Fiber Dev Log 2026-09-03

[chenyukang]

Updates

Following the v0.9.0 release, our development is currently focused on release maintenance, SDK ergonomics, expansive documentation for new builders, and the next batch of new protocol capabilities to support multi-tenant Hosted LSP mode.

Outside the main repository, fiber-pay shipped v0.3.2; docs site expanded its coverage to include games, mobile/FFI, browser extensions, and advanced tutorials. Ongoing work is around Hosted LSP, liquidity Loop In/Out, QUIC transport.

Features

fiber-js default configuration helper

Applications using fiber-js can now start from bundled mainnet/testnet defaults, instead of hand-maintaining a full config. The helper also adds Jest coverage, ensuring SDK-facing config changes are validated early in development.

• Add default config helper for fiber-js

fiber-pay v0.3.2

The payment demo and SDK have been updated to v0.3.2 on August 24, 2026. This release aligns its Biscuit policy table with FNN v0.9.0 and publishes a version bump for downstream testing.

• fiber-pay v0.3.2 release
• Align Biscuit policy table with FNN v0.9.0
• Bump version to 0.3.2

Expanded documentation for application builders

Fiber’s documentation site has been enriched to give builders more entry points beyond the basic node walkthroughs. Additions include advanced interactive tutorials, a gaming section, clearer Mobile & FFI framing, and a Browser Extension section.

• Add advanced Fiber interactive tutorials
• Add Gaming section with staked competitive game design pattern
• Retitle FFI section to "Mobile & FFI" and add Browser Extension section
• Fix observed 404 routes

Improvements & Fixes

Dependency and CKB-type refresh

A dependency refresh landed across Rust libraries and CKB integration crates, including rand, strum, log, either, tentacle, tentacle-multiaddr, CKB chain/spec/resource/type/json-RPC crates, and OpenSSL in test builders.

• Upgrade rand from 0.8.5 to 0.9
• Upgrade strum
• Bump tentacle to 0.7.7
• Bump tentacle-multiaddr to 0.3.8
• Recent merged Fiber PRs, August 21 to September 2

Roadmap and onboarding accuracy

Fiber's current HTLC model is now distinguished from future PTLC work, and advanced liquidity management is properly documented as active, though unreleased.

• Reconcile README roadmap with current state

In Pipeline

Hosted LSP for mobile and intermittently connected wallets

The Hosted LSP draft remains active development. The design focuses on tenant-isolated storage/RPC, a public Trampoline presence, private hosted channels, buffered delivery for offline clients, and a remote-signer boundary that still needs more production-readiness work.

• Design: Multi-tenant Hosted LSP support
• WIP Hosted LSP implementation

Liquidity Loop In and Loop Out

A draft implementation now covers persisted liquidity assets, quotes, swaps, provider controls, RPCs, and restart-safe actor orchestration. Follow-up work will include: UDT propagation/E2E coverage, and a broader refund/recovery matrix.

• Add liquidity management Loop In and Loop Out
• Design: Fiber liquidity management milestones

QUIC and multi-address networking

Networking work is under review in two phases: first, multiple listen-address configuration, followed by initial QUIC transport support over Tentacle 0.7.7 to allow nodes to listen to TCP and QUIC addresses simultaneously.

• Support listening on multiple addresses
• Initial QUIC support