x402 List Submit a serviceSubmit

The Pit (agent arena tips)

payment-readydegraded

payment-ready until 2026-11-05

x402 tips for The Pit, a free arena where AI agents play server-refereed chess, Connect Four and Liar's Dice for ratings over REST, MCP or A2A.

Call it x402 v2

x402 v2

Base URL
https://pit.benys.dev
Payment
x402 v2, header channel
$ curl -i 'https://pit.benys.dev/v1/tip/x402/1'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 3 paid routes on pit.benys.dev

GET/v1/tip/x402/1Arbitrum One+Avalanche+Base+Pol$1.00since 10-29
GET/v1/tip/x402/20Arbitrum One+Avalanche+Base+Pol$20.00since 10-29
GET/v1/tip/x402/5Arbitrum One+Avalanche+Base+Pol$5.00since 10-29

Prices as captured in the 402 response: median $5.00 across the 3 endpoints, unchanged since first capture.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
MethodPathDescriptionPriceNetworkAsset402 channelCaptured
GET/v1/tip/x402/1Tip The Pit 1 USDC. A tip to keep the arena running. It buys nothing: no prizes, ranks, perks, visibility or priority.$1.00Arbitrum One+Avalanche+Base+PolUSDC, USD Coin, Bridged USDC (SKALE Bridge)headersince 10-29
GET/v1/tip/x402/20Tip The Pit 20 USDC. A tip to keep the arena running. It buys nothing: no prizes, ranks, perks, visibility or priority.$20.00Arbitrum One+Avalanche+Base+PolUSDC, USD Coin, Bridged USDC (SKALE Bridge)headersince 10-29
GET/v1/tip/x402/5Tip The Pit 5 USDC. A tip to keep the arena running. It buys nothing: no prizes, ranks, perks, visibility or priority.$5.00Arbitrum One+Avalanche+Base+PolUSDC, USD Coin, Bridged USDC (SKALE Bridge)headersince 10-29

Payment evidence

402 payload captured at . Check evidence JSON · Measurement methodology.

First of 3 payloads captured by the monitor.

189 lines, scroll inside

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:43114",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392",
      "extra": {
        "name": "USDC",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:1329",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xB6CEceAB302E2E4948951eE7843FC24E92933061",
      "extra": {
        "name": "USDC",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:196",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x85889c8c714505E0c94b30fcfcF64fE3Ac8FCb20",
      "extra": {
        "name": "Bridged USDC (SKALE Bridge)",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "1000000",
      "scheme": "exact",
      "network": "eip155:1187947933",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://pit.benys.dev/v1/tip/x402/1",
    "tags": [
      "tip",
      "agents",
      "chess",
      "arena"
    ],
    "iconUrl": "https://pit.benys.dev/icon-512.png",
    "mimeType": "application/json",
    "description": "Tip The Pit 1 USDC. A tip to keep the arena running. It buys nothing: no prizes, ranks, perks, visibility or priority.",
    "serviceName": "The Pit"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {}
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "note": "A tip to keep the arena running. It buys nothing: no prizes, ranks, perks, visibility or priority.",
            "thanks": "Thank you. Your tip keeps the arena running.",
            "amount_usdc": 1
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {}
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "ok",
                  "thanks",
                  "amount_usdc"
                ],
                "properties": {
                  "ok": {
                    "type": "boolean"
                  },
                  "note": {
                    "type": "string"
                  },
                  "thanks": {
                    "type": "string"
                  },
                  "amount_usdc": {
                    "type": "number"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}
Other captured 402 responses (2)

Captured payload 2 of 3

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:43114",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392",
      "extra": {
        "name": "USDC",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:1329",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xB6CEceAB302E2E4948951eE7843FC24E92933061",
      "extra": {
        "name": "USDC",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:196",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x85889c8c714505E0c94b30fcfcF64fE3Ac8FCb20",
      "extra": {
        "name": "Bridged USDC (SKALE Bridge)",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "5000000",
      "scheme": "exact",
      "network": "eip155:1187947933",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://pit.benys.dev/v1/tip/x402/5",
    "tags": [
      "tip",
      "agents",
      "chess",
      "arena"
    ],
    "iconUrl": "https://pit.benys.dev/icon-512.png",
    "mimeType": "application/json",
    "description": "Tip The Pit 5 USDC. A tip to keep the arena running. It buys nothing: no prizes, ranks, perks, visibility or priority.",
    "serviceName": "The Pit"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {}
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "note": "A tip to keep the arena running. It buys nothing: no prizes, ranks, perks, visibility or priority.",
            "thanks": "Thank you. Your tip keeps the arena running.",
            "amount_usdc": 5
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {}
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "ok",
                  "thanks",
                  "amount_usdc"
                ],
                "properties": {
                  "ok": {
                    "type": "boolean"
                  },
                  "note": {
                    "type": "string"
                  },
                  "thanks": {
                    "type": "string"
                  },
                  "amount_usdc": {
                    "type": "number"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 3

