/skills/uniqbit-ag/mate-cli/mate-explore-change"><img src="https://agentmods.dev/badge/skills/uniqbit-ag/mate-cli/mate-explore-change.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 576 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 $0.00058 $0.00576
Opus 5.5 $0.00023 $0.00230
Sonnet 5.5 $0.00012 $0.00115
Haiku 4.5 $0.00006 $0.00058

Measured today against content hash 9cd07f9ee90c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mate-explore-change 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 today.

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.

packages/mate-core/src/templates/mate-skills/agents/mate-explore-change/SKILL.md · 51 lines

How it starts

The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mate Explore Change

The Explore change stage of the Delivery Path. It runs the OpenSpec explore workflow and adds two things: the scope comes from the companion context map, and a feature too large for one change is suggested as several.

Steps

  1. Follow the OpenSpec workflow. Read references/openspec-explore.md and follow it for the exploration itself. When a PRE-EXPLORE HANDOFF block is in this conversation, treat its Confirmed points as settled and start from its Unresolved questions and Assumptions.

  2. Resolve scope from the context map. Before reading code, identify the canonical Working Repository (org/repository from its Git remote) and the repository-relative Area (the owning package root in a monorepo). Read the Companion Repository's CONTEXT-MAP.md, then only the repository-scoped map for that Working Repository, and load only the contexts it maps to that Area. Use their vocabulary in the exploration. When the map has no entry for the Area, say so instead of borrowing another Area's context.

  3. Suggest slicing when the feature is large. Slicing test: a feature needs slicing when it spans several Areas, several independent behaviours, or more work than one review can hold (roughly more than 10 tasks or 400 changed lines). Several Areas that only work together stay one change with a scope per Area. When the explored direction passes the test, propose slices: one change per slice, each reviewable and archivable on its own, in dependency order. Name the dependencies between slices; they become dependsOn entries when the changes are proposed. Several slices may share one delivery branch. Slicing is a suggestion; the user decides.

  4. Hand off. End by naming /mate-propose-change as the next step, once per agreed slice. Do not invoke it.

Boundary

Exploration writes no product code. Agent artifacts written while exploring go to the Companion Repository, never the Working Repository.

Read the full file on GitHub · 51 lines

Files

What ships with it

1 file 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. today First seen · 51 lines · 58 tokens per session scan A 9cd07f9ee90c

Subscribe to this mod's changes

mate-explore-change is a skill published in the GitHub repository uniqbit-ag/mate-cli (12 stars, last pushed today), licensed MIT. It adds 58 tokens to every session and 576 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-30.

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