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 NexFlow-SMF/nexflow-smf-public --skill smf-healthcheckgit clone --depth 1 https://github.com/NexFlow-SMF/nexflow-smf-publicWrote 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/nexflow-smf/nexflow-smf-public/smf-healthcheck)<a href="https://agentmods.dev/skills/nexflow-smf/nexflow-smf-public/smf-healthcheck"><img src="https://agentmods.dev/badge/skills/nexflow-smf/nexflow-smf-public/smf-healthcheck/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/nexflow-smf/nexflow-smf-public/smf-healthcheck"><img src="https://agentmods.dev/badge/skills/nexflow-smf/nexflow-smf-public/smf-healthcheck.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 | $0.00035 | $0.00380 |
| Opus 5 | $0.00017 | $0.00190 |
| Sonnet 5 | $0.00007 | $0.00076 |
| Haiku 4.5 | $0.00003 | $0.00038 |
Grade A, and why
nexflow-smf-healthcheck-v1 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.
What it actually says
When to use this skill
Use this skill when:
- You need to confirm NexFlow SMF is reachable before committing to a paid call.
- You are building health dashboards or uptime checks.
- You are debugging connectivity or deciding whether to retry after a failure.
Do not use for probing arbitrary x402 endpoints; use a generic x402 healthcheck capability for that.
HTTP API
- Method: GET
- URL:
https://api.nexflow.xyz/api/smf/v1/healthcheck - Auth: none required for basic health.
Response shape
On success (2xx):
{
"status": "ok",
"service": "nexflow-smf",
"version": "v1",
"latency_ms": 42,
"timestamp": "2026-02-17T16:20:00Z"
}
If the service is degraded, status may be "degraded" with optional message or details. Treat non-2xx or missing status: ok as unavailable.
Pricing
This endpoint is free. No x402 payment is required for basic health.
Test usage
- Add header:
X-Nexflow-Test: 1if the test environment requires it. - Use for smoke tests and CI to ensure the SMF base URL is reachable.
Usage examples for agents
- "Check if NexFlow SMF is up before calling route-matrix."
- "Measure SMF latency for a status page."
- "Verify connectivity to api.nexflow.xyz SMF before retrying a failed payment."
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 · 53 lines · 35 tokens per session scan A 22b232417a81
nexflow-smf-healthcheck-v1 is a skill published in the GitHub repository NexFlow-SMF/nexflow-smf-public (0 stars, last pushed 5mo ago), licensed MIT. It adds 35 tokens to every session and 380 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 2026-08-31.
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