Agent Execution Trace Validator

agent.execution_trace_validate

ProductionBounded custom (Class B)Deterministicstrictmoderatev1.0.0

No network

Overview

You send 1 to 10,000 events with id, optional parentId, type, ISO-8601 timestamp, optional correlationId and status STARTED, RUNNING, SUCCEEDED, FAILED or CANCELLED. clockSkewMs 0-60,000 (default 0) tolerates child-before-parent skew. We report roots, depth, duration and diagnostics for cycles, missing parents, duplicate ids, timestamp inversions, terminal-before-start and depth over 256. We do not retrieve distributed traces or diagnose latency.

A cyclic or orphaned trace is not a replayable audit record.

Reliability

Deterministic graph and time checks; timestamps are parsed, never taken from a clock. TRACE_INVALID — trigger: a malformed timestamp or empty events; retryable: no; next: send ISO-8601 instants. TRACE_LIMIT_EXCEEDED — trigger: more than 10,000 events; retryable: no; next: window the trace.

Context footprint

Counts and diagnostics only. A successful call costs 2 execution credits.

When to use it

When a captured agent trace must be a forest with legal times and statuses.

When you need to fetch traces, score latency, or apply full OpenTelemetry semantics.

Scope

Note

Validates parent, time and status invariants in a bounded agent execution trace.

Non-goals

Does not retrieve distributed traces
Does not diagnose latency
Does not validate full OpenTelemetry semantics

Properties

IdempotentRetry safeStreaming supportedFile input supportedRequires external service

Capabilities

analysisvalidation

Cost & billing

Flat rate per invocation

MetercallsBillable onsuccessCost per call2 credits

File handling

Accepts file_refProduces file_refMax input2 MB

How we handle your data

Sensitive input, safe output

What this means

This skill may receive sensitive content, but it does not target sensitive data and returns only a structured non-sensitive result.

Squillify guarantees

Runs inside Squillify
This skill runs inside Squillify.
Payloads are not sent to an external service by this skill.
Squillify does not permanently store submitted payloads.
Telemetry records metadata only, not submitted content.
Submitted payloads are not used for training.
Submitted payloads are not reviewed by humans.
This skill does not target sensitive data.
The response does not contain submitted content.

Your responsibility

Squillify does not determine whether submitted content is sensitive. Your application is responsible for deciding what data it is allowed to submit. Your application is responsible for securing the response.

Read the Microskill Data Handling Policy

Input schema

Field	Type	Required	Description
events	array	Yes	Bounded array of 1 through 10001 events; runtime accepts at most 10000.
clockSkewMs	integer	No	Child-before-parent allowance in milliseconds. Omit it for 0.

Output schema

Field	Type	Required	Description
valid	boolean	Yes	True when no ERROR diagnostic was raised.
eventCount	integer	Yes	How many events were judged.
rootCount	integer	Yes	How many events had no parentId.
maxDepth	integer	Yes	Longest parent chain from a root.
durationMs	integer	Yes	Milliseconds from earliest to latest timestamp.
clockSkewMs	integer	Yes	Applied skew allowance.
diagnostics	array	Yes	Normalized findings as a bounded array of 0 through 500 closed {code, severity, message, path, source, details} objects.

API contract

POST /v1/execute

curl

curl -sS -X POST "$BASE/v1/execute" -H "Authorization: Bearer $KEY" -H 'Content-Type: application/json' -d '{"skillKey":"agent.execution_trace_validate","input":{"events":[{"id":"a","type":"task","timestamp":"2026-08-27T00:00:00Z","status":"STARTED"}]}}'

Integrations

TypeScript SDK

import { Squillify } from "@squillify/sdk";

const sq = new Squillify({ apiKey: process.env.SQUILLIFY_API_KEY });

const { output } = await sq.execute("agent.execution_trace_validate", {"events":[{"status":"STARTED","timestamp":"2026-08-27T00:00:00Z","type":"task","id":"root"},{"id":"child","parentId":"root","type":"step","status":"RUNNING","timestamp":"2026-08-27T00:00:01Z"}]});

Errors

Code	HTTP	Retryable	Description
VALIDATION_ERROR	400	No	The request payload failed schema validation.
UNAUTHORIZED	401	No	Missing or invalid API key.
SKILL_NOT_ACCESSIBLE	403	No	The API key is not granted access to this skill.
SKILL_NOT_AVAILABLE_FOR_PLAN	403	No	This skill is not included in your current plan.
PLAN_ELIGIBILITY_UNAVAILABLE	503	Yes	Plan eligibility could not be decided. Retry after backoff.
SKILL_NOT_FOUND	404	No	The requested skill or version does not exist.
TENANT_RATE_LIMITED	429	Yes	Request rate limit exceeded. Retry after backoff.
QUOTA_EXCEEDED	429	Yes	Plan quota exhausted. Retryable once the quota period resets.
EXECUTION_TIMEOUT	504	Yes	Execution exceeded the allowed time budget.
TRACE_INVALID	400	No	The request payload failed this skill's input validation.
TRACE_LIMIT_EXCEEDED	429	No	A size, quota, rate, or time limit was exceeded.

Other limits

Limit	Value
Recommended inline bytes	32 KiB

Limitations

Does not retrieve distributed traces
Does not diagnose latency
Does not validate full OpenTelemetry semantics
Pulling traces from a backend
Scoring latency SLOs

How to call

POST /v1/execute (requires authentication)

Request bodyjson

{
  "skillKey": "agent.execution_trace_validate",
  "input": {
    "events": [
      {
        "status": "STARTED",
        "timestamp": "2026-08-27T00:00:00Z",
        "type": "task",
        "id": "root"
      },
      {
        "id": "child",
        "parentId": "root",
        "type": "step",
        "status": "RUNNING",
        "timestamp": "2026-08-27T00:00:01Z"
      }
    ]
  }
}

Examples

A parent and a later child form a valid forest

Inputjson

{
  "events": [
    {
      "status": "STARTED",
      "timestamp": "2026-08-27T00:00:00Z",
      "type": "task",
      "id": "root"
    },
    {
      "id": "child",
      "parentId": "root",
      "type": "step",
      "status": "RUNNING",
      "timestamp": "2026-08-27T00:00:01Z"
    }
  ]
}

Expected outputjson

{
  "eventCount": 2,
  "durationMs": 1000,
  "valid": true,
  "clockSkewMs": 0,
  "diagnostics": [],
  "rootCount": 1,
  "maxDepth": 2
}

Tip

One root, depth 2, no diagnostics.

A two-node parent cycle is invalid