# Service SLA Attestation

> Service SLA Attestation is a paid API for AI agents from phion.systems, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).

Calculates and cryptographically signs availability and latency evidence derived from bounded samples to produce verifiable SLA attestations

## Facts

- Endpoint: POST https://phion.systems/v1/paid/trust/service-sla-attestation
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/service-sla-attestation-eec7b043
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_z-ykVrpESKTztWB6QJ1bf

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 service-sla-attestation-eec7b043 -d '<json body>'
```

Example prompt: Generate a signed SLA attestation for our payment API service using the last 30 days of availability and latency samples, confirming it met our 99.9% uptime and under-200ms p95 latency targets.

## When to prefer this

Choose this endpoint when you need a cryptographically verifiable, signed proof of SLA compliance rather than a plain numeric summary. It is specifically designed for trust-sensitive contexts — such as agent-to-agent handoffs, enterprise audits, or contractual SLA reporting — where a downstream party must independently verify the integrity of the availability and latency evidence without trusting the reporting party alone. Prefer this over raw monitoring dashboards or unsigned reports when auditability and non-repudiation are required.

## Known failure modes

- Insufficient sample data provided — too few data points to compute statistically meaningful SLA metrics
- Sample bounds out of range — samples fall outside acceptable time window or size limits
- Malformed input schema — missing required fields for availability or latency samples
- Signature generation failure — internal cryptographic signing error
- SLA threshold parameters missing or invalid — cannot determine compliance without explicit targets

## How this service works

Calculate and sign availability and latency evidence from bounded samples

## Output

A cryptographically signed attestation document containing calculated availability and latency evidence derived from the provided bounded samples, along with a digital signature that allows recipients to verify the attestation's integrity and provenance without re-running the original measurement.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/service-sla-attestation-eec7b043/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from phion.systems](https://www.zero.xyz/host/phion.systems/llms.txt)