Fix At The Boundary
BuilderIO/agent-native
How to find every sibling instance of a reported bug before fixing it.
Define boundary conditions - fixed supports, displacements, symmetry.
MITAuto-check passed
Install Abaqus Bc
$ npx skills add Cai-aa/CAE-Agent-Hub --skill abaqus-bc -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Cai-aa/CAE-Agent-Hub abaqus-bc --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Cai-aa/CAE-Agent-Hub.git skills-src && mkdir -p .claude/skills && cp -r skills-src/Skill/abaqus/setup/abaqus-bc .claude/skills/abaqus-bc && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "abaqus-bc" agent skill from https://github.com/Cai-aa/CAE-Agent-Hub/tree/main/Skill/abaqus/setup/abaqus-bc into .claude/skills/abaqus-bc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "abaqus-bc", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Cai-aa/CAE-Agent-Hub/tree/main/Skill/abaqus/setup/abaqus-bcType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Cai-aa/CAE-Agent-Hub --skill abaqus-bc -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Cai-aa/CAE-Agent-Hub abaqus-bc --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Cai-aa/CAE-Agent-Hub.git skills-src && mkdir -p .agents/skills && cp -r skills-src/Skill/abaqus/setup/abaqus-bc .agents/skills/abaqus-bc && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "abaqus-bc" agent skill from https://github.com/Cai-aa/CAE-Agent-Hub/tree/main/Skill/abaqus/setup/abaqus-bc into .agents/skills/abaqus-bc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "abaqus-bc", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Cai-aa/CAE-Agent-Hub --skill abaqus-bc -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Cai-aa/CAE-Agent-Hub abaqus-bc --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Cai-aa/CAE-Agent-Hub.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/Skill/abaqus/setup/abaqus-bc .cursor/skills/abaqus-bc && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "abaqus-bc" agent skill from https://github.com/Cai-aa/CAE-Agent-Hub/tree/main/Skill/abaqus/setup/abaqus-bc into .cursor/skills/abaqus-bc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "abaqus-bc", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Cai-aa/CAE-Agent-Hub.git --path Skill/abaqus/setup/abaqus-bc--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Cai-aa/CAE-Agent-Hub --skill abaqus-bc -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Cai-aa/CAE-Agent-Hub abaqus-bc --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Cai-aa/CAE-Agent-Hub.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/Skill/abaqus/setup/abaqus-bc .gemini/skills/abaqus-bc && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "abaqus-bc" agent skill from https://github.com/Cai-aa/CAE-Agent-Hub/tree/main/Skill/abaqus/setup/abaqus-bc into .gemini/skills/abaqus-bc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "abaqus-bc", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Cai-aa/CAE-Agent-Hub abaqus-bcInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Cai-aa/CAE-Agent-Hub --skill abaqus-bc -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Cai-aa/CAE-Agent-Hub.git skills-src && mkdir -p .github/skills && cp -r skills-src/Skill/abaqus/setup/abaqus-bc .github/skills/abaqus-bc && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "abaqus-bc" agent skill from https://github.com/Cai-aa/CAE-Agent-Hub/tree/main/Skill/abaqus/setup/abaqus-bc into .github/skills/abaqus-bc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "abaqus-bc", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Cai-aa/CAE-Agent-Hub --skill abaqus-bc -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Cai-aa/CAE-Agent-Hub abaqus-bc --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Cai-aa/CAE-Agent-Hub.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/Skill/abaqus/setup/abaqus-bc .opencode/skills/abaqus-bc && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "abaqus-bc" agent skill from https://github.com/Cai-aa/CAE-Agent-Hub/tree/main/Skill/abaqus/setup/abaqus-bc into .opencode/skills/abaqus-bc/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "abaqus-bc", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
abaqus-bc- GitHub stars
- 1k
- Token cost
- ~1.2k tokens
- SKILL.md length
- 526 words
- Files
- 4
- Skills in repo
- 57
- Repo updated
- First seen
- Licence
- MIT
At a glance
Define boundary conditions - fixed supports, displacements, symmetry.
- Works in 4 steps: What Type of Support? → Which Step to Apply? → Rigid Body Motion Check → …
- User mentions fixed
- SKILL.md covers When to Use This Skill, Key Decisions, What to Ask User and Validation Checklist, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Abaqus Bc is an agent skill from Cai-aa/CAE-Agent-Hub. Define boundary conditions - fixed supports, displacements, symmetry. Use when user mentions fixed, pinned, clamped, supported, or constrained. Does NOT handle loads or forces.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `UPSTREAM.md` and `metadata.json`).
