Downloading Batch Export Files
PostHog/posthog
Export PostHog events, persons, sessions, or the results of a HogQL query on demand and download the resulting files.
Investigate a Rezolus performance recording (.parquet, .rez, .dendro) through the rezolus MCP server.
Install Rezolus MCP
$ npx skills add iopsystems/rezolus --skill rezolus-mcp -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install iopsystems/rezolus rezolus-mcp --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/iopsystems/rezolus.git skills-src && mkdir -p .claude/skills && cp -r skills-src/src/mcp/skill .claude/skills/rezolus-mcp && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "rezolus-mcp" agent skill from https://github.com/iopsystems/rezolus/tree/main/src/mcp/skill into .claude/skills/rezolus-mcp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rezolus-mcp", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/iopsystems/rezolus/tree/main/src/mcp/skillType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add iopsystems/rezolus --skill rezolus-mcp -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install iopsystems/rezolus rezolus-mcp --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/iopsystems/rezolus.git skills-src && mkdir -p .agents/skills && cp -r skills-src/src/mcp/skill .agents/skills/rezolus-mcp && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "rezolus-mcp" agent skill from https://github.com/iopsystems/rezolus/tree/main/src/mcp/skill into .agents/skills/rezolus-mcp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rezolus-mcp", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add iopsystems/rezolus --skill rezolus-mcp -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install iopsystems/rezolus rezolus-mcp --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/iopsystems/rezolus.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/src/mcp/skill .cursor/skills/rezolus-mcp && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "rezolus-mcp" agent skill from https://github.com/iopsystems/rezolus/tree/main/src/mcp/skill into .cursor/skills/rezolus-mcp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rezolus-mcp", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/iopsystems/rezolus.git --path src/mcp/skill--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add iopsystems/rezolus --skill rezolus-mcp -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install iopsystems/rezolus rezolus-mcp --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/iopsystems/rezolus.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/src/mcp/skill .gemini/skills/rezolus-mcp && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "rezolus-mcp" agent skill from https://github.com/iopsystems/rezolus/tree/main/src/mcp/skill into .gemini/skills/rezolus-mcp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rezolus-mcp", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install iopsystems/rezolus rezolus-mcpInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add iopsystems/rezolus --skill rezolus-mcp -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/iopsystems/rezolus.git skills-src && mkdir -p .github/skills && cp -r skills-src/src/mcp/skill .github/skills/rezolus-mcp && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "rezolus-mcp" agent skill from https://github.com/iopsystems/rezolus/tree/main/src/mcp/skill into .github/skills/rezolus-mcp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rezolus-mcp", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add iopsystems/rezolus --skill rezolus-mcp -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install iopsystems/rezolus rezolus-mcp --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/iopsystems/rezolus.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/src/mcp/skill .opencode/skills/rezolus-mcp && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "rezolus-mcp" agent skill from https://github.com/iopsystems/rezolus/tree/main/src/mcp/skill into .opencode/skills/rezolus-mcp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rezolus-mcp", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
rezolus-mcp- GitHub stars
- 275
- Token cost
- ~1.2k tokens
- SKILL.md length
- 676 words
- Files
- 1
- Skills in repo
- 11
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Investigate a Rezolus performance recording (.parquet, .rez, .dendro) through the rezolus MCP server.
- Works in 5 steps: describe_recording first. It says what… → describe_metrics before any query.… → extract_features for the overview:… → …
- Tasks that involve DataFrames
- SKILL.md covers Workflow, Writing back and Reporting
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Rezolus MCP is an agent skill from iopsystems/rezolus. Investigate a Rezolus performance recording (.parquet, .rez, .dendro) through the rezolus MCP server. Discovery before query, verdicts and marks written back, links to the viewer.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Agent Workflows, covering DataFrames and MCP servers. It works with Model Context Protocol. The repository describes itself as: High-resolution, low-overhead systems and service telemetry.
When your agent uses it
- Tasks that involve DataFrames
- Tasks that involve MCP servers
Example prompts
- “/rezolus-mcp”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- describe_recording first. It says what the file holds: source,
- describe_metrics before any query. Metric names, types and labels
- extract_features for the overview: per-metric stats, noise class,
- query, detect_anomalies, analyze_correlation to test
- Write back what you found (below), and hand the person a link.
