x402 List

x402 Protocol Service Directory

○

GPU Forge

Compute

payment-ready 2026-08-05, probe currently failing

Pay-per-job GPU compute API. gpu.probe returns a live nvidia-smi GPU inventory ($0.01); llm.generate runs llama3.1:8b text generation ($0.05). USDC via x402 on Base and Polygon; accepts both standard signed-authorization payments (X-PAYMENT / payment-signature, self-settled) and direct-transfer X-Payment-Tx. Open source: https://github.com/ParabellumDevteam/gpu-forge

Pay from $0.01 to $0.05 per request in USDC on Base / Polygon, settled onchain via the x402 protocol, no signup, no API key needed.

listed 2026-07-12 · no on-chain settlement recorded yet

BASE URL https://forge.parabellum.tech │ WEBSITE https://github.com/ParabellumDevteam/gpu-forge │ ENDPOINTS 2 │ NETWORK Base / Polygon │ ASSET USDC │ MEMBER SINCE 2026-07-12 │ MONITORED SINCE 2026-07-12

ASSESSMENT

updated 3h ago

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

reliability 71.4%
uptime 24h
0%
uptime 7d
0%
uptime 30d
71.4%
uptime 90d
74%
response p95
1036ms
avg response
531ms
total checks
1,958

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

compliance A (14/14), stale (probe failing)

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

jump to compliance checklist

price $0.01 to $0.05 (p67 in Compute)
price (min)
$0.01
price (max)
$0.05
category percentile (min)
p67 in Compute
category percentile (max)
p83 in Compute
endpoints / prices
2 / 2
model
tiered
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
6880d
registrar
MarkMonitor Inc.
hosting
custom
domain created
2007-10-09

Identity facts, not a risk score.

traction $0.00 30d · 0 buyers
volume 30d
$0.00
buyers 30d
0
settlements 30d
0
first settlement
---
last settlement
---
top buyer share
-
trend 7d vs 30d
-
networks
eip155:137, eip155:8453
volume all-time
$0
settlements all-time
0
median settlement 30d
-
max settlement 30d
-
settled via
-

