# Verity Suite Compass Quick

> Verity Suite Compass Quick is a paid API for AI agents from suite.veritylayer.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Given a list of candidate options and constraints, returns a calibrated verdict (recommend, tentative, gather_more_info, or no_viable_option) with confidence score and reasons for the best choice.

## Facts

- Endpoint: POST https://suite.veritylayer.dev/compass/quick
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/verity-suite-compass-quick-ce924e72
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rmIJnU0xML1o9jw8JwrC0

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 verity-suite-compass-quick-ce924e72 -d '<json body>'
```

Example prompt: I need to pick one of these three database vendors — AWS RDS, PlanetScale, and Supabase — for a startup that needs low cost, Postgres compatibility, and good free tier; the constraint is we can't exceed $50/month and must have row-level security. Use Compass to pick the best one and tell me why.

## When to prefer this

Use this endpoint when an AI agent must make a structured, auditable pick among a discrete set of labeled options and needs a fail-closed, calibrated confidence signal rather than open-ended prose. Prefer it over prompting a general LLM directly when you need a machine-readable verdict enum, a verbatim-matched choice string, and a receipt for the decision. It is especially valuable when the agent must respect hard requirement gates (must-meet constraints that eliminate options) alongside soft preferences, and when you want to avoid hallucinated external facts by supplying explicit evidence.

## Known failure modes

- Missing required fields (options, constraints) returns a validation error
- Options list is empty or has only one item — may return no_viable_option or a trivial recommendation
- Evidence field omitted when options depend on external facts — verdict defaults to what is inferable from constraints alone, potentially less accurate
- Constraints string exceeds 2000 characters — request rejected
- Evidence string exceeds 2000 characters — request rejected
- Payment failure via x402 protocol returns 402 with payment requirements
- Network timeout if upstream processing is slow
- Ambiguous constraints that don't clearly distinguish options may yield a tentative verdict with low confidence

## How this service works

The trust fabric for AI agents — calibrated, fail-closed services agents pay per call.

## Output

Returns a structured verdict object with: a verdict enum (recommend, tentative, gather_more_info, or no_viable_option), the chosen option copied verbatim from the input list (when applicable), a confidence score, a list of concrete reasons grounded in the stated constraints and evidence (including the main tradeoff against the runner-up for recommend/tentative verdicts), and a payment receipt confirming the per-call charge.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "options": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "title": "Options",
   "description": "the candidate choices to pick among; one option per item, stated verbatim as you want it returned"
  },
  "evidence": {
   "anyOf": [
    {
     "type": "string",
     "maxLength": 2000
    },
    {
     "type": "null"
    }
   ],
   "title": "Evidence",
   "default": null,
   "description": "facts known about the options (specs, prices, availability, data); for any current or external fact, only what is stated here may be used"
  },
  "constraints": {
   "type": "string",
   "title": "Constraints",
   "maxLength": 2000,
   "minLength": 1,
   "description": "the goal plus hard requirements (must-meet gates), soft preferences (weigh, don't gate), and any priorities or tradeoffs between them"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/verity-suite-compass-quick-ce924e72/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from suite.veritylayer.dev](https://www.zero.xyz/host/suite.veritylayer.dev/llms.txt)