# Beacon

> Updated 2026-09-24 · type: tool · category: mcp-agents · status: active · rev 1

Beacon is a local-first memory layer that captures coding-agent sessions across Claude Code, Cursor and Codex and serves reusable knowledge over MCP or Skills.

- Open source: yes (MIT)
- Self-hostable: yes
- Pricing model: free
- Best for: A team using more than one coding harness (Claude Code, Cursor, Codex, OpenCode) that wants a shared, owned memory of agent sessions — captured locally and served back to any harness over MCP or Agent Skills — instead of knowledge trapped per-tool.
- Last verified: 2026-09-24

- **Canonical:** https://gtmstacker.com/registry/tool/beacon/
- **Source:** [Asymptote-Labs · GitHub](https://github.com/Asymptote-Labs/agent-beacon)
- **Tags:** mcp-agents, ai-infrastructure, self-hostable, memory, cross-harness, local-first
- **Repository:** https://github.com/Asymptote-Labs/agent-beacon

## Is Beacon open source?

Yes, Beacon is open source under the MIT license.

## How much does Beacon cost?

Beacon is free to use.

## Can I self-host Beacon?

Yes, Beacon can be self-hosted (the source is available under the MIT license).


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Beacon is an MIT-licensed, local-first memory layer that captures AI-coding-agent sessions across harnesses — Claude Code, Cursor, Codex, OpenCode and others — and serves reusable knowledge over MCP or Agent Skills. It has 1,493 stars, is actively releasing (v1.3.x this week), and self-hosts. Its claim to grade runs into reusable skills is the tool's own, not a verified result.

## Provenance

- MIT (OSI-open); 1,493 stars, created 2026-05-12, last push 2026-09-24 (v1.3.x actively releasing this week); a cross-harness, local-first memory layer that captures AI-coding-agent sessions (Claude Code, Cursor, Codex, OpenCode and others) and serves reusable knowledge over MCP or Agent Skills; self-hostable/local-first (WebFetch 2026-09-24).
- Surfaced via the 2026-09-24 X viral-posts brief (cross-corroboration; 101 faves / 83 bookmarks) — the source tweet's hype hook is not reflected in the repo.
- Anti-hype note: marketing framing stripped — described factually as capturing sessions and serving reusable knowledge over MCP/Skills, not as "self-improving." The "grades runs into reusable skills" quality is the tool's claim, not a fact.
- Curated from the GTM Stacker signal registry (2026-09-24 pass); license/facts independently verified 2026-09-24.

## Why it matters for a GTM stack

Teams rarely standardize on one coding harness — some people use Claude Code, some Cursor, some Codex — and the useful context each agent builds up stays trapped in that tool. Beacon's angle is a shared, owned memory layer: capture sessions across harnesses, keep them local-first, and serve the accumulated knowledge back to any of them over MCP or Agent Skills. For a team building agent-driven internal tooling, that cross-harness, owned memory is the difference between per-tool amnesia and a shared knowledge base. The honest read: 1,493 stars and active releases make this the most-validated tool in this batch, but the specific claim that it grades runs into reusable skills is the tool's own and unproven — and it surfaced via a viral tweet whose hype hook the repo does not back up. Adopt it for the shared-memory mechanics; verify the "reusable skills" quality yourself.