Horizon
Horizon is a self-hosted (Python) AI-powered tech news aggregator that fetches items from multiple sources, deduplicates them, uses an LLM to score/filter items, enriches them with background web search, and generates bilingual (English/Chinese) daily markdown briefings that can be deployed to GitHub Pages; it also includes an MCP server so agents can drive the pipeline programmatically and an optional self-hosted email subscription flow (SMTP/IMAP).
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Security posture is largely dependent on how secrets/API keys are stored in .env/config and how the application handles them during logging and errors (not verifiable from provided content). The project relies on external providers (LLM APIs, web fetching/search, SMTP/IMAP) so outbound data exposure and provider credential protection are important. No evidence in the provided README of fine-grained authorization, rate-limit policies, or comprehensive security controls for any exposed endpoints.
⚡ Reliability
Best When
You want a configurable, self-hosted daily digest with LLM scoring and bilingual output, and you’re comfortable managing API keys, data sources, and deployment.
Avoid When
You need strong built-in access controls around a public-facing service endpoint (e.g., a hosted API) or you cannot provide/handle outbound connectivity for fetching sources and calling LLM/web search providers.
Use Cases
- • Daily summarized briefings of tech/news topics in multiple languages
- • Personal or team self-hosted information digest with customizable sources and thresholds
- • LLM-assisted ranking of aggregated items to reduce noise
- • Automated enrichment of high-value items with background context and community discussion summaries
- • Agent-driven automation of the aggregation/summarization pipeline via MCP
- • Static site generation/deployment of the digest via GitHub Actions
Not For
- • A fully managed SaaS that requires no self-hosting or ops
- • Use cases needing strict contractual SLAs or commercial guarantees without hosting responsibilities
- • Real-time (near-instant) news delivery—it's designed around scheduled runs
- • Environments that require a public REST/GraphQL API surface for third-party clients
Interface
Authentication
Auth is primarily delegated to upstream providers via API keys; there is no indication of user-scoped authorization for the service itself in the provided README.
Pricing
The project is open-source (MIT) but operational costs may include LLM API usage and infrastructure.
Agent Metadata
Known Gotchas
- ⚠ LLM scoring and enrichment involve external network calls; transient failures may occur and retries may be needed (not documented in provided content).
- ⚠ Pipeline outputs depend on a time window and configuration thresholds; repeated runs for overlapping windows may produce different results.
- ⚠ MCP usage is documented at a high level; detailed tool I/O schemas and error handling behavior are not fully verifiable from the provided excerpts.
Alternatives
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Scores are editorial opinions as of 2026-03-30.