ctxd: Instructions file for Codex

AGENTS.md

ctxd AGENTS.md is an instructions file for Codex, OpenCode from thisis-gp/ctxd. It costs 239 tokens per session, scanned A, original, MIT.

Project instructions that record user preferences and workspace facts for an AI coding agent. They describe how the ctxd project provides curated Metabase database context to AI tools.

In plain words
What is it for?
Guiding work on ctxd, including Metabase setup, database-context refreshes, authentication, query permissions, and deployment details.
Why use it?
They give the agent consistent project knowledge, so it does not repeatedly ask the same questions or make decisions that conflict with the team's setup.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is thisis-gp/ctxd's own configuration. It tells Codex and OpenCode how to work on ctxd itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ctxd configures →

Reuse

Borrowing it

Nothing to install: this file belongs to thisis-gp/ctxd. 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/thisis-gp/ctxd/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/thisis-gp/ctxd

Made for: Codex, OpenCode.

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 ctxd AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/thisis-gp/ctxd/agents-md/github.svg)](https://agentmods.dev/instructions/thisis-gp/ctxd/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/thisis-gp/ctxd/agents-md"><img src="https://agentmods.dev/badge/instructions/thisis-gp/ctxd/agents-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.

agentmods 80×15 button for ctxd AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/thisis-gp/ctxd/agents-md"><img src="https://agentmods.dev/badge/instructions/thisis-gp/ctxd/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 239 This file is loaded in full into every session.
When invoked 239 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00239 $0.00239
Opus 5.5 $0.00096 $0.00096
Sonnet 5.5 $0.00048 $0.00048
Haiku 4.5 $0.00024 $0.00024

Measured 2mo ago against content hash de466a84c2ba, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ctxd AGENTS.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.

AGENTS.md · 15 lines

What it actually says

Learned User Preferences

  • Prefer simple plug-and-play org rollout: end users should not configure Metabase credentials; tech configures Metabase once on the server.
  • Default product mode is context-only: LLM builds/validates SQL via ctxd; users run queries in Metabase. Query execution is opt-in via CTXD_ALLOW_QUERY.
  • Hosted auth uses per-user connector tokens issued from an admin dashboard (not one shared org token).

Learned Workspace Facts

  • The project is being named ctxd (context daemon).
  • Ctxd reduces token use and schema-query hallucinations by serving curated, versioned Metabase context to AI agents through MCP.
  • The intended operational model is that a technical team ingests schema context while other users connect through MCP; SQL is drafted for Metabase rather than executed by default.
  • Preferred hosted ingest is ctxd refresh on a nightly cron on the same host/volume as the MCP server (GitHub Action artifacts alone do not update live Docker data).
  • HTTPS is terminated by Caddy in front of ctxd serve --http.
  • BRD.md is internal planning and is gitignored for the public repo.
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. 2mo ago First seen · 15 lines · 239 tokens per session scan A de466a84c2ba

Subscribe to this mod's changes

ctxd AGENTS.md is an instructions file published in the GitHub repository thisis-gp/ctxd (1 stars, last pushed 3mo ago), licensed MIT. It adds 239 tokens to every session, about $0.0010 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 2026-08-31.

Related

ctxd AGENTS.md compared with instructions from other repositories

ctxd AGENTS.md next to 6 instructions from other repositories
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deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode