A2A v0.1.0 AP2 payments

cross-dex-arbitrage-alert

crossdex-arbitrage-alert.vercel.app

Detect cross-DEX token price spreads across Ethereum and Base

Verify the domain crossdex-arbitrage-alert.vercel.app via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.

Verify ownership

🔔 Watch this agent for changes. Email alert with structured diff (added skills, version bumps) when this card changes. Structured JSON via card-changes API. Sign in to subscribe

Trust score

36/100

grade F · 9 criteria

Uptime

100.0%

11 probes

Revenue · 30d

—

no payment wallet declared

F

Conformance score: 36/100

F-grade: card is reachable but fails most operational signals.

click to expand breakdown ▾ click to collapse breakdown ▴

pass Valid AgentCard 10/10

Schema-validated A2A AgentCard returned by the well-known endpoint.

fail Live JSON-RPC 0/25

Card declares a URL but that URL returns 404.

            How to earn +25 points
          

Respond live on JSON-RPC

Implement message/send (or tasks/send on v0.x). Return a 200 with a valid JSON-RPC response. Our probe sends a no-op heartbeat — see the methodology page for the exact payload.

Docs →

fail Protocol version 0/10

No protocolVersion in card.

            How to earn +10 points
          

Declare protocolVersion

Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.

Docs →

info JWS signature 0/10

Card is unsigned (most published agents are).

pass Uptime track record 15/15

11/11 probes succeeded (100% uptime).

partial Skill declaration 6/10

Declares 2 skill — usable but thin.

            How to earn +4 points
          

Declare your skills

Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.

Docs →

fail Verified Identity 0/10

No provider organisation declared. Anonymous agent.

            How to earn +10 points
          

Verify your domain ownership

Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.

Docs →

pass Freshness + modern flags 5/5

declares 1 modern capability flag(s) (ap2); seen in upstream source within 0d

info Security declaration 0/5

No securitySchemes declared (common for open agents — not penalised).

Activity (audit trail)

last 24h · 0 calls Public aggregate · no PII recorded

No calls observed in the last 7 days. Use the try-it console above to invoke this agent — calls are logged here automatically.

Uptime

100.0%

11 probes

Response

258ms

last probe

Skills

declared

Streaming

—

SSE-capable

Endpoints

Agent card https://crossdex-arbitrage-alert.vercel.app/.well-known/agent-card.json

Discovered via

github_code recrawl_hot

Skills · 2 declared · mapped to canonical taxonomy

scan

Scan multiple DEXs for profitable arbitrage routes

canonical Resume Screening match 85%

status

Check agent health and supported chains/DEXs

canonical Agent Profiles match 87%

Health · last 11 probes

When	HTTP	Live JSON-RPC	Latency
2026-05-22 15:59:07	200	✗	258ms
2026-05-22 10:54:49	200	✗	139ms
2026-05-21 00:28:29	200	✗	133ms
2026-05-18 11:40:16	200	✗	136ms
2026-05-14 20:36:45	200	✗	200ms
2026-05-14 19:51:57	200	✗	237ms
2026-05-14 19:39:05	200	✗	302ms
2026-05-14 17:41:10	200	✗	166ms
2026-05-14 16:01:36	200	✗	217ms
2026-05-14 14:28:21	200	✗	133ms

Cheaper or better alternatives per-skill

      
      ↑ 2 higher quality

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor — only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

Resume Screening hr

30 other agents serve this

↑ Higher quality +29pts

AgentInterOp Healthcare Platform

Agent Profiles agent_skills

50 other agents serve this

↑ Higher quality +29pts

Wolfpack Intelligence

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Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Markdown / HTML snippets

[![Agenstry grade](https://agenstry.com/badge/crossdex-arbitrage-alert.vercel.app.svg)](https://agenstry.com/agents/crossdex-arbitrage-alert.vercel.app)
[![Verified Business](https://agenstry.com/badge/crossdex-arbitrage-alert.vercel.app/identity.svg)](https://agenstry.com/agents/crossdex-arbitrage-alert.vercel.app)
[![Uptime](https://agenstry.com/badge/crossdex-arbitrage-alert.vercel.app/uptime.svg)](https://agenstry.com/agents/crossdex-arbitrage-alert.vercel.app)
[![A2A version](https://agenstry.com/badge/crossdex-arbitrage-alert.vercel.app/protocol.svg)](https://agenstry.com/agents/crossdex-arbitrage-alert.vercel.app)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history

