Wagmi Feature Development
wevm/wagmi
Walks through adding a Wagmi feature across its layers: a Viem-based core action, TanStack Query options, and React and Vue bindings.
Trace a WIP1006 INVALIDPARENT cascade to its first ancestor with a different status or invalidation reason.
Install Invalid Parent
$ npx skills add worldcoin/world-chain --skill invalid-parent -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install worldcoin/world-chain invalid-parent --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/worldcoin/world-chain.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/invalid-parent .claude/skills/invalid-parent && 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 "invalid-parent" agent skill from https://github.com/worldcoin/world-chain/tree/main/.agents/skills/invalid-parent into .claude/skills/invalid-parent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "invalid-parent", 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/worldcoin/world-chain/tree/main/.agents/skills/invalid-parentType 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 worldcoin/world-chain --skill invalid-parent -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install worldcoin/world-chain invalid-parent --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/worldcoin/world-chain.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/invalid-parent .agents/skills/invalid-parent && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "invalid-parent" agent skill from https://github.com/worldcoin/world-chain/tree/main/.agents/skills/invalid-parent into .agents/skills/invalid-parent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "invalid-parent", 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 worldcoin/world-chain --skill invalid-parent -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install worldcoin/world-chain invalid-parent --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/worldcoin/world-chain.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/invalid-parent .cursor/skills/invalid-parent && 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 "invalid-parent" agent skill from https://github.com/worldcoin/world-chain/tree/main/.agents/skills/invalid-parent into .cursor/skills/invalid-parent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "invalid-parent", 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/worldcoin/world-chain.git --path .agents/skills/invalid-parent--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 worldcoin/world-chain --skill invalid-parent -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install worldcoin/world-chain invalid-parent --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/worldcoin/world-chain.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/invalid-parent .gemini/skills/invalid-parent && 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 "invalid-parent" agent skill from https://github.com/worldcoin/world-chain/tree/main/.agents/skills/invalid-parent into .gemini/skills/invalid-parent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "invalid-parent", 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 worldcoin/world-chain invalid-parentInstalls 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 worldcoin/world-chain --skill invalid-parent -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/worldcoin/world-chain.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/invalid-parent .github/skills/invalid-parent && 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 "invalid-parent" agent skill from https://github.com/worldcoin/world-chain/tree/main/.agents/skills/invalid-parent into .github/skills/invalid-parent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "invalid-parent", 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 worldcoin/world-chain --skill invalid-parent -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install worldcoin/world-chain invalid-parent --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/worldcoin/world-chain.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/invalid-parent .opencode/skills/invalid-parent && 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 "invalid-parent" agent skill from https://github.com/worldcoin/world-chain/tree/main/.agents/skills/invalid-parent into .opencode/skills/invalid-parent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "invalid-parent", 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
invalid-parent- GitHub stars
- 116
- Token cost
- ~295 tokens
- SKILL.md length
- 135 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- MIT
At a glance
Trace a WIP1006 INVALIDPARENT cascade to its first ancestor with a different status or invalidation reason.
- Development work in your project
- Runs Python scripts from its folder; calls python3
What it does
Invalid Parent is an agent skill from worldcoin/world-chain. Trace a WIP1006 INVALIDPARENT cascade to its first ancestor with a different status or invalidation reason.
Its SKILL.md is about 300 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/trace_parent.py`).
It sits in Development. It works with Ethereum. The licence is MIT.
When your agent uses it
- Development work in your project
Example prompts
- “/invalid-parent”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 2b7dfe8. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python3
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
Invalid Parent loads about 295 tokens when it runs. Until then it costs about 31 tokens; SKILL.md has 135 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); the scripts in this folder are not scanned.
SKILL.md
The full file from worldcoin/world-chain at commit 2b7dfe8, republished under its MIT licence (© worldcoin). 135 words, ~295 tokens.
Download SKILL.mdSave it as
.claude/skills/invalid-parent/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- invalid-parent
- description
- Trace a WIP1006 INVALID_PARENT cascade to its first ancestor with a different status or invalidation reason.
Run python3 scripts/trace_parent.py <game-address> [mainnet|sepolia], resolving
the script relative to this skill directory. Execute it directly; reading or
recreating the script is unnecessary unless troubleshooting.
Default to mainnet for Ethereum/mainnet or no network; use sepolia when specified.
The script reads ETHEREUM_PROVIDER or ETHEREUM_SEPOLIA_PROVIDER respectively.
It requires only Python's standard library and a provider supporting JSON-RPC batches.
