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andykear/FileMaker-XMLsnippet-Layout-Claude-Skill
Reverse-engineered specification of FileMaker's undocumented layout XML format (fmxmlsnippet LayoutObjectList). All 18 object types covered, flags decoded, element order confirmed, verified against production layouts. Packaged as a Claude skill that generates pasteable layout XML.
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1skill in this repository
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Individual skills in this repository
How it works
filemaker-layout-xml
When your agent uses it
Use this skill whenever the user wants to work with FileMaker layout XML. This includes generating paste-ready layout object XML (fmxmlsnippet type LayoutObjectList) from descriptions, reviewing layout XML for silent paste-handler failures, or analysing Save as XML layout exports. Trigger any time the user mentions FileMaker layouts, layout objects, fields, portals, tab controls, popovers, button bars, web viewers, anchoring or autosizing, or LayoutObjectList. Always perform the theme pre-flight before generating, and set object anchoring deliberately whenever an object must resize with the window. Do not attempt FileMaker layout XML from memory alone.
What it loads into context
Frontmatter
137 tokensAlways available to the agent
SKILL.md
1,388 tokensWhen the skill is activated
Reference documents
35,686 tokensLoaded on request
Token counts are estimates. Scripts run separately; they are not counted as reference context.
The playbook
- Pre-flight: theme identification (mandatory)
- ExtendedAttributes on every TextObj
- ButtonBar segment labels go in LabelCalc, not Data
- Anchoring must be set deliberately
- Keep a snippet under about 150 KB
- Web viewers
- Named theme styles apply by name
- Write integer CSS lengths without a decimal point
- Scope
Files
LICENSEasset18,657 bytesREADME.mddoc10,915 bytesSKILL.mdcore6,107 bytesreferences/filemaker_layout_xml_rules.mddoc131,730 bytes
Read SKILL.md
# FileMaker Layout XML Skill
Created by Andrew Kear of Clockwork Creative Technology and shared openly with the FileMaker/Claris community under CC BY 4.0. Attribution required on any reuse, adaptation or redistribution, including any derived or excerpted work.
Deterministic generation and analysis of `fmxmlsnippet type="LayoutObjectList"`, FileMaker's Layout mode clipboard format. Full specification in `references/filemaker_layout_xml_rules.md`.
Most rules below concern silent failures: the XML pastes without error and is wrong on screen or in behaviour, and no structural audit catches it.
## Pre-flight: theme identification (mandatory)
Every object must carry the target layout's `<ThemeName>` verbatim. The wrong identifier causes text doubling and CSS class names rendering as visible text, or fails silently: FM substitutes the destination theme and rebuilds the object from `FullCSS`, discarding `LocalCSS` and leaving `CustomStyles` unbound (§25.3).
1. If the user supplied a clipboard export, extract it: `grep -m1 "ThemeName" file.xml`. A **Save as XML export has no `<ThemeName>`** — read the target layout's `<LayoutThemeReference name="...">` instead, matching the `<Layout>` element by name, since an export holds every layout in the file (§0).
