A command that lists recent API errors from the Claude Code Agent Monitor, including when they happened, which session saw them, and the returned summary.

Use it to list a chosen number of recent APIError events and identify the session affected most often.

It lets you inspect recent failures quickly without searching the full event history.

errors — Command for Claude Code by hoangsonww

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.

Clone the repo

git clone --depth 1 https://github.com/hoangsonww/Claude-Code-Agent-Monitor

Made for: Claude Code.

Or install ccam-quality, the plugin that ships this one along with the rest of its 5 skills, 3 commands, 1 agent.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/hoangsonww/claude-code-agent-monitor/errors.svg)](https://agentmods.dev/commands/hoangsonww/claude-code-agent-monitor/errors)

Your own site

<a href="https://agentmods.dev/commands/hoangsonww/claude-code-agent-monitor/errors"><img src="https://agentmods.dev/badge/commands/hoangsonww/claude-code-agent-monitor/errors.svg" alt="Measured on agentmods" height="20"></a>

Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 323 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00013	$0.00323
Opus 5	$0.00006	$0.00161
Sonnet 5	$0.00003	$0.00065
Haiku 4.5	$0.00001	$0.00032

Measured 3d ago against content hash 81e8f080cff3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

errors 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 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.

Makes network callslowCapability

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

curl -s http://localhost:4820/api/events?limit=300

plugins/ccam-quality/commands/errors.md · 29 lines

What it actually says

List the most recent Claude Code errors from the Agent Monitor dashboard at http://localhost:4820. $ARGUMENTS is the number of errors to show (default 10).

Pull recent events and keep only API errors:
```
curl -s http://localhost:4820/api/events?limit=300
```
Filter the array to event_type == "APIError". (If $ARGUMENTS is a number, show that many; otherwise show 10.) If none are found, also check curl -s http://localhost:4820/api/analytics event_types.APIError to confirm the true total and say "no recent APIError events (N total all-time)".
For each error, newest first, print one line: timestamp · session_id · summary — using the timestamp, session_id, and summary fields exactly as returned (trim long summaries to ~100 chars).
End with a one-line tally: total APIErrors shown and the most-affected session_id.

Output rules: cite only fields the API returned — never fabricate an error or a cause. Keep it to the list plus the tally; no extra prose. If curl cannot reach http://localhost:4820, tell the user to start the dashboard with npm start from the repo root.

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.

3d ago First seen · 29 lines · 13 tokens per session scan A 81e8f080cff3

Subscribe to this mod's changes

errors is a command published in the GitHub repository hoangsonww/Claude-Code-Agent-Monitor (975 stars, last pushed today), licensed MIT. It adds 13 tokens to every session and 323 once invoked, about $0.0001 per session on Opus 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 2026-09-03.

Analytics and metrics Claude Code Debugging claude-agents claude-skills express expressjs node

errors

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Makes network callslowCapability

What it actually says

What this file has done since we first saw it

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