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FiberAgent Runtime Harness

Local MCP Gateway, In-Flight DLP Guardrails & 3ms Deterministic VCR Replay over a single loopback daemon (127.0.0.1:8356).

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1. Local MCP Gateway & HITL

Consolidates IDE MCP configs (.cursor, .mcp.json) behind one stateless loopback endpoint with idempotent execution and 1-Click Slack/TOTP pre-flight approval locks (HTTP 202).

Explore MCP Gateway

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2. Two-Track DLP Guardrails

Scrubs soft PII in-place during PRE_TRANSLATE (~0.006ms), hard-blocks 33+ credential patterns in POST_TRANSLATE, and severs over-budget streams mid-flight via StreamBreaker.

Inspect Guardrails

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3. 3ms Deterministic VCR

Freezes live LLM SSE streams and tool invocations into local JSON fixtures—enabling zero-cost offline pytest suites and synthetic latency emulation.

View VCR Specs

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4. Edge V8 Plane (plane.flare)

Offloads compiled WASM kernels and Pyodide sandboxes to self-hosted Cloudflare V8 Isolates with Error 1102 cutoffs and cryptographic execution receipts.

Edge V8 Architecture

Boot the Local Control Plane in 30 Seconds ​

bash
# Install via macOS Homebrew Tap (background daemon) or uv pip (Python 3.12+ SDK & CLI)
$ brew install dphilabs/fiber/fiber
# OR: uv pip install git+https://github.com/dphilabs/fiber.git

$ fiber init          # Provision workspace (~/.anchor) & local node keys
$ fiber connect all   # Non-invasively harvest IDE MCP configs into ~/.anchor/mcp.json
$ fiber console       # Launch Gateway daemon (:8356) & Console Studio UI (:8357)

Agent Runtime Harness — Local MCP Gateway, DLP Guardrails & Deterministic VCR

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