Skip to content
appsgit

Rerun Mcap

Rerun Mcap is an agent skill (a SKILL.md file) from rerun-io/rerun. Ingest MCAP files into Rerun chunk streams with rerun.chunk.McapReader. It works with Claude Code and has 11,642 GitHub stars across a repository of 5 listed skills. Install it by copying the skill folder into your agent's skills directory.

github.com/rerun-io/rerun/skills/rerun-mcap (opens in a new tab)

Data as of from the GitHub API; description from the skill's SKILL.md. Report an error

View on GitHub (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/rerun-io/rerun.git
cp -r rerun/skills/rerun-mcap ~/.claude/skills/rerun-mcap   # personal, or .claude/skills in a project

In the Claude apps, zip the rerun-mcap folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/rerun-io/rerun.git
cp -r rerun/skills/rerun-mcap .agents/skills/rerun-mcap   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/rerun-io/rerun.git
cp -r rerun/skills/rerun-mcap .cursor/skills/rerun-mcap   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Ingest MCAP files into Rerun chunk streams with rerun.chunk.McapReader. Read when converting an MCAP recording, selecting topics or decoders, decoding custom protobuf messages, or when an MCAP-derived stream comes out empty. Builds on rerun-chunk-processing (stream mechanics) and rerun-data-model (what the topics should become). McapReader turns an MCAP file into a lazy chunk stream: one entity per topic at the topic's path, message payloads decoded by pluggable decoders.

More skills in rerun-io/rerun

5 skills are listed from this repository.

Similar skills

More data & analysis skills

All Data & analysis

FAQ

Rerun Mcap FAQ

Still curious? Email info@appsgit.com.

How do I install the Rerun Mcap skill?

Copy the rerun-mcap folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the Rerun Mcap skill free?

Yes. The repository is open source under the Apache-2.0 license.

Is Rerun Mcap maintained?

The repository's most recent commit was on Oct 26, 2026. Its latest release is 0.40.0. appsgit only lists skills from repositories with a commit in the last six months.