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📊 Intel view 📋 Audit JSON 🔄 Changelog
71
A2A v0.1.0 AP2 payments

slippage-sentinel

slippage-sentinel.vercel.app

Estimate safe slippage tolerance for any route

🛡
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Verify the domain slippage-sentinel.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.
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🔔 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%
15 probes
Revenue · 30d
—
no payment wallet declared
Usage · 7d
0
no recent activity
Card drift · 7d
stable
0 snapshots tracked
Owner
unverified
claim this listing →
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
15/15 probes succeeded (100% uptime).
partial Skill declaration 6/10
Declares 1 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%
15 probes
Response
132ms
last probe
Skills
1
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://slippage-sentinel.vercel.app/.well-known/agent-card.json
Discovered via
github_code recrawl_hot

Skills · 1 declared · mapped to canonical taxonomy

getSafeSlippage

Estimate safe slippage tolerance for a given swap route

canonical Agent Profiles match 84%

Health · last 15 probes

When HTTP Live JSON-RPC Latency
2026-05-22 23:38:55 200 ✗ 132ms
2026-05-22 12:26:54 200 ✗ 123ms
2026-05-21 02:52:39 200 ✗ 131ms
2026-05-19 00:59:52 200 ✗ 225ms
2026-05-18 15:36:10 200 ✗ 284ms
2026-05-18 11:40:06 200 ✗ 134ms
2026-05-14 20:35:13 200 ✗ 2297ms
2026-05-14 20:16:03 200 ✗ 247ms
2026-05-14 19:49:37 200 ✗ 185ms
2026-05-14 19:39:06 200 ✗ 148ms

Cheaper or better alternatives per-skill

↑ 1 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.

Agent Profiles agent_skills
50 other agents serve this

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Embed your Agenstry badge

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

Agenstry grade Uptime
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/slippage-sentinel.vercel.app.svg)](https://agenstry.com/agents/slippage-sentinel.vercel.app)
[![Verified Business](https://agenstry.com/badge/slippage-sentinel.vercel.app/identity.svg)](https://agenstry.com/agents/slippage-sentinel.vercel.app)
[![Uptime](https://agenstry.com/badge/slippage-sentinel.vercel.app/uptime.svg)](https://agenstry.com/agents/slippage-sentinel.vercel.app)
[![A2A version](https://agenstry.com/badge/slippage-sentinel.vercel.app/protocol.svg)](https://agenstry.com/agents/slippage-sentinel.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": "slippage-sentinel",
  "description": "Estimate safe slippage tolerance for any route",
  "url": "https://slippage-sentinel.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": "getSafeSlippage",
      "name": "getSafeSlippage",
      "description": "Estimate safe slippage tolerance for a given swap route",
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json",
        "text/plain"
      ],
      "streaming": false,
      "x_input_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "token_in": {
            "type": "string",
            "minLength": 1
          },
          "token_out": {
            "type": "string",
            "minLength": 1
          },
          "amount_in": {
            "type": "number",
            "exclusiveMinimum": 0
          },
          "route_hint": {
            "type": "string"
          }
        },
        "required": [
          "token_in",
          "token_out",
          "amount_in"
        ],
        "additionalProperties": false
      },
      "x_output_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "min_safe_slip_bps": {
            "type": "number"
          },
          "pool_depths": {
            "type": "number"
          },
          "recent_trade_size_p95": {
            "type": "number"
          },
          "volatility_index": {
            "type": "number"
          },
          "error": {
            "type": "string"
          }
        },
        "additionalProperties": false
      }
    }
  ],
  "supportsAuthenticatedExtendedCard": false,
  "entrypoints": {
    "getSafeSlippage": {
      "description": "Estimate safe slippage tolerance for a given swap route",
      "streaming": false,
      "input_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "token_in": {
            "type": "string",
            "minLength": 1
          },
          "token_out": {
            "type": "string",
            "minLength": 1
          },
          "amount_in": {
            "type": "number",
            "exclusiveMinimum": 0
          },
          "route_hint": {
            "type": "string"
          }
        },
        "required": [
          "token_in",
          "token_out",
          "amount_in"
        ],
        "additionalProperties": false
      },
      "output_schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "type": "object",
        "properties": {
          "min_safe_slip_bps": {
            "type": "number"
          },
          "pool_depths": {
            "type": "number"
          },
          "recent_trade_size_p95": {
            "type": "number"
          },
          "volatility_index": {
            "type": "number"
          },
          "error": {
            "type": "string"
          }
        },
        "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"
        }
      }
    }
  ]
}