Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/obolnetwork/obol-stack/ethereum-local-walletnpx skills add ObolNetwork/obol-stack --skill ethereum-local-walletgit clone --depth 1 https://github.com/ObolNetwork/obol-stackWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/obolnetwork/obol-stack/ethereum-local-wallet)<a href="https://agentmods.dev/skills/obolnetwork/obol-stack/ethereum-local-wallet"><img src="https://agentmods.dev/badge/skills/obolnetwork/obol-stack/ethereum-local-wallet.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00055 | $0.01532 |
| Opus 5 | $0.00028 | $0.00766 |
| Sonnet 5 | $0.00011 | $0.00306 |
| Haiku 4.5 | $0.00006 | $0.00153 |
Grade A, and why
ethereum-local-wallet scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Ethereum Wallet
Sign and send Ethereum transactions through the local remote-signer service. The agent never accesses private keys directly — all signing is done via HTTP API calls to the remote-signer, which holds encrypted keystores.
When to Use
- Sending ETH or ERC-20 tokens
- Signing messages (EIP-191) or typed data (EIP-712)
- Interacting with smart contracts that modify state (write operations)
- Approving token allowances
- Any operation that requires a transaction signature
When NOT to Use
- Read-only queries — use the
ethereum-networksskill instead (rpc.sh) - Key generation — keys are managed by the
obolCLI, not by the agent - Cross-chain bridges — not supported in this skill
Quick Start
# List your signing addresses
python3 scripts/signer.py accounts
# Check remote-signer health
python3 scripts/signer.py health
# Sign a message
python3 scripts/signer.py sign-msg 0xYOUR_ADDRESS "Hello, Ethereum!"
# Sign a transaction (returns raw signed tx hex, does NOT broadcast)
python3 scripts/signer.py sign-tx \
--from 0xYOUR_ADDRESS --to 0xRECIPIENT \
--value 1000000000000000000 --network mainnet
# Sign AND broadcast a transaction via eRPC
python3 scripts/signer.py send-tx \
--from 0xYOUR_ADDRESS --to 0xRECIPIENT \
--value 1000000000000000000 --network mainnet
Available Commands
| Command | Description |
|---|---|
accounts |
List all signing addresses from the remote-signer |
health |
Check remote-signer /healthz endpoint |
sign <address> <hex-data> |
Sign a raw 32-byte hash |
sign-msg <address> <message> |
Sign a message with EIP-191 prefix |
sign-tx --from --to [--value] [--data] [--gas] [--nonce] [--network] |
Sign an EIP-1559 transaction |
send-tx --from --to [--value] [--data] [--network] |
Sign AND broadcast a transaction via eRPC |
sign-typed <address> <json> |
Sign EIP-712 typed data |
gas-info [--network] |
Print recommended base/tip/max fees from eth_feeHistory |
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago First seen · 128 lines · 55 tokens per session scan A c54f92b13b07
ethereum-local-wallet is a skill published in the GitHub repository ObolNetwork/obol-stack (11 stars, last pushed 2d ago), licensed Apache-2.0. It adds 55 tokens to every session and 1,532 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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