Surf Crypto Data API
BlockRunAI/blockrun-mcp
Routes crypto market, on-chain, wallet and prediction-market lookups to the Surf data API through a local ClawRouter, paid per call.
Queries on-chain data with the Chainbase CLI and tracks crypto social trends: token holders and prices, wallet balances, ENS names, narratives and KOL signals.
Install Web3 Data Explorer
$ npx skills add internet-court/internet-court-skill --skill web3-data -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install internet-court/internet-court-skill web3-data --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/internet-court/internet-court-skill.git skills-src && mkdir -p .claude/skills && cp -r skills-src/vendored/chainbase/web3-data .claude/skills/web3-data && 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 "web3-data" agent skill from https://github.com/internet-court/internet-court-skill/tree/main/vendored/chainbase/web3-data into .claude/skills/web3-data/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web3-data", 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/internet-court/internet-court-skill/tree/main/vendored/chainbase/web3-dataType 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 internet-court/internet-court-skill --skill web3-data -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install internet-court/internet-court-skill web3-data --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/internet-court/internet-court-skill.git skills-src && mkdir -p .agents/skills && cp -r skills-src/vendored/chainbase/web3-data .agents/skills/web3-data && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "web3-data" agent skill from https://github.com/internet-court/internet-court-skill/tree/main/vendored/chainbase/web3-data into .agents/skills/web3-data/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web3-data", 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 internet-court/internet-court-skill --skill web3-data -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install internet-court/internet-court-skill web3-data --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/internet-court/internet-court-skill.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/vendored/chainbase/web3-data .cursor/skills/web3-data && 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 "web3-data" agent skill from https://github.com/internet-court/internet-court-skill/tree/main/vendored/chainbase/web3-data into .cursor/skills/web3-data/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web3-data", 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/internet-court/internet-court-skill.git --path vendored/chainbase/web3-data--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 internet-court/internet-court-skill --skill web3-data -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install internet-court/internet-court-skill web3-data --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/internet-court/internet-court-skill.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/vendored/chainbase/web3-data .gemini/skills/web3-data && 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 "web3-data" agent skill from https://github.com/internet-court/internet-court-skill/tree/main/vendored/chainbase/web3-data into .gemini/skills/web3-data/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web3-data", 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 internet-court/internet-court-skill web3-dataInstalls 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 internet-court/internet-court-skill --skill web3-data -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/internet-court/internet-court-skill.git skills-src && mkdir -p .github/skills && cp -r skills-src/vendored/chainbase/web3-data .github/skills/web3-data && 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 "web3-data" agent skill from https://github.com/internet-court/internet-court-skill/tree/main/vendored/chainbase/web3-data into .github/skills/web3-data/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web3-data", 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 internet-court/internet-court-skill --skill web3-data -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install internet-court/internet-court-skill web3-data --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/internet-court/internet-court-skill.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/vendored/chainbase/web3-data .opencode/skills/web3-data && 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 "web3-data" agent skill from https://github.com/internet-court/internet-court-skill/tree/main/vendored/chainbase/web3-data into .opencode/skills/web3-data/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web3-data", 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
web3-data- GitHub stars
- 6.4k
- Used in
- 1 other repo
- Token cost
- ~2k tokens
- SKILL.md length
- 716 words
- Files
- 8 (incl. references)
- Skills in repo
- 80
- Repo updated
- First seen
- Licence
- MIT
At a glance
Queries on-chain data with the Chainbase CLI and tracks crypto social trends: token holders and prices, wallet balances, ENS names, narratives and KOL signals.
- Works in 5 steps: Identify intent — Determine what data… → Resolve identifiers — If user gives… → Select command — Use the routing table… → …
- Finding the top holders of a token
- SKILL.md covers Quick Reference, Chain IDs, Routing Logic and Workflow, plus 6 more sections
- Calls npm and npx; reaches api.chainbase.com; needs CHAINBASE_API_KEY
What it does
Two services share the skill. The first uses the Chainbase CLI for blocks, transactions, token metadata, prices and price history, holders and transfers, native and ERC20 balances, DeFi portfolios and ENS or Space ID lookups. A routing table maps each request to a command, and flags select JSON output and a chain, with Ethereum as the default.
The second service, Tops, covers trending crypto narratives, social mentions, discussion on X, topic heat and community signals, with details in a Tops API reference. Setup means installing chainbase-cli with npm or running it with npx and supplying an API key through config or the CHAINBASE_API_KEY variable. A demo key is the fallback, and an optional x402 flag enables pay-per-call payments.
