# AnswerPool

> Computed research and technology intelligence for AI agents, derived only from
> rights-reviewed open data (OpenAlex, CC0). Strict JSON, grounded confidence,
> public provenance. Pay per call with x402 (USDC) or buy prepaid credits by card
> (POST /v1/credits/checkout); cached answers are instant.

## Endpoints

- [sec_events](https://answerpool.io/v1/sec/events): List flagged SEC EDGAR events (15-min refresh) — returns 8-K items, Form 4 insider buys/sells with USD size and buy clusters, Form D raises, each with ticker, flags and salience score. Use instead of polling EDGAR. Price $0.005/call.
  When to use: You need parsed, flagged corporate events from EDGAR for one company or the whole market, in one call, without maintaining a poller and XML parsers.
  When not to use: You need full filing text, historical archives before we started indexing, or legal advice.
  Examples: ticker=JEF; flags=insider_buy_cluster; forms=D&since=2026-08-29
- [sec_company](https://answerpool.io/v1/sec/company): Get a one-call SEC snapshot by ticker or CIK — returns identity, recent filings, indexed events, insider activity and key XBRL facts (revenue, income, cash, 8 periods). Use before deeper diligence. Price $0.02/call.
  When to use: You have a ticker or CIK and need cited fundamentals plus recent events in one call.
  When not to use: You need private companies, non-US issuers, or real-time prices.
  Examples: ticker=NVDA; cik=0000320193; ticker=JEF
- [reg_rules](https://answerpool.io/v1/regs/rules): Track US federal rules by term or agency — returns Federal Register rules and proposed rules with docket/RIN/CFR ids, effective and comment-close dates, deadline flags and day counts. Use instead of polling federalregister.gov. Price $0.005/call.
  When to use: You need current federal rulemaking activity for a topic or agency — new proposals, imminent effective dates, closing comment windows — as structured JSON in one call.
  When not to use: You need full rule text analysis, public-comment contents (regulations.gov), state-level regulation, or legal advice.
  Examples: term=artificial intelligence; agency=securities-and-exchange-commission&significant_only=true; types=proposed_rule&since=2026-08-01
- [funding_signals](https://answerpool.io/v1/funding/signals): Get the US federal money trail for a technology term — returns USAspending obligations by fiscal year with 3y growth, top recipients, NIH grant counts and recent projects, plus flags. Use instead of joining two federal APIs. Price $0.02/call.
  When to use: You need federal funding momentum, recipients, or NIH activity for a technology in one structured call.
  When not to use: You need a full census of a technology (keyword-matched only), classified or state spending, or investment advice.
  Examples: term=quantum computing; term=photonics&years=6; term=mRNA vaccines
- [technology_momentum](https://answerpool.io/v1/technology/momentum): Score research momentum for any technology from OpenAlex (CC0) — returns momentum_score, acceleration_score, trend_label, growth series, leading institutions and researchers, key works, confidence and provenance. Use before betting a field is accelerating. Price $0.05/call.
  When to use: You need a quantified, source-cited answer to "is this research or technology field accelerating, growing, stable, or declining?" for one named topic, with growth ratios, leaders, and recent influential works, in one call.
  When not to use: You need one paper's prospects, a literature review, raw bibliographic records, or a topic OpenAlex does not model (brand names, very new jargon) — the response will report a weak match.
  Examples: photonic computing; CRISPR gene editing; solid-state batteries; large language model agents; perovskite solar cells
- [technology_emerging](https://answerpool.io/v1/technology/emerging): Rank the fastest-accelerating research topics across ~4,500 OpenAlex topics, weekly — returns rank, momentum z-score, growth, acceleration and citation-quality growth per topic, filterable by field. Use to find what is accelerating. Price $0.05/call.
  When to use: You need a ranked, evidence-backed list of accelerating fields (optionally within one discipline) to seed scouting, diligence, or content, and would otherwise scan topic by topic.
  When not to use: You already know the topic and want a judgment with leaders and works — use technology_momentum; or you want one topic's numbers — use technology_lookup.
  Examples: 25; limit=25&field=Engineering; emerging_only=true
- [technology_lookup](https://answerpool.io/v1/technology/lookup): Look up statistical research momentum for one OpenAlex topic (free) — returns rank among ~4,500 topics, momentum z-score, 1y/3y/5y growth, acceleration and per-year counts. Use to screen a field before paying for a full judgment. Free (rate-limited).
  When to use: You have a topic and want its numbers now, or you are screening many topics.
  When not to use: You need leaders, influential works and a reasoned judgment — use technology_momentum.
  Examples: photonic computing; T10299; perovskite solar cells

## Machine-readable

- [OpenAPI](https://answerpool.io/openapi.json)
- [Catalog with JSON schemas](https://answerpool.io/v1/workloads)
- [x402 resource manifest](https://answerpool.io/.well-known/x402.json)
- Terms: https://answerpool.io/terms (analytical signals, not advice; liability capped at price paid; failed calls never charged)
- Privacy: https://answerpool.io/privacy (no tracking; minimal operational logs; card data handled only by Stripe)
- Add to Claude (one click): https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=AnswerPool&connectorUrl=https%3A%2F%2Fanswerpool.io%2Fmcp
- MCP server (Streamable HTTP): https://answerpool.io/mcp — free tools list_products, credit_balance, technology_lookup; paid tools take Authorization: Bearer <credit key> (401 with purchase instructions without one)
- [Agent card](https://answerpool.io/.well-known/agent-card.json)
- [Health](https://answerpool.io/v1/health)

## Payment

- x402: GET the endpoint; receive 402 + PAYMENT-REQUIRED; retry with PAYMENT-SIGNATURE. Network eip155:8453, asset USDC.
- stripe_credits: POST /v1/credits/checkout?pack=starter|builder|pro -> pay by card at the Stripe URL -> claim the API key once at /v1/credits/claim -> send 'Authorization: Bearer <key>' on paid endpoints; per-call debit at the listed price, errors auto-refunded.

## Data rights

Only CC0, US federal public domain, or owned data. No web scraping. Provenance on every result.