The licence is MIT.
When your agent uses it
- User mentions fixed
Example prompts
- “/abaqus-bc”
Requirements
- Pre-approved tools (allowed-tools): Read, Write, Edit, Glob, Grep, Bash(abaqus:*)
Workflow steps
4 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 194ef49. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadWriteEditGlobGrepBash(abaqus:*)
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Abaqus Bc loads about 1.2k tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 526 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from Cai-aa/CAE-Agent-Hub at commit 194ef49, republished under its MIT licence (© Cai-aa). 526 words, ~1,178 tokens.
Download SKILL.mdSave it as
.claude/skills/abaqus-bc/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- abaqus-bc
- description
- Define boundary conditions - fixed supports, displacements, symmetry. Use when user mentions fixed, pinned, clamped, supported, or constrained. Does NOT handle loads or forces.
- allowed-tools
- Read, Write, Edit, Glob, Grep, Bash(abaqus:*)
Abaqus Boundary Conditions Skill
This skill defines boundary conditions (BCs) in Abaqus models. BCs constrain motion and prevent rigid body movement.
When to Use This Skill
Route here when user mentions:
- "fixed", "encastre", "clamped", "welded"
- "pinned", "hinged", "simply supported"
- "roller", "sliding support"
- "symmetry", "half model", "quarter model"
- "constrain", "prevent movement"
- "prescribed displacement", "move by X mm"
- "rigid body motion error"
Route elsewhere:
- Forces, pressures, gravity →
/abaqus-load - Contact between parts →
/abaqus-interaction - Initial temperature/stress →
/abaqus-field
Key Decisions
Step 1: What Type of Support?
| User Describes | BC Type | DOFs Constrained | Physical Meaning |
|---|---|---|---|
| "Fixed", "clamped", "welded" | Encastre | All 6 | Fully rigid connection |
| "Pinned", "hinged" | DisplacementBC | U1, U2, U3 only | Rotation allowed |
| "Roller", "sliding" | DisplacementBC | 1 translation | Free in-plane motion |
| "Half model", "symmetric" | XsymmBC/YsymmBC/ZsymmBC | Normal + 2 rotations | Symmetry plane |
| "Move it 5mm" | DisplacementBC | Specified value | Prescribed motion |
Default choice: Encastre for fixed supports (most common).
Step 2: Which Step to Apply?
| BC Purpose | Apply In | Reason |
|---|---|---|
| Fixed support | Initial | Active before loads |
| Prescribed displacement | Load step | Applied with loading |
| Released BC | Later step | Use FREED to release |
Default: Apply supports in 'Initial' step.
Step 3: Rigid Body Motion Check
For 3D static analysis, constrain at least 6 DOFs total:
- 3 translations (X, Y, Z)
- 3 rotations (about X, Y, Z axes)
| Configuration | Stability |
|---|---|
| One face Encastre | Fully constrained |
| Three pinned points (non-collinear) | Fully constrained |
| One vertex + symmetry planes | May be sufficient |
"Zero pivot" error = insufficient constraints.
Step 4: Symmetry Plane Selection
| Symmetry BC | Apply When | Constrains |
|---|---|---|
| XsymmBC | Symmetric about YZ plane (X=const) | U1, UR2, UR3 |
| YsymmBC | Symmetric about XZ plane (Y=const) | U2, UR1, UR3 |
| ZsymmBC | Symmetric about XY plane (Z=const) | U3, UR1, UR2 |
Apply symmetry BC to the face AT the symmetry plane.
Show full SKILL.md (248 more words)Show less
What to Ask User
If unclear, ask:
Where is it supported?
- "Which face/edge is fixed?"
- "Where does it mount to the frame?"
What type of support?
- "Fully fixed (welded) or can it rotate (pinned)?"
- "Free to slide in any direction?"
Is the model symmetric?
- "Can we use half symmetry to reduce model size?"
- "Is the loading also symmetric?"
Any prescribed motion?
- "Does anything move by a known amount?"
- "Is this a displacement-controlled test?"