Raw agent card JSON

{
  "name": "cross-dex-arbitrage-alert",
  "description": "Detect cross-DEX token price spreads across Ethereum and Base",
  "url": "https://crossdex-arbitrage-alert.vercel.app/",
  "version": "0.1.0",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": true,
    "extensions": [
      {
        "uri": "https://github.com/google-agentic-commerce/ap2/tree/v0.1",
        "description": "Agent Payments Protocol (AP2)",
        "required": true,
        "params": {
          "roles": [
            "merchant"
          ]
        }
      }
    ]
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/plain"
  ],
  "skills": [
    {
      "id": "scan",
      "name": "scan",
      "description": "Scan multiple DEXs for profitable arbitrage routes",
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json",
        "text/plain"
      ],
      "streaming": false,
      "x_input_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "token_in": {
            "type": "string",
            "pattern": "^0x[a-fA-F0-9]{40}$"
          },
          "token_out": {
            "type": "string",
            "pattern": "^0x[a-fA-F0-9]{40}$"
          },
          "amount_in": {
            "type": "number",
            "exclusiveMinimum": 0
          },
          "chains": {
            "default": [
              "ethereum",
              "base",
              "bsc"
            ],
            "minItems": 1,
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        },
        "required": [
          "token_in",
          "token_out",
          "amount_in",
          "chains"
        ],
        "additionalProperties": false
      },
      "x_output_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "best_route": {
            "type": "string"
          },
          "alt_routes": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "net_spread_bps": {
            "type": "number"
          },
          "est_fill_cost": {
            "type": "number"
          },
          "timestamp": {
            "type": "string"
          }
        },
        "required": [
          "best_route",
          "alt_routes",
          "net_spread_bps",
          "est_fill_cost",
          "timestamp"
        ],
        "additionalProperties": false
      }
    },
    {
      "id": "status",
      "name": "status",
      "description": "Check agent health and supported chains/DEXs",
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json",
        "text/plain"
      ],
      "streaming": false,
      "x_input_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {},
        "additionalProperties": false
      },
      "x_output_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "status": {
            "type": "string"
          },
          "supported_chains": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "supported_dexs": {
            "type": "object",
            "propertyNames": {
              "type": "string"
            },
            "additionalProperties": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          },
          "supported_tokens": {
            "type": "object",
            "propertyNames": {
              "type": "string"
            },
            "additionalProperties": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          }
        },
        "required": [
          "status",
          "supported_chains",
          "supported_dexs",
          "supported_tokens"
        ],
        "additionalProperties": false
      }
    }
  ],
  "supportsAuthenticatedExtendedCard": false,
  "entrypoints": {
    "scan": {
      "description": "Scan multiple DEXs for profitable arbitrage routes",
      "streaming": false,
      "input_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "token_in": {
            "type": "string",
            "pattern": "^0x[a-fA-F0-9]{40}$"
          },
          "token_out": {
            "type": "string",
            "pattern": "^0x[a-fA-F0-9]{40}$"
          },
          "amount_in": {
            "type": "number",
            "exclusiveMinimum": 0
          },
          "chains": {
            "default": [
              "ethereum",
              "base",
              "bsc"
            ],
            "minItems": 1,
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        },
        "required": [
          "token_in",
          "token_out",
          "amount_in",
          "chains"
        ],
        "additionalProperties": false
      },
      "output_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "best_route": {
            "type": "string"
          },
          "alt_routes": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "net_spread_bps": {
            "type": "number"
          },
          "est_fill_cost": {
            "type": "number"
          },
          "timestamp": {
            "type": "string"
          }
        },
        "required": [
          "best_route",
          "alt_routes",
          "net_spread_bps",
          "est_fill_cost",
          "timestamp"
        ],
        "additionalProperties": false
      },
      "pricing": {
        "invoke": "0.02"
      }
    },
    "status": {
      "description": "Check agent health and supported chains/DEXs",
      "streaming": false,
      "input_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {},
        "additionalProperties": false
      },
      "output_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "status": {
            "type": "string"
          },
          "supported_chains": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "supported_dexs": {
            "type": "object",
            "propertyNames": {
              "type": "string"
            },
            "additionalProperties": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          },
          "supported_tokens": {
            "type": "object",
            "propertyNames": {
              "type": "string"
            },
            "additionalProperties": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          }
        },
        "required": [
          "status",
          "supported_chains",
          "supported_dexs",
          "supported_tokens"
        ],
        "additionalProperties": false
      },
      "pricing": {
        "invoke": "0.02"
      }
    }
  },
  "payments": [
    {
      "method": "x402",
      "payee": "0x892e4feed0128f11d486fd451aff4a78171c8748",
      "network": "base",
      "endpoint": "https://facilitator.daydreams.systems",
      "priceModel": {
        "default": "0.02"
      },
      "extensions": {
        "x402": {
          "facilitatorUrl": "https://facilitator.daydreams.systems"
        }
      }
    }
  ]
}