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Nova Agent Output Recovery API
x402
Nova Agent Output Recovery API is a paid API for AI agents from nova-agent-output-recovery.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).
Deterministically recovers, repairs, and validates malformed or unstructured AI agent output into clean, schema-valid JSON for $0.01 USDC per call
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid x402 v2 API for source-linked company research and deterministic recovery of malformed AI-agent output. Configured network: eip155:8453. Agent output recovery is $0.01. Company intelligence reports are $0.25. Cited research memos are $0.99. Prices are fixed exact USDC payments. Call without a payment header first and follow the HTTP 402 PAYMENT-REQUIRED challenge. MCP Streamable HTTP is at https://nova-agent-output-recovery.onrender.com/mcp. The free nova_catalog tool lists prices. Paid MCP tools return an x402 payment-required tool result until payment is verified and settled.
Output
Returns a JSON object containing: the repaired and parsed data object, a status string (e.g. 'recovered-and-valid'), schema validity boolean, the repaired JSON string, the extraction source (e.g. 'embedded-json-candidate'), whether repair was applied, validation errors array, diagnostics (processing time, candidate count, attempts), and an optional retry prompt if recovery failed.
Example use cases
Fixing malformed tool-call JSON
“My LLM agent returned a tool-call response with invalid JSON — there are unquoted values and a trailing comma. Can you repair it and make sure it matches this schema: {"type":"object","properties":{"orderId":{"type":"string"},"amount":{"type":"number"}},"required":["orderId","amount"]}? Here's the raw output: '{orderId: "abc-123", amount: "49.99",}'”
Extracting JSON from markdown-wrapped response
“My agent output came back wrapped in a markdown code fence with some explanation text around it. Can you extract just the JSON and validate it? Raw output: '```json
{"user":"bob","score":42}
``` Here are the final results.'”
Normalizing AI output with schema defaults
“I got a partial JSON response from my AI pipeline that's missing some required fields that have defaults defined in my schema. Can you recover it, apply the defaults, and remove any extra fields not in the schema? Raw output: '{"name":"Carol","unknownField":true}', and here's my schema: {"type":"object","properties":{"name":{"type":"string"},"active":{"type":"boolean","default":false}},"additionalProperties":false,"required":["name","active"]}'}”
Technical details
Endpoint
POSThttps://nova-agent-output-recovery.onrender.com/api/agent-output-recovery?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, low-cost ($0.01) recovery of malformed or partially-structured AI/LLM output — especially when the output may be wrapped in markdown, contain prose mixed with JSON, have type mismatches, or include extra fields. Prefer this over prompt re-engineering when reliability and speed matter more than regeneration cost, or when the original LLM is unavailable for retry. Ideal for production agent pipelines where structured output compliance must be enforced programmatically.
Side effects
- Input rawOutput contains no recoverable JSON structure — returns failed status with retry prompt
- Schema provided is invalid Draft 2020-12 and cannot be compiled — returns error
- rawOutput exceeds 200,000 character limit — rejected at input validation
- Payment header missing or insufficient — HTTP 402 returned with x402 challenge before processing
- Schema validation fails after repair — returns schemaValid false with validationErrors array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| schema | object | Optional JSON Schema Draft 2020-12 used to validate and normalize the recovered value. |
| options | object | |
| rawOutput | string | Raw LLM or AI-agent output. It may contain prose, Markdown code fences, malformed JSON, tool-call arguments, or a partial structured response. |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"name": "Alice",
"tags": [
"ai"
],
"active": true
},
"status": "recovered-and-valid",
"diagnostics": {
"processingMs": 2,
"candidateCount": 2,
"selectedCandidate": 1,
"failedAttemptsBeforeSuccess": 1
},
"retryPrompt": null,
"schemaValid": true,
"repairedJson": "{\"name\":\"Alice\",\"active\":true,\"tags\":[\"ai\"]}",
"extractedFrom": "embedded-json-candidate",
"repairApplied": true,
"schemaProvided": true,
"validationErrors": []
}
}Tags
x402
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