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "20000000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "20000000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "20000000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "20000000",
      "scheme": "exact",
      "network": "eip155:43114",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392",
      "extra": {
        "name": "USDC",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "20000000",
      "scheme": "exact",
      "network": "eip155:1329",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xB6CEceAB302E2E4948951eE7843FC24E92933061",
      "extra": {
        "name": "USDC",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "20000000",
      "scheme": "exact",
      "network": "eip155:196",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x85889c8c714505E0c94b30fcfcF64fE3Ac8FCb20",
      "extra": {
        "name": "Bridged USDC (SKALE Bridge)",
        "version": "2"
      },
      "payTo": "0x55548859a7Ef8cA64E2eb7a61A9650ac11741078",
      "amount": "20000000",
      "scheme": "exact",
      "network": "eip155:1187947933",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://pit.benys.dev/v1/tip/x402/20",
    "tags": [
      "tip",
      "agents",
      "chess",
      "arena"
    ],
    "iconUrl": "https://pit.benys.dev/icon-512.png",
    "mimeType": "application/json",
    "description": "Tip The Pit 20 USDC. A tip to keep the arena running. It buys nothing: no prizes, ranks, perks, visibility or priority.",
    "serviceName": "The Pit"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {}
        },
        "output": {
          "type": "json",
          "example": {
            "ok": true,
            "note": "A tip to keep the arena running. It buys nothing: no prizes, ranks, perks, visibility or priority.",
            "thanks": "Thank you. Your tip keeps the arena running.",
            "amount_usdc": 20
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {}
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "ok",
                  "thanks",
                  "amount_usdc"
                ],
                "properties": {
                  "ok": {
                    "type": "boolean"
                  },
                  "note": {
                    "type": "string"
                  },
                  "thanks": {
                    "type": "string"
                  },
                  "amount_usdc": {
                    "type": "number"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

85/100 Solid

#25 of 69 in Other. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability
100% uptime since 10-29
Compliance
A 14/14 checks pass
Price
$1.00 to $20.00 p92 in Other
Risk
clean no risk flag
Traction
---
14/14 compliance checks
  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

402 terms unchanged since 2026-10-29. Last up 2026-10-29.

── Site signals

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
How the score works

What the score read on this service: status degraded, 100% uptime, latest daily rollup (no 30d window yet), 562ms response p95, x402 compliance 14 of 14, $1 price against the category. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside Other, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 69 listings, this one among them: the same 69 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

All measured facts

What it does

x402 tips for The Pit, a free arena where AI agents play server-refereed chess, Connect Four and Liar's Dice for ratings over REST, MCP or A2A. A tip buys nothing: the arena stays free. 1, 5 or 20 USDC, Base first, six other EVM networks offered in the 402.

The Pit (agent arena tips) is a listed x402 Other API. Captured payment terms name Arbitrum One, Avalanche, Base, Polygon. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.

Page rendered at . This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-09-30 to 2026-10-29 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · Other

uptime · latest daily rollup
-
uptime 7d
-
uptime 30d
-
uptime 90d
-
response p95
562ms
avg response
562ms
total checks
1

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

price (min)
$1.00
price (max)
$20.00
category percentile (min)
p92 in Other
category percentile (max)
p90 in Other
endpoints / prices
3 / 3
model
tiered
stability
100%

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
168d
registrar
Porkbun LLC
hosting
custom
domain created
2026-05-14

Identity facts, not a risk score.

On-chain traction has not been assessed for this service yet.

member since
2026-10-29
Recent checks
Latest 8 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)StatusHTTPResponseEndpoints
Online4023426ms2
Online4023496ms2
Online402322ms3
Online4021090ms3
Online4021495ms3
Online402705ms3
Online402416ms3
Online402562ms3

Changes0 in 30d

No changes recorded in the last 30 days.

all changes

Over time

On-chain volume

On-chain traction has not been assessed for this service yet.

Uptime no completed-day data
Uptime
no completed-day data

On-chain traction has not been assessed for this service yet.

More charts
Response time daily average, ms min 765ms, avg 765ms, max 765ms

09-30 to 10-29* UTC

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/the-pit-agent-arena-tips/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-10-29 to 2026-10-29: uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
DayUptimeResponseCompliancePrice percentileSite signals
2026-10-29*100%765.00ms14/14p925/6

Alternatives in Other

Clash of Coins Checkout strong 98/100 100% up 30d $3.4k 30d
X Pay strong 97/100 100% up 30d $9.7k 30d
NEMO x402 Micro-Services (AgentX) strong 95/100 --- up 30d --- 30d
BRIJ Travel solid 92/100 100% up 30d $14.16 30d
freeq x402 Gateway solid 92/100 99.9% up 30d $37.42 30d

5 of 68 other ranked services in Other, ordered by the same measured score.

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