Developer Documentation

Build TCT-compliant servers and clients. Reduce bandwidth by 83%, tokens by 86%.

Measured Performance

Based on 970+ production URLs across 3 sites:

83% bandwidth reduction – 103 KB → 17.7 KB average
86% token reduction – 13,900 → 1,960 tokens
90%+ skip rate – Via ETag conditional requests

Reference Implementations

Server-Side

WordPress Plugin (PHP):

GitHub: github.com/antunjurkovic-collab/trusted-collab-tunnel
License: GPL v2+

Cloudflare Worker (JavaScript):

GitHub: github.com/antunjurkovic-collab/trusted-collab-worker
License: MIT

Client-Side

Python Library:

pip install collab-tunnel

PyPI: pypi.org/project/collab-tunnel/
License: MIT

HTTP Headers Reference

M-URL Response Headers:

HTTP/2 200 OK
Content-Type: application/json
ETag: "sha256-abc123..."
Link: <https://example.com/article/>; rel="canonical"
Cache-Control: max-age=0, must-revalidate
Vary: Accept

HTML C-URL Header:

<link rel="alternate" type="application/json" href="/llm/">

Validation

Online Validator: llmpages.org/validator

Target Score: 10/10

IETF Specification

Draft: draft-jurkovikj-collab-tunnel-00
GitHub: github.com/antunjurkovic-collab/collab-tunnel-spec
Target: IETF 125 (March 2026)

Patent Notice

US Patent Application 63/895,763 (Filed October 8, 2025)

Free for website owners
Commercial licensing for large-scale operators

Community

GitHub: github.com/antunjurkovic-collab
Email: [email protected]

Developer Docs