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

Provides GPU computing services for job execution and LLM text generation

category
gpu-compute
gpu-computellm-generationjob-execution

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /v1/jobs/gpu.probe $0.01 Base/Polygon USDC header
GET /v1/jobs/llm.generate $0.05 Base/Polygon USDC header
2 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /v1/jobs/gpu.probe returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://forge.parabellum.tech/v1/jobs/gpu.probe'
// 402 response (captured by monitor) · 2 payloads · click to expand 
[
  {
    "error": "X-Payment-Tx header is required",
    "accepts": [
      {
        "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
        "extra": {
          "name": "USD Coin",
          "chainId": 8453,
          "version": "2",
          "decimals": 6,
          "amountUsd": "0.01",
          "settlement": "direct-transfer",
          "instructions": "Send the exact USDC amount on base (chainId 8453) to payTo, then retry this request with header X-Payment-Tx: 0x<txhash>. Each tx hash is single-use."
        },
        "payTo": "0xAA0d72E62E9B458Eb1C4eDfD92336c823C992DeB",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "outputSchema": {
          "input": {
            "body": {
              "type": "object",
              "properties": {},
              "additionalProperties": false
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "properties": {
              "gpu": {
                "type": "string",
                "description": "name, VRAM total/used, utilization, temperature"
              }
            }
          }
        },
        "maxAmountRequired": "10000",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x3c499c542cef5e3811e1192ce70d8cc03d5c3359",
        "extra": {
          "name": "USD Coin",
          "chainId": 137,
          "version": "2",
          "decimals": 6,
          "amountUsd": "0.01",
          "settlement": "direct-transfer",
          "instructions": "Send the exact USDC amount on polygon (chainId 137) to payTo, then retry this request with header X-Payment-Tx: 0x<txhash>. Each tx hash is single-use."
        },
        "payTo": "0xAA0d72E62E9B458Eb1C4eDfD92336c823C992DeB",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:137",
        "outputSchema": {
          "input": {
            "body": {
              "type": "object",
              "properties": {},
              "additionalProperties": false
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "properties": {
              "gpu": {
                "type": "string",
                "description": "name, VRAM total/used, utilization, temperature"
              }
            }
          }
        },
        "maxAmountRequired": "10000",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://forge.parabellum.tech/v1/jobs/gpu.probe",
      "mimeType": "application/json",
      "description": "gpu.probe: Returns live nvidia-smi output. Cheap way for agents to verify real GPU capacity before buying bigger jobs."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {},
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "example": {
              "gpu": "NVIDIA RTX 4000 Ada Generation, 20475 MiB total, 2011 MiB used, 3 % util, 41 C"
            }
          }
        },
        "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",
                  "properties": {},
                  "additionalProperties": false
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                }
              }
            },
            "output": {
              "type": "object",
              "properties": {
                "example": {
                  "type": "object",
                  "properties": {
                    "gpu": {
                      "type": "string",
                      "description": "name, VRAM total/used, utilization, temperature"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "X-Payment-Tx header is required",
    "accepts": [
      {
        "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
        "extra": {
          "name": "USD Coin",
          "chainId": 8453,
          "version": "2",
          "decimals": 6,
          "amountUsd": "0.05",
          "settlement": "direct-transfer",
          "instructions": "Send the exact USDC amount on base (chainId 8453) to payTo, then retry this request with header X-Payment-Tx: 0x<txhash>. Each tx hash is single-use."
        },
        "payTo": "0xAA0d72E62E9B458Eb1C4eDfD92336c823C992DeB",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:8453",
        "outputSchema": {
          "input": {
            "body": {
              "type": "object",
              "required": [
                "prompt"
              ],
              "properties": {
                "model": {
                  "type": "string",
                  "description": "Optional Ollama model name, defaults to llama3.1:8b"
                },
                "prompt": {
                  "type": "string",
                  "minLength": 1,
                  "description": "The prompt to generate from"
                },
                "max_tokens": {
                  "type": "number",
                  "description": "Max tokens to generate, capped at 2048"
                }
              }
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "properties": {
              "model": {
                "type": "string"
              },
              "response": {
                "type": "string"
              },
              "eval_count": {
                "type": "number"
              }
            }
          }
        },
        "maxAmountRequired": "50000",
        "maxTimeoutSeconds": 300
      },
      {
        "asset": "0x3c499c542cef5e3811e1192ce70d8cc03d5c3359",
        "extra": {
          "name": "USD Coin",
          "chainId": 137,
          "version": "2",
          "decimals": 6,
          "amountUsd": "0.05",
          "settlement": "direct-transfer",
