# Solana Ed25519 Instruction Inspector

> Solana Ed25519 Instruction Inspector is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-15).

Structurally inspects and analyzes Ed25519 signature instructions within a Solana transaction JSON without performing cryptographic verification.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/solana_ed25519_instruction_inspect/invoke
- Price: $0.015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/solana-ed25519-instruction-inspector-279b0583
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NQ_lP2-5OfEKwZXfRP_Dg

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 solana-ed25519-instruction-inspector-279b0583 -d '<json body>'
```

Example prompt: Can you structurally inspect this Solana Ed25519 instruction JSON and tell me whether it's well-formed, how many signatures it contains, and the size of the data bytes?

## When to prefer this

Choose this endpoint when you need a quick, low-cost structural check on a Solana Ed25519 instruction without needing full cryptographic signature verification. Ideal for pre-flight validation, debugging malformed instructions, or building automated pipelines that need to extract metadata (signature count, byte layout) from Ed25519 instructions before processing.

## Known failure modes

- Malformed or non-JSON request_json input returns a parsing error
- request_json exceeds 65536 character limit — rejected
- Input does not represent a valid Solana instruction structure — may return structural invalidity flags rather than an error
- Service does not cryptographically verify signatures — structural validity does not imply authentic signatures
- Payment failure via x402 results in no execution

## 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: structural validity flag, Ed25519 algorithm identifier, signature count, data bytes, offset table bytes, trailing bytes, network context (solana), evidence scope (caller_supplied_data), and a warning that cryptographic verification was not performed. Also includes a receipt with payment and execution metadata.

## 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": [
    "Structural inspection does not cryptographically verify signatures."
   ],
   "service_id": "solana_ed25519_instruction_inspect",
   "analysis_json": "{\"algorithm\":\"ed25519\",\"cryptographic_verification_performed\":false,\"data_bytes\":1,\"offset_table_bytes\":0,\"signature_count\":0,\"structurally_valid\":true,\"trailing_bytes\":0}",
   "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_ed25519_instruction_inspect",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "15000",
   "resultSha256": "17b6352ec8563f6c903c7ebf242d1ef6d0cb0a4f16ced644df9b17f1629d1c74",
   "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/solana-ed25519-instruction-inspector-279b0583/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)