x402 List

x402 Protocol Service Directory

●

StableUpload

AI PAYMENT-READY imported

payment-ready until 2026-08-20

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

Paid file and static site hosting for agents. Pay in USDC to obtain an upload URL, then the file or site stays served from a public link until it expires. Tiered pricing, from 0.005 to 2 dollars.

Pay from $2.00 in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-02-10 · $190.89 all-time · settled via coinbase, payAI

BASE URL https://stableupload.dev │ ENDPOINTS 2 │ NETWORK Base / Solana │ ASSET USDC │ MEMBER SINCE 2026-07-20 │ MONITORED SINCE 2026-07-20

ASSESSMENT

updated 4h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%
uptime 24h
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
843ms
avg response
405ms
total checks
2,144

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 $2.00 (p92 in AI)
price (min)
$2.00
category percentile (min)
p92 in AI
endpoints / prices
2 / 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
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

traction $12.98 30d · 81 buyers
volume 30d
$12.98
buyers 30d
81
settlements 30d
1,159
first settlement
2026-02-10
last settlement
2026-08-13
top buyer share
28% of 30d volume
trend 7d vs 30d
0.44x the 30d daily rate
networks
eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$190.89
settlements all-time
8,437
median settlement 30d
$0.005
max settlement 30d
$2.00
settled via
coinbase ($12.97, 1,158 tx), payAI ($0.005, 1 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 /api/site $2.00 Base/Solana USDC header
POST /api/upload $2.00 Base/Solana USDC header
2 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /api/site 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://stableupload.dev/api/site'
// 402 response (captured by monitor) · 2 payloads · click to expand 
[
  {
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x06dFF3c8380b5D1799874adA903fc3422882FD6f",
        "amount": "2000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"
        },
        "payTo": "95xcrFtRVn2fkoAKiCUKxPpTc1GN8MTyonVwLFfJfzux",
        "amount": "2000000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://stableupload.dev/api/site",
      "tags": [
        "Site"
      ],
      "method": "POST",
      "mimeType": "application/json",
      "description": "Buy a site upload slot. Upload a zip file, then activate to extract and serve as a static site.",
      "serviceName": "StableUpload"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "tier": "short-10mb",
              "filename": "site.zip"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "maxSize": 10485760,
              "postUrl": "https://stableupload-prod.s3.us-east-1.amazonaws.com/",
              "uploadId": "bs94s5b4ca",
              "expiresAt": "2026-05-02T16:00:00.000Z",
              "uploadUrl": "https://stableupload-prod.s3.us-east-1.amazonaws.com/",
              "postFields": {
                "key": "uploads/bs94s5b4ca/site.zip",
                "policy": "base64-policy",
                "x-amz-date": "20260425T160000Z",
                "Content-Type": "application/zip",
                "x-amz-algorithm": "AWS4-HMAC-SHA256",
                "x-amz-signature": "hex-signature",
                "x-amz-credential": "AKIAEXAMPLE/20260425/us-east-1/s3/aws4_request"
              },
              "curlExample": "curl -X POST \"https://stableupload-prod.s3.us-east-1.amazonaws.com/\" -F \"key=uploads/bs94s5b4ca/site.zip\" -F \"Content-Type=application/zip\" -F \"x-amz-algorithm=AWS4-HMAC-SHA256\" -F \"x-amz-credential=AKIAEXAMPLE/20260425/us-east-1/s3/aws4_request\" -F \"x-amz-date=20260425T160000Z\" -F \"policy=base64-policy\" -F \"x-amz-signature=hex-signature\" -F \"[email protected];type=application/zip\"",
              "uploadMethod": "post",
              "uploadUrlExpiresAt": "2026-04-25T16:15:00.000Z"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "required": [
                    "filename",
                    "tier"
                  ],
                  "properties": {
                    "tier": {
                      "enum": [
                        "10mb",
                        "100mb",
                        "1gb",
                        "short-10mb",
                        "short-100mb",
                        "short-1gb"
                      ],
                      "type": "string",
                      "description": "Site tier. Default 6-month tiers: 10mb ($0.02), 100mb ($0.20), 1gb ($2.00). Short-term 7-day workflow site tiers: short-10mb ($0.005), short-100mb ($0.02), short-1gb ($0.10). short-5gb is not supported for sites."
                    },
                    "filename": {
                      "type": "string",
