What is meteor CLAUDE.md?

Project instructions describing Meteor, a tool that collects metadata from data stores and services, transforms it, and sends it to catalog systems.

Useful when working on Meteor extractors, processors, sinks, records, ownership links, data lineage, or Compass integration.

They give a coding agent the project’s architecture, data model, directories, and integration details so it can make informed changes.

How raystack/meteor configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to raystack/meteor. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/raystack/meteor/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/raystack/meteor

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/raystack/meteor/claude-md/github.svg)](https://agentmods.dev/instructions/raystack/meteor/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/raystack/meteor/claude-md"><img src="https://agentmods.dev/badge/instructions/raystack/meteor/claude-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/raystack/meteor/claude-md"><img src="https://agentmods.dev/badge/instructions/raystack/meteor/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 600 This file is loaded in full into every session.

When invoked 600 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00600	$0.00600
Opus 5.5	$0.00240	$0.00240
Sonnet 5.5	$0.00120	$0.00120
Haiku 4.5	$0.00060	$0.00060

Measured 2mo ago against content hash 512268f68742, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

meteor CLAUDE.md 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 2mo 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.

CLAUDE.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Meteor

Meteor is a plugin-driven metadata collection agent. It extracts metadata from data stores/services via extractors, transforms it via processors, and pushes it to catalog services via sinks.

Architecture

Recipe (YAML) → Extractor → Processor(s) → Sink(s)

Each extractor emits Records. A Record contains:

Entity: urn, type, name, description, source, properties (flat structpb.Struct)
Edges: list of relationships, each with source_urn, target_urn, type, source, properties

Ownership is represented as edges with type owned_by. Lineage is represented as edges with type derived_from (entity depends on target) and generates (entity produces target).

Extractors: 35 plugins (bigquery, postgres, kafka, github, etc.)
Processors: Transform/enrich records in-flight
Sinks: Push to destinations (compass, kafka, file, http, etc.)
Runner: Orchestrates the pipeline with batching, retries, concurrency

Key Directories

models/          Core data model (Record wrapping Entity + Edges)
plugins/
  extractors/    Source plugins (one dir per source)
  processors/    Transform plugins
  sinks/         Destination plugins (compass, kafka, file, etc.)
runner/          Pipeline orchestration (batching, retries, concurrency)
recipe/          Recipe parsing and validation
cmd/             CLI commands (run, lint, list, info, gen)
docs/            Documentation site (Chronicle; content in docs/content/docs/)

Data Model

Entity (meteorv1beta1.Entity):

urn - Unique resource name
type - Entity type (table, dashboard, topic, job, user, repository, team, bucket, application, model, etc.)
name - Human-readable name
description - Description
source - Source system (e.g. bigquery, postgres, kafka)
properties - Flat key-value map (structpb.Struct) holding all type-specific metadata

Edge (meteorv1beta1.Edge):

source_urn - URN of the source entity
target_urn - URN of the target entity
type - Relationship type (owned_by, derived_from, generates, references, member_of, etc.)
source - Source system
properties - Additional metadata

Read the full file on GitHub · 64 lines

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.

2mo ago First seen · 64 lines · 600 tokens per session scan A 512268f68742

Subscribe to this mod's changes

meteor CLAUDE.md is an instructions file published in the GitHub repository raystack/meteor (242 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 600 tokens to every session, about $0.0024 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 2026-08-30.

Data and AI Databases active-metadata ai-agents context-engine context-engineering context-graph

meteor CLAUDE.md next to 6 instructions from other repositories
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meteor: Instructions file for Claude Code