asciinema-cast-format SKILL.md skillA
asciinema-cast-format from terrylica/cc-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add terrylica/cc-skills/asciinema-cast-format@git:20260401.b664eafPins git:20260401.b664eaf in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- terrylica/cc-skills
- Path
plugins/asciinema-tools/skills/asciinema-cast-format/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260401.b664eaf, committed Apr 1, 2026
- First version recorded
- Jan 31, 2026
- Size
- 7,850 bytes
- Repository stars
- 2
- License
- MIT
Asciinema v3 .cast file format reference. TRIGGERS - cast format, asciicast spec, event codes, parse cast file.
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
# asciinema-cast-format Reference documentation for the asciinema v3 .cast file format (asciicast v2 specification). > **Platform**: All platforms (documentation only) > **Self-Evolving Skill**: This skill improves through use. If instructions are wrong, parameters drifted, or a workaround was needed — fix this file immediately, don't defer. Only update for real, reproducible issues. ## When to Use This Skill Use this skill when: - Parsing or inspecting .cast file structure - Understanding NDJSON header and event formats - Building tools that read or write .cast files - Debugging recording issues or format errors - Learning the asciicast v2 specification --- ## Format Overview Asciinema v3 uses NDJSON (Newline Delimited JSON) format: - Line 1: Header object with recording metadata - Lines 2+: Event arrays with timestamp, type, and data --- ## Header Specification The first line is a JSON object with these fields: | Field | Type | Required | Description | | ----------- | ------ | -------- | ------------------------------------------- | | `version` | int | Yes | Format version (always 2 for v3 recordings) | …
Read the whole file at its exact version.
How to install
mdr add terrylica/cc-skills/asciinema-cast-format@sha256:0dee628c6dadf1c9The line at the top of this page pins the label git:20260401.b664eaf, 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_5lc2yzrjlbxpotza)
7 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jan 31, 2026 and Apr 1, 2026, about one every 15 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260401.b664eaf latest | 2026-04-01 | b664eaf | 7,850 B | A | view · diff |
| git:20260401.6be22af | 2026-04-01 | 6be22af | 7,628 B | A | view · diff |
| git:20260131.1a586f8 | 2026-01-31 | 1a586f8 | 7,058 B | A | view · diff |
| git:20260131.fb0e0bb | 2026-01-31 | fb0e0bb | 6,779 B | A | view · diff |
| git:20260131.ed2f3f2 | 2026-01-31 | ed2f3f2 | 5,633 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 (7850 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
terrylica/cc-skills · 2 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5lc2yzrjlbxpotza GET https://markdownregistry.com/api/v1/resolve?ref=terrylica/cc-skills/asciinema-cast-format GET https://markdownregistry.com/api/v1/blob/0dee628c6dadf1c964e5437ef87647f9c933afd5bdb158a3a94184d0e13a8518
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.