x402 List

x402 Protocol Service Directory

●

Gondola

AI PAYMENT-READY

payment-ready until 2026-09-18

Pay-per-request LLM inference over x402. 263 models on Venice AI supply, including uncensored lines. OpenAI-compatible chat and images plus Anthropic messages. Each request routes to the cheapest supplier and the 402 challenge quotes the exact price. Overpayment banks as reusable credit for the paying wallet.

Pay from $0.01 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

measured since 2026-07-27 (start of our harvest window) · $2.04 all-time · settled via coinbase

BASE URL https://api.gondola-ai.com │ WEBSITE https://gondola-ai.com │ ENDPOINTS 3 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-08-12 │ MONITORED SINCE 2026-08-12

VERDICT

ranking generation 3

solid 85/100 #32 of 116 in AI by measured score

What the score read on this service: status online, 100% uptime 30d, 659ms response p95, x402 compliance 14 of 14, $0.01 price against the category, on-chain traction measured. 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.

It is a score inside AI, 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 116 listings, this one among them. That set is wider than the 116 the position above is counted against, 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.

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.

ALTERNATIVES IN AI

Other AI services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE BAND SCORE UPTIME 30D VOL 30D
Otto AI strong 95 100% $48.66
x402engine solid 93 100% $17.68
Agent402.tools solid 92 98.8% $123.43
vaaya solid 90 100% $33.30
StableEmail solid 90 100% $34.35
5 of 115 other ranked services in AI · see the whole category

ASSESSMENT

updated 2h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 100%
uptime 24h
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
659ms
avg response
434ms
total checks
2,700

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

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.01 (p46 in AI)
price (min)
$0.01
category percentile (min)
p46 in AI
endpoints / prices
3 / 1
model
flat
stability
100%
risk clean

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
77d
registrar
EuroDNS S.A.
hosting
custom
domain created
2026-06-24

Identity facts, not a risk score.

traction $0.03 30d · 1 buyers · top buyer 100%
volume 30d
$0.03
buyers 30d
1
settlements 30d
3
measured since
2026-07-27 (start of our harvest window)
last settlement
2026-09-01
top buyer share
100% of 30d volume
trend 7d vs 30d
0.00x the 30d daily rate
networks
eip155:8453
volume all-time
$2.04
settlements all-time
6
median settlement 30d
$0.01
max settlement 30d
$0.01
settled via
coinbase ($0.03, 3 tx)

