# ReactionPulse Quick

> ReactionPulse Quick is a paid API for AI agents from reactionpulse-production.reactionpulse-x402.workers.dev, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-15).

Simulates audience sentiment and reactions to a product launch, announcement, pricing change, or decision from 3 stakeholder perspectives, returning structured JSON with sentiment scores, objections, risks, and suggested fixes.

## Facts

- Endpoint: POST https://reactionpulse-production.reactionpulse-x402.workers.dev/v1/reaction/quick
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/reactionpulse-quick-fb8de048
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_p0-D_5dmgRfsPpJzeIkBm

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 reactionpulse-quick-fb8de048 -d '<json body>'
```

Example prompt: Can you run a quick reaction simulation on this announcement: 'We are raising our Pro plan from $99 to $199 per month starting next quarter, and adding AI-powered matter summaries'? Check it from the customer, skeptical_customer, and investor perspectives, and use our SaaS legal-tech context where we promised no price increases in 2026.

## When to prefer this

Choose ReactionPulse Quick when you need a fast (~10s), low-cost ($0.15) structured reaction simulation from exactly 3 stakeholder perspectives with no configuration overhead. Prefer the sibling ReactionPulse endpoint when you need deeper analysis across 4-6 perspectives with more nuanced output. Best suited for rapid pre-decision checks, lightweight A/B testing of messaging, or automated pipeline steps where speed and structured JSON output matter more than exhaustive coverage.

## Known failure modes

- Prompt too short (under 8 characters) returns validation error
- Prompt exceeds 6000-character limit returns 400 error
- Invalid ISO language code for output_language returns validation error
- Too many perspectives (over 8) returns validation error
- Model timeout or provider error may result in latency exceeding expected ~10s
- Payment failure or insufficient USDC balance returns 402 Payment Required
- Ambiguous or very short prompts may yield low confidence scores and generic reactions

## How this service works

Quick audience reaction check: sentiment analysis and customer feedback simulation for a product launch, announcement, pricing change or decision from 3 stakeholder perspectives. POST JSON {prompt, context?}. Strict JSON: sentiment, objections, risks, fixes. $0.15 USDC on Base, ~10 s.

## Output

Returns a JSON object containing a perspectives array with one entry per stakeholder role, each with: role, stance (positive/negative/mixed), headline, reasoning, sentiment score (0-100), top_appeal, and top_concern. Also includes a confidence score, disclaimer, model/latency metadata, and a request_id.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "prompt": {
   "type": "string",
   "maxLength": 6000,
   "minLength": 8,
   "description": "The subject to simulate reactions to: a product launch, announcement, price change, decision, news item, hypothesis, proposal or URL description. Plain text."
  },
  "context": {
   "type": "string",
   "maxLength": 4000,
   "description": "Optional background: company, market, target segment, constraints, prior history."
  },
  "audience": {
   "type": "string",
   "maxLength": 200,
   "description": "Optional primary audience the subject targets."
  },
  "perspectives": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 40
   },
   "maxItems": 8,
   "description": "Optional preferred perspectives. Suggested values: customer, skeptical_customer, developer, investor, competitor, early_adopter, analyst, content_creator, regulatory_risk, market, employee, partner. Free-text roles are accepted."
  },
  "output_language": {
   "type": "string",
   "default": "en",
   "pattern": "^[a-z]{2}(-[A-Za-z]{2})?$",
   "description": "ISO language code for the output text."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "meta": {
   "model": "claude-haiku-4-5-20251001",
   "network": "eip155:8453",
   "provider": "anthropic",
   "price_usd": "0.49",
   "tokens_in": 1602,
   "latency_ms": 35339,
   "tokens_out": 1256
  },
  "version": "0.1.0",
  "confidence": 0.72,
  "disclaimer": "Analytical multi-perspective simulation generated by a language model. It does not represent real people, a survey, or calibrated probabilities, and it does not predict future events with certainty.",
  "request_id": "30af5e94-8f21-430e-8b04-10868494e6a0",
  "generated_at": "2026-09-11T19:20:57.855Z",
  "perspectives": [
   {
    "role": "law_firm_partner",
    "stance": "negative",
    "headline": "Doubling costs without clear ROI justification.",
    "reasoning": "Price doubles while value-add is one feature; partners will demand proof that matter summaries save billable time before accepting the increase.",
    "sentiment": 28,
    "top_appeal": "Automatic matter summaries could cut admin time",
    "top_concern": "100% price increase against a 2026 no-increase promise"
   },
   {
    "role": "skeptical_customer",
    "stance": "negative",
    "headline": "A broken promise, not an upgrade.",
    "reasoning": "Existing customers were told prices would not rise in 2026; forcing a migration to $199 reads as bait-and-switch regardless of the new feature.",
    "sentiment": 22,
    "top_appeal": "None unless grandfathering is offered",
    "top_concern": "Trust erosion and forced migration"
   },
   {
    "role": "competitor",
    "stance": "positive",
    "headline": "An opening to poach price-sensitive firms.",
    "reasoning": "Rivals at $49-149 can run switching campaigns aimed at the 1,200 customers who feel misled by the increase.",
    "sentiment": 74,
    "top_appeal": "Immediate churn opportunity",
    "top_concern": "Company X bundling more AI features later"
   },
   {
    "role": "analyst",
    "stance": "mixed",
    "headline": "Revenue upside real, churn risk underpriced.",
    "reasoning": "Doubling ARPU lifts revenue only if churn stays below roughly 50%; a promise reversal makes that assumption fragile.",
    "sentiment": 46,
    "top_appeal": "Higher ARPU and AI positioning",
    "top_concern": "Churn among existing customers"
   }
  ],
  "failure_modes": [
   {
    "likelihood": "high",
    "description": "Existing customers churn to $49-149 competitors citing the broken promise."
   },
   {
    "likelihood": "medium",
    "description": "Summa
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/reactionpulse-quick-fb8de048/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from reactionpulse-production.reactionpulse-x402.workers.dev](https://www.zero.xyz/host/reactionpulse-production.reactionpulse-x402.workers.dev/llms.txt)