event-description-generator

event-description-generator is a skill for Claude Code from amplitude/mcp-marketplace. It costs 77 tokens per session (1,852 once invoked), scanned A, original, MIT.

A dispatcher for auditing event descriptions across a project. It splits the work into chunks, sends each chunk to worker agents, and combines their results into a CSV.

In plain words
What is it for?
Use it to find events with missing descriptions over a chosen project and cursor range. You must provide a project ID or project name.
Why use it?
It removes the need to manage large event lists and parallel workers by hand. It also keeps each audit run's files grouped and records where processing should continue.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents.

Part of the amplitude-experimental plugin — 1 skill, 2 agents, 1 MCP server shipped together

Good fit Use it to find events with missing descriptions over a chosen project and cursor range. You must provide a project ID or project name.

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Install with agentmods
npx agentmods add skills/amplitude/mcp-marketplace/event-description-generator
Install

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.

Any agent
npx skills add amplitude/mcp-marketplace --skill event-description-generator
Clone the repo
git clone --depth 1 https://github.com/amplitude/mcp-marketplace

Made for: Claude Code.

Or install amplitude-experimental, the plugin that ships this one along with the rest of its 1 skill, 2 agents, 1 MCP server.

Wrote 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.

agentmods badge for event-description-generator

README.md
[![agentmods](https://agentmods.dev/badge/skills/amplitude/mcp-marketplace/event-description-generator/github.svg)](https://agentmods.dev/skills/amplitude/mcp-marketplace/event-description-generator)
Your own site
<a href="https://agentmods.dev/skills/amplitude/mcp-marketplace/event-description-generator"><img src="https://agentmods.dev/badge/skills/amplitude/mcp-marketplace/event-description-generator/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.

agentmods 80×15 button for event-description-generator

Your own site · 80×15
<a href="https://agentmods.dev/skills/amplitude/mcp-marketplace/event-description-generator"><img src="https://agentmods.dev/badge/skills/amplitude/mcp-marketplace/event-description-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,852 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00077 $0.01852
Opus 5 $0.00039 $0.00926
Sonnet 5 $0.00015 $0.00370
Haiku 4.5 $0.00008 $0.00185

Measured 12d ago against content hash 4931b0415802, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

event-description-generator 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 12d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/compress-run.py, scripts/writer-plan.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

plugins/amplitude-experimental/skills/event-description-generator/SKILL.md · 249 lines

How it starts

The opening of the file, as written. The whole thing — 249 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Event Description Generator

Run this skill as an orchestrator only. Do not perform per-event filtering, repo search, or description-writing logic in this skill body. Delegate chunk processing to the event-descriptions-worker subagent.

Workflow

  1. Resolve project input (projectId or project name)
  2. Create a run ID with short git SHA (<projectId>-<sha>)
  3. Create run directories under runs/
  4. Determine cursor plan (cursorStart, maxEvents, chunk size)
  5. Spawn event-descriptions-worker subagents for cursor chunks
  6. Collect worker summaries + output paths
  7. Compress the run into a single CSV
  8. Report concise progress and next cursor

Execution Rules

  • Keep this skill as a dispatcher; the worker does the heavy lifting.
  • Do not call set_event_metadata from this skill.
  • Do not manually re-implement worker filtering/search logic here.
  • Preserve user control over scope (project, cursor range, chunk size, parallelism).

Prerequisites

The user must provide either:

  • projectId, or
  • project name to resolve.

If neither is provided, stop and ask.

Phase 1: Resolve Project

1.1 If projectId is provided

Use it directly.

1.2 If project name is provided

Call get_context and resolve the name to a single projectId.

  • If exactly one clear match exists, continue with that ID.
  • If multiple matches exist, ask the user to choose.
  • Do not choose an ambiguous match on behalf of the user.

1.3 If project name is not provided

Prompt the user to input the project name or ID and halt.

Phase 2: Build Cursor Plan

Default values unless the user specifies otherwise:

  • cursorStart: 0
  • maxEvents: 400
  • eventsPerWorker: 50
  • maxParallelWorkers: 4

For maxEvents:

  • Compute total chunks as ceil(maxEvents / eventsPerWorker).
  • Process at most maxEvents events starting at cursorStart.
  • For the final chunk, pass a reduced eventsPerWorker if needed to avoid exceeding maxEvents.

For each chunk:

Read the full file on GitHub · 249 lines

Files

What ships with it

3 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.

Changes

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.

  1. 12d ago First seen · 249 lines · 77 tokens per session scan A 4931b0415802

Subscribe to this mod's changes

event-description-generator is a skill published in the GitHub repository amplitude/mcp-marketplace (35 stars, last pushed 3d ago), licensed MIT. It adds 77 tokens to every session and 1,852 once invoked, about $0.0004 per session on Opus 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 2026-08-30.

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