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
POST /v1/chat/completions OpenAI-compatible chat completions across the Venice AI model catalog. Pay per request in USDC on Base via x402, with no account and no API key. Overpayment is never lost: it banks as reusable wallet credit for your next call. Model ids and live prices: GET https://api.gondola-ai.com/v1/models. $0.01 Base USDC header
POST /v1/images/generations OpenAI-compatible image generation across the Venice AI model catalog. Pay per request in USDC on Base via x402, with no account and no API key. Overpayment is never lost: it banks as reusable wallet credit for your next call. Model ids and live prices: GET https://api.gondola-ai.com/v1/models. $0.01 Base USDC header
POST /v1/messages Anthropic Messages compatible completions across the Venice AI model catalog. Pay per request in USDC on Base via x402, with no account and no API key. Overpayment is never lost: it banks as reusable wallet credit for your next call. Model ids and live prices: GET https://api.gondola-ai.com/v1/models. $0.01 Base USDC header
3 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /v1/chat/completions returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i -X POST 'https://api.gondola-ai.com/v1/chat/completions'
// 402 response (captured by monitor) · 3 payloads · click to expand 
[
  {
    "error": "X-PAYMENT header is required. This endpoint is pay-per-request (x402, USDC on Base). POST a JSON body with a model to be quoted for your own request.",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x98886846918c7deBe86E1D74E249DCDd64a9D367",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://api.gondola-ai.com/v1/chat/completions",
      "mimeType": "application/json",
      "description": "OpenAI-compatible chat completions across the Venice AI model catalog. Pay per request in USDC on Base via x402, with no account and no API key. Overpayment is never lost: it banks as reusable wallet credit for your next call. Model ids and live prices: GET https://api.gondola-ai.com/v1/models."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "model": {
                "type": "string",
                "required": true,
                "description": "Model id to run, e.g. from GET /v1/models. Official provider spellings also resolve."
              },
              "stream": {
                "type": "boolean",
                "required": false,
                "description": "Set true for a server-sent-events stream of the completion."
              },
              "messages": {
                "type": "array",
                "required": true,
                "description": "OpenAI chat messages, each { role, content }."
              },
              "max_tokens": {
                "type": "number",
                "required": false,
                "description": "Upper bound on generated tokens. Also bounds what the request can cost."
              },
              "temperature": {
                "type": "number",
                "required": false,
                "description": "Sampling temperature. Costs nothing extra; clamped to the model's range."
              }
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "properties": {
              "id": {
                "type": "string"
              },
              "model": {
                "type": "string"
              },
              "usage": {
                "type": "object"
              },
              "object": {
                "type": "string"
              },
              "choices": {
                "type": "array"
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object"
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "properties": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "X-PAYMENT header is required. This endpoint is pay-per-request (x402, USDC on Base). POST a JSON body with a model to be quoted for your own request.",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x98886846918c7deBe86E1D74E249DCDd64a9D367",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://api.gondola-ai.com/v1/images/generations",
      "mimeType": "application/json",
      "description": "OpenAI-compatible image generation across the Venice AI model catalog. Pay per request in USDC on Base via x402, with no account and no API key. Overpayment is never lost: it banks as reusable wallet credit for your next call. Model ids and live prices: GET https://api.gondola-ai.com/v1/models."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "n": {
                "type": "number",
                "required": false,
                "description": "How many images to generate, 1 to 4. Each one is priced and billed."
              },
              "size": {
                "type": "string",
                "required": false,
                "description": "Requested size, e.g. \"1024x1024\". Resolved to the nearest tier the model prices."
              },
              "model": {
                "type": "string",
                "required": true,
                "description": "Image model id, e.g. from GET /v1/models."
              },
              "format": {
                "type": "string",
                "required": false,
                "description": "Output image format, \"png\" or \"webp\"."
              },
              "prompt": {
                "type": "string",
                "required": true,
                "description": "Text prompt describing the image to generate."
              }
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "properties": {
              "data": {
                "type": "array"
              },
              "created": {
                "type": "number"
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object"
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "properties": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "X-PAYMENT header is required. This endpoint is pay-per-request (x402, USDC on Base). POST a JSON body with a model to be quoted for your own request.",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x98886846918c7deBe86E1D74E249DCDd64a9D367",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 120
      }
    ],
    "resource": {
      "url": "https://api.gondola-ai.com/v1/messages",
      "mimeType": "application/json",
      "description": "Anthropic Messages compatible completions across the Venice AI model catalog. Pay per request in USDC on Base via x402, with no account and no API key. Overpayment is never lost: it banks as reusable wallet credit for your next call. Model ids and live prices: GET https://api.gondola-ai.com/v1/models."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "model": {
                "type": "string",
                "required": true,
                "description": "Model id to run, e.g. from GET /v1/models. Claude spellings also resolve."
              },
              "stream": {
                "type": "boolean",
                "required": false,
                "description": "Set true for a server-sent-events stream of Anthropic message events."
              },
              "system": {
                "type": "string",
                "required": false,
                "description": "Optional system prompt, as a string or content blocks."
              },
              "messages": {
                "type": "array",
                "required": true,
                "description": "Anthropic messages, each { role, content }."
              },
              "max_tokens": {
                "type": "number",
                "required": true,
                "description": "Required by the Anthropic contract. Upper bound on generated tokens."
              }
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "properties": {
              "id": {
                "type": "string"
              },
              "role": {
                "type": "string"
              },
              "type": {
                "type": "string"
              },
              "model": {
                "type": "string"
              },
              "usage": {
                "type": "object"
              },
              "content": {
                "type": "array"
              },
              "stop_reason": {
                "type": "string"
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object"
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                }
              }
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "properties": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/gondola/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
08-13 · uptime 100.0% · 360ms avg08-14 · uptime 100.0% · 370ms avg08-15 · uptime 100.0% · 367ms avg08-16 · uptime 100.0% · 427ms avg08-17 · uptime 100.0% · 364ms avg08-18 · uptime 100.0% · 362ms avg08-19 · uptime 100.0% · 385ms avg08-20 · uptime 100.0% · 379ms avg08-21 · uptime 100.0% · 320ms avg08-22 · uptime 100.0% · 342ms avg08-23 · uptime 100.0% · 320ms avg08-24 · uptime 100.0% · 441ms avg08-25 · uptime 100.0% · 600ms avg08-26 · uptime 100.0% · 488ms avg08-27 · uptime 100.0% · 610ms avg08-28 · uptime 100.0% · 557ms avg08-29 · uptime 100.0% · 558ms avg08-30 · uptime 100.0% · 555ms avg08-31 · uptime 98.9% · 467ms avg09-01 · uptime 100.0% · 471ms avg09-02 · uptime 100.0% · 525ms avg09-03 · uptime 100.0% · 417ms avg09-04 · uptime 100.0% · 534ms avg09-05 · uptime 100.0% · 395ms avg09-06 · uptime 100.0% · 440ms avg09-07 · uptime 100.0% · 373ms avg09-08 · uptime 100.0% · 409ms avg09-09 · uptime 100.0% · 389ms avg09-10 · uptime 100.0% · 382ms avg09-11 · uptime 100.0% · 424ms avg08-1309-11
30d UPTIME 100%
RESPONSE TIME
08-13 · 360ms avg08-13 · 360ms avg08-14 · 370ms avg08-14 · 370ms avg08-15 · 367ms avg08-15 · 367ms avg08-16 · 427ms avg08-16 · 427ms avg08-17 · 364ms avg08-17 · 364ms avg08-18 · 362ms avg08-18 · 362ms avg08-19 · 385ms avg08-19 · 385ms avg08-20 · 379ms avg08-20 · 379ms avg08-21 · 320ms avg08-21 · 320ms avg08-22 · 342ms avg08-22 · 342ms avg08-23 · 320ms avg08-23 · 320ms avg08-24 · 441ms avg08-24 · 441ms avg08-25 · 600ms avg08-25 · 600ms avg08-26 · 488ms avg08-26 · 488ms avg08-27 · 610ms avg08-27 · 610ms avg08-28 · 557ms avg08-28 · 557ms avg08-29 · 558ms avg08-29 · 558ms avg08-30 · 555ms avg08-30 · 555ms avg08-31 · 467ms avg08-31 · 467ms avg09-01 · 471ms avg09-01 · 471ms avg09-02 · 525ms avg09-02 · 525ms avg09-03 · 417ms avg09-03 · 417ms avg09-04 · 534ms avg09-04 · 534ms avg09-05 · 395ms avg09-05 · 395ms avg09-06 · 440ms avg09-06 · 440ms avg09-07 · 373ms avg09-07 · 373ms avg09-08 · 409ms avg09-08 · 409ms avg09-09 · 389ms avg09-09 · 389ms avg09-10 · 382ms avg09-10 · 382ms avg09-11 · 424ms avg09-11 · 424ms avg08-1309-11
AVG RESP 434ms
PRICE (captured 402, USD)
08-12 · $0.0109-11 · $0.01$0.0108-1209-11

