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chainverdict

by alexanderbalieu-connections
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JavaScript
Remote

ChainVerdict — chainverdict.xyz

Checks an autonomous agent runs before it moves money or trusts a counterparty: token safety verdicts and wallet risk profiles on Base, on-chain payment verification, financial-identifier validation, and live domain security posture.

Every call is paid per request in USDC on Base over the x402 protocol — no accounts, no API keys, no signup. Every response carries an evidence record saying what was checked, how fresh it is and what it does not establish, and is Ed25519-signed. No LLM inference anywhere: every answer is a deterministic computation or a live read of external state, so the same input returns the same answer forever.

MCP server

ChainVerdict is a remote MCP (Model Context Protocol) server, built on the official @modelcontextprotocol/sdk and served over Streamable HTTP at:

https://chainverdict.xyz/mcp

It is published in the official MCP registry as xyz.chainverdict/chainverdict.

  • initialize and tools/list are free, so registries and clients can index the server without paying.

  • tools/call is x402-paid at the price of the route behind the tool — except payment_info, which is free.

  • 20 MCP tools, all read-only and idempotent, annotated with readOnlyHint / destructiveHint / idempotentHint / openWorldHint.

  • No MCP resources or prompts are exposed; this server is tools-only.

Tool descriptions interpolate the live price from the same map the payment middleware charges from, so tools/list can never advertise a rate that is not the rate. test/mcp-parity.test.js fails the build if a tool exists for a route that is no longer sold, or if a sold route has no tool.

Tools

Tool

What it answers

payment_info

Free. How x402 payment works, the price of every tool, where payments settle.

token_verdict

Is this ERC-20 on Base a scam, a honeypot, or safe to hold?

wallet_dossier

Wallet risk profile for a Base address before you pay it.

verify_payment

Decode and confirm an on-chain payment on Base.

verify_token

Resolve a symbol or address to the canonical Base token.

validate_iban validate_vat validate_bic validate_lei validate_isin

Deterministic check-digit and format validation.

security_email security_tls security_typosquat

SPF/DMARC/DKIM posture, live TLS probe, brand look-alike analysis.

data_gas data_block data_token_supply data_token_activity data_portfolio

Live Base chain reads.

html_to_markdown text_diff

Document utilities.

POST /v1/batch/validate is HTTP-only by design: 500 identifiers do not belong in a tool-call argument.

Related MCP server: crest-verify

HTTP rate card

Every endpoint answers an unpaid request with a 402 quote.

Route

Price

GET /v1/token/verdict/*

$0.01

GET /v1/wallet/dossier/*

$0.01

GET /v1/validate/iban/*

$0.001

GET /v1/validate/vat/*

$0.001

GET /v1/validate/bic/*

$0.001

POST /v1/doc/html-to-markdown

$0.002

POST /v1/doc/diff

$0.002

GET /v1/verify/payment/*

$0.02

GET /v1/verify/token/*

$0.005

GET /v1/validate/lei/*

$0.002

GET /v1/validate/isin/*

$0.001

POST /v1/batch/validate

$0.10

GET /v1/security/email/*

$0.01

GET /v1/security/tls/*

$0.01

GET /v1/security/typosquat/*

$0.005

GET /v1/data/gas

$0.002

GET /v1/data/block

$0.001

GET /v1/data/supply/*

$0.003

GET /v1/data/activity/*

$0.005

GET /v1/data/portfolio/*

$0.004

Free to read before you pay for anything: / (discovery), /health, /openapi.json, /llms.txt, /v1/methodology, /.well-known/x402.json.

The whole portfolio, machine-readable: https://pulse.chainverdict.xyz/.well-known/portfolio.json

Local dev

npm ci
X402_ENABLED=false npm start   # free mode, no payments
npm test                       # 34 tests

Ops

Stateless. No database, no cron, no maintained data set. Sources are pure arithmetic over public specifications plus live Base RPC.

Limitations

These are informational signals. None is a compliance control, none discharges a legal obligation, and none is regulated financial, legal or compliance advice. A valid signature proves a response came from this service unaltered — not that the answer is correct. A signed wrong answer is still wrong, and still signed.

Operated by Alexander Balieu, independent professional established in Luxembourg.

Licence

MIT. See LICENSE.

This server cannot be installed

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