mcp-data-server: Instructions file for Codex

AGENTS.md

mcp-data-server AGENTS.md is an instructions file for Codex, OpenCode from boettiger-lab/mcp-data-server. It costs 7,762 tokens per session, scanned A, original, BSD-3-Clause.

An agent guide for a data server whose Markdown files are loaded at startup as live instructions for its MCP tools. It also documents the development environment and deployment checks.

In plain words
What is it for?
Use it when changing the server’s agent guidance, testing MCP behavior, or validating deployments through the shared development environment.
Why use it?
It helps contributors understand that editing these files changes agent behavior, and prevents testing against the wrong environment.

Instructions file for CodexOpenCode

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

This is boettiger-lab/mcp-data-server's own configuration. It tells Codex and OpenCode how to work on mcp-data-server 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 mcp-data-server configures →

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is cd ../geo-agent-benchmark.

Reuse

Borrowing it

Nothing to install: this file belongs to boettiger-lab/mcp-data-server. 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/boettiger-lab/mcp-data-server/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/boettiger-lab/mcp-data-server

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 mcp-data-server AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/boettiger-lab/mcp-data-server/agents-md/github.svg)](https://agentmods.dev/instructions/boettiger-lab/mcp-data-server/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/boettiger-lab/mcp-data-server/agents-md"><img src="https://agentmods.dev/badge/instructions/boettiger-lab/mcp-data-server/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 mcp-data-server AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/boettiger-lab/mcp-data-server/agents-md"><img src="https://agentmods.dev/badge/instructions/boettiger-lab/mcp-data-server/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 7,762 This file is loaded in full into every session.
When invoked 7,762 The same file — it is already loaded in full.
Security scan A 1 finding. 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 $0.07762 $0.07762
Opus 5.5 $0.03105 $0.03105
Sonnet 5.5 $0.01552 $0.01552
Haiku 4.5 $0.00776 $0.00776

Measured 2mo ago against content hash 2bcb95409e8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-data-server AGENTS.md scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

anonymous pull token against the registry v2 API works anywhere `curl` does — substitute
AGENTS.md · 501 lines

How it starts

The opening of the file, as written. The whole thing — 501 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Architecture

The .md files in this repo are runtime prompt artifacts, not documentation. server.py loads them at startup and injects their content into MCP tool descriptions and prompts. Editing them changes what the agent is instructed to do. README.md is the only human-facing documentation.

Development & test environment — READ FIRST

Dev is the pre-prod canary: it tracks main and is never repointed by hand. dev-duckdb-mcp.nrp-nautilus.io runs the current :main build (pinned by digest, ≥2 replicas) precisely so merged changes are exercised on real infrastructure — including cross-pod skew — before prod. All MCP/guidance testing runs against dev, never a local process. Dev has one job; it is not a place to host a branch. Repointing dev to a branch stomps main and decays into the hand-pinning loop that keeps breaking it (#341/#366).

To test a change before it merges, do not repoint dev. Options:

  • Merge-then-validate (works today): merge to main → dev rolls onto that digest → run the headless matrix with MCP_URL=dev. This is the current gate.
  • Preview env (planned, #366): a preview label builds :pr-<n> for an ephemeral dev-pr-<n> — the build trigger and CI deploy land with the NRP deploy token.
  • Guidance PR gate (planned, #245): the matrix Job runs the PR's server.py as a sidecar (git-checkout of the branch — no image build) so the exact PR guidance is validated pre-merge.

Never run server.py (the MCP server) locally in this JupyterLab environment. It loads DuckDB plus the full STAC catalog in-process; running it here OOM'd the shared pod and took down the instance (2026-07-07). There is no "local MCP" testing path — if you catch yourself starting server.py, uvicorn, or a wrapper that imports the server on this machine, stop. The workflow is: land the change on dev (dev tracks :main — see Rollout below), then validate on dev with the headless matrix (see Validating guidance changes).

Read the full file on GitHub · 501 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.

  1. 2mo ago First seen · 501 lines · 7,762 tokens per session scan A 2bcb95409e8d

Subscribe to this mod's changes

mcp-data-server AGENTS.md is an instructions file published in the GitHub repository boettiger-lab/mcp-data-server (22 stars, last pushed 12d ago), licensed BSD-3-Clause. It adds 7,762 tokens to every session, about $0.0310 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

mcp-data-server AGENTS.md compared with instructions from other repositories

mcp-data-server AGENTS.md next to 6 instructions from other repositories
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mcp-data-server AGENTS.mdboettiger-lab/mcp-data-serverInstructions file2212d agoBSD-3-ClauseA7,762Codex, OpenCode
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next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
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vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode