# Second Opinion MCP server

Adversarial verification for AI agents - pay an independent skeptic per verdict in USDC via x402.

## Links
- Registry page: https://www.getdrio.com/mcp/com-secondopinionx402-second-opinion
- Website: https://secondopinionx402.com

## Install
- Endpoint: https://secondopinionx402.com/mcp
- Auth: Not captured

## Setup notes
- Remote endpoint: https://secondopinionx402.com/mcp

## Tools
- second_opinion_quick - Independent reasoning-only check of a claim ($0.03, ~20s, no web research). Use for logic, internal consistency, and stable established knowledge (definitions, architectures, history, maths). Returns refuted/supported/inconclusive with calibrated confidence; honestly escalates to second_opinion_verify when the claim needs current-world research. Without a payment argument it returns an exact pay-per-call quote (no account, no API key). Endpoint: https://secondopinionx402.com/mcp
- second_opinion_verify - Independent adversarial verification with live web research ($0.20, ~60s). A separate AI attempts to refute the claim using current sources and returns a verdict with citations. Use before irreversible commitments that depend on current-world facts. Without a payment argument it returns an exact pay-per-call quote (no account, no API key). Endpoint: https://secondopinionx402.com/mcp
- second_opinion_panel - Three independent adversarial verifiers attack the claim through different lenses (evidence, logic, currency) and vote ($0.75, ~90s). Use for high-stakes or contested claims where a single check is not enough. Without a payment argument it returns an exact pay-per-call quote (no account, no API key). Endpoint: https://secondopinionx402.com/mcp
- second_opinion_try - FREE TRIAL — no wallet, no payment, no account: the same quick reasoning-only check as second_opinion_quick, 3/day per caller (claims up to 500 chars; global daily cap applies). The trial verdict is unsigned — paid verdicts add an offline-verifiable Ed25519 receipt and live web research on the verify/panel tiers. Try the product here; use the paid tools for real work. Endpoint: https://secondopinionx402.com/mcp
- second_opinion_result - Fetch the verdict for a paid async job — polling is FREE and the verdict is already paid for. Returns status running|done|failed, with the full verdict when done. Endpoint: https://secondopinionx402.com/mcp
- second_opinion_pricing - FREE: current tiers, prices, and exact on-chain payment requirements (accepts) for every rail — Algorand, Base, Solana. Use this to pre-build a payment, or to discover what a verification will cost before committing. Endpoint: https://secondopinionx402.com/mcp

## Resources
Not captured

## Prompts
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## Metadata
- Owner: com.secondopinionx402
- Version: 0.2.0
- Runtime: Streamable Http
- Transports: HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: Jul 26, 2026
- Source: https://registry.modelcontextprotocol.io