When your agent uses it
- Finding the top holders of a token
- Checking a wallet's token balances or DeFi positions
- Resolving an ENS name to an address or the reverse
- Looking up token price history or recent transfers
- Tracking trending crypto narratives and social mentions
Example prompts
- “Who are the top ten holders of USDT on Ethereum?”
- “Show the ERC20 balances for this wallet on Base.”
- “What crypto narratives are trending on crypto Twitter this week?”
- “Resolve alice.eth and list the ENS domains held by that address.”
Requirements
- Node.js with npm or npx, to run chainbase-cli
- A Chainbase API key (a demo key is the fallback)
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Identify intent — Determine what data the user needs
- Resolve identifiers — If user gives token name (e.g. "USDT"), look up the contract address. Common tokens
- Select command — Use the routing table above; fall back to SQL API for complex/custom queries
- Execute — Run the CLI command. Add --json when you need to parse the output programmatically
- Present results — Format data clearly with tables for lists, highlight key insights
What it can do on your machine
Read from SKILL.md and the folder at commit fa89195. 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
Shell commands in SKILL.md call:
npmnpx
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
api.chainbase.com
Also links to:
github.complatform.chainbase.comtops.chainbase.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
CHAINBASE_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Web3 Data Explorer loads about 2k tokens when it runs, and up to ~4.9k if it reads all its reference files. Until then it costs about 230 tokens; SKILL.md has 716 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 internet-court/internet-court-skill at commit fa89195, republished under its MIT licence (© internet-court). 716 words, ~2,032 tokens.
Download SKILL.mdSave it as
.claude/skills/web3-data/SKILL.md (or your agent's skills folder). This skill also uses 7 other files; get the full folder from GitHub.- name
- web3-data
- description
- Two services in one skill: (1) Web3 on-chain data via Chainbase CLI — use when the user asks about blockchain data, token holders, wallet addresses, token prices, ENS domains, transactions, DeFi portfolios, or any on-chain analytics. Triggers: "top holders of", "who holds", "wallet address", "token price", "token transfers", "ENS domain", "on-chain data", "blockchain query", "SQL query on-chain", across Ethereum, BSC, Polygon, Arbitrum, Optimism, Base, Avalanche, zkSync, and other EVM chains. (2) Crypto social intelligence via Tops (chainbase tops) — use when the user asks about trending crypto narratives, social mentions, Twitter/X crypto discussions, narrative discovery, topic heat, or KOL/community signals. Triggers: "trending topics", "crypto narrative", "what's trending in crypto", "social mentions", "who is talking about", "crypto twitter", "KOL signals", "narrative search", "topic posts".
Web3 Data Explorer (Chainbase)
Query on-chain data via the Chainbase CLI.
Quick Reference
Install: npm install -g chainbase-cli (or use npx chainbase-cli)
Auth: Set API key via chainbase config set api-key YOUR_KEY, or env CHAINBASE_API_KEY. Falls back to demo key. If rate-limited, direct user to https://platform.chainbase.com to get a key.
x402 Payment: Supports pay-per-call micropayments via --x402 flag. Setup: chainbase config set private-key 0x...
# Top token holders
chainbase token top-holders 0xdAC17F958D2ee523a2206206994597C13D831ec7 --chain 1 --limit 10
# Token price
chainbase token price 0xdAC17F958D2ee523a2206206994597C13D831ec7
# ENS resolve
chainbase domain ens-resolve vitalik.eth
# SQL query
chainbase sql execute "SELECT * FROM ethereum.blocks ORDER BY number DESC LIMIT 5"Use --json for machine-parseable output. Use --chain <id> to target a specific chain.
Chain IDs
| Chain | ID | Chain | ID |
|---|---|---|---|
| Ethereum | 1 | Optimism | 10 |
| BSC | 56 | Base | 8453 |
| Polygon | 137 | zkSync | 324 |
| Avalanche | 43114 | Arbitrum | 42161 |
Default to Ethereum (chain 1) unless user specifies otherwise.
