permission-guard

format-converter

Converts data between JSON, CSV, XML, YAML, Markdown, HTML and TOML instantly. Handles nested JSON flattening with dot-notation. Pure math, zero dependencies. Pay $0.001 USDC per conversion via x402 on Base network.

agent-audit-trail

Creates a tamper-evident, HMAC-signed log entry for every agent action. No database, no infrastructure — just a cryptographically verifiable receipt you store yourself. Built for HIPAA, SOC2, and any compliance requirement that asks "what did your agent do and when?" $0.001/log via x402 on Base. MCP tool name: log_agent_action

card-registry

Hosts agent-card.json files for businesses who can't serve them from their own domain. Cards are permanently discoverable by any A2A agent at a stable URL. Pay $0.001 USDC per month per card via x402 on Base network.

the-prospector

Generates valid A2A agent-card.json files for any website from stable structured sources. Reads llms.txt, robots.txt, sitemap.xml and well-known files. Never scrapes. Pay $0.01 USDC per card via x402 on Base network.

prompt-injection-detector

Prompt Injection Detector is a stateless security microservice built for the agent economy. Before your agent acts on any input — whether from a user, an email, a document, or another agent — run it through this scanner first. Detects: jailbreak attempts, instruction overrides, role-play manipulation, goal hijacking (OWASP ASI01), tool misuse patterns (OWASP ASI02), hidden instructions embedded in data, and indirect injection via external content. Returns a confidence score, severity rating, specific patterns detected, and a clear recommendation — block, warn, or pass. Pay per scan via x402 protocol. USDC on Base. No API keys. No subscriptions. No human in the loop. Agents call it directly. MCP tool name: scan_for_injection

hallucination-detector

Hallucination Detector — scores AI-generated output for hallucination risk. Detects fabricated citations, entity confusion, and overconfident absolutes. Returns a 0-1 risk score with signals so you know what to verify before trusting the output. $0.001/req via x402 on Base.

NodeAPI

Machine-native GIS processing API for AI agents and developers. Convert, reproject, validate, repair, buffer, clip, dissolve, and tile vector geodata across 25 endpoints. Pay-per-use USDC on Solana Mainnet ($0.01/op). No accounts, no API keys. Remote MCP SSE.

astllm-mcp

An MCP server for efficient code indexing and symbol retrieval using tree-sitter AST parsing to fetch specific functions or classes without loading entire files. It significantly reduces AI token costs by providing O(1) byte-offset access to code components across multiple programming languages.

Openterms-mcp

Cryptographic proof of consent for AI agents. Sign before you act. Policy engine enforces spending caps, action whitelists, and escalation rules. Independently verifiable by anyone.

Kirha Crypto

Connect your LLM to real-time crypto data. Track Ethereum wallet portfolios and P&L, Bitcoin Ordinals, whales' movements, market trends, news sentiment, and more. Perfect for building a crypto-omniscient AI agent: From investment co-pilot to on-chain investigation assistant.

Aegis-ZK

On-chain trust verification for AI agent tools. Agents query skill attestations, audit levels, and risk scores before running third-party MCP servers, so you know what's safe before you execute.

io.github.blocklens/blocklens-mcp-server

Bitcoin on-chain analytics — 109 metrics: MVRV, SOPR, NUPL, HODL Waves, CDD, cycles & more