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Crypto Market Pulse – JSON Repair Tool
x402
Crypto Market Pulse – JSON Repair Tool is a paid API for AI agents from cryptopulse.pythonanywhere.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Deterministically repairs malformed JSON strings produced by LLMs, stripping code fences, fixing trailing commas, single quotes, unquoted keys, and unbalanced braces
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-call API for AI agents, settled in USDC on Base mainnet (eip155:8453) via the x402 protocol - no API keys, no signup, no subscription. Live crypto market data: BTC, ETH, SOL, USDC (USD Coin) prices with 24h change (source: OKX), Base mainnet chain snapshot (block height, gas price gwei), real-time USDC-on-Base transfer analytics (transfer count, volume, unique senders and recipients over recent blocks), and USDC/ETH wallet balances plus nonce for any address. Agent utility tools: deterministic JSON repair for LLM output (strip code fences, fix trailing commas, single quotes, unquoted keys, balance braces), DNS A/AAAA lookup, and URL extraction from arbitrary text. Every endpoint returns HTTP 402 with an x402 payment challenge in USDC on Base; pay with any wallet and retry with the PAYMENT-SIGNATURE header. MCP server at /mcp (streamable HTTP, 6 pay-per-call tools). Ideal for crypto portfolios, DeFi dashboards, market analysis agents, data pipelines, and LLM post-processing.
Output
A valid, parseable JSON object with all formatting errors corrected — code fences stripped, trailing commas removed, single quotes replaced with double quotes, unquoted keys quoted, and braces balanced.
Example use cases
Fix LLM pipeline JSON output
“The language model just returned this JSON wrapped in triple backticks with trailing commas and single quotes — can you clean it up so I can parse it properly: ```{'items': ['apple', 'banana',], 'count': 2,}```?”
Repair unquoted keys in agent response
“I got this JSON back from my agent but it has unquoted keys and mismatched braces — please fix it: {name: 'Bob', scores: [10, 20, 30}”
Sanitize chatbot output before database insert
“Before I save this to the database, can you repair the JSON my chatbot generated? It's got a code fence around it and some trailing commas that are breaking my parser: ```json {"user": "carol", "score": 95,}```”
Technical details
Endpoint
GEThttps://cryptopulse.pythonanywhere.com/ai/json-repairWhen to prefer
Choose this endpoint when you need lightweight, deterministic JSON repair without relying on another LLM call — ideal for post-processing AI-generated structured output in data pipelines, agent workflows, or any scenario where JSON must be machine-parseable before downstream use. It is paid per-call with USDC on Base via x402 so no API key setup is needed.
Side effects
- Input is so severely malformed it cannot be deterministically repaired, returning an error or best-effort partial result
- HTTP 402 returned if x402 payment header is missing or invalid
- Empty or null input returns an error
- Non-JSON input (e.g. plain prose) may not produce meaningful output
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": {
"chainId": 8453,
"network": "base-mainnet",
"blockHeight": 21000000,
"gasPriceGwei": 0.05
},
"market": {
"solana": {
"usd": 150,
"usd_24h_change": -0.5
},
"bitcoin": {
"usd": 60000,
"usd_24h_change": 1.5
},
"ethereum": {
"usd": 3000,
"usd_24h_change": 2
},
"usd-coin": {
"usd": 1,
"usd_24h_change": 0
}
},
"servedAt": 1755430000
}
}Tags
x402
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