Mycelia Signal Documentation

Cryptographically signed price attestations over Lightning (L402) and USDC on Base (x402). 66 endpoints across crypto, stablecoin pegs, FX, economic indicators, commodities, and market indices (MSVI, MSXI, MSSI). No API keys. No accounts. One HTTP call.

Start here
5 minutes

Quick Start

Get your first signed price attestation with a single curl command. Includes both L402 and x402 examples.
Guide

Agent Payment Setup

Configure x402 (USDC) or L402 (Lightning) payment for your AI agent. Step-by-step for ElizaOS, LangChain, and generic HTTP clients.
Guide

Signature Verification

Verify attestation signatures in Python, JavaScript, and Rust. Reconstruct the canonical payload and validate the proof.
Integration Guides
Protocol

x402 — USDC on Base

Pay with USDC on Base L2. Ideal for AI agents and EVM-native applications. Ed25519 signatures.
Protocol

L402 — Lightning Network

Pay with Lightning sats. Native Bitcoin integration for wallets and Lightning-enabled applications. secp256k1 ECDSA signatures.
Guide

DLC Oracle

Schnorr-signed threshold and numeric attestations for Discreet Log Contracts. Trustless Bitcoin L1 settlement. L402 and x402 payment rails.
Guide

MSVI Volatility Index

Five-component signed volatility index for BTC and ETH. Realized vol, implied vol, term structure, funding rate, and put/call ratio — combined into a cryptographically attested 0-100 index.
New

Market Indices

Three signed composite indices: MSVI (volatility 0–100), MSXI (sentiment −100 to +100), MSSI (market stress 0–100). Use together to identify market regimes — orderly bull, euphoria, accumulation, or panic.
Free

Embed Widgets

Embed live MSVI, MSXI, and MSSI on any website. One script tag each, no API key, auto-refreshes every 5 minutes. Free delayed data.
Protocol

MCP Server

Model Context Protocol integration for AI agents. Query oracle data natively from Claude, GPT, and other LLMs.
Plugin

LangChain Plugin

Native LangChain tool for Python AI pipelines. Free preview mode included — no wallet needed to get started.
Plugin

ElizaOS Plugin ↗

Native ElizaOS integration. Agents respond to natural language price queries and pay automatically via x402 or L402.
Security
Architecture

The Third Rail Oracle

How to run Mycelia Signal as an independent cross-check alongside your existing EVM price feed. Stops oracle manipulation attacks without replacing your infrastructure. Deployable in days.
Reference
Reference

Endpoints & Pairs

All 66 endpoints — crypto pairs, stablecoin pegs, market indices (MSVI/MSXI/MSSI), FX rates, economic indicators, and commodities. URLs, pricing, source counts, and aggregation methods.
Reference

Response Schema

Complete JSON response format with field definitions for each protocol.
Reference

Canonical Format

The v1 pipe-delimited canonical payload specification. How to reconstruct for signature verification.
Reference

Error Codes

HTTP status codes, error payloads, and troubleshooting for common integration issues.
Reference

Source Methodology

Which exchanges and data providers feed each pair. Minimum thresholds, USDT normalization, and safety mechanisms.
Reference

Public Keys

All signing keys in one place. secp256k1, Ed25519, and Schnorr public keys for each protocol.
Reference

OpenAPI Spec ↗

OpenAPI 3.0 specification for all endpoints. Import directly into Postman, Insomnia, or any API tool.