The script verifies the initial game reports CHALLENGER_WINS / INVALID_PARENT, then follows parentRef() to the first ancestor where either value differs. Reads use one block, with bounded requests, cycle detection, and a 200-hop limit. Failures exit nonzero; partial rows are not a completed trace.
Report the terminal address, GameStatus, InvalidationReason, and parent-hop count. Include the chain when short. This identifies the on-chain origin of the cascade, not the underlying cause of a proof timeout, and does not authenticate contract type.
© worldcoin, 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 1 other file (scripts) in .agents/skills/invalid-parent of worldcoin/world-chain.
- SKILL.md
- scripts/trace_parent.py
Open the folder on GitHubat commit 2b7dfe8
Compare with similar skills
Invalid Parent 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 |
|---|---|---|---|---|---|---|
| Invalid Parent this skillworldcoin/world-chain | 116 | — | ~295 | Automated safety check: Pass | MIT | |
| Wagmi Feature Developmentwevm/wagmi | 6.8k | — | ~3.8k | Automated safety check: Pass | MIT | |
| Release Roundethereumjs/ethereumjs-monorepo | 2.8k | — | ~2k | Automated safety check: Pass | None | |
| Update Est Fixturesethereumjs/ethereumjs-monorepo | 2.8k | — | ~3.3k | Automated safety check: Pass | None | |
| Starknet JSstarknet-io/starknet.js | 1.3k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Lean Reviewgeanlabs/gean | 177 | — | ~1.5k | Automated safety check: Pass | None |
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Update Est Fixtures
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More from worldcoin/world-chain
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Debug World Chain nodes with temporary admintracingDirectives log filters and targeted log collection.
Check Wip1006 Config
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Inspect the active WIP-1006 factory configuration from an L1 AnchorStateRegistry at one finalized snapshot, including safety state, Nitro PCR approvals, and optional implementation comparison.
Investigate Game
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Verify an Ethereum address is a WIP1006 dispute game and report its status, claim, bonds, proof configuration, and proposal context in a compact debugging table.
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List unresolved WIP1006 dispute game addresses by scanning backward through at most the newest 2000 entries in a supplied factory.
Recovery Parent
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Find the nearest defender-winning, ASR claim-valid game backward in a WIP-1006 lineage for the proposer and defender recovery-parent flag.
Scan Invalid Games
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Scan WIP1006 games inside their challenge deadline for root claims that disagree with a supplied L2 consensus RPC at finalized L2 blocks, including challenge status and game creator.
Related
Works with
Categories
Questions about Invalid Parent
What does Invalid Parent do?
Trace a WIP1006 INVALIDPARENT cascade to its first ancestor with a different status or invalidation reason. Invalid Parent is an agent skill from worldcoin/world-chain. Trace a WIP1006 INVALIDPARENT cascade to its first ancestor with a different status or invalidation reason.
When should I use Invalid Parent?
Invalid Parent fits situations like: development work in your project.
How do I install Invalid Parent in Claude Code?
Run `npx skills add worldcoin/world-chain --skill invalid-parent -a claude-code`. Or copy the skill folder (.agents/skills/invalid-parent in worldcoin/world-chain) into .claude/skills/invalid-parent in your project. Claude Code loads it when a task matches its description.
How do I install Invalid Parent in Codex?
Run `npx skills add worldcoin/world-chain --skill invalid-parent -a codex`. Or copy the skill folder (.agents/skills/invalid-parent in worldcoin/world-chain) into .agents/skills/invalid-parent in your project. Codex loads it when a task matches its description.
Can I use Invalid Parent 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 worldcoin/world-chain --skill invalid-parent -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/invalid-parent, .gemini/skills/invalid-parent, .github/skills/invalid-parent and .opencode/skills/invalid-parent in your project.
What does Invalid Parent need to run?
Going by SKILL.md and its folder, Invalid Parent needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Invalid Parent 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 Invalid Parent 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Invalid Parent use?
Invalid Parent 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 Invalid Parent use?
About 295 tokens (SKILL.md is roughly 1.2k 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 Invalid Parent?
Skills that share tags, products or a category with Invalid Parent: Wagmi Feature Development (wevm/wagmi, 6.8k stars), Release Round (ethereumjs/ethereumjs-monorepo, 2.8k stars), Update Est Fixtures (ethereumjs/ethereumjs-monorepo, 2.8k stars) and Starknet JS (starknet-io/starknet.js, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Invalid Parent?
worldcoin (a GitHub organization) maintains it in worldcoin/world-chain, which has 116 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 8, 2026.
Source: worldcoin/world-chain on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.