# SignalHarness Solana V0 Message Analyzer

> SignalHarness Solana V0 Message Analyzer is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-13).

Analyzes a serialized Solana versioned (v0) transaction message to extract instruction counts, lookup table usage, key counts, and structural validity warnings.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/solana_v0_message_analyze/invoke
- Price: $0.015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signalharness-solana-v0-message-analyzer-60d949d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4hEzVx9fWaYohEnqRnUdU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability signalharness-solana-v0-message-analyzer-60d949d0 -d '<json body>'
```

Example prompt: Can you analyze this Solana v0 transaction message JSON and tell me how many instructions it has, whether it's valid, and what address lookup tables it references? Here's the message: {paste request_json here}.

## When to prefer this

Use this endpoint when you need fast, stateless structural analysis of a Solana v0 (versioned) transaction message without executing it on-chain. Ideal for pre-signing inspection, instruction auditing, or lookup table mapping. Note: it does not fetch Address Lookup Tables or simulate execution, so use on-chain RPC simulation if you need execution-level validation.

## Known failure modes

- Invalid or malformed request_json string causes parsing failure
- Oversized input exceeding 65536 characters is rejected
- Non-v0 transaction format may produce unexpected analysis results
- Missing or empty request_json returns validation error
- Payment failure or insufficient USDC balance returns 402 response

## How this service works

Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.

## Output

Returns a JSON analysis including instruction_count, lookup_count, readonly_lookup_indexes, writable_lookup_indexes, static_key_count, valid_v0 flag, version number, and any structural warnings. Also includes evidence_scope indicating the analysis is based on caller-supplied data, and the analyzed_network (solana). Does not fetch Address Lookup Tables or simulate execution.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "request_json": {
   "type": "string",
   "maxLength": 65536,
   "minLength": 2
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "replay": false,
  "result": {
   "warnings": [
    "Does not fetch Address Lookup Tables or simulate execution."
   ],
   "service_id": "solana_v0_message_analyze",
   "analysis_json": "{\"instruction_count\":0,\"lookup_count\":0,\"readonly_lookup_indexes\":[],\"static_key_count\":1,\"valid_v0\":true,\"version\":0,\"warnings\":[],\"writable_lookup_indexes\":[]}",
   "evidence_scope": "caller_supplied_data",
   "analyzed_network": "solana"
  },
  "status": "succeeded",
  "receipt": {
   "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
   "usage": [],
   "status": "succeeded",
   "network": "eip155:8453",
   "artifacts": [],
   "endedAtMs": 0,
   "latencyMs": 0,
   "paymentId": "example-payment",
   "receiptId": "example-receipt",
   "requestId": "example-request",
   "serviceId": "solana_v0_message_analyze",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "15000",
   "resultSha256": "623d4280cd367e322ea596951f1890205a75f99157771c7d7bc6017ac4e6e0ee",
   "serviceVersion": "1.0.0",
   "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
  },
  "artifacts": [],
  "requestId": "example-request",
  "executionId": "example-execution"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signalharness-solana-v0-message-analyzer-60d949d0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from signalharness.ai](https://www.zero.xyz/host/signalharness.ai/llms.txt)