feed-handler-canary-deployment SKILL.md skillA
feed-handler-canary-deployment 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/feed-handler-canary-deployment@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/feed-handler-canary-deployment/SKILL.md- Versions recorded
- 5
- Latest version
- v2.0.0, committed Sep 3, 2026
- First version recorded
- Jul 25, 2026
- Size
- 10,985 bytes
- Repository stars
- 50
- License
- Apache-2.0
Use when releasing a new market data parser and first live exposure should cover a slice of symbols only. Both decoders run in parallel, prices are audited tick by tick against the incumbent, and divergence triggers auto-rollback.
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
Invoke this skill when upgrading a market data feed handler — a new ITCH/MDP/FIX parser
version, a rewritten WebSocket client, a changed normalisation or scaling step — and you
want the first live exposure to that code to cover a slice of the universe rather than
all of it. Both the incumbent ($V_{\text{stable}}$) and the candidate ($V_{\text{canary}}$)
decode the same stream in parallel; the router decides, per symbol, **whose decoded output
is published downstream**, audits the two decoders tick by tick, and trips a breaker that
reverts every symbol to $V_{\text{stable}}$ when they diverge.
The failure this guards against is your own decoder: a wrong implied-decimal scale, a
mis-sized struct field, a message type silently ignored, a book that drifts after a
replace message.
## When NOT to Use
- **As a way to receive less data.** Exchange direct feeds are not subscribable per
symbol. Nasdaq TotalView-ITCH is "a series of sequenced messages" over SoupBinTCP or
MoldUDP64 covering all instruments; a canary handler still consumes and parses 100% of
the stream. A symbol-level canary bounds *blast radius*, never bandwidth, CPU, or
…Read the whole file at its exact version.
How to install
mdr add himanshuj16/algo-trading-skills/feed-handler-canary-deployment@sha256:cbf9fe3e7cdeef50The 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_rgbbaw6grjduxkqd)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 25, 2026 and Sep 3, 2026, about one every 10 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.0.0 latest | 2026-09-03 | 8527a51 | 10,985 B | A | view · diff |
| v2.0.0 | 2026-08-25 | 7e72405 | 10,964 B | A | view · diff |
| v1.0.0 | 2026-08-07 | 89d1436 | 3,189 B | A | view · diff |
| v1.0 | 2026-07-30 | dfc60c7 | 3,187 B | A | view · diff |
| v1.0 | 2026-07-25 | 03fa811 | 3,199 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 (10985 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_rgbbaw6grjduxkqd GET https://markdownregistry.com/api/v1/resolve?ref=himanshuj16/algo-trading-skills/feed-handler-canary-deployment GET https://markdownregistry.com/api/v1/blob/cbf9fe3e7cdeef5058a1e87b4c48846cce02e50c0fe3b79f08d73ef9fc09a7dc
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.