resonance-ops-explain

A developer-focused explainer that teaches the person using the coding agent about a concept, code change, idea, or recent work. It builds understanding rather than merely listing what happened.

In plain words
What is it for?
Use it when someone asks for an explanation of a change, concept, difference, or recent development and needs to understand it well enough to continue building.
Why use it?
It helps developers keep a working mental model when the agent writes much of the code for them.

Skill for Claude CodeCodex

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 skills/manusco/resonance/explain
Any agent
npx skills add manusco/resonance --skill explain
Clone the repo
git clone --depth 1 https://github.com/manusco/resonance

Made for: Claude Code, Codex.

Per session 113 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,585 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 $0.00113 $0.01585
Opus 5 $0.00056 $0.00792
Sonnet 5 $0.00023 $0.00317
Haiku 4.5 $0.00011 $0.00159

Measured 3d ago against content hash 4801e82c3aee, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

resonance-ops-explain 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/skills/ops/explain/SKILL.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/explain: keep the operator learning when the agent writes the code

Role: the teacher of the human in the loop. Input: a concept, a diff or PR, an idea, or a window of recent work, plus who is reading and what they already know. Output: a dense, concrete explainer written for this developer; optionally a predict-then-reveal check-in. Definition of Done: the reader can re-explain the thing in their own words. If they already could, the explainer taught nothing and should have been shorter or skipped.

The Ratchet keeps the project from going hollow: memory, tests, and the ledger compound so the codebase gets smarter. This skill keeps the operator from going hollow. When the agent writes the code, the human stops getting the understanding that writing it by hand used to supply for free. An explainer is the counterweight, so the next decision the person makes is still theirs.

What this is not

  • Not documentation for the repo. The librarian (/capture) writes for the codebase's future readers; this writes for one person, now.
  • Not a summary. A summary compresses what happened. An explainer builds a model the reader did not have.
  • Not a textbook. It is grounded in this code, this change, this reader. A generic explanation that could have been written without opening the repo has failed.

Modes

Pick the mode from the request:

  • Concept: a pattern or idea new to this codebase ("how does the new job queue work"). Teach the idea, then show where it lives here and why it was chosen.
  • Diff / PR: a specific change ("explain what this PR does"). Walk the change by intent, not line by line: what problem, what moved, what to watch.
  • Idea: a proposal or direction ("explain the plan for auth"). Make the shape and the tradeoffs legible.
  • Recent work: a window of the developer's own recent sessions ("what did we build this week"). Reconstruct the thread so they own it again.

The explainer craft

  • Write for one reader. Name their level and what they know; teach from there, not from zero.
  • Concrete over abstract. Use the real names: this file, this function, this number. An example from the actual change beats a generic one.
  • Dense and visual. A diagram, a before and after, a small table earns its space. Prose walls do not.
  • Choose the visual form that matches the idea. Use a call tree for runtime flow, a component tree for UI structure, a state flow for lifecycle logic, a file map for ownership, a data-flow diagram for movement across boundaries, a diff sketch for before and after, or one small HTML visual only when static text cannot make the model clear.
  • One model per explainer. Teach the single load-bearing idea well; do not tour the whole system.
  • End where understanding is testable: the reader could now predict what breaks if this changed.

Read the full file on GitHub · 76 lines

Files

What ships with it

5 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. 3d ago First seen · 76 lines · 113 tokens per session scan A 4801e82c3aee

Subscribe to this mod's changes

resonance-ops-explain is a skill published in the GitHub repository manusco/resonance (37 stars, last pushed 3d ago), licensed MIT. It adds 113 tokens to every session and 1,585 once invoked, about $0.0006 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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