clock-synchronization-ptp-for-trading-hosts SKILL.md skillA
clock-synchronization-ptp-for-trading-hosts from himanshuj16/algo-trading-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add himanshuj16/algo-trading-skills/clock-synchronization-ptp-for-trading-hosts@v2.0.0Pins v2.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- himanshuj16/algo-trading-skills
- Path
skills/clock-synchronization-ptp-for-trading-hosts/SKILL.md- Versions recorded
- 5
- Latest version
- v2.0.0, committed Sep 3, 2026
- First version recorded
- Jul 26, 2026
- Size
- 10,637 bytes
- Repository stars
- 50
- License
- Apache-2.0
Use when standing up or auditing the time-sync stack itself on a Linux trading host: NIC hardware timestamping, ptp4l against the grandmaster profile and phc2sys to the system clock, with linuxptp telemetry parsed as reported.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
## When to Use Use this skill when standing up or auditing the **time-synchronization stack itself** on a Linux trading host: NIC hardware timestamping, `ptp4l` (grandmaster → PTP Hardware Clock), `phc2sys` (PHC → `CLOCK_REALTIME`), and the telemetry that evidences all three are working. PTP (IEEE 1588) exists here because software NTP over UDP carries millisecond-scale OS scheduler jitter and cannot evidence a microsecond-scale bound. Hardware timestamping on a PTP-capable NIC takes the timestamp at the wire, outside the kernel network stack. `PtpClockSyncManager` in `scripts/` parses `ptp4l`/`phc2sys` output and returns a fail-closed sync verdict. It is a **telemetry reader**, not a controller. ## When NOT to Use - **As the enforcement point.** This module reports; it does not halt trading. Threshold escalation, holdover grace and the latched kill-switch belong to `clock-drift-monitoring-alerting-thresholds`. Do not build a second, divergent set of thresholds here. - **As proof that timestamps are correct.** A perfectly synchronized clock on the wrong timescale reads as green — see the TAI/UTC pitfall below. Offset telemetry measures …
Read the whole file at its exact version.
How to install
mdr add himanshuj16/algo-trading-skills/clock-synchronization-ptp-for-trading-hosts@sha256:0d720cbbd89aec20The line at the top of this page pins the label v2.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_houuyu57rwufmt6t)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 26, 2026 and Sep 3, 2026, about one every 10 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.0.0 latest | 2026-09-03 | 8527a51 | 10,637 B | A | view · diff |
| v2.0.0 | 2026-08-22 | 3ed130d | 10,802 B | A | view · diff |
| v1.0.0 | 2026-08-07 | 89d1436 | 3,041 B | A | view · diff |
| v1.0.0 | 2026-07-30 | dfc60c7 | 3,039 B | A | view · diff |
| v1.0.0 | 2026-07-26 | 0100af1 | 3,053 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (10637 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
himanshuj16/algo-trading-skills · 50 stars · license Apache-2.0 · pushed 2026-09-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_houuyu57rwufmt6t GET https://markdownregistry.com/api/v1/resolve?ref=himanshuj16/algo-trading-skills/clock-synchronization-ptp-for-trading-hosts GET https://markdownregistry.com/api/v1/blob/0d720cbbd89aec202fc1efa1fe7994d07a8dc0b6422cf9b92d7f2e61f2e53dfa
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.