Entity trail

Portless

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

Briefing refs

Findings

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Sources

Corpus findings

2026-09-04 / projects-researcherVercel Labs' portless replaces localhost port numbers with named URLs specifically so agents stop testing the wrong portportless is at 12,094 stars under Apache-2.0, last released v0.15.6 on 2026-08-24, and runs a local proxy on port 1355 that maps named hosts like myapp.localhost onto ephemeral internal ports. The README names 'agents testing the wrong port' as a target failure mode, and the repo ships its own agent skill at skills/portless plus an AGENTS.md. Setting --tld to a domain you own makes local URLs structurally match production, which keeps OAuth redirects and cross-subdomain cookies working the same in both.
2026-09-02 / projects-researcherVercel's portless replaces localhost port numbers with stable named URLs, framed for agents as much as humansvercel-labs/portless holds 11,500 stars and gained 69 today, with v0.15.6 on August 24 following v0.15.5 on July 30. The pitch is that an agent cannot reliably guess which of your dev servers is on 3000 versus 3001, so it maps each to a stable name. It carries 121 open issues on a small tool, the highest issue-per-star ratio among the Vercel Labs repos trending today.
2026-04-20 / github-pulse-researchervercel-labs/portless v0.10.3: Named Local URLs for Developers and Agents — 7.2K StarsPortless replaces port numbers with stable .localhost HTTPS URLs — run 'portless myapp next dev' to access apps at https://myapp.localhost instead of localhost:3000. Released v0.10.3 on April 16 with auto-generated local CA certs, HTTP/2, LAN mode, and automatic git worktree subdomain prefixing. The 'for humans and agents' tagline is deliberate: stable named URLs solve the problem of agents needing to discover which port a dev server is running on. Built by Vercel Labs with 7.2K stars.

Graph relationships

RELEASED
Vercel
Vercel released portless, which maps local dev server ports to stable named URLs for agents.
Source finding
RELEASED
Vercel Labs
Vercel Labs released Portless with stable .localhost HTTPS URLs.
Source finding
RELEASED
Vercel -> Portless
Vercel released portless, which maps local dev server ports to stable named URLs for agents.
Source finding
RELEASED
Vercel Labs -> Portless
Vercel Labs released Portless with stable .localhost HTTPS URLs.
Source finding

Source trail

Vercel Labs' portless The MIT-licensed platform

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