          "instructions": "Send the exact USDC amount on polygon (chainId 137) to payTo, then retry this request with header X-Payment-Tx: 0x<txhash>. Each tx hash is single-use."
        },
        "payTo": "0xAA0d72E62E9B458Eb1C4eDfD92336c823C992DeB",
        "amount": "50000",
        "scheme": "exact",
        "network": "eip155:137",
        "outputSchema": {
          "input": {
            "body": {
              "type": "object",
              "required": [
                "prompt"
              ],
              "properties": {
                "model": {
                  "type": "string",
                  "description": "Optional Ollama model name, defaults to llama3.1:8b"
                },
                "prompt": {
                  "type": "string",
                  "minLength": 1,
                  "description": "The prompt to generate from"
                },
                "max_tokens": {
                  "type": "number",
                  "description": "Max tokens to generate, capped at 2048"
                }
              }
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "properties": {
              "model": {
                "type": "string"
              },
              "response": {
                "type": "string"
              },
              "eval_count": {
                "type": "number"
              }
            }
          }
        },
        "maxAmountRequired": "50000",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://forge.parabellum.tech/v1/jobs/llm.generate",
      "mimeType": "application/json",
      "description": "llm.generate: Text generation on a locally hosted open model via Ollama/vLLM (OpenAI-compatible or Ollama API). Body: { model, prompt, max_tokens? }"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "prompt": "Say hello in one short sentence.",
              "max_tokens": 64
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "object",
            "example": {
              "model": "llama3.1:8b",
              "response": "Hello there, nice to meet you!",
              "eval_count": 9
            }
          }
        },
        "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",
                  "required": [
                    "prompt"
                  ],
                  "properties": {
                    "model": {
                      "type": "string",
                      "description": "Optional Ollama model name, defaults to llama3.1:8b"
                    },
                    "prompt": {
                      "type": "string",
                      "minLength": 1,
                      "description": "The prompt to generate from"
                    },
                    "max_tokens": {
                      "type": "number",
                      "description": "Max tokens to generate, capped at 2048"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                }
              }
            },
            "output": {
              "type": "object",
              "properties": {
                "example": {
                  "type": "object",
                  "properties": {
                    "model": {
                      "type": "string"
                    },
                    "response": {
                      "type": "string"
                    },
                    "eval_count": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 90d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/gpu-forge/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
07-29 · uptime 85.6% · 631ms avg07-30 · uptime 0.0%07-31 · uptime 0.0%08-01 · uptime 0.0%08-02 · uptime 0.0%08-03 · uptime 1.1% · 782ms avg08-04 · uptime 6.1% · 745ms avg08-05 · uptime 12.5% · 457ms avg08-06 · uptime 0.0%08-07 · uptime 0.0%08-08 · uptime 0.0%08-09 · uptime 0.0%08-10 · uptime 0.0%08-11 · uptime 0.0%08-12 · uptime 0.0%08-13 · uptime 0.0%07-12 · uptime 100.0% · 536ms avg07-13 · uptime 100.0% · 579ms avg07-14 · uptime 100.0% · 582ms avg07-15 · uptime 100.0% · 611ms avg07-16 · uptime 100.0% · 787ms avg07-17 · uptime 100.0% · 563ms avg07-18 · uptime 100.0% · 622ms avg07-19 · uptime 100.0% · 551ms avg07-20 · uptime 100.0% · 524ms avg07-21 · uptime 100.0% · 459ms avg07-22 · uptime 100.0% · 419ms avg07-23 · uptime 100.0% · 450ms avg07-24 · uptime 100.0% · 468ms avg07-25 · uptime 100.0% · 478ms avg07-26 · uptime 100.0% · 523ms avg07-27 · uptime 100.0% · 389ms avg07-28 · uptime 100.0% · 446ms avg07-29 · uptime 85.6% · 631ms avg07-30 · uptime 0.0%07-31 · uptime 0.0%08-01 · uptime 0.0%08-02 · uptime 0.0%08-03 · uptime 1.1% · 782ms avg08-04 · uptime 6.1% · 745ms avg08-05 · uptime 12.5% · 457ms avg08-06 · uptime 0.0%08-07 · uptime 0.0%08-08 · uptime 0.0%08-09 · uptime 0.0%08-10 · uptime 0.0%08-11 · uptime 0.0%08-12 · uptime 0.0%08-13 · uptime 0.0%07-1208-13
90d UPTIME 74%
RESPONSE TIME
07-12 · 536ms avg07-12 · 536ms avg07-13 · 579ms avg07-13 · 579ms avg07-14 · 582ms avg07-14 · 582ms avg07-15 · 611ms avg07-15 · 611ms avg07-16 · 787ms avg07-16 · 787ms avg07-17 · 563ms avg07-17 · 563ms avg07-18 · 622ms avg07-18 · 622ms avg07-19 · 551ms avg07-19 · 551ms avg07-20 · 524ms avg07-20 · 524ms avg07-21 · 459ms avg07-21 · 459ms avg07-22 · 419ms avg07-22 · 419ms avg07-23 · 450ms avg07-23 · 450ms avg07-24 · 468ms avg07-24 · 468ms avg07-25 · 478ms avg07-25 · 478ms avg07-26 · 523ms avg07-26 · 523ms avg07-27 · 389ms avg07-27 · 389ms avg07-28 · 446ms avg07-28 · 446ms avg07-29 · 631ms avg07-29 · 631ms avg07-30 · 0ms avg07-30 · 0ms avg07-31 · 0ms avg07-31 · 0ms avg08-01 · 0ms avg08-01 · 0ms avg08-02 · 0ms avg08-02 · 0ms avg08-03 · 782ms avg08-03 · 782ms avg08-04 · 745ms avg08-04 · 745ms avg08-05 · 457ms avg08-05 · 457ms avg08-06 · 0ms avg08-06 · 0ms avg08-07 · 0ms avg08-07 · 0ms avg08-08 · 0ms avg08-08 · 0ms avg08-09 · 0ms avg08-09 · 0ms avg08-10 · 0ms avg08-10 · 0ms avg08-11 · 0ms avg08-11 · 0ms avg08-12 · 0ms avg08-12 · 0ms avg08-13 · 0ms avg08-13 · 0ms avg07-1208-13
AVG RESP 531ms
PRICE (captured 402, USD)
07-12 · $0.0308-13 · $0.03$0.0307-1208-13

