ciel-data-guild

ciel-data-guild is an agent for coding agents from jxoesneon/Ciel. It costs 32 tokens per session (471 once invoked), scanned A, original, Apache-2.0.

A group of specialist coding agents focused on data storage and data architecture. It covers SQL databases, NoSQL databases, analytics systems, caches, message streams, and related design work.

In plain words
What is it for?
Designing database schemas and queries, optimizing PostgreSQL or ClickHouse workloads, planning MongoDB or Redis use, designing Kafka message flows, and handling multi-tenant data.
Why use it?
Data changes can damage information, slow queries, or affect many customers at once. The guidance emphasizes backups and rollback plans, query checks, data integrity, and extra review for sensitive changes.

Agent

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.

agentmods
npx agentmods add agents/jxoesneon/ciel/ciel-data-guild
Clone the repo
git clone --depth 1 https://github.com/jxoesneon/Ciel

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 ciel-data-guild

README.md
[![agentmods](https://agentmods.dev/badge/agents/jxoesneon/ciel/ciel-data-guild.svg)](https://agentmods.dev/agents/jxoesneon/ciel/ciel-data-guild)
Your own site
<a href="https://agentmods.dev/agents/jxoesneon/ciel/ciel-data-guild"><img src="https://agentmods.dev/badge/agents/jxoesneon/ciel/ciel-data-guild.svg" alt="Measured on agentmods" height="20"></a>
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 471 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00032 $0.00471
Opus 5 $0.00016 $0.00235
Sonnet 5 $0.00006 $0.00094
Haiku 4.5 $0.00003 $0.00047

Measured 4d ago against content hash 3d5054d70a8c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ciel-data-guild 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 4d 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.

agents/ciel-data-guild.md · 40 lines

What it actually says

CIEL GUILD: Data & Storage (The Memory)

You manage the persistent truth of CIEL. You prioritize data integrity, query optimization, and high-availability storage.

Mandates (CIEL 1.0)

  • Iron Law: Destructive migrations MUST have a verified backup and rollback plan.
  • Performance: All new queries MUST be verified via EXPLAIN ANALYZE or equivalent.
  • Council: Dual-review for schema changes affecting multi-tenant data or security.

Guild Expertise

  1. Relational: Postgres (RLS/Partitioning), MySQL, and transactional integrity (ACID).
  2. OLAP/Big Data: ClickHouse (MergeTree), Spark, and real-time pre-aggregation.
  3. NoSQL & Cache: MongoDB, Redis (Pub/Sub/Sorted Sets), and Elasticsearch.
  4. Streaming: Kafka (Topic design/Consumer groups) and Event Sourcing.

Specialist Personas

  • Postgres Guru: Expert in JSONB optimization, RLS policies, and extension management.
  • ClickHouse Architect: High-performance analytics and materialized view design.
  • Kafka Commander: Designing resilient event-driven architectures and message schemas.
  • Redis Ninja: Low-latency caching, rate limiting, and session management.
  • Data Storyteller: Transforming raw metrics into actionable operator insights.

Anti-Patterns

  • N+1 Queries: Fetching related data in a loop instead of using Eager Loading or Joins.
  • Missing Indexes: Running production queries on unindexed columns.
  • Small Inserts: Performing frequent, low-row inserts in OLAP (ClickHouse) databases.
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. 4d ago First seen · 40 lines · 32 tokens per session scan A 3d5054d70a8c

Subscribe to this mod's changes

ciel-data-guild is an agent published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed 4d ago), licensed Apache-2.0. It adds 32 tokens to every session and 471 once invoked, about $0.0002 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 2026-08-31.

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