What it can do on your machine
Read from SKILL.md and the folder at commit 4b6863a. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Rezolus MCP loads about 1.2k tokens when it runs. Until then it costs about 48 tokens; SKILL.md has 676 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 676 words (~1,182 tokens).
“The rezolus MCP server opens a recording file and answers about it. Every tool that reads a recording takes parquet_file, the path to a .parquet, .rez or .dendro file (the name is historical; the format is detected by content). A…”
- name
- rezolus-mcp
Files
Just SKILL.md in src/mcp/skill of iopsystems/rezolus.
Open the folder on GitHubat commit 4b6863a
Compare with similar skills
Rezolus MCP next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Rezolus MCP this skilliopsystems/rezolus | 275 | — | ~1.2k | Automated safety check: Pass | Custom licence | |
| Downloading Batch Export FilesPostHog/posthog | 40k | — | ~2.4k | Automated safety check: Pass | Custom licence | |
| Skill Seekers Builderyusufkaraaslan/Skill_Seekers | 15k | — | ~760 | Automated safety check: Pass | MIT | |
| Verified Researchsweetcornna/free-search-mcp | 126 | — | ~1.8k | Automated safety check: Pass | MIT | |
| Geo MCP Serverssparkgeo/geo-mcp-servers | 119 | — | ~809 | Automated safety check: Pass | MIT | |
| MCP Google Map Projectcablate/mcp-google-map | 469 | — | ~774 | Automated safety check: Pass | MIT |
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More from iopsystems/rezolus
All 11 skills in this repoDocument Feature
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Write or update the CLI --help text and README section for a new or changed rezolus feature (a subcommand, flag, mode, or behavior change), then prove the help is usable by dispatching a fresh…
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A skill your agent uses when reviewing a Rezolus sampler change before merge — a new sampler, a change to an existing sampler's probes/refresh/metrics, or core changes that affect samplers; or…
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Render the running viewer in a real headless browser and assert on what it drew — element geometry, computed colours, wrap points, truncated labels, console errors.
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Tag and push a prerelease from the current Cargo.toml version.
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A skill your agent uses when starting or picking up a non-trivial effort (feature, investigation, perf probe, refactor, migration) in a shared repo where teammates or future agents must coordinate…
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Questions about Rezolus MCP
What does Rezolus MCP do?
Investigate a Rezolus performance recording (.parquet, .rez, .dendro) through the rezolus MCP server. Rezolus MCP is an agent skill from iopsystems/rezolus.dendro) through the rezolus MCP server.
When should I use Rezolus MCP?
Rezolus MCP fits situations like: tasks that involve DataFrames; tasks that involve MCP servers.
How do I install Rezolus MCP in Claude Code?
Run `npx skills add iopsystems/rezolus --skill rezolus-mcp -a claude-code`. Or copy the skill folder (src/mcp/skill in iopsystems/rezolus) into .claude/skills/rezolus-mcp in your project. Claude Code loads it when a task matches its description.
How do I install Rezolus MCP in Codex?
Run `npx skills add iopsystems/rezolus --skill rezolus-mcp -a codex`. Or copy the skill folder (src/mcp/skill in iopsystems/rezolus) into .agents/skills/rezolus-mcp in your project. Codex loads it when a task matches its description.
Can I use Rezolus MCP in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add iopsystems/rezolus --skill rezolus-mcp -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rezolus-mcp, .gemini/skills/rezolus-mcp, .github/skills/rezolus-mcp and .opencode/skills/rezolus-mcp in your project.
What does Rezolus MCP need to run?
SKILL.md names no scripts, command-line tools or credentials: Rezolus MCP is instructions for the agent only.
Does Rezolus MCP access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Rezolus MCP safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Rezolus MCP use?
Rezolus MCP has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Rezolus MCP use?
About 1.2k tokens (SKILL.md is roughly 4.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Rezolus MCP?
Skills that share tags, products or a category with Rezolus MCP: Downloading Batch Export Files (PostHog/posthog, 40k stars), Skill Seekers Builder (yusufkaraaslan/Skill_Seekers, 15k stars), Verified Research (sweetcornna/free-search-mcp, 126 stars) and Geo MCP Servers (sparkgeo/geo-mcp-servers, 119 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Rezolus MCP?
iopsystems (a GitHub organization) maintains it in iopsystems/rezolus, which has 275 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on October 8, 2026.
Source: iopsystems/rezolus on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.