Signals API

Real-time AI and agent industry signals aggregated from Hacker News and Reddit

Signals API

Retrieve real-time signals about AI and agent-related discussions from public sources. The endpoint aggregates and filters content from Hacker News and Reddit, scoring each result by relevance to AI and agent topics.

Get signals

GET /api/signals

No authentication required. Returns a deduplicated, relevance-scored list of signals from Hacker News and Reddit.

The endpoint fetches data from both sources concurrently and applies keyword-based filtering to surface AI and agent-related content. Results are deduplicated by content similarity and sorted by upvote count.

Sources

Source	Description
Hacker News	Top 30 stories filtered for AI/agent keywords
Reddit	Hot posts from artificial, LocalLLaMA, MachineLearning, singularity, and OpenAI subreddits (up to 8 posts per subreddit)

Keyword filtering

Signals are included only when their title or body matches at least one keyword from the relevance set. The following keywords are used for filtering and relevance scoring:

Hacker News keywords: ai, agent, llm, gpt, claude, openai, anthropic, model, chatbot, automation, autonomous, mcp, langchain, tool, api

Reddit keywords: ai agent, llm, gpt, claude, autonomous, agent framework, mcp, tool use, ai assistant, langchain, openai, anthropic, memory, rag, embedding

Relevance scoring

Each signal is assigned a relevance level based on keyword match count and engagement:

Relevance	Condition
high	Two or more keyword matches, or upvotes exceed the engagement threshold (300 for Hacker News, 500 for Reddit)
medium	Exactly one keyword match
low	Matched but below medium threshold

Response

{
  "generatedAt": "2026-03-27T15:19:00.000Z",
  "sources": ["hacker-news", "reddit"],
  "total": 15,
  "signals": [
    {
      "id": "hn-12345678",
      "platform": "hacker-news",
      "author": "username",
      "content": "Show HN: An open-source agent framework for autonomous AI workflows",
      "url": "https://news.ycombinator.com/item?id=12345678",
      "upvotes": 482,
      "comments": 137,
      "date": "2026-03-27",
      "relevance": "high",
      "tags": ["agent", "ai", "autonomous"]
    },
    {
      "id": "reddit-abc123",
      "platform": "reddit",
      "author": "u/example_user",
      "content": "New LLM benchmarks show significant improvements in tool use capabilities",
      "url": "https://reddit.com/r/LocalLLaMA/comments/abc123/new_llm_benchmarks/",
      "upvotes": 312,
      "comments": 89,
      "date": "2026-03-27",
      "relevance": "high",
      "tags": ["llm", "tool use"]
    }
  ]
}

Top-level fields

Field	Type	Description
generatedAt	string	ISO 8601 timestamp when the response was generated
sources	array of strings	Data sources included in the response. Currently ["hacker-news", "reddit"].
total	number	Total number of signals returned
signals	array	List of signal objects, sorted by upvotes descending. Maximum 20 items.

Signal object fields

Field	Type	Description
id	string	Unique signal identifier. Prefixed with the platform name (for example, hn-12345678 or reddit-abc123).
platform	string	Source platform. One of reddit, twitter, hacker-news, or discord. Currently only reddit and hacker-news return results.
author	string	Author name. Reddit authors are prefixed with u/.
content	string	Signal title, optionally followed by a truncated body excerpt (up to 150–200 characters).
url	string	Direct URL to the original post
upvotes	number	Upvote or point count from the source platform
comments	number	Comment count from the source platform
date	string	Publication date in YYYY-MM-DD format
relevance	string	Relevance score. One of high, medium, or low.
tags	array of strings	Matched keywords from the relevance filter. Maximum 3 tags per signal.

Deduplication

Signals are deduplicated by comparing the first 80 characters of their content (case-insensitive). When two signals have the same content prefix, the first one encountered is kept.

Errors

Code	Description
200	Signals retrieved successfully. The signals array may be empty if no matching content was found.

When an individual source fails to respond (for example, due to a timeout), the endpoint returns results from the remaining sources without error. Each source request has an 8-second timeout.