Median across 3 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
08-12 uptime: 100.0% compliance: 100% checks08-13 uptime: 100.0% compliance: 100% checks08-14 uptime: 100.0% compliance: 100% checks08-15 uptime: 100.0% compliance: 100% checks08-16 uptime: 100.0% compliance: 100% checks08-17 uptime: 100.0% compliance: 100% checks08-18 uptime: 100.0% compliance: 100% checks08-19 uptime: 100.0% compliance: 100% checks08-20 uptime: 100.0% compliance: 100% checks08-21 uptime: 100.0% compliance: 100% checks08-22 uptime: 100.0% compliance: 100% checks08-23 uptime: 100.0% compliance: 100% checks08-24 uptime: 100.0% compliance: 100% checks08-25 uptime: 100.0% compliance: 100% checks08-26 uptime: 100.0% compliance: 100% checks08-27 uptime: 100.0% compliance: 100% checks08-28 uptime: 100.0% compliance: 100% checks08-29 uptime: 100.0% compliance: 100% checks08-30 uptime: 100.0% compliance: 100% checks08-31 uptime: 99.9% compliance: 100% checks09-01 uptime: 99.9% compliance: 100% checks09-02 uptime: 99.9% compliance: 100% checks09-03 uptime: 99.9% compliance: 100% checks09-04 uptime: 100.0% compliance: 100% checks09-05 uptime: 100.0% compliance: 100% checks09-06 uptime: 100.0% compliance: 100% checks09-07 uptime: 100.0% compliance: 100% checks09-08 uptime: 100.0% compliance: 100% checks09-09 uptime: 100.0% compliance: 100% checks09-10 uptime: 100.0% compliance: 100% checks09-11 uptime: 100.0% compliance: 100% checksuptimecompliance08-1209-11

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)
price percentile in AI
site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
building volume history (1 day so far)
DISTINCT BUYERS
building buyer history (1 day so far)

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-12 · last up 2026-09-11

  • 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

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 238ms
● OK 338ms
● OK 367ms
● OK 390ms
● OK 222ms
● OK 613ms
● SLOW 679ms
● OK 388ms
● OK 420ms
● OK 260ms
● OK 330ms
● OK 586ms
● OK 547ms
● OK 515ms
● OK 295ms
● OK 161ms
● OK 221ms
● OK 252ms
18 of 2,708 checks · live count

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[ update this listing ]

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