ListSmith
MCP server for ListSmith — x402 listing grades ($0.10) and repairs ($0.50) on Base
Installation
Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).
list-smith-mcpclaude mcp add listsmith -e 'AGENT_PRIVATE_KEY=<your agent_private_key>' -e 'AGENT_KEY_FILE=<AGENT_KEY_FILE>' -e 'LIST_SMITH_URL=<LIST_SMITH_URL>' -e 'LIST_SMITH_GRADE_MAX_AMOUNT_UNITS=100000' -e 'LIST_SMITH_FIX_MAX_AMOUNT_UNITS=500000' -- uvx list-smith-mcp==0.1.2
{
"mcpServers": {
"listsmith": {
"command": "uvx",
"args": [
"list-smith-mcp==0.1.2"
],
"env": {
"AGENT_PRIVATE_KEY": "<your agent_private_key>",
"AGENT_KEY_FILE": "<AGENT_KEY_FILE>",
"LIST_SMITH_URL": "<LIST_SMITH_URL>",
"LIST_SMITH_GRADE_MAX_AMOUNT_UNITS": "100000",
"LIST_SMITH_FIX_MAX_AMOUNT_UNITS": "500000"
}
}
}
}
Variables d'environnement
AGENT_PRIVATE_KEYsecret EVM private key (0x...) of a wallet holding USDC on Base. Used locally to sign the x402 EIP-3009 authorization. For paid calls.AGENT_KEY_FILEPath to a file containing that key (alternative to AGENT_PRIVATE_KEY).LIST_SMITH_URLService base URL override (default: production).LIST_SMITH_GRADE_MAX_AMOUNT_UNITSSpend guard per grade call in USDC micro-units (default 100000 = $0.10, the known price). The client refuses to sign anything priced above it.LIST_SMITH_FIX_MAX_AMOUNT_UNITSSpend guard per fix call in USDC micro-units (default 500000 = $0.50, the known price). The client refuses to sign anything priced above it.
Documentation
Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.
Token Verdict — agent distribution wrappers
Native tool wrappers for Token Verdict, the pay-per-call token risk screen for AI agents ($0.02 USDC per call on Base, via the x402 protocol).
Token Verdict's buyers are other agents. These packages put the service on the shelves agents actually shop from, in the formats they call natively — payment handled by each agent's own wallet, with a spend guard at the known price:
| Package | Stack | What it gives an agent |
|---|---|---|
mcp/ | Python · MCP (stdio) | A token_verdict tool in any MCP host (Claude Desktop, Cursor, custom runtimes), paying via an operator-configured EVM signer. |
agentkit/ | TypeScript · Coinbase AgentKit | A token_verdict action in any AgentKit agent, paying from the agent's EvmWalletProvider. |
Both wrap the same real contract — POST /v1/verdict:
{ "address": "0x2821d96B5FC81aEC3763340b375a846a89A3Ec1b", "chain": "base" }
→ { token, verdict: SOLID|CAUTION|DANGER, score (0–100), signals (six
weighted market-structure signals), take, market }.
Both implement the standard x402 v2 exact-scheme flow (402 → sign an
EIP-3009 USDC authorization → retry with PAYMENT-SIGNATURE), the same
flow used for the service's live cataloging payment; the service settles
through its PayAI facilitator server-side. Neither package contains or
transmits any private key: keys stay in the operator's environment /
wallet provider, and every test payment is mocked — the test fixtures
are the real 402 challenge captured from production (2026-10-23)
and the service engine's own published example verdict.
Service source: QuincyGB/token-verdict
(discovery manifest at /.well-known/x402, agent docs at /skill.md).
MIT licensed.
Questions fréquentes
Qu'est-ce que ListSmith ?
MCP server for ListSmith — x402 listing grades ($0.10) and repairs ($0.50) on Base
Comment installer ListSmith ?
Il s'exécute sur votre machine. Dans Claude Code : claude mcp add listsmith -e 'AGENT_PRIVATE_KEY=<your agent_private_key>' -e 'AGENT_KEY_FILE=<AGENT_KEY_FILE>' -e 'LIST_SMITH_URL=<LIST_SMITH_URL>' -e 'LIST_SMITH_GRADE_MAX_AMOUNT_UNITS=100000' -e 'LIST_SMITH_FIX_MAX_AMOUNT_UNITS=500000' -- uvx list-smith-mcp==0.1.2. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.
Faut-il une clé API pour ListSmith ?
Oui. Il attend AGENT_PRIVATE_KEY, à renseigner dans sa configuration.
ListSmith est-il open source ?
Oui. Son code est sur GitHub sous licence MIT.
Qui maintient ListSmith ?
Il est publié par QuincyGB. AI.tn le référence sans le maintenir ni le recommander.
Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.