                      "maxLength": 512,
                      "minLength": 1,
                      "description": "Name of the zip file to upload"
                    },
                    "policyTtlSeconds": {
                      "type": "integer",
                      "maximum": 86400,
                      "minimum": 60,
                      "description": "Optional upload URL/form expiration in seconds, 60-86400. Use longer TTLs only when reserving an output slot for a downstream service."
                    }
                  },
                  "additionalProperties": false
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "required": [
                    "uploadId",
                    "uploadUrl",
                    "uploadMethod",
                    "uploadUrlExpiresAt",
                    "expiresAt",
                    "maxSize",
                    "curlExample"
                  ],
                  "properties": {
                    "txHash": {
                      "type": "string"
                    },
                    "maxSize": {
                      "type": "number"
                    },
                    "postUrl": {
                      "type": "string"
                    },
                    "uploadId": {
                      "type": "string"
                    },
                    "expiresAt": {
                      "type": "string"
                    },
                    "uploadUrl": {
                      "type": "string"
                    },
                    "postFields": {
                      "type": "object",
                      "propertyNames": {
                        "type": "string"
                      },
                      "additionalProperties": {
                        "type": "string"
                      }
                    },
                    "curlExample": {
                      "type": "string"
                    },
                    "uploadMethod": {
                      "enum": [
                        "put",
                        "post"
                      ],
                      "type": "string"
                    },
                    "uploadUrlExpiresAt": {
                      "type": "string"
                    }
                  },
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x06dFF3c8380b5D1799874adA903fc3422882FD6f",
        "amount": "2000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"
        },
        "payTo": "95xcrFtRVn2fkoAKiCUKxPpTc1GN8MTyonVwLFfJfzux",
        "amount": "2000000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://stableupload.dev/api/upload",
      "tags": [
        "Upload"
      ],
      "method": "POST",
      "mimeType": "application/json",
      "description": "Buy an upload slot. Agent uploads file via returned URL.",
      "serviceName": "StableUpload"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "tier": "short-10mb",
              "filename": "quick-note.txt",
              "contentType": "text/plain"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "maxSize": 10485760,
              "postUrl": "https://stableupload-prod.s3.us-east-1.amazonaws.com/",
              "uploadId": "2s42wjsk3a",
              "expiresAt": "2026-05-02T16:00:00.000Z",
              "publicUrl": "https://f.stableupload.dev/2s42wjsk3a/quick-note.txt",
              "uploadUrl": "https://stableupload-prod.s3.us-east-1.amazonaws.com/",
              "postFields": {
                "key": "uploads/2s42wjsk3a/quick-note.txt",
                "policy": "base64-policy",
                "x-amz-date": "20260425T160000Z",
                "Content-Type": "text/plain",
                "x-amz-algorithm": "AWS4-HMAC-SHA256",
                "x-amz-signature": "hex-signature",
                "x-amz-credential": "AKIAEXAMPLE/20260425/us-east-1/s3/aws4_request"
              },
              "curlExample": "curl -X POST \"https://stableupload-prod.s3.us-east-1.amazonaws.com/\" -F \"key=uploads/2s42wjsk3a/quick-note.txt\" -F \"Content-Type=text/plain\" -F \"x-amz-algorithm=AWS4-HMAC-SHA256\" -F \"x-amz-credential=AKIAEXAMPLE/20260425/us-east-1/s3/aws4_request\" -F \"x-amz-date=20260425T160000Z\" -F \"policy=base64-policy\" -F \"x-amz-signature=hex-signature\" -F \"[email protected];type=text/plain\"",
              "uploadMethod": "post",
              "uploadUrlExpiresAt": "2026-04-25T16:15:00.000Z"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "required": [
                    "filename",
                    "contentType",
                    "tier"
                  ],
                  "properties": {
                    "tier": {
                      "enum": [
                        "10mb",
                        "100mb",
                        "1gb",