Routing Logic
Match user intent to the right CLI command:
| User wants | CLI command |
|---|---|
| Latest block number | chainbase block latest |
| Block details | chainbase block detail <number> |
| Transaction detail | chainbase tx detail <hash> |
| Wallet transaction history | chainbase tx list <address> |
| Token info (name, symbol, supply) | chainbase token metadata <contract> |
| Token price | chainbase token price <contract> |
| Historical token price | chainbase token price-history <contract> --from <ts> --to <ts> |
| List of holder addresses | chainbase token holders <contract> |
| Top token holders / who holds a token | chainbase token top-holders <contract> |
| Token transfer history | chainbase token transfers --contract <addr> |
| Native token balance (ETH/BNB) | chainbase balance native <address> |
| ERC20 token balances of wallet | chainbase balance tokens <address> |
| DeFi portfolio positions | chainbase balance portfolios <address> |
| ENS domains held by address | chainbase domain ens <address> |
| ENS name → address | chainbase domain ens-resolve <name> |
| Address → ENS name | chainbase domain ens-reverse <address> |
| Space ID resolve (BSC) | chainbase domain spaceid-resolve <domain> |
| Space ID reverse (BSC) | chainbase domain spaceid-reverse <address> |
| Call smart contract function | chainbase contract call --address <contract> --function "fn" --abi '[...]' --params '[...]' |
| Anything not covered above | SQL API: chainbase sql execute "SELECT ..." |
Workflow
- Identify intent — Determine what data the user needs
- Resolve identifiers — If user gives token name (e.g. "USDT"), look up the contract address. Common tokens:
- USDT:
0xdAC17F958D2ee523a2206206994597C13D831ec7(ETH) - USDC:
0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48(ETH) - WETH:
0xC02aaA39b223FE8D0A0e5c4F27eAD9083C756Cc2(ETH) - DAI:
0x6B175474E89094C44Da98b954EedeAC495271d0F(ETH) - WBTC:
0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599(ETH) - If unknown, use
chainbase token metadata <contract>or ask the user for the contract address
- USDT:
- Select command — Use the routing table above; fall back to SQL API for complex/custom queries
- Execute — Run the CLI command. Add
--jsonwhen you need to parse the output programmatically - Present results — Format data clearly with tables for lists, highlight key insights
Global Options
All commands support these options:
| Option | Description | Default |
|---|---|---|
--chain <id> | Target chain | 1 (Ethereum) |
--json | Machine-parseable JSON output | false |
--page <n> | Page number for paginated results | 1 |
--limit <n> | Results per page | 20 |
--x402 | Enable x402 micropayment mode | false |
Show full SKILL.md (287 more words)Show less
SQL API Fallback
When CLI commands don't cover the query, translate user intent to SQL:
chainbase sql execute "SELECT from_address, SUM(value) as total FROM ethereum.token_transfers WHERE contract_address = '0x...' GROUP BY from_address ORDER BY total DESC LIMIT 20"Common table patterns (replace ethereum with chain name):
{chain}.blocks— Block data{chain}.transactions— Transactions{chain}.token_transfers— ERC20 transfers{chain}.token_metas— Token metadata{chain}.logs— Event logs
SQL constraints: max 100,000 results per query.
For full command help, run chainbase --help or chainbase <command> --help.
Crypto Social Intelligence (Tops)
Query crypto social signals via chainbase tops. No API key required — free to use.
Service: Tops — trending narratives, topic discovery, Twitter/X mentions.
Base URL: https://api.chainbase.com/tops (called internally by the CLI)
Rate limit: 10 req/s · 60 req/min · 600 req/hour (per client IP)
Quick Reference
# List trending crypto topics (default: English)
chainbase tops trending
chainbase tops trending --language zh # Chinese
chainbase tops trending --language ko # Korean
# Get structured details for a topic
chainbase tops topic <topic_id>
# Get posts/tweets under a topic
chainbase tops posts <topic_id>
# Search narrative candidates by keyword
chainbase tops search "RWA"
chainbase tops search "AI Agent"
# Search recent Twitter/X mentions
chainbase tops mentions "Ethereum ETF"Use --json for machine-parseable output.
Routing Logic
Match user intent to the right subcommand:
| User wants | CLI command |
|---|---|
| What's trending in crypto right now | chainbase tops trending [--language <lang>] |
| Details / summary of a specific topic | chainbase tops topic <topic_id> |
| Raw tweets / posts under a topic | chainbase tops posts <topic_id> |
| Find topics related to a narrative keyword | chainbase tops search <keyword> |
| Recent Twitter/X mentions of a project or keyword | chainbase tops mentions <keyword> |
Workflow
Trend Tracking
chainbase tops trending→ get current top topics (noteidfields)chainbase tops topic <id>→ dive into summary, keywords, representative tweetschainbase tops posts <id>→ retrieve raw tweets for sentiment analysis
Narrative Discovery
chainbase tops search <keyword>→ find candidate topics from a vague term- Cluster/summarize candidates, identify the target topic ID
chainbase tops topic <id>→ confirm topic details
Real-time Monitoring
chainbase tops mentions <keyword>→ monitor social mentions of a project/token- Extract stance, sentiment, key voices from results
Data Schemas
Story (topic): id, keyword, summary, score, current_rank, rank_status (new/up/down/same), is_new, authors[], tweet_urls[], first_tweet_time, snapshot_time
Tweet: id, text, media_json, user → {user_id, name, screen_name, blue_verified, profile_image}
© internet-court, 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 7 other files (references) in vendored/chainbase/web3-data of internet-court/internet-court-skill.
