# openclaw / evm-lab (onchain-risk-oracle at oracle.evebrief.org)

> onchain-risk-oracle is a pay-per-task A2A agent that checks an EVM address (eth, base, bsc, arb, op, polygon) against a curated rug-pull feed and returns a none / low / high / critical risk verdict with labels, reasons, evidence and sources. One skill, one JSON-RPC endpoint at https://oracle.evebrief.org/, gated by x402 v2 payment of 0.01 RLUSD on the XRP Ledger mainnet through the t54 facilitator. The operator name on the card is "openclaw / evm-lab"; the apex domain evebrief.org hosts EveBrief, a waitlist-stage market-briefing product with no API. This file was generated by API Evangelist from the provider's public surface on 2026-09-19; the provider publishes no llms.txt of its own (https://evebrief.org/llms.txt and https://oracle.evebrief.org/llms.txt both 404).

## Agent surface

- [A2A Agent Card](https://oracle.evebrief.org/.well-known/agent-card.json): protocolVersion 0.3.0, JSONRPC transport, one skill (onchain-risk-check) with inputSchema and outputSchema; also served at the legacy /.well-known/agent.json
- [JSON-RPC endpoint](https://oracle.evebrief.org/): POST; returns HTTP 402 with x402 PaymentRequirements until a PAYMENT-SIGNATURE header is supplied
- [x402 resource-server manifest](https://oracle.evebrief.org/.well-known/x402): exact scheme, network xrpl:0, asset RLUSD, amount 0.01, facilitator https://xrpl-facilitator-mainnet.t54.ai, maxTimeoutSeconds 600
- [Health](https://oracle.evebrief.org/healthz): status, payment_mode, feed_records, feed_latest_ts (free)

## Specs

- [OpenAPI 3.1.0 (provider-hosted)](https://oracle.evebrief.org/openapi.json): FastAPI-generated; 5 routes, no schemas, no servers[]
- [OpenAPI 3.1.0 (catalog copy)](https://raw.githubusercontent.com/api-evangelist/evebrief-org/refs/heads/main/openapi/evebrief-org-openapi.json)
- [Agent card (catalog copy)](https://raw.githubusercontent.com/api-evangelist/evebrief-org/refs/heads/main/a2a/evebrief-org-agent-card.json)

## Docs

- [Swagger UI](https://oracle.evebrief.org/docs)
- [ReDoc](https://oracle.evebrief.org/redoc)
- [EveBrief website](https://evebrief.org/): the operator's market-briefing product (no API)
- [EveBrief blog](https://evebrief.org/blog/)

## How to call it

1. Read the card; the only skill is onchain-risk-check. Input: address (required, ^0x[0-9a-fA-F]{40}$), chain (optional enum), deep (bool), fork (bool, with deep).
2. POST a JSON-RPC message to https://oracle.evebrief.org/ carrying the address as a JSON DataPart or plain text.
3. Expect HTTP 402. Read PaymentRequirements from the PAYMENT-REQUIRED header or body; settle 0.01 RLUSD on xrpl:0 to the payTo address through the facilitator within 600 seconds; retry with PAYMENT-SIGNATURE.
4. The result is the outputSchema object: address, risk, labels[], reasons[], evidence, live_tier, feed, sources[], disclaimer.

## Not published

- No MCP server, no GraphQL, no REST projection of the skill, no SDKs, no CLI
- No security.txt, no OAuth/OIDC discovery, no API catalog, no APIs.json
- No terms of service, privacy policy, status page, changelog or rate-limit documentation on either host

## Catalog artifacts (API Evangelist)

- [apis.yml](https://raw.githubusercontent.com/api-evangelist/evebrief-org/refs/heads/main/apis.yml)
- [A2A manifest and grade](https://raw.githubusercontent.com/api-evangelist/evebrief-org/refs/heads/main/a2a/evebrief-org-a2a.yml)
- [Conformance](https://raw.githubusercontent.com/api-evangelist/evebrief-org/refs/heads/main/conformance/evebrief-org-conformance.yml)
- [Conventions](https://raw.githubusercontent.com/api-evangelist/evebrief-org/refs/heads/main/conventions/evebrief-org-conventions.yml)
- [Plans](https://raw.githubusercontent.com/api-evangelist/evebrief-org/refs/heads/main/plans/evebrief-org-plans-pricing.yml)
- [Agent skill](https://raw.githubusercontent.com/api-evangelist/evebrief-org/refs/heads/main/skills/evebrief-org-onchain-risk-check.md)