explain

explain is a skill for Claude Code, Codex from samibs/skillfoundry. It costs 9 tokens per session (4,694 once invoked), scanned A, original, MIT.

A tool that reconstructs and explains the coding agent's most recent actions in plain language, with optional detail about files, decisions, diffs, agents, stories, or sessions.

In plain words
What is it for?
Use it to review the last action, inspect file changes, follow a story's history, or trace work by agent or session.
Why use it?
It makes agent activity traceable when a developer needs to understand what changed and why.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to review the last action, inspect file changes, follow a story's history, or trace work by agent or session.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/samibs/skillfoundry/explain
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 samibs/skillfoundry --skill explain
Clone the repo
git clone --depth 1 https://github.com/samibs/skillfoundry

Made for: Claude Code, Codex.

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 explain

README.md
[![agentmods](https://agentmods.dev/badge/skills/samibs/skillfoundry/explain/github.svg)](https://agentmods.dev/skills/samibs/skillfoundry/explain)
Your own site
<a href="https://agentmods.dev/skills/samibs/skillfoundry/explain"><img src="https://agentmods.dev/badge/skills/samibs/skillfoundry/explain/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 explain

Your own site · 80×15
<a href="https://agentmods.dev/skills/samibs/skillfoundry/explain"><img src="https://agentmods.dev/badge/skills/samibs/skillfoundry/explain.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 9 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,694 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 529
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
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 $0.00009 $0.04694
Opus 5.5 $0.00004 $0.01878
Sonnet 5.5 $0.00002 $0.00939
Haiku 4.5 $0.00001 $0.00469

Measured 1mo ago against content hash 77c35d0fe559, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

explain scanned grade A with 1 finding 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 1mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- smoke-test.sh uses curl with no auth (acceptable for health endpoint)
.agents/skills/explain/SKILL.md · 534 lines

How it starts

The opening of the file, as written. The whole thing — 534 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/explain - Execution Explainer

Reconstruct, trace, and explain the last agent action in plain English. Three levels of detail: quick, verbose, and story-level. No mystery, no ambiguity -- just cold facts about what happened and why.


Usage

/explain                       Explain the last agent action (quick mode)
/explain --verbose             Full trace with file changes and decision rationale
/explain --story STORY-XXX     All actions for a story in chronological order
/explain --agent <name>        Last action by a specific agent
/explain --session <id>        All actions from a specific session
/explain --diff                Include before/after file diffs in output

Instructions

You are the Execution Explainer -- the forensic analyst of agent activity. When a developer asks "what just happened?", you reconstruct the full trace from scattered logs, dispatch state, and git history. You never speculate. If the data is incomplete, you say so.

Core Principle: Every agent action leaves traces. Find them, connect them, explain them.


PHASE 1: CONTEXT GATHERING

Where to Look

Agent activity leaves traces in multiple locations. Search all of them, in this order:

Source Path Contains
Swarm task queue .claude/swarm/task-queue.jsonl Completed and pending swarm tasks with agent assignments
Dispatch state .claude/dispatch-state.json Wave dispatch records: which agents ran, in what order, outcomes
Remediation logs logs/remediations.md Auto-fix actions taken by fixer or debugger
Escalation logs logs/escalations.md Points where agents escalated to the user or another agent
Git log git log --oneline -20 Recent commits with agent attribution in commit messages
Scratchpad .claude/scratchpad.md Agent notes, intermediate decisions, handoff context
Agent stats memory_bank/knowledge/agent-stats.jsonl Event log with durations, outcomes, error types
Memory bank memory_bank/knowledge/decisions-universal.jsonl Decisions recorded during execution
Error log memory_bank/knowledge/errors-universal.jsonl Errors encountered and how they were handled

Read the full file on GitHub · 534 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. 1mo ago First seen · 534 lines · 9 tokens per session scan A 77c35d0fe559

Subscribe to this mod's changes

explain is a skill published in the GitHub repository samibs/skillfoundry (12 stars, last pushed 14d ago), licensed MIT. It adds 9 tokens to every session and 4,694 once invoked, about $0.0000 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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