Add OpenSea NFT automint partner skill

[penumbraaasol]

Unattended minting of OpenSea SeaDrop drops, with Zerion CLI handling funding and verification.

What it enables: discover open SeaDrop drops, judge them on live market data, fund the minting wallet on the right chain, wait for the mint window, and execute with safety rails — unsupervised.

Zerion CLI commands it composes with:
zerion positions find spendable balances per chain
zerion swap same-chain top-up
zerion bridge fund the mint chain from another
zerion portfolio confirm funds landed on the right chain
zerion history confirm the mint transaction
zerion pnl post-mint accounting

Why the combination is needed: Zerion cannot submit the mint itself — none of its chain-touching commands accept arbitrary to/data/value, and a SeaDrop mintPublic() call is not a swap, bridge, or send. Equally, a mint bot with no funding layer cannot get the right asset onto the right chain before a window opens. Each half is unusable alone for this flow.

Also documents two OpenSea data hazards that mislead any integration: the advertised floor is a listing rather than a trade, and a sold-out drop still reports MINTING.

Reference implementation: https://github.com/penumbraaasol/automint

[bashalex]

I would request changes before merging. The funding/minting split makes sense, but the instructions overstate the external bot’s safeguards.

Reviewed PR commit 048315b and the referenced automint implementation at 55fdffe.

1. [P1] Gas limits are checked but never enforced on the signed transaction. The advertised gas ceiling checks an estimate, but sendTransaction receives only to, data, and value. Fees can be recalculated above the ceiling. Fee-estimation failure also lets execution proceed, counting gas as zero. Pass validated fee/gas bounds into signing and fail closed when estimates fail.

2. [P1] Continuous mode silently ignores the documented lifetime cap. run does not forward flags.cap. I reproduced that run --live --cap 0.05 leaves both cap and budget unset. The separate --budget check excludes gas and uses the earlier discovery price. The PR should not advertise bounded unattended spending until the executor enforces a total budget immediately before signing.

3. [P1] The package invocation is unverified and currently broken. Line 17 recommends npx automint, but npm currently returns “Not Found”; the linked repository declares package opensea-mint-bot and binary mint. If somebody publishes automint, that command could execute unrelated code. Remove it, pin a reviewed source revision, and apply the repository’s required 15-day dependency cooldown to installation.

4. [P1] Successful simulation does not validate the transaction’s intent. The bot’s gated-stage fallback accepts API-provided to/data/value without checking the destination, selector, collection, recipient, or quantity. The price ceiling checks the public-stage price instead of the returned transaction’s unit cost. An unintended transfer can simulate successfully. Restrict this integration to locally constructed public mints, or validate the fallback transaction before signing.

5. [P2] The funding examples fund the treasury, not the separate mint wallet. Both examples use --wallet treasury. Swap output returns there, and bridging defaults to the same wallet. Add --to-address <mint-address> for bridging and an explicit transfer after swapping. Include mint-wallet creation/address discovery so the isolation advice is executable.

6. [P2] The main example cannot mint unattended. The live command omits --yes. After waiting for the window, the bot prompts; without a TTY it cancels. Keystore unlocking also needs unattended configuration. Document both prerequisites, with spending limits established before enabling unattended execution.

7. [P2] “A bid is escrowed” is false for this EVM flow. That claim gives misleading confidence in exit liquidity. OpenSea says collection offers preauthorize wallet funds; funds move only upon acceptance. Offers can become unfunded or be canceled. Treat them as a market signal, not a guaranteed exit. OpenSea documentation

Minor fixes: missing required YAML frontmatter, missing README registration, and nonexistent capabilities/agent.md reference.

I verified the execution issues with isolated mocks; no live transactions were made. This was a targeted review, not a full audit of the external bot or its dependencies.