Validation Checklist
Before running analysis:
- At least one region has fixed support
- All 6 rigid body modes constrained
- BCs applied in correct step
- Symmetry planes match actual symmetry (geometry AND loads)
- No conflicting BCs on same DOF
After analysis:
- Reaction forces at supports balance applied loads
- No "zero pivot" or "rigid body motion" warnings
- Displacements at fixed regions are zero
Common Mistakes
| Mistake | Symptom | Fix |
|---|---|---|
| Missing BC | Zero pivot error | Add Encastre to a face |
| Over-constraint | Warning in .dat file | Remove redundant BC |
| BC on wrong region | Model flies away | Verify findAt coordinates |
| Symmetry without symmetric load | Wrong results | Ensure loads are also symmetric |
| Pinned beam (no rotation) | Unrealistic stress | Use Encastre or add rotational stiffness |
Troubleshooting
| Error | Cause | Solution |
|---|---|---|
| "Zero pivot" | Insufficient constraints | Add more BCs |
| "Negative eigenvalue" | Unstable / buckling | Check supports, may need stabilization |
| "Face not found" | Wrong findAt coordinates | Use bounding box method |
| "Over-constraint" | Conflicting BCs | Remove duplicate BC on same DOF |
Code Patterns
For API syntax and code examples, see:
© Cai-aa, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 3 other files in Skill/abaqus/setup/abaqus-bc of Cai-aa/CAE-Agent-Hub.
- SKILL.md
- UPSTREAM.md
- UPSTREAM_LICENSE
- metadata.json
Open the folder on GitHubat commit 194ef49
Compare with similar skills
Abaqus Bc next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Abaqus Bc this skillCai-aa/CAE-Agent-Hub | 1k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Fix At The BoundaryBuilderIO/agent-native | 7.1k | — | ~1.2k | Automated safety check: Pass | None | |
| Fixalirezarezvani/claude-skills | 28k | 1 repos | ~765 | Automated safety check: Pass | MIT | |
| Fix Issuepytorch/pytorch | 104k | — | ~2.3k | Automated safety check: Pass | Custom licence | |
| Orch Fix Defectaffaan-m/ECC | 276k | 1 repos | ~414 | Automated safety check: Pass | MIT | |
| Logic Fix Allsickn33/agentic-awesome-skills | 47k | 1 repos | ~1.3k | Automated safety check: Pass | MIT |
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Orch Fix Defect
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Questions about Abaqus Bc
What does Abaqus Bc do?
Define boundary conditions - fixed supports, displacements, symmetry. Abaqus Bc is an agent skill from Cai-aa/CAE-Agent-Hub. Define boundary conditions - fixed supports, displacements, symmetry.
When should I use Abaqus Bc?
Abaqus Bc fits situations like: user mentions fixed.
How do I install Abaqus Bc in Claude Code?
Run `npx skills add Cai-aa/CAE-Agent-Hub --skill abaqus-bc -a claude-code`. Or copy the skill folder (Skill/abaqus/setup/abaqus-bc in Cai-aa/CAE-Agent-Hub) into .claude/skills/abaqus-bc in your project. Claude Code loads it when a task matches its description.
How do I install Abaqus Bc in Codex?
Run `npx skills add Cai-aa/CAE-Agent-Hub --skill abaqus-bc -a codex`. Or copy the skill folder (Skill/abaqus/setup/abaqus-bc in Cai-aa/CAE-Agent-Hub) into .agents/skills/abaqus-bc in your project. Codex loads it when a task matches its description.
Can I use Abaqus Bc in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Cai-aa/CAE-Agent-Hub --skill abaqus-bc -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/abaqus-bc, .gemini/skills/abaqus-bc, .github/skills/abaqus-bc and .opencode/skills/abaqus-bc in your project.
What does Abaqus Bc need to run?
SKILL.md names no scripts, command-line tools or credentials: Abaqus Bc is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Edit, Glob, Grep, Bash(abaqus:*).
Does Abaqus Bc access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Abaqus Bc safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Abaqus Bc use?
Abaqus Bc is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Abaqus Bc use?
About 1.2k tokens (SKILL.md is roughly 4.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Abaqus Bc?
Skills that share tags, products or a category with Abaqus Bc: Fix At The Boundary (BuilderIO/agent-native, 7.1k stars), Fix (alirezarezvani/claude-skills, 28k stars), Fix Issue (pytorch/pytorch, 104k stars) and Orch Fix Defect (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Abaqus Bc?
Cai-aa (a GitHub user) maintains it in Cai-aa/CAE-Agent-Hub, which has 1,003 GitHub stars. The repository holds 57 skills in this directory. The repository was last updated on September 30, 2026.
Source: Cai-aa/CAE-Agent-Hub on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.