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 gaelic-ghost/socket --skill coremedia-timing-samplebuffer-workflowgit clone --depth 1 https://github.com/gaelic-ghost/socketWrote 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/gaelic-ghost/socket/coremedia-timing-samplebuffer-workflow)<a href="https://agentmods.dev/skills/gaelic-ghost/socket/coremedia-timing-samplebuffer-workflow"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/coremedia-timing-samplebuffer-workflow/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/gaelic-ghost/socket/coremedia-timing-samplebuffer-workflow"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/coremedia-timing-samplebuffer-workflow.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 | $0.00090 | $0.01442 |
| Opus 5.5 | $0.00036 | $0.00577 |
| Sonnet 5.5 | $0.00018 | $0.00288 |
| Haiku 4.5 | $0.00009 | $0.00144 |
Grade A, and why
coremedia-timing-samplebuffer-workflow 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 1mo 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 — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Core Media Timing Sample Buffer Workflow
Purpose
Guide Core Media timing and sample-buffer repair. This skill owns the precise media-time and sample payload boundary: CMTime, time ranges, clocks, timebases, format descriptions, sample buffers, attachments, readiness, presentation and decode timestamps, synchronization, and diagnostic probes.
It is not the AVFoundation pipeline owner, not the AVAudioEngine graph owner, and not a generic media-player workflow.
When To Use
- Use this skill when code manipulates
CMTime,CMTimeRange,CMClock,CMTimebase,CMFormatDescription,CMSampleBuffer, attachments, sample readiness, timestamps, dropped buffers,AVSampleBufferDisplayLayer, orAVSampleBufferRenderSynchronizer. - Use this skill when existing media code drifts, drops frames or buffers, appends invalid samples, loses format descriptions, confuses decode and presentation time, mishandles host time, or cannot explain synchronization failures.
- Recommend
avfoundation-media-pipeline-workflowwhen the primary problem is capture, playback, reader, writer, export, or asset loading. - Recommend
avaudio-engine-workflowwhen the primary problem is engine graph rendering rather than sample-buffer timing.
Single-Path Workflow
- Classify the timing request:
- time math
- sample-buffer creation or inspection
- format description
- attachments or dropped buffers
- display layer or render synchronizer
- writer or reader timestamp repair
- audio/video synchronization
- Apply the Apple docs gate:
- read current Core Media or AVFoundation sample-buffer documentation first
- state the documented timing or sample-buffer behavior relied on
- apply
../../shared/references/apple-media-type-ownership.mdbefore converting Core Media values to raw numbers, dictionaries, or app-specific sample wrappers
- Inspect timing invariants:
- validity, timescale, epoch, and numeric value
- presentation timestamp, decode timestamp, and duration
- time range start and end
- format description presence and media type
- readiness and dropped-buffer flags
- host clock or audio clock relationship
- Repair common failure modes:
- invalid
CMTimetreated as zero - mismatched timescales or lossy conversion hidden in helpers
- missing or wrong
CMFormatDescription CMSampleBuffer,CMFormatDescription, attachments, readiness, or dropped-buffer metadata hidden behind opaque dictionaries before diagnostics- presentation and decode timestamps swapped or flattened
- sample-buffer append without readiness or writer back-pressure
- video synchronized to host time when audio-clock sync is required
- invalid
- Return one recommendation with:
- timing class
- documented Apple behavior relied on
- invariant checks
- repair findings
- diagnostic probes
- validation and handoff expectation
What ships with it
4 files 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.
- 1mo ago First seen · 118 lines · 90 tokens per session scan A 7182db0f4b45
coremedia-timing-samplebuffer-workflow is a skill published in the GitHub repository gaelic-ghost/socket (7 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 90 tokens to every session and 1,442 once invoked, about $0.0004 per session on Opus 5.5. 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.
Other skills, from other repositories
kotlin-dev
Use when implementing any feature or bugfix in a Kotlin/Spring Boot service, covers layer conventions, idioms, testing, and observability.
kotlin-reviewer
Use when reviewing a Kotlin/Spring Boot pull request, systematic checklist covering architecture, idioms, testing, security, and observability.
swiftui-macos
Expert SwiftUI guidance for macOS apps — covers writing and reviewing code with runtime-level understanding of observation, concurrency, performance, and platform integration. Use when user asks to "build a SwiftUI view", "review my SwiftUI code", "fix observation issues", "bridge AppKit", "architect state…
craft
Use when a product idea is still vague and needs to become a clear definition of what to build — "let's craft an app like X", "help me define what I actually want", "clarify this idea before we plan it". Also use before planning or implementation when requirements, UX, domain behaviour, or technical preferences have…
pipeline
Use when the user asks to take a substantial feature from an initial idea through implementation in one mostly autonomous run.
turbo-pipeline
Use when the user wants a feature built end to end after answering one round of questions and then being left alone — "turbo", "ask me once, then just build it", "I'll answer up front, don't come back to me", "decide the rest yourself". Not for a run that wants a spec approval and no tests (superb:fast-pipeline), one…