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

SUB-SCORES (uptime + x402 compliance)
07-13 uptime: 100.0% compliance: 92% checks07-14 uptime: 100.0% compliance: 92% checks07-15 uptime: 100.0% compliance: 92% checks07-16 uptime: 100.0% compliance: 92% checks07-17 uptime: 100.0% compliance: 100% checks07-18 uptime: 100.0% compliance: 100% checks07-19 uptime: 100.0% compliance: 100% checks07-20 uptime: 100.0% compliance: 100% checks07-21 uptime: 100.0% compliance: 100% checks07-22 uptime: 100.0% compliance: 100% checks07-23 uptime: 100.0% compliance: 100% checks07-24 uptime: 100.0% compliance: 100% checks07-25 uptime: 100.0% compliance: 100% checks07-26 uptime: 100.0% compliance: 100% checks07-27 uptime: 100.0% compliance: 100% checks07-28 uptime: 100.0% compliance: 100% checks07-29 uptime: 100.0% compliance: 100% checks07-30 uptime: 94.3% compliance: 100% checks07-31 uptime: 89.1% compliance: 100% checks08-01 uptime: 84.7% compliance: 100% checks08-02 uptime: 80.5% compliance: 100% checks08-03 uptime: 77.6% compliance: 100% checks08-04 uptime: 75.6% compliance: 100% checks08-05 uptime: 75.1% compliance: 100% checks08-06 uptime: 75.0% compliance: 100% checks08-07 uptime: 74.8% compliance: 100% checks08-08 uptime: 74.7% compliance: 100% checks08-09 uptime: 74.5% compliance: 100% checks08-10 uptime: 74.4% compliance: 100% checks08-11 uptime: 74.1% compliance: 100% checks08-12 uptime: 72.8% compliance: 100% checks08-13 uptime: 71.4% compliance: 100% checksuptimecompliance07-1308-13

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 Compute
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)
no on-chain volume yet
DISTINCT BUYERS
no distinct buyers yet

COMPLIANCE

14/14 checks pass · grade A · stale (probe failing)

last 402 captured 2026-07-13 · last up 2026-08-05

  • 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
○ DOWN 203ms bad_status: unexpected HTTP 502
○ DOWN 274ms bad_status: unexpected HTTP 502
○ DOWN 238ms bad_status: unexpected HTTP 502
○ DOWN 286ms bad_status: unexpected HTTP 502
○ DOWN 217ms bad_status: unexpected HTTP 502
○ DOWN 649ms bad_status: unexpected HTTP 502
○ DOWN 382ms bad_status: unexpected HTTP 502
○ DOWN 209ms bad_status: unexpected HTTP 502
○ DOWN 554ms bad_status: unexpected HTTP 502
○ DOWN 197ms bad_status: unexpected HTTP 502
○ DOWN 428ms bad_status: unexpected HTTP 502
○ DOWN 236ms bad_status: unexpected HTTP 502
○ DOWN 233ms bad_status: unexpected HTTP 502
○ DOWN 217ms bad_status: unexpected HTTP 502
○ DOWN 615ms bad_status: unexpected HTTP 502
○ DOWN 648ms bad_status: unexpected HTTP 502
○ DOWN 658ms bad_status: unexpected HTTP 502
○ DOWN 227ms bad_status: unexpected HTTP 502
18 of 1,958 checks · live count

EMBED THIS BADGE

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

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