Is Nft Floor X402 safe to install?

SaferSkills independently audited Nft Floor X402 (Agent Skill) and scored it 100/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 0 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.

CategoryWeightCategory scoreContribution

Securityprompt, exec, net, exfil, eval

35%

100

35.0 pts

Supply chainhash, typosquat, maintainer, lockfile

20%

100

20.0 pts

Maintenancestaleness, pinning, CI

15%

100

15.0 pts

TransparencySKILL.md, perms, README

15%

100

15.0 pts

Communityinstalls, verify, response

15%

100

15.0 pts

Findings & checks · 0 flagged

Securityscore 100 · 0 findings

✓—All security checks passedNo findings in this category for the latest scan.pass

Supply chainscore 100 · 0 findings

✓—All supply chain checks passedNo findings in this category for the latest scan.pass

Maintenancescore 100 · 0 findings

✓—All maintenance checks passedNo findings in this category for the latest scan.pass

Transparencyscore 100 · 0 findings

✓—All transparency checks passedNo findings in this category for the latest scan.pass

Communityscore 100 · 0 findings

✓—All community checks passedNo findings in this category for the latest scan.pass

The primary manifest — the file an agent reads to learn what this artifact does.

README.md · 1 file

README.md7.6 KB · Markdown

NFT Floor Price & Rarity API

NFT collection floor price, volume, holders, rarity data. Ethereum and Base via Alchemy. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "nft-floor": {
      "url": "https://nft-floor.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl "https://nft-floor.api.klymax402.com/api/collection?address=0x0000000000000000000000000000000000dEaD"
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

Tool	Method	Path	Price	Description
`nft_get_collection_data`	GET	`/api/collection`	$0.012	Get NFT collection floor price, volume, and stats
`nft_get_collection_data`	POST	`/api/collection`	$0.012	Get NFT collection floor price, volume, and stats (POST variant)
`nft_get_token_rarity`	GET	`/api/rarity`	$0.008	Get NFT token rarity rank, score, and trait floor prices
`nft_get_token_rarity`	POST	`/api/rarity`	$0.008	Get NFT token rarity rank, score, and trait floor prices (POST variant)

`nft_get_collection_data`

Use this when you need NFT collection floor price, volume, or holder data. Returns comprehensive collection stats from Alchemy for Ethereum and Base NFTs.

Parameters

Name	Type	Required	Description
`address`	string	yes	NFT collection contract address. e.g. 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D (BAYC)
`chain`	string	no	Blockchain: ethereum or base. Default: ethereum

Returns

floorPrice -- current floor price in ETH and USD
volume24h -- 24-hour trading volume in ETH and USD
totalSupply -- total number of NFTs in the collection
holderCount -- number of unique holders
listedCount -- number of NFTs currently listed for sale
listedPercent -- percentage of supply listed
topTraitFloors -- floor prices broken down by top traits

Example response:

{"floorPrice":{"eth":12.5,"usd":44000},"volume24h":{"eth":89.3,"usd":314000},"totalSupply":10000,"holderCount":5421,"listedCount":312,"listedPercent":3.12,"topTraitFloors":[{"trait":"Gold Fur","floor":45.2}]}

When to use: tracking NFT collection values, comparing collections, or monitoring floor price movements. Essential for NFT portfolio valuation and market analysis.

`nft_get_collection_data`

Use this when you need NFT collection floor price, volume, or holder data. Returns comprehensive collection stats from Alchemy for Ethereum and Base NFTs. POST variant of nft_get_collection_data -- same params passed as JSON body instead of query string.

Parameters

Name	Type	Required	Description
`address`	string	yes	NFT collection contract address. e.g. 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D (BAYC)
`chain`	string	no	Blockchain: ethereum or base. Default: ethereum

Returns

floorPrice -- current floor price in ETH and USD
volume24h -- 24-hour trading volume in ETH and USD
totalSupply -- total number of NFTs in the collection
holderCount -- number of unique holders
listedCount -- number of NFTs currently listed for sale
listedPercent -- percentage of supply listed
topTraitFloors -- floor prices broken down by top traits

Example response:

{"floorPrice":{"eth":12.5,"usd":44000},"volume24h":{"eth":89.3,"usd":314000},"totalSupply":10000,"holderCount":5421,"listedCount":312,"listedPercent":3.12,"topTraitFloors":[{"trait":"Gold Fur","floor":45.2}]}

When to use: tracking NFT collection values, comparing collections, or monitoring floor price movements. Essential for NFT portfolio valuation and market analysis.

`nft_get_token_rarity`

Use this when you need rarity data for a specific NFT token. Returns rarity rank, score, attributes, and trait-level floor prices for valuation.

Parameters

Name	Type	Required	Description
`address`	string	yes	NFT collection contract address
`tokenId`	string	yes	Token ID within the collection. e.g. 1234
`chain`	string	no	Blockchain: ethereum or base. Default: ethereum

Returns

rarityRank -- token's rarity rank within the collection (e.g. 142 out of 10000)
rarityScore -- computed rarity score
totalSupply -- total tokens in the collection
attributes -- array of token traits with name, value, frequency, and trait floor price
estimatedValue -- estimated value based on rarity and trait floors

Example response:

{"rarityRank":142,"rarityScore":285.4,"totalSupply":10000,"attributes":[{"trait":"Background","value":"Gold","frequency":0.02,"traitFloor":18.5},{"trait":"Eyes","value":"Laser","frequency":0.04,"traitFloor":15.2}],"estimatedValue":{"eth":22.3,"usd":78500}}

When to use: valuing individual NFTs, finding underpriced tokens, or building rarity-based trading strategies.

`nft_get_token_rarity`

Use this when you need rarity data for a specific NFT token. Returns rarity rank, score, attributes, and trait-level floor prices for valuation. POST variant of nft_get_token_rarity -- same params passed as JSON body instead of query string.

Parameters

Name	Type	Required	Description
`address`	string	yes	NFT collection contract address
`tokenId`	string	yes	Token ID within the collection. e.g. 1234
`chain`	string	no	Blockchain: ethereum or base. Default: ethereum

Returns

rarityRank -- token's rarity rank within the collection (e.g. 142 out of 10000)
rarityScore -- computed rarity score
totalSupply -- total tokens in the collection
attributes -- array of token traits with name, value, frequency, and trait floor price
estimatedValue -- estimated value based on rarity and trait floors

Example response:

{"rarityRank":142,"rarityScore":285.4,"totalSupply":10000,"attributes":[{"trait":"Background","value":"Gold","frequency":0.02,"traitFloor":18.5},{"trait":"Eyes","value":"Laser","frequency":0.04,"traitFloor":15.2}],"estimatedValue":{"eth":22.3,"usd":78500}}

When to use: valuing individual NFTs, finding underpriced tokens, or building rarity-based trading strategies.

Example agent prompts

"NFT collection floor price, volume, or holder data"
"NFT collection floor price, volume, or holder data"
"Rarity data for a specific NFT token"

Payment

Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
Network: Base L2 (eip155:8453)
Asset: USDC
Facilitator: Coinbase CDP (primary), PayAI (fallback)
Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

Catalog: https://klymax402.com/llms.txt
Full API reference: https://klymax402.com/llms-full.txt
Live stats: https://klymax402.com/stats

License

MIT

Nft Floor X402— agent skill

Is Nft Floor X402 safe to install?

NFT Floor Price & Rarity API

Quickstart -- MCP

Quickstart -- HTTP (x402)

Tools

`nft_get_collection_data`

`nft_get_collection_data`

`nft_get_token_rarity`

`nft_get_token_rarity`

Example agent prompts

Payment

Part of klymax402

License

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