# Trace402

> Evidence-first Algorand x402 observability, transaction tracing, resource discovery, wallet trades and experimental paid APIs.

Runtime inspection network: Algorand MainNet. Labs require Algorand MainNet. Sources have incomplete coverage. Facilitator claims, local settlement receipts and independently indexed evidence are distinct. No Smart Score, investment ranking, subscriptions or notifications are offered.

Read live configuration and the exact x402 challenge before signing. A signature alone is not settlement evidence; keep the PAYMENT-RESPONSE receipt. Do not automatically retry an uncertain settlement. Wallet reads can require a paid cookie grant. Some wallet reads start existing collection; use refresh=read for cached evidence.

## Guides and machine-readable references

- [Developer guide](https://trace402.com/developers.md): Capabilities, payment flow, access and evidence limits.
- [OpenAPI](https://trace402.com/openapi.json): Supported read APIs, bounded watchlist snapshots and all Labs operations.
- [Capability catalog](https://trace402.com/api/v1/discovery): JSON page and operation inventory.
- [Runtime configuration](https://trace402.com/api/v1/config): Current network, inspection price and wallet payment enablement.
- [Labs catalog](https://trace402.com/api/v1/labs/catalog): Experimental endpoints, prices and current payment enablement.

## Product guides

- [Trace402](https://trace402.com/index.md): Explore Algorand x402 resources, payment activity, transaction verification evidence, wallet trades, and experimental paid APIs.
- [Explore services](https://trace402.com/explore.md): Discover Algorand x402 services in the facilitator Bazaar catalog.
- [Pulse](https://trace402.com/pulse.md): Compare partial x402 activity across Algorand, Base, Solana and Polygon, with source attribution and measurement windows.
- [Live settlements](https://trace402.com/live.md): See recent facilitator-reported settlements and successful Labs settlement receipts recorded by Trace402.
- [Observed resources](https://trace402.com/resources.md): Inspect observed x402 resources, payment activity, freshness, verification context and linked traces.
- [Smart Wallets](https://trace402.com/smart-wallets.md): Explore reconstructed Algorand DEX trades, wallet activity and asset flows, including Tinyman V2 swaps.
- [Candidate discovery](https://trace402.com/smart-wallets/discovery.md): Explore observed Algorand trading candidates and controlled wallet-analysis selection.
- [x402 Labs](https://trace402.com/labs.md): Experimental machine-callable APIs powered by Trace402, paid per request with Algorand MainNet USDC.

## Optional

- [Complete reference](https://trace402.com/llms-full.txt): Full product descriptions and API operation details.
- [Watchlist guide](https://trace402.com/watchlist.md): Browser-local resource lists; no subscriptions.
- [Discovery diagnostics](https://trace402.com/smart-wallets/discovery/analytics.md): Internal evidence diagnostics, not rankings.