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OpenSea Marketplace · bankrbot | DecimalAI

financeby bankrbot

OpenSea Marketplace

bankrbot/opensea-marketplace

Source bankrbot/skills ↗License MIT

Buy and sell NFTs on OpenSea's Seaport marketplace. Fulfill listings, accept offers, create new orders, cross-chain purchases, and sweep multiple listings. Requires wallet signing; for read-only queries use opensea-api instead.

SkillScore86Maintained

Automatic

Coding pack

Last verified 8/15/2026

What it changes

Passed 18 of 21 test cases with the skill, and 5 of 21 without it.

Without skill23%

With skill86%

Checks it passed that the model alone missed

Recommends retrying up to 3 times.
Places the recipient flag before the fulfiller address parameter.
Specifies exponential backoff intervals of 2s, 4s, and 8s for the retries.

and 16 more in the full report

14 fixed5 passed either way3 still failing0 broke

Pass-rate lift: +64 pp
Tokens: +46%
Agent turns: 0%
Response time: -50%

Model gemini-3.6-flashMeasured 8/15/2026v119 of 22 cases passed with skill · 21 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/bankrbot-opensea-marketplace/SKILL.md https://app.decimal.ai/s/bankrbot-opensea-marketplace/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add bankrbot-opensea-marketplace, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/bankrbot-opensea-marketplace/ and pins it in .decimal/skills.lock

decimalai skills add bankrbot-opensea-marketplace

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/bankrbot-opensea-marketplace/SKILL.md https://app.decimal.ai/s/bankrbot-opensea-marketplace/SKILL.md

Raw file: /s/bankrbot-opensea-marketplace/SKILL.md ↗ · machine-readable summary at /s/bankrbot-opensea-marketplace.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 14 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 14

Prompt

My call to `./scripts/opensea-fulfill-offer.sh` returned HTTP 429 Rate Limited. Should I immediately retry with 2-second backoff or wait longer?

What was checked, without and with the skill
Checked	Without skill	With skill
Recommends waiting 60 seconds before retrying when encountering a 429 status code.	Missed	Passed
Advises applying exponential backoff after the initial wait.	Passed	Passed

case-12 · gemini-3.6-flash · 8/15/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md154 lines6 filesincludes scripts

OpenSea Marketplace

Buy and sell NFTs on OpenSea's Seaport marketplace. Fulfill listings, accept offers, create new orders, cross-chain purchases, and sweep multiple listings.

When to use this skill (`scope_in`)

Use opensea-marketplace when you need to execute trades:

Buy an NFT (fulfill a listing)
Sell an NFT (accept an offer)
Create a new Seaport listing or offer
Cross-chain NFT purchases (pay with tokens from a different chain)
Sweep multiple listings in one transaction

When NOT to use this skill (`scope_out`, handoff)

Need	Use instead
Query collection/NFT data, search, browse listings	`opensea-api`
Swap ERC20 tokens	`opensea-swaps`
Set up wallet signing providers	`opensea-wallet`
Build/register/gate AI agent tools	`opensea-tool-sdk`

Buying an NFT

Find the NFT and check its listing (use opensea-api skill):
```
opensea listings best-for-nft cool-cats-nft 1234
```

Get the order hash from the response, then get fulfillment data:

./scripts/opensea-fulfill-listing.sh ethereum 0x_order_hash 0x_your_wallet

The response contains transaction data to execute onchain.

Track record

Benchmark

18 / 21

test cases passed, vs 5 / 21 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

bankrbot / skills

opensea/opensea-marketplace/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1Bundled 5 files · scripts

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

bankrbot/openseaQuery NFT and token data, trade NFTs on Seaport, swap ERC20 tokens via DEX aggregator, configure wallet signing providers, and build/register/gate AI agent tools on Base. Covers the full OpenSea developer surface across CLI, MCP server, shell scripts, and SDK. Pick the right sub-skill using the routing table below, then read that sub-skill's SKILL.md for operational detail.Close match+77 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

OpenSea Marketplace

When to use this skill (scope_in)

When NOT to use this skill (scope_out, handoff)

Buying an NFT

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills

When to use this skill (`scope_in`)

When NOT to use this skill (`scope_out`, handoff)