What is arcgis-maps-sdk-js-ai-context AGENTS.md?

A catalogue of skills for ArcGIS Maps SDK for JavaScript, a toolkit for adding interactive maps and geographic data to web applications.

Use it when building JavaScript map or 3D applications, loading geographic data, configuring map components, tuning performance, or selecting an SDK skill.

It helps an agent choose focused guidance for maps, layers, data, performance, visualization, and project setup instead of guessing from the whole SDK.

How SaschaBrunnerCH/arcgis-maps-sdk-js-ai-context configures Codex and

Reuse

Borrowing it

Nothing to install: this file belongs to SaschaBrunnerCH/arcgis-maps-sdk-js-ai-context. 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/SaschaBrunnerCH/arcgis-maps-sdk-js-ai-context/master/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/SaschaBrunnerCH/arcgis-maps-sdk-js-ai-context

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/saschabrunnerch/arcgis-maps-sdk-js-ai-context/agents-md/github.svg)](https://agentmods.dev/instructions/saschabrunnerch/arcgis-maps-sdk-js-ai-context/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/saschabrunnerch/arcgis-maps-sdk-js-ai-context/agents-md"><img src="https://agentmods.dev/badge/instructions/saschabrunnerch/arcgis-maps-sdk-js-ai-context/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/saschabrunnerch/arcgis-maps-sdk-js-ai-context/agents-md"><img src="https://agentmods.dev/badge/instructions/saschabrunnerch/arcgis-maps-sdk-js-ai-context/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,049 This file is loaded in full into every session.

When invoked 2,049 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	$0.02049	$0.02049
Opus 5.5	$0.00820	$0.00820
Sonnet 5.5	$0.00410	$0.00410
Haiku 4.5	$0.00205	$0.00205

Measured 2mo ago against content hash 362a81506997, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

arcgis-maps-sdk-js-ai-context 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 · 179 lines

How it starts

The opening of the file, as written. The whole thing — 179 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ArcGIS Maps SDK for JavaScript -- Skill Catalog

This file indexes all skills for the ArcGIS Maps SDK for JavaScript (SDK 5.0). Use this to find the right skill for a task, combine skills for complex workflows, and make quick architectural decisions.

Skills (35)

ES modules only. Uses @arcgis/map-components, @arcgis/core, Calcite Design System, and Vite tooling. Includes 4 new component packages: AI Components, Charts, Coding Components, and Embeddable Maps.

Core

Skill	Purpose
`arcgis-core-maps`	Map/SceneView initialization, navigation, basemaps, Map Components vs Core API
`arcgis-starter-app`	Project scaffolding with Vite + TypeScript, production tooling, framework integration
`arcgis-core-utilities`	reactiveUtils, promiseUtils, esriRequest, Collection, Accessor
`arcgis-performance`	Bundle optimization, lazy loading, memory management, view performance tuning

Layers & Data

Skill	Purpose
`arcgis-layers`	FeatureLayer, GeoJSONLayer, CSVLayer, GraphicsLayer, TileLayer, queries
`arcgis-advanced-layers`	WMS, WFS, KML, MapImageLayer, CatalogLayer, OGC layers
`arcgis-3d-layers`	SceneLayer, IntegratedMeshLayer, PointCloudLayer, 3D-specific layer config
`arcgis-tables-forms`	FeatureTable, FeatureForm, related records, tabular data workflows

Visualization

Skill	Purpose
`arcgis-visualization`	Renderers, symbols, visual variables, labels
`arcgis-cim-symbols`	CIM symbol specification for advanced multi-layer symbology
`arcgis-smart-mapping`	Data-driven renderer/color/size generators, statistics, suggested scales
`arcgis-feature-effects`	Layer effects (bloom, blur, drop-shadow), blend modes, feature filters

Read the full file on GitHub · 179 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 · 179 lines · 2,049 tokens per session scan A 362a81506997

Subscribe to this mod's changes

arcgis-maps-sdk-js-ai-context AGENTS.md is an instructions file published in the GitHub repository SaschaBrunnerCH/arcgis-maps-sdk-js-ai-context (23 stars, last pushed 7mo ago), licensed MIT. It adds 2,049 tokens to every session, about $0.0082 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.

Frontend

arcgis-maps-sdk-js-ai-context AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
arcgis-maps-sdk-js-ai-context AGENTS.mdSaschaBrunnerCH/arcgis-maps-sdk-js-ai-context	Instructions file	23	7mo ago	MIT	A	2,049	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

arcgis-maps-sdk-js-ai-context: Instructions file for Codex