addresses

A checked directory of contract addresses for widely used Ethereum protocols on the main network and layer-2 networks, which process transactions with lower fees. It points to reference files for stablecoins, exchanges, lending, staking, and infrastructure.

In plain words
What is it for?
Use it when writing or reviewing blockchain code that interacts with known protocols, tokens, exchanges, lending systems, staking services, or account infrastructure.
Why use it?
It avoids guessing addresses, where a mistake can send funds to the wrong contract. It also tells you where to find the address for a particular protocol or use case.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/obolnetwork/obol-stack/addresses
Any agent
npx skills add ObolNetwork/obol-stack --skill addresses
Clone the repo
git clone --depth 1 https://github.com/ObolNetwork/obol-stack

Made for: Claude Code, Codex.

Per session 162 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,592 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00162 $0.01592
Opus 5 $0.00081 $0.00796
Sonnet 5 $0.00032 $0.00318
Haiku 4.5 $0.00016 $0.00159

Measured 2d ago against content hash da60f444aa38, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

addresses 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 2d 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.

internal/embed/skills/addresses/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Contract Addresses

CRITICAL: Never hallucinate a contract address. Wrong addresses mean lost funds. If an address isn't in the relevant references/ file, look it up on the block explorer or the protocol's official docs before using it.

Last verified: February 16, 2026 (addresses verified onchain via eth_getCode + eth_call).

How to find an address

Open the file that matches the category you need:

Reference What's in it
references/obol-payments.md Start here for anything payment-related — USDC + OBOL on the chains the Stack supports, Permit2, ERC-8004 registries, facilitator
references/stablecoins.md USDC, USDT, DAI, WETH on mainnet + L2s
references/staking.md Lido (stETH, wstETH, withdrawals), Rocket Pool, Obol Splits, Splits.org
references/dex.md Uniswap V2/V3/V4, Universal Router, Permit2, 1inch, UNI token
references/defi.md Aave, Compound, MakerDAO/Sky, sDAI, Curve, Balancer, Yearn V3
references/l2-native.md Aerodrome (Base), Velodrome (OP), GMX, Pendle, Camelot, SyncSwap, Morpho
references/infrastructure.md Safe, ERC-4337 EntryPoint, Chainlink, EigenLayer, OpenSea Seaport, ENS, deterministic deployer
references/bridges.md Chainlink CCIP Router, Across SpokePool, Arbitrum One + Robinhood Chain canonical bridges
references/robinhood-chain.md Robinhood Chain (4663) — chain metadata, canonical bridge L1+L2 contracts, tokens (bridged USDC, USDG, WETH), ecosystem notes
references/agents-and-tokens.md ERC-8004 registries, major tokens (UNI, AAVE, COMP, MKR, LDO, WBTC, stETH, rETH)

Verify any address at runtime

# Check contract bytecode exists (returns 0x for an EOA)
sh scripts/rpc.sh code 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48

# Read contract identity
sh scripts/rpc.sh call 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 "symbol()(string)"

Read the full file on GitHub · 94 lines

Files

What ships with it

10 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.

Changes

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.

  1. 2d ago First seen · 94 lines · 162 tokens per session scan A da60f444aa38

Subscribe to this mod's changes

addresses is a skill published in the GitHub repository ObolNetwork/obol-stack (11 stars, last pushed 3d ago), licensed Apache-2.0. It adds 162 tokens to every session and 1,592 once invoked, about $0.0008 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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