skill-064

skill-064 is a skill for Claude Code, Codex from legendtkl/agentic-skill-router. It costs 70 tokens per session (3,139 once invoked), scanned A, original, MIT.

A guide to handling errors in ERPNext document controllers, which are Python components that validate and process ERPNext records.

In plain words
What is it for?
It helps implement exception handling, validation and permission errors, transaction rollbacks, error logging, and user feedback in ERPNext versions 14 through 16.
Why use it?
It helps prevent failed operations from leaving inconsistent data and gives users clearer error messages while recording useful details for developers.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps implement exception handling, validation and permission errors, transaction rollbacks, error logging, and user feedback in ERPNext versions 14 through 16.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/legendtkl/agentic-skill-router/skill-064
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 legendtkl/agentic-skill-router --skill skill-064
Clone the repo
git clone --depth 1 https://github.com/legendtkl/agentic-skill-router

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 skill-064

README.md
[![agentmods](https://agentmods.dev/badge/skills/legendtkl/agentic-skill-router/skill-064/github.svg)](https://agentmods.dev/skills/legendtkl/agentic-skill-router/skill-064)
Your own site
<a href="https://agentmods.dev/skills/legendtkl/agentic-skill-router/skill-064"><img src="https://agentmods.dev/badge/skills/legendtkl/agentic-skill-router/skill-064/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 skill-064

Your own site · 80×15
<a href="https://agentmods.dev/skills/legendtkl/agentic-skill-router/skill-064"><img src="https://agentmods.dev/badge/skills/legendtkl/agentic-skill-router/skill-064.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,139 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 $0.00070 $0.03139
Opus 5 $0.00035 $0.01570
Sonnet 5 $0.00014 $0.00628
Haiku 4.5 $0.00007 $0.00314

Measured 6d ago against content hash e42c44016941, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

skill-064 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 6d 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.

experiments/dci-compare/skillrouter-skills/skill-064/SKILL.md · 430 lines

How it starts

The opening of the file, as written. The whole thing — 430 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ERPNext Controllers - Error Handling

This skill covers error handling patterns for Document Controllers. For syntax, see erpnext-syntax-controllers. For implementation workflows, see erpnext-impl-controllers.

Version: v14/v15/v16 compatible


Controllers vs Server Scripts: Error Handling

┌─────────────────────────────────────────────────────────────────────┐
│ CONTROLLERS HAVE FULL PYTHON POWER                                  │
├─────────────────────────────────────────────────────────────────────┤
│                                                                     │
│ ✅ try/except blocks - Full exception handling                      │
│ ✅ raise statements - Custom exceptions                             │
│ ✅ Multiple except clauses - Handle specific errors                 │
│ ✅ finally blocks - Cleanup operations                              │
│ ✅ frappe.throw() - Stop with user message                          │
│ ✅ frappe.log_error() - Silent error logging                        │
│                                                                     │
│ ⚠️ Transaction behavior varies by hook:                            │
│    • validate: throw rolls back entire save                         │
│    • on_update: document already saved!                             │
│    • on_submit: partial rollback possible                           │
│                                                                     │
└─────────────────────────────────────────────────────────────────────┘

Main Decision: Error Handling by Hook

┌─────────────────────────────────────────────────────────────────────────┐
│ WHICH LIFECYCLE HOOK ARE YOU IN?                                        │
├─────────────────────────────────────────────────────────────────────────┤
│                                                                         │
│ ► validate / before_save                                                │
│   └─► frappe.throw() → Rolls back, document NOT saved                   │
│   └─► try/except → Catch and re-throw or handle gracefully              │
│                                                                         │
│ ► on_update / after_insert                                              │
│   └─► Document already saved! frappe.throw() shows error but saved      │
│   └─► Use try/except + log_error for non-critical operations            │
│   └─► Critical failures: frappe.throw() (shows error, doc is saved)     │
│                                                                         │
│ ► before_submit                                                         │
│   └─► frappe.throw() → Prevents submit, stays draft                     │
│   └─► Last chance for validation before docstatus=1                     │
│                                                                         │
│ ► on_submit                                                             │
│   └─► Document is submitted! throw shows error but docstatus=1          │
│   └─► Critical: throw causes partial state (submitted but failed)       │
│   └─► Better: validate everything in before_submit                      │
│                                                                         │
│ ► on_cancel                                                             │
│   └─► Reverse operations - use try/except for each reversal             │
│   └─► Log errors but try to continue cleanup                            │
│                                                                         │
└─────────────────────────────────────────────────────────────────────────┘

Read the full file on GitHub · 430 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. 6d ago First seen · 430 lines · 70 tokens per session scan A e42c44016941

Subscribe to this mod's changes

skill-064 is a skill published in the GitHub repository legendtkl/agentic-skill-router (5 stars, last pushed 3mo ago), licensed MIT. It adds 70 tokens to every session and 3,139 once invoked, about $0.0003 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 2026-09-03.

Related

Other skills, from other repositories

printing-press-amend

Amend a published CLI from one of two input sources: (1) dogfood mode mines the active Claude Code session transcript for friction (missing flags, hand- rolled API payloads, silent-null returns); (2) direct-input mode accepts user-supplied asks (rename a command, add commands or feeds, fix a named bug, optionally…

mvanhorn/cli-printing-press · 222 tokens

convex-performance-audit

Audits Convex performance for reads, subscriptions, write contention, and function limits. Use for slow features, insights findings, OCC conflicts, or read amplification.

openclaw/clawhub · 38 tokens

convex-insights

Query a running Convex app's logs + health in natural language (official MCP): failures, slow/expensive functions, deploy causality — scoped, evidence-backed, with a dashboard deep link.

openclaw/clawhub · 45 tokens

ssl-proxy-troubleshoot

Systematic workflow for troubleshooting SSL/proxy connectivity issues with government websites.

HKUDS/OpenSpace · 20 tokens

diagnose-backend-bug

Diagnose a bounded backend or multi-service failure from GitHub Issues, Jira, Aone, user-provided exports, logs, traces, responses, stack traces, or job records. Use when a service, API, RPC, worker, queue, CLI, or scheduled job bug needs correlation through the project's existing observability route before repair; do…

QoderAI/better-harness · 87 tokens

platform-apex-anonymous-run

Use this skill to run anonymous Apex against the connected Salesforce org — from a .apex file or a pasted snippet — capturing the debug log, surfacing compile and runtime errors, and summarizing results. Trigger on phrases like "run this anonymous apex", "execute this script against my org", "run this snippet of…

forcedotcom/sf-skills · 159 tokens