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 skills add ccashwell/evm-cortex --skill contract-verificationgit clone --depth 1 https://github.com/ccashwell/evm-cortexWrote 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/ccashwell/evm-cortex/contract-verification)<a href="https://agentmods.dev/skills/ccashwell/evm-cortex/contract-verification"><img src="https://agentmods.dev/badge/skills/ccashwell/evm-cortex/contract-verification/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ccashwell/evm-cortex/contract-verification"><img src="https://agentmods.dev/badge/skills/ccashwell/evm-cortex/contract-verification.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 7 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Data Exfiltration · line 55 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 169 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 69 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 171 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 132 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 132 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 136 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 | $0.00050 | $0.01643 |
| Opus 5.5 | $0.00020 | $0.00657 |
| Sonnet 5.5 | $0.00010 | $0.00329 |
| Haiku 4.5 | $0.00005 | $0.00164 |
Grade A, and why
contract-verification scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl "https://api.etherscan.io/api?module=contract&action=verifyproxycontract&apikey=$ETHERSCAN_API_KEY" \ How it starts
The opening of the file, as written. The whole thing — 224 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Contract Verification
Why Verify
Verified contracts show source code on block explorers, enabling:
- Public auditability
- Etherscan read/write UI for interaction
- Trust from users and integrators
- Required for many DeFi integrations
forge verify-contract
# Basic verification
forge verify-contract 0xContractAddress src/MyContract.sol:MyContract \
--chain-id 1 \
--etherscan-api-key $ETHERSCAN_API_KEY
# With constructor arguments
forge verify-contract 0xContractAddress src/MyToken.sol:MyToken \
--chain-id 1 \
--etherscan-api-key $ETHERSCAN_API_KEY \
--constructor-args $(cast abi-encode "constructor(string,string,uint256)" "MyToken" "MTK" 1000000000000000000000000)
# With compiler settings matching deployment
forge verify-contract 0xContractAddress src/MyContract.sol:MyContract \
--chain-id 1 \
--etherscan-api-key $ETHERSCAN_API_KEY \
--compiler-version v0.8.28 \
--num-of-optimizations 200
# Watch verification status
forge verify-contract 0xContractAddress src/MyContract.sol:MyContract \
--chain-id 1 \
--etherscan-api-key $ETHERSCAN_API_KEY \
--watch
Chain-Specific Verification
# Mainnet (Etherscan)
forge verify-contract $ADDR MyContract \
--chain-id 1 --etherscan-api-key $ETHERSCAN_API_KEY
# Base (Basescan)
forge verify-contract $ADDR MyContract \
--chain-id 8453 \
--verifier etherscan \
--verifier-url https://api.basescan.org/api \
--etherscan-api-key $BASESCAN_API_KEY
# Optimism (Optimistic Etherscan)
forge verify-contract $ADDR MyContract \
--chain-id 10 \
--verifier etherscan \
--verifier-url https://api-optimistic.etherscan.io/api \
--etherscan-api-key $OPSCAN_API_KEY
# Arbitrum (Arbiscan)
forge verify-contract $ADDR MyContract \
--chain-id 42161 \
--verifier etherscan \
--verifier-url https://api.arbiscan.io/api \
--etherscan-api-key $ARBISCAN_API_KEY
Blockscout Verification
# Blockscout uses a different verifier
forge verify-contract $ADDR MyContract \
--chain-id 8453 \
--verifier blockscout \
--verifier-url https://base.blockscout.com/api/
# Blockscout doesn't require an API key for most instances
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.
- 1mo ago First seen · 224 lines · 50 tokens per session scan A 7948a0637a44
contract-verification is a skill published in the GitHub repository ccashwell/evm-cortex (131 stars, last pushed 17d ago), licensed MIT. It adds 50 tokens to every session and 1,643 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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