Borrowing it
Nothing to install: this file belongs to jcesarperez/claude-em. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/jcesarperez/claude-em/main/.claude/skills/check-epic/SKILL.mdgit clone --depth 1 https://github.com/jcesarperez/claude-emWrote 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.
[](https://agentmods.dev/skills/jcesarperez/claude-em/check-epic)<a href="https://agentmods.dev/skills/jcesarperez/claude-em/check-epic"><img src="https://agentmods.dev/badge/skills/jcesarperez/claude-em/check-epic/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.
<a href="https://agentmods.dev/skills/jcesarperez/claude-em/check-epic"><img src="https://agentmods.dev/badge/skills/jcesarperez/claude-em/check-epic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00041 | $0.02976 |
| Opus 5 | $0.00020 | $0.01488 |
| Sonnet 5 | $0.00008 | $0.00595 |
| Haiku 4.5 | $0.00004 | $0.00298 |
Grade A, and why
check-epic 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 11d 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 — 262 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tool
Run this script using the Bash tool:
bash .claude/skills/check-epic/scripts/fetch_epic.sh <EPIC_KEY> --json
EPIC_KEY: the Jira epic key (e.g.FBX-1234) — may be resolved from a phrase; see Epic Key Resolution below- If
EPIC_KEYis not an Epic, the script exits with an error. Report the error to the user and stop.
The script outputs JSON with this structure:
{
"fetched_at": "2026-04-14T10:00:00Z",
"epic": {
"key": "FBX-1234",
"summary": "...",
"status": "In Development",
"statusCategory": "In Progress",
"description": "plain text",
"duedate": "YYYY-MM-DD or null",
"created": "...",
"updated": "...",
"comments": [
{ "author": "Name", "created": "...", "body": "plain text" }
],
"time_in_current_status": { "formatted": "Xd Yh Zm", "seconds": 0, "since": "..." }
},
"metrics": {
"total": 0,
"done": 0,
"in_progress": 0,
"todo": 0,
"blocked": 0,
"pct_done": 0.0,
"assignees": ["Name"],
"assignee_count": 0,
"closed_last_7d": 0,
"created_last_7d": 0,
"stale_in_progress": [{ "key": "FBX-X", "summary": "...", "time_in_status": "Xd Yh Zm" }],
"unassigned_in_progress": ["FBX-X"],
"days_until_due": 0,
"epic_status_stale": false,
"median_cycle_time_days": 0.0,
"high_cycle_time_issues": [{ "key": "FBX-X", "summary": "...", "cycle_time_days": 0.0, "cycle_time_formatted": "Xd Yh Zm" }]
},
"child_issues": [
{
"key": "FBX-1235",
"issuetype": "Story",
"summary": "...",
"status": "In Progress",
"statusCategory": "In Progress",
"assignee": "Name or null",
"num_subtasks": 0,
"duedate": "YYYY-MM-DD or null",
"created": "...",
"updated": "...",
"time_in_current_status": { "formatted": "Xd Yh Zm", "seconds": 0, "since": "..." },
"cycle_time": { "in_progress_at": "...", "done_at": "...", "seconds": 0, "days": 0.0, "formatted": "Xd Yh Zm" }
}
]
}
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.
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.
- 11d ago First seen · 262 lines · 41 tokens per session scan A 95a7b7325502
check-epic is a skill published in the GitHub repository jcesarperez/claude-em (95 stars, last pushed 2mo ago), licensed MIT. It adds 41 tokens to every session and 2,976 once invoked, about $0.0002 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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