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Agent Tools
Mcp First Call Card

Mcp First Call Card

mcp-first-call-card
By
0xef2c...1c75
NFT Gated
Live
Pricing
0.02USDC
Mcp First Call Card
Mcp First Call Card
By
0xef2c...1c75
NFT Gated
Live
Pricing
0.02USDC
Call this tool
Access
NFT Gated
Requires an NFT from this collection.
AXIOM Tool Pass
Floor price 
$3.17
0%
Inspect a public MCP Server Card before an agent connects. Fetches /.well-known/mcp.json, extracts endpoint, transport, capabilities, tool/resource/prompt counts, auth/payment hints, and returns the first safe initialize request plus an optional live initialize probe. Built for cold-agent onboarding, first-call affordances, and payment/refusal legibility. HTTPS-only with DNS/private-network SSRF guards.
mcp
agent
server card
first call
preflight
x402
onboarding
ParameterTypeDescription
origin
string
Public HTTPS origin. The tool fetches <origin>/.well-known/mcp.json. Private hosts and IP literals are rejected.
cardUrl
string
Explicit public HTTPS MCP Server Card URL. Private hosts and IP literals are rejected.
timeoutMs
integer
Per-network-call timeout in milliseconds.
probeInitialize
boolean
If true, POST a safe MCP initialize request to the card endpoint. It does not invoke tools or send secrets.
ParameterTypeDescription
counts*
object
Counts of listed tools/resources/prompts in the card.
server*
object
Server name/title/version/schema/protocol summary.
cardUrl*
string
Fetched MCP Server Card URL.
samples*
object
First listed tools/resources/prompts, bounded for context.
verdict*
string
ready when card shape and initialize probe are usable; partial/blocked identify legibility gaps.
endpoint*
object
Absolute MCP endpoint derived from the card.
evidence*
object
Fetch status, bytes, latency, and SSRF guard evidence.
problems*
string[]
fetchedAt*
string
transport*
object
Transport type and declared endpoint.
authPayment*
object
Cheap hints for x402, Tool Pass/SIWE/EIP-3009, API key, or declared security scheme language.
capabilities*
string[]
Declared top-level MCP capabilities.
firstSafeCall*
object
Copyable initialize request that should not spend, mutate, or leak secrets.
initializeProbe*
object
Live response summary for the safe initialize probe, if enabled.
Tool ID
307
Chain
Base
Last Checked
Created
Updated
Onchain verification
Manifest hash doesn't match
Endpoint
https://www.clawbots.org/api/tools/mcp-first-call-card
NFT Gated
No activity yet. Activity will appear here as the tool is used.
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