docs-errors

A command that opens ArchiPy guidance for handling application errors. It covers custom error types, preserving the original cause, and translating outside-system failures at adapter boundaries.

In plain words
What is it for?
Designing error classes, handling database or driver errors, and configuring FastAPI status-code responses.
Why use it?
It helps keep failures understandable and map them consistently to HTTP responses in FastAPI applications.

Command

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 commands/syntaxarc/archipy-plugin/docs-errors
Clone the repo
git clone --depth 1 https://github.com/SyntaxArc/archipy-plugin
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 121 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 $0.00011 $0.00121
Opus 5 $0.00005 $0.00060
Sonnet 5 $0.00002 $0.00024
Haiku 4.5 $0.00001 $0.00012

Measured yesterday against content hash bf71a3b36c66, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

docs-errors 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 yesterday.

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.

commands/docs-errors.md · 20 lines

What it actually says

/docs-errors

Use the archipy-docs skill and the Errors section of skills/archipy-docs/reference.md.

Cover:

  • Subclassing ArchiPy BaseError hierarchy
  • raise ... from e and never bare Exception for domain failures
  • Mapping driver errors at adapter boundaries
  • FastAPI status mapping when using AppUtils exception handlers

Live docs:

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. yesterday First seen · 20 lines · 11 tokens per session scan A bf71a3b36c66

Subscribe to this mod's changes

docs-errors is a command published in the GitHub repository SyntaxArc/archipy-plugin (2 stars, last pushed 8d ago), licensed MIT. It adds 11 tokens to every session and 121 once invoked, about $0.0001 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 2026-08-31.