2. If not, ask before generating. The user gets it by copying any object from the target layout and pasting into a text editor.Skills included
- filemaker-layout-xml
Repository facts
- License
- CC-BY-4.0
- Created
- Jun 6, 2026
- Last pushed
- Oct 3, 2026
- Forks
- 0
- Open issues
- 0
- Project activity
- Active
Before you install
Instructions onlyAutomated signals, not a guarantee
Checked Nov 6, 2026
- No broad tool permissions
- No dangerous shell commands
- 16 network referencesin 2 files: README.md:3 references/filemaker_layout_xml_rules.md:1207
- No hidden or obfuscated text
- No instruction overrides
- No executable scripts
- No access to secrets
- No requests to vote in Hot
Show all 16 signals by file
README.md
- Network accessline 3
[](https://github.com/andykear/FileMaker-XMLsnippet-Layout-Claude-Skill) - Network accessline 4
 - Network accessline 5
[](https://creativecommons.org/licenses/by/4.0/) - Network accessline 119
**[Menu](https://github.com/andykear)** - Network accessline 123
**[FileMaker Second Opinion](https://github.com/andykear/FileMaker-second-opinion)**\ - Network accessline 124
**[FileMaker AI Vocabulary](https://github.com/andykear/FileMaker-AI-vocabulary)** - Network accessline 128
**[FileMaker XML bit-flags](https://github.com/andykear/FileMaker-XML-bit-flags)** (SaXML)\ - Network accessline 129
**[FileMaker AI Grammar](https://github.com/andykear/FileMaker-AI-grammar)** - Network accessline 133
**[Script XML Skill](https://github.com/andykear/FileMaker-XMLsnippet-Claude-Skill)** (XMSS, XMSC, XMFN)\ - Network accessline 134
**[Layout XML Skill](https://github.com/andykear/FileMaker-XMLsnippet-Layout-Claude-Skill)** (XML2)\ - Network accessline 135
**[Field, Table & Value List Definitions](https://github.com/andykear/FileMaker-XML-field-definitions)** (XMFD, XMTB, XMVL) - Network accessline 139
**[Clockwork Inspector](https://github.com/andykear/FileMaker-XML-inspector-open-source)** (SaXML)\ - Network accessline 140
**[XML Scrubber](https://github.com/andykear/FileMaker-XML-scrubber)** (SaXML + others)
references/filemaker_layout_xml_rules.md
- Network accessline 1207
<ThemeName>com.filemaker.theme.apex_blue</ThemeName> </Styles> <Calculation index="0"><![CDATA["https://example.com"]]></Calculation> - Network accessline 1208
</Styles> <Calculation index="0"><![CDATA["https://example.com"]]></Calculation> </ExternalObj> - Network accessline 1209
<Calculation index="0"><![CDATA["https://example.com"]]></Calculation>
How the signals fit together
Facts from a static read of the files at the pinned commit. They describe what the code does, not why.
Signal confidence: 16 facts
- Network access in prose of documentationREADME.md:3Low confidence
- Network access in prose of documentationREADME.md:4Low confidence
- Network access in prose of documentationREADME.md:5Low confidence
- Network access in prose of documentationREADME.md:119Low confidence
- Network access in prose of documentationREADME.md:123Low confidence
- Network access in prose of documentationREADME.md:124Low confidence
- Network access in prose of documentationREADME.md:128Low confidence
- Network access in prose of documentationREADME.md:129Low confidence
- Network access in prose of documentationREADME.md:133Low confidence
- Network access in prose of documentationREADME.md:134Low confidence
- Network access in prose of documentationREADME.md:135Low confidence
- Network access in prose of documentationREADME.md:139Low confidence
- Network access in prose of documentationREADME.md:140Low confidence
- Network access in code of documentationreferences/filemaker_layout_xml_rules.md:1207Low confidence
- Network access in code of documentationreferences/filemaker_layout_xml_rules.md:1208Low confidence
- Network access in code of documentationreferences/filemaker_layout_xml_rules.md:1209Low confidence
Works with
| Agent | Status | Evidence | Install to |
|---|---|---|---|
| Claude Code | Compatible | Standard SKILL.md SKILL.md | .claude/skills/<skill-name>/ |
| Codex | Compatible | Standard SKILL.md SKILL.md | .agents/skills/<skill-name>/ |
| Cursor | Compatible | Standard SKILL.md SKILL.md | .cursor/skills/<skill-name>/ |
| Gemini CLI | Compatible | Standard SKILL.md SKILL.md | .gemini/skills/<skill-name>/ |
| GitHub Copilot | Compatible | Standard SKILL.md SKILL.md | .github/skills/<skill-name>/ |
| OpenCode | Compatible | Standard SKILL.md SKILL.md | .opencode/skills/<skill-name>/ |
- Native The repository ships a manifest, folder or frontmatter field for this agent.
- Compatible A standard SKILL.md that this agent can read.
- Unknown No evidence either way.
Derived automatically from paths, manifests and frontmatter. Not tested on each agent.
