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agent.alexweb.space Adversarial Output Verifier
x402
agent.alexweb.space Adversarial Output Verifier is a paid API for AI agents from agent.alexweb.space, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-15).
Runs a fast two-pass adversarial verification of an autonomous agent's output against its original task and optional hard constraints.
Price / call$0.08
Success—
StatusUnknown
How this service works
Fast two-pass adversarial verification of an autonomous agent output.
Output
A structured adversarial verification result indicating whether the candidate output correctly satisfies the original task, along with critique details, identified failures or constraint violations, and an overall pass/fail judgment produced by the two-pass adversarial review process.
Example use cases
Code generation correctness check
“My coding agent just produced a SQL query for the task 'return the top 10 customers by revenue for Q1 2024'. Can you run an adversarial two-pass check on it to make sure it actually does that and doesn't violate these constraints: must use CTEs only, no subqueries?”
Content compliance validation
“The agent was supposed to write a product description that is under 150 words, avoids competitor mentions, and stays professional in tone. Here's what it produced — can you adversarially verify it meets all three constraints?”
Autonomous agent pipeline QA
“Before I act on this plan my agent generated for the task 'Outline a 3-step onboarding email sequence', can you do a quick two-pass adversarial check to make sure it's actually sound and doesn't miss anything critical?”
Technical details
Endpoint
POSThttps://agent.alexweb.space/v1/verifyWhen to prefer
Choose this endpoint when you need a fast, lightweight adversarial QA pass on a single agent output before acting on it, especially when a four-pass deep review would be overkill. Prefer it over the sibling four-pass verifier when latency matters and the task is well-scoped. Best suited for high-throughput agent pipelines where each output needs a quick sanity check with optional hard constraint enforcement.
Side effects
- Missing or empty task/candidate fields returning a 400 validation error
- Candidate output too long causing context or token limit errors
- Ambiguous task description leading to low-confidence or inconclusive verdicts
- Network timeout on slow inference for very long inputs
- Incorrect constraint format causing constraints to be ignored
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| task | string | Original task or requirement |
| candidate | string | Candidate output to verify |
| constraints | array | Optional hard constraints |
Tags
x402
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