x402 List

x402 Protocol Service Directory

jsonguard

Compute

Repair malformed JSON and validate against a JSON Schema. POST malformed JSON (and an optional schema); returns repaired text, the parsed value, and validation errors. 0.01 USDC on Base per call via x402, no account.

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

first settlement 2026-07-21 · $0.33 all-time · last settled 2026-07-24

BASE URL https://jsonguard.leeworks.dev WEBSITE https://jsonguard.leeworks.dev ENDPOINTS 1 NETWORK Base ASSET USDC MEMBER SINCE 2026-07-25 MONITORED SINCE 2026-07-25

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 100%
uptime 24h
-
uptime 7d
-
uptime 30d
-
uptime 90d
-
response p95
852ms
avg response
852ms
total checks
1
compliance A (11/11)

11 of 11 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.01 (p57 in Compute)
price (min)
$0.01
category percentile (min)
p57 in Compute
endpoints / prices
1 / 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
725d
registrar
CloudFlare, Inc.
hosting
custom
domain created
2024-07-30

Identity facts, not a risk score.

traction $0 30d · 0 buyers
volume 30d
$0
buyers 30d
0
settlements 30d
0
first settlement
2026-07-21
last settlement
2026-07-24
top buyer share
-
trend 7d vs 30d
-
networks
eip155:8453
volume all-time
$0.33
settlements all-time
5
median settlement 30d
$0
max settlement 30d
$0
settled via
-

Attributed pro-quota: this payout address is shared, so volume and buyers are the operator-level figure divided by the services sharing it. A declared convention, not an individually observed measure, and still a conservative undercount.

Currently sharing this payout address with x402 Agent-Commerce Starter + Platform Map.

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

WHAT IT DOES

ai-derived

Repairs malformed JSON and validates it against a JSON Schema

category
-validation
in
body
validationrepair

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
POST /v1/validate $0.01 Base USDC
1 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /v1/validate 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://jsonguard.leeworks.dev/v1/validate'
// 402 response (captured by monitor) · 1 payload · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xa8B061d96F69426f11bcC807BfA00f0AF79541a7",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "http://jsonguard.leeworks.dev/v1/validate",
      "mimeType": "application/json",
      "description": "Repair malformed JSON and validate against a JSON Schema"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "data": "{name:'ada', tags:['x',]}",
              "schema": {
                "type": "object",
                "required": [
                  "name"
                ],
                "properties": {
                  "name": {
                    "type": "string"
                  }
                }
              }
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "valid": true,
              "errors": null,
              "parsed": {
                "name": "ada"
              },
              "repaired": "{\"name\":\"ada\"}",
              "repairError": null
            }
          }
        },
        "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": [
                    "data"
                  ],
                  "properties": {
                    "data": {
                      "type": [
                        "string",
                        "object",
                        "array"
                      ],
                      "description": "Malformed JSON string (repaired) or a parsed value"
                    },
                    "schema": {
                      "type": "object",
                      "description": "Optional JSON Schema to validate against"
                    }
                  }
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts share the 7d window selected here. Every series is also served as JSON at /api/v1/services/jsonguard/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
07-25 · uptime 100.0% · 664ms avg07-2507-25
7d UPTIME 100%
RESPONSE TIME
07-25 · 664ms avg07-25 · 664ms avg07-2507-25
AVG RESP 721ms
PRICE (captured 402, USD)
building price history ($0.01)
SUB-SCORES (uptime + x402 compliance)
building assessment history (1 day so far)
VOLUME (on-chain settlement, USD)
07-21 · $0.0107-23 · $0.0207-24 · $0.63peak $0.6307-2107-24

Shared payout address (1 other service). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service figure is attributed, the assessment block and the ranking, it is the address total divided pro-quota by the 2 services sharing it: a declared convention, not an individually observed measure.

DISTINCT BUYERS
07-21 · 1 buyer07-23 · 1 buyer07-24 · 2 buyerspeak 2 buyers07-2107-24

Shared payout address (1 other service). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service buyer count is attributed, the assessment block and the ranking, it is divided pro-quota by the 2 services sharing the address and can be fractional: a declared convention, not an individually observed measure.

COMPLIANCE

11/11 checks pass · grade A
  • 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

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (12) · click to expand
TIME STATUS RESP
● OK 921ms
● OK 504ms
● SLOW 1245ms
● OK 894ms
● OK 555ms
● OK 369ms
● OK 361ms
● OK 541ms
● SLOW 1127ms
● OK 542ms
● OK 735ms
● OK 852ms

EMBED THIS BADGE

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

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