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MARKET MONITOR / CATALOGUE Services 86,883 MCP listed 39,685 x402 47,214 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-26 · 3 sources
Task

Approvals

7 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

presign-guard x402 REST usage

Is this transaction, approval or signature safe to sign? Check it before your AI agent or wallet signs it: pre-sign verdict (green/orange/red + reason codes) for EVM transactions, token approvals and Permit/Permit2/EIP-3...

presign-guard.onrender.com Crypto & Payments 10 calls / 30d checked 2026-10-26
0.01 USDC per call per call

stall-row x402 REST usage

Fetch one web page and return its main content as clean Markdown with title and word count, extracted server-side. Private and loopback targets are refused. Use this when an agent needs to read a page inside a workflow w...

stall-row-production.up.railway.app Web & Scraping 8 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Saylor Innovations Guide Library x402 REST usage

CUDA, driver and Ollama compatibility - GPU support, model memory fit and proof inference uses the GPU

saylorinnovations.com AI Models & Inference 7 calls / 30d checked 2026-10-26
0.01 USDC per call per call

WalletTriage x402 REST usage

WalletTriage — real-time wallet risk check: dangerous ERC20 approvals cross-referenced with a live exploit threat feed. Returns risk_score (0-100), risk_level and actionable findings.

api.wallettriage.com Crypto & Payments 4 calls / 30d checked 2026-10-26
0.01 USDC per call per call

Revoke token approval tx x402 REST usage

Build the transaction that revokes a contract's permission over an ERC-20 token (approve(spender, 0)): target and calldata ready to sign in your wallet. Nothing is sent.

api.vextorium.com Crypto & Payments 4 calls / 30d checked 2026-10-26
0.003 USDC per call per call

ERC-20 Allowance x402 REST usage

How much a spender (router, Permit2, protocol) is approved to move from an owner's ERC-20 balance, with an unlimited-approval flag. Use to check approvals before a swap or to audit risky approvals.

bess-x402.onrender.com Security 2 calls / 30d checked 2026-10-26
0.002 USDC per call per call

Tanod chainpeek x402 REST usage

UTC time and latest Base block. Use when you need a clock.

tanod.dev Crypto & Payments 3 calls / 30d checked 2026-10-26
0.001 USDC per call per call

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