                        "short-10mb",
                        "short-100mb",
                        "short-1gb",
                        "short-5gb"
                      ],
                      "type": "string",
                      "description": "Upload tier. Default 6-month tiers: 10mb ($0.02), 100mb ($0.20), 1gb ($2.00). Short-term 7-day workflow tiers: short-10mb ($0.005), short-100mb ($0.02), short-1gb ($0.10), short-5gb ($0.50, file uploads only)."
                    },
                    "filename": {
                      "type": "string",
                      "maxLength": 512,
                      "minLength": 1,
                      "description": "Name of the file to upload"
                    },
                    "contentType": {
                      "type": "string",
                      "maxLength": 255,
                      "minLength": 1,
                      "description": "MIME type of the file (e.g. image/png, video/mp4)"
                    },
                    "policyTtlSeconds": {
                      "type": "integer",
                      "maximum": 86400,
                      "minimum": 60,
                      "description": "Optional upload URL/form expiration in seconds, 60-86400. Use longer TTLs only when reserving an output slot for a downstream service."
                    }
                  },
                  "additionalProperties": false
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "required": [
                    "uploadId",
                    "uploadUrl",
                    "uploadMethod",
                    "uploadUrlExpiresAt",
                    "publicUrl",
                    "expiresAt",
                    "maxSize",
                    "curlExample"
                  ],
                  "properties": {
                    "txHash": {
                      "type": "string"
                    },
                    "maxSize": {
                      "type": "number"
                    },
                    "postUrl": {
                      "type": "string"
                    },
                    "uploadId": {
                      "type": "string"
                    },
                    "expiresAt": {
                      "type": "string"
                    },
                    "publicUrl": {
                      "type": "string"
                    },
                    "uploadUrl": {
                      "type": "string"
                    },
                    "postFields": {
                      "type": "object",
                      "propertyNames": {
                        "type": "string"
                      },
                      "additionalProperties": {
                        "type": "string"
                      }
                    },
                    "curlExample": {
                      "type": "string"
                    },
                    "uploadMethod": {
                      "enum": [
                        "put",
                        "post"
                      ],
                      "type": "string"
                    },
                    "uploadUrlExpiresAt": {
                      "type": "string"
                    }
                  },
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 24h selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/stableupload/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% · 409ms avg08-1308-13
24h UPTIME 100%
RESPONSE TIME
08-13 · 409ms avg08-13 · 409ms avg08-1308-13
AVG RESP 405ms
PRICE (captured 402, USD)
08-12 · $2.0008-13 · $2.00$2.0008-1208-13

Median across 2 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% checksuptimecompliance08-1208-13

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 2026-07-20 · last up 2026-08-13

  • 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 496ms
● OK 563ms
● OK 358ms
● OK 371ms
● OK 450ms
● OK 383ms
● OK 242ms
● OK 374ms
● OK 326ms
● OK 360ms
● OK 557ms
● OK 403ms
● OK 394ms
● OK 380ms
● OK 257ms
● OK 573ms
● OK 354ms
● OK 475ms
18 of 2,158 checks · live count

EMBED THIS BADGE

Show that StableUpload is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

StableUpload listed on x402-list
status
StableUpload uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/stableupload?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/stableupload.svg" alt="StableUpload listed on x402-list" height="28">
</a>
// Markdown
[![StableUpload on x402-list](https://x402-list.com/badge/stableupload.svg)](https://x402-list.com/services/stableupload?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/stableupload?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/stableupload.svg?data=uptime" alt="StableUpload uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/stableupload/update.