Skill: jolestar/ethereum-jsonrpc-skill (version 1.0.0)

--- name: ethereum-jsonrpc-skill description: Operate Ethereum execution JSON-RPC through UXC with the official execution OpenRPC schema, public EVM read methods, and eth_subscribe pubsub guardrails. --- # Ethereum JSON-RPC Skill Use this skill to run Ethereum execution JSON-RPC operations through `uxc` + JSON-RPC. Reuse the `uxc` skill for shared execution, auth, and error-handling guidance. ## Prerequisites - `uxc` is installed and available in `PATH`. - Network access to a compatible Ethereum execution JSON-RPC provider. - Access to the official execution OpenRPC schema URL: - `https://raw.githubusercontent.com/ethereum/execution-apis/assembled-spec/refs-openrpc.json` ## Scope This skill covers a safe read-first Ethereum execution surface: - chain identity and public state reads - block, balance, logs, and call-based state reads - `eth_subscribe` pubsub subscriptions for new heads, logs, and pending transactions This skill does **not** cover: - `eth_sendRawTransaction` - `personal_*`, `admin_*`, `debug_*`, `engine_*`, `txpool_*` - wallet signing flows - private/authenticated RPC providers with custom auth models ## Endpoint And Schema This skill defaults to a public read provider: - HTTPS RPC: `https://ethereum-rpc.publicnode.com` The operation surface comes from the official Ethereum execution OpenRPC schema: - `https://raw.githubusercontent.com/ethereum/execution-apis/assembled-spec/refs-openrpc.json` `uxc` JSON-RPC discovery normally depends on OpenRPC or `rpc.discover`. Ethereum RPC providers often do not expose discovery directly, so this skill uses a fixed `--schema-url` link and request flow. The official execution OpenRPC document is strong enough for normal request/response methods, but it does not currently expose pubsub methods such as `eth_subscribe`. Use the schema-backed link for reads, and use `uxc subscribe start` directly for subscriptions. For subscriptions, use a WebSocket Ethereum RPC provider that you have verified actually accepts `eth_subscribe`. Do not assume a public HTTPS host automatically guarantees the same `wss://` host is stable for pubsub. ## Authentication The default public read provider used by this skill does not require authentication. If a user later points the same workflow at a private Ethereum RPC provider, verify its auth model first before reusing this skill unchanged. ## Core Workflow 1. Use the fixed link command by default: - `command -v ethereum-jsonrpc-cli` - If missing, create it: `uxc link ethereum-jsonrpc-cli https://ethereum-rpc.publicnode.com --schema-url https://raw.githubusercontent.com/ethereum/execution-apis/assembled-spec/refs-openrpc.json` - `ethereum-jsonrpc-cli -h` 2. Inspect operation schema first: - `ethereum-jsonrpc-cli eth_blockNumber -h` - `ethereum-jsonrpc-cli eth_getBlockByNumber -h` - `ethereum-jsonrpc-cli eth_getBalance -h` 3. Prefer chain and balance/block reads before deeper state queries: - `ethereum-jsonrpc-cli eth_chainId` - `ethereum-jsonrpc-cli eth_blockNumber` - `ethereum-jsonrpc-cli eth_getBalance Address=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 Block=latest` 4. Execute with key/value or positional JSON: - key/value: `ethereum-jsonrpc-cli eth_getBalance Address=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 Block=latest` - positional JSON: `ethereum-jsonrpc-cli eth_getBlockByNumber '["latest", false]'` - nested positional JSON: `ethereum-jsonrpc-cli eth_call '[{"to":[REDACTED_SECRET],"data":"0x313ce567"},"latest"]'` 5. Use `uxc subscribe start` directly for pubsub streams: - `uxc subscribe start wss://<verified-ethereum-rpc-host> eth_subscribe '{"params":["newHeads"]}' --sink file:$HOME/.uxc/subscriptions/eth-new-heads.ndjson` - `uxc subscribe start wss://<verified-ethereum-rpc-host> eth_subscribe '{"params":["logs",{"address":[REDACTED_SECRET]}]}' --sink file:$HOME/.uxc/subscriptions/eth-logs.ndjson` - `uxc subscribe status <job_id>` - `uxc subscribe stop <job_id>` ## Recommended Read Operations - `net_version` - `eth_chainId` - `eth_blockNumber` - `eth_getBlockByNumber` - `eth_getBalance` - `eth_getLogs` - `eth_call` ## Recommended Subscription Operations - `eth_subscribe` Subscription `params[0]` modes that are usually most useful: - `newHeads` - `logs` - `newPendingTransactions` ## Guardrails - Keep automation on the JSON output envelope; do not use `--text`. - Parse stable fields first: `ok`, `kind`, `protocol`, `data`, `error`. - Stay on read-only methods and `eth_subscribe` by default. - The official execution OpenRPC schema drives read help and request execution, but it does not cover `eth_subscribe`; treat subscriptions as runtime-only flows, not schema-discovered operations. - Do not call write/admin/debug/engine methods through this skill without explicit follow-up design and review. - Use `uxc subscribe start` for pubsub methods; the fixed `ethereum-jsonrpc-cli` link is for normal request/response methods. - Subscription jobs should always write to a sink file so events can be inspected and replayed safely. - Before documenting or automating a public Ethereum pubsub host, confirm the specific provider actually exposes WebSocket JSON-RPC subscriptions; public HTTPS endpoints do not guarantee a matching `wss://` endpoint. - `ethereum-jsonrpc-cli <operation> ...` is equivalent to `uxc https://ethereum-rpc.publicnode.com --schema-url <ethereum_execution_openrpc_schema> <operation> ...`. ## References - Usage patterns: `references/usage-patterns.md` - Ethereum execution API specs: https://github.com/ethereum/execution-apis - Ethereum JSON-RPC overview: https://ethereum.org/developers/docs/apis/json-rpc/


Security scan verdicts — ClawScan: clean | static analysis: clean | VirusTotal: clean | SkillSpector: clean (LOW)