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.
npx skills add hoangsonww/Claude-Code-Agent-Monitor --skill endpoint-probegit clone --depth 1 https://github.com/hoangsonww/Claude-Code-Agent-MonitorWrote 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/hoangsonww/claude-code-agent-monitor/endpoint-probe)<a href="https://agentmods.dev/skills/hoangsonww/claude-code-agent-monitor/endpoint-probe"><img src="https://agentmods.dev/badge/skills/hoangsonww/claude-code-agent-monitor/endpoint-probe/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/hoangsonww/claude-code-agent-monitor/endpoint-probe"><img src="https://agentmods.dev/badge/skills/hoangsonww/claude-code-agent-monitor/endpoint-probe.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00080 | $0.00746 |
| Opus 5 | $0.00040 | $0.00373 |
| Sonnet 5 | $0.00016 | $0.00149 |
| Haiku 4.5 | $0.00008 | $0.00075 |
Grade A, and why
endpoint-probe 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 12d 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 — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Endpoint Probe
Smoke-test the dashboard's main API surface by hitting each major route once and reporting whether it responds and what shape it returns.
Input
The user provides: $ARGUMENTS
Options: empty (default: probe all routes below), or a substring to filter which
routes are probed (e.g. pricing probes only matching routes).
Data Sources
| Endpoint | Returns |
|---|---|
GET /api/stats |
{ total_sessions, active_sessions, active_agents, total_agents, total_events, events_today, ws_connections, agents_by_status, sessions_by_status } |
GET /api/analytics |
{ overview, tokens, tool_usage, daily_events, daily_sessions, agent_types, event_types, avg_events_per_session, total_subagents, sessions_by_status, agents_by_status } |
GET /api/sessions |
Session list; each: id, status, model, cwd, started_at, ended_at, cost, metadata |
GET /api/pricing/cost |
{ total_cost, breakdown:[{ model, input_tokens, output_tokens, cache_read_tokens, cache_write_tokens, cost, matched_rule }] } |
GET /api/workflows/runs |
Workflow-tool run journals (fleets) |
GET /api/cc-config/overview |
Claude Code config explorer overview (skills, agents, commands, plugins, mcp, hooks, etc.) |
Method
For each route, issue a single GET against http://localhost:4820<path> with a
short timeout, capturing the HTTP status code, round-trip latency, and the
top-level shape of the JSON body (object keys, or array length). A route counts
as reachable when it returns a 2xx with parseable JSON.
If /api/stats itself fails to connect, the dashboard is not running — stop and
tell the user to start it with npm start (or npm run dev) from the repo root.
Report Sections
1. Probe Matrix
A Markdown table — one row per route — with columns:
endpoint, status (HTTP code), latency, reachable (✅/❌), shape
(e.g. object: {total_cost, breakdown[…]} or array[N]).
2. Reachability Summary
Count of reachable vs total. Name any unreachable or non-2xx routes explicitly.
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.
- 12d ago First seen · 64 lines · 80 tokens per session scan A 1f34b14dfded
endpoint-probe is a skill published in the GitHub repository hoangsonww/Claude-Code-Agent-Monitor (991 stars, last pushed 3d ago), licensed MIT. It adds 80 tokens to every session and 746 once invoked, about $0.0004 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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