API & Data Feed

Public accuracy endpoints anyone can verify, plus Ultimate-tier research access. All outputs are informational — not trade instructions.

Cite kit

Suggested sentence from the live snapshot (production URLs preferred):

According to Hound Trader’s published snapshot (methodology v1.2.0, as of 2026-08-26), directional accuracy on graded BUY and SELL signals at the 1D horizon was 19.4% (33,689 of 173,902). HOLD is graded separately and is not included in that headline. Source: https://houndtrader.com/accuracy.json. Not financial advice; see https://houndtrader.com/disclaimer. Past outcomes do not predict future results.

Full kit on /limitations.

Public (no auth) — for citation & verification

  • /accuracy.json

    Aggregate snapshot — prefer directionalAccuracy (BUY+SELL, 1D). Includes methodologyVersion and as-of.

  • /accuracy-sample.json

    Deterministic newest-first graded sample for spot checks. Optional ?limit=25.

  • /accuracy-ledger

    Human-readable HTML ledger of the same graded sample family.

  • /accuracy-feed.xml

    Atom feed: methodology changelog + latest snapshot as-of.

  • /llms.txt

    Citation rules for AI systems and crawlers.

  • /openapi.yaml

    OpenAPI 3: public accuracy surfaces plus Ultimate Research API paths.

  • /limitations

    Caveats and copy-paste cite kit.

MCP tool (agents)

Read-only Model Context Protocol server in the repo at tools/hound-accuracy-mcp. Defaults to https://houndtrader.com so local agents hit live EC2 data.

  • get_accuracy_snapshot → /accuracy.json
  • get_accuracy_sample → /accuracy-sample.json
  • get_citation_bundle → snapshot + suggested cite sentence

See the package README for Cursor / Claude Desktop config. No auth; public endpoints only.

Ultimate Research API (paid)

Ultimate subscribers create keys self-serve in Profile → API Access. Keys use the ht_live_ prefix. Send as Authorization: Bearer … or X-API-Key. Credits apply; responses include X-Credits-Remaining. Out of credits → HTTP 402.

Three authenticated research routes (HMAC not required when using a live API key):

  • GET /api/predictions — filtered prediction list (1 basic credit)
  • GET /api/single?symbol= — cached symbol research payload (1 basic credit)
  • POST /api/analysis/enhanced — run analysis (basic / enhanced / advanced credit cost)
curl -H "Authorization: Bearer ht_live_…" \
  "https://houndtrader.com/api/predictions?index=sp500&limit=10"

curl -H "Authorization: Bearer ht_live_…" \
  "https://houndtrader.com/api/single?symbol=AAPL"

curl -X POST -H "Authorization: Bearer ht_live_…" \
  -H "Content-Type: application/json" \
  -d '{"symbol":"AAPL","analysis_tier":"enhanced","ai_model":"labrador"}' \
  "https://houndtrader.com/api/analysis/enhanced"

Complete usage guide (auth, params, credits, status codes, Python): Profile → API Access. Contract: /openapi.yaml. Public accuracy endpoints above need no key. Do not share keys; rate limits apply per key.

Not investment advice

API responses are research and informational data. They do not constitute a recommendation to buy, sell, or hold any security. Hound Trader is not a registered investment adviser or broker-dealer. You are solely responsible for any use of API data, including automated systems. See limitations and the disclaimer.

Acceptable use

  • No redistribution or resale of raw paid feeds without written agreement
  • No misrepresentation of accuracy or performance of signals
  • When citing accuracy, include methodology version, horizon, and disclaimer
  • Display appropriate disclaimers if you surface our data to end users
  • Hound Trader software and paid API outputs are proprietary — Copyright LUKNAI LLC. All rights reserved.

See pricing, accuracy methodology, and public ledger.