●

StableUpload

AI PAYMENT-READY imported

payment-ready until 2026-09-11

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.

measured since 2026-02-10 (start of our harvest window) · $194.40 all-time · settled via coinbase

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

VERDICT

ranking generation 3

solid 77/100 #81 of 104 in AI by measured score

What the score read on this service: status online, 100% uptime 30d, 2113ms response p95, x402 compliance 14 of 14, $2 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 104 listings, this one among them. That set is wider than the 104 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
Genesis	strong	99	100%	---
x402engine	strong	98	100%	---
kino402	strong	96	100%	---
Arch Tools	strong	96	100%	---
agente-jefe	strong	96	100%	---

5 of 103 other ranked services in AI · see the whole category

ASSESSMENT

updated 4h 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: 2113ms
avg response: 530ms
total checks: 2,784

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 (p93 in AI)

price (min): $2.00
category percentile (min): p93 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 $5.095 30d · 63 buyers

volume 30d: $5.095
buyers 30d: 63
settlements 30d: 632
measured since: 2026-02-10 (start of our harvest window)
last settlement: 2026-09-04
top buyer share: 34% of 30d volume
trend 7d vs 30d: 0.41x the 30d daily rate
networks: eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time: $194.40
settlements all-time: 8,802
median settlement 30d: $0.005
max settlement 30d: $0.20
settled via: coinbase ($5.09, 632 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.

CHANGES

1 in 30d

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes schema changed 15d ago (1 in 30d)

schema changed · 15d ago

schema removed POST /api/site exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"}

schema removed POST /api/upload exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"}

schema added POST /api/site exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"}

schema added POST /api/upload exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 300 {"feePayer":"CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"}

see all changes for this service

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": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
        },
        "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": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
        },
        "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 30d 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

30d UPTIME 100%

RESPONSE TIME

AVG RESP 532ms

PRICE (captured 402, USD)

Median across 2 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

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)

DISTINCT BUYERS

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-20 · last up 2026-09-04

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

06:44:23 UTC ● SLOW 2380ms

06:28:28 UTC ● SLOW 1116ms

06:11:18 UTC ● OK 505ms

05:54:22 UTC ● OK 638ms

05:37:17 UTC ● OK 705ms

05:20:29 UTC ● SLOW 922ms

05:03:19 UTC ● SLOW 859ms

04:46:16 UTC ● OK 683ms

04:29:20 UTC ● OK 753ms

04:13:22 UTC ● SLOW 2206ms

03:57:19 UTC ● SLOW 1066ms

03:41:20 UTC ● SLOW 2300ms

03:25:12 UTC ● OK 662ms

03:09:19 UTC ● OK 322ms

02:53:18 UTC ● OK 497ms

02:37:15 UTC ● OK 406ms

02:21:16 UTC ● OK 287ms

02:05:19 UTC ● OK 339ms

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.

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.