- SKILL.md
- .gitignore
- CLAUDE.md
- LICENSE
- README.md
- clawhub.json
- references/api-endpoints.md
- references/tops-api.md
Open the folder on GitHubat commit fa89195
Used in 1 other repository
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in internet-court/internet-court-skill, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Web3 Data Explorer 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 |
|---|---|---|---|---|---|---|
| Web3 Data Explorer this skillinternet-court/internet-court-skill | 6.4k | 1 repos | ~2k | Automated safety check: Pass | MIT | |
| Surf Crypto Data APIBlockRunAI/blockrun-mcp | 392 | — | ~1.7k | Automated safety check: Pass | MIT | |
| Bluesky Zeitgeist Sampleroaustegard/claude-skills | 150 | 1 repos | ~1.4k | Automated safety check: Pass | MIT | |
| On-Chain Data AnalysisHKUDS/Vibe-Trading | 35k | — | ~2.5k | Automated safety check: Pass | MIT | |
| Twitter Searchsundial-org/awesome-openclaw-skills | 663 | — | ~2.3k | Automated safety check: Pass | None | |
| Minara Crypto Trading and WalletMinara-AI/minara-skills | 358 | 1 repos | ~5.7k | Automated safety check: Pass | None |
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Related
Works with
Categories
Questions about Web3 Data Explorer
What does Web3 Data Explorer do?
Queries on-chain data with the Chainbase CLI and tracks crypto social trends: token holders and prices, wallet balances, ENS names, narratives and KOL signals. Two services share the skill. The first uses the Chainbase CLI for blocks, transactions, token metadata, prices and price history, holders and transfers, native and ERC20 balances, DeFi portfolios and ENS or Space ID lookups.
When should I use Web3 Data Explorer?
Web3 Data Explorer fits situations like: finding the top holders of a token; checking a wallet's token balances or DeFi positions; resolving an ENS name to an address or the reverse; looking up token price history or recent transfers.
How do I install Web3 Data Explorer in Claude Code?
Run `npx skills add internet-court/internet-court-skill --skill web3-data -a claude-code`. Or copy the skill folder (vendored/chainbase/web3-data in internet-court/internet-court-skill) into .claude/skills/web3-data in your project. Claude Code loads it when a task matches its description.
How do I install Web3 Data Explorer in Codex?
Run `npx skills add internet-court/internet-court-skill --skill web3-data -a codex`. Or copy the skill folder (vendored/chainbase/web3-data in internet-court/internet-court-skill) into .agents/skills/web3-data in your project. Codex loads it when a task matches its description.
Can I use Web3 Data Explorer 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 internet-court/internet-court-skill --skill web3-data -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/web3-data, .gemini/skills/web3-data, .github/skills/web3-data and .opencode/skills/web3-data in your project.
What does Web3 Data Explorer need to run?
Going by SKILL.md and its folder, Web3 Data Explorer needs the command-line tools its instructions call (npm and npx) and credentials named CHAINBASE_API_KEY. Our summary lists: Node.js with npm or npx, to run chainbase-cli; A Chainbase API key (a demo key is the fallback).
Does Web3 Data Explorer access the network?
SKILL.md names 4 domains. In commands or code: api.chainbase.com; the agent is likely to contact it when it follows the instructions. As links in the text: github.com, platform.chainbase.com and tops.chainbase.com. This is read from the text; nothing was executed.
Is Web3 Data Explorer 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 Web3 Data Explorer use?
Web3 Data Explorer is published under the MIT licence (from the LICENSE file in the skill folder). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Web3 Data Explorer use?
About 2k tokens (SKILL.md is roughly 8.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.9k tokens, read only when the agent opens those files.
What are the alternatives to Web3 Data Explorer?
Skills that share tags, products or a category with Web3 Data Explorer: Surf Crypto Data API (BlockRunAI/blockrun-mcp, 392 stars), Bluesky Zeitgeist Sampler (oaustegard/claude-skills, 150 stars), On-Chain Data Analysis (HKUDS/Vibe-Trading, 35k stars) and Twitter Search (sundial-org/awesome-openclaw-skills, 663 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Web3 Data Explorer?
internet-court (a GitHub organization) maintains it in internet-court/internet-court-skill, which has 6,404 GitHub stars. The repository holds 80 skills in this directory. The repository was last updated on August 19, 2026.
Source: internet-court/internet-court-skill on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.