Applications, APIs & agent tools
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Listing ID: x402:ef2d18296b0bdac64378542cd5ff7c4d8929439156f114c272d0a6ecdeb11229
Bulk x402 dup-guard: an array of up to 50 guard requests, each returning its derived key and allow/reject/replay-cache decision, with an aggrega…
Listing ID: x402:f0130407047af4970f34ea57f725da78d8d54fba4031584c886c1775ca3c707a
MCP tool-surface drift check: compare a pinned baseline (tool fingerprints) against the live surface (JSON-RPC tools/list, SSE-aware, well-known…
Listing ID: x402:f0761ea46ba3febe5ce3503e4b170632d1fbed021f4905b326fea2e906f58f8e
DDG agent-payable service request
Description incompleteListing ID: x402:f09533f3c7ea311080f0da91740eebea5f8816c3cbb156e7c8061188c8063fc4
One gate-verified keyless read op on one chain (ethereum, base, polygon, arbitrum, optimism, avalanche, bnb, unichain). Read-only method allowli…
Listing ID: x402:f1058066230ed7b773fd6d7fbbedf613da08e8baf212a7e20243393e536e7516
DDG agent-payable service request
Description incompleteListing ID: x402:f298dd67ad50ba37e337f5123710df18c0f10aec741fb75f2c179c8ce5fcb7e4
DDG agent-payable service request
Description incompleteListing ID: x402:f3be60d2b7d9d9698e6436abcfb7b1353452eb0674e6d94ff7f1c96e2588ca16
DDG agent-payable service request
Description incompleteListing ID: x402:f4ed32ca0118fbfe14981975218e802557682cdaeb0a0a19b2f030b1be1fb280
Verify an A2A agent card before trusting or routing to it: dual-probe /.well-known/agent-card.json and agent.json, check MUST fields (name/descr…
Listing ID: x402:f534fdce33e4d513c03f13e7d41f64f7557fbb63dafee522847b32c346604820
DDG agent-payable service request
Description incompleteListing ID: x402:f619c1b5f48a33d68222899c69279be561ffc55190dd8ad51989112958df03ca
ERC-20 balanceOf + metadata (symbol/decimals/name) on any supported chain, gate-verified eth_call, exact formatted amount.
Listing ID: x402:f6dff01619bdd77f4640d337d4a62a370d1d7cb30225599d19e881c0e4cfa81e
DDG agent-payable service request
Description incompleteListing ID: x402:f7aa4cbbbe6b85949f66cecc46e602fec1db2002f625432b38e70d50471dcf7d
DDG agent-payable service request
Description incompleteOne product card can include several interfaces. Imported listings keep their source IDs; similar titles may describe different tools. Imported categories and prices are not independently verified. About the catalogue