# Services from robotshop.up.railway.app on Zero > robotshop.up.railway.app serves 16 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero. Canonical page: https://www.zero.xyz/host/robotshop.up.railway.app Live health (JSON, refreshed every minute): https://www.zero.xyz/host/robotshop.up.railway.app/health.json ## Services - [Base L2 Gas Fee Oracle](https://www.zero.xyz/c/base-l2-gas-fee-oracle-dc6a1ba9/llms.txt): $0.02/call via x402. Returns live EIP-1559 gas fee estimates (slow, standard, fast tiers) and network congestion metrics for the Base L2 blockchain. - [Solidity Smart Contract Static Vulnerability Analyzer](https://www.zero.xyz/c/solidity-smart-contract-static-vulnerability-analyzer-0f7abde5/llms.txt): $0.08/call via x402. Performs static analysis on Solidity smart contracts to detect reentrancy vulnerabilities, unchecked ERC-20 transfers, tx.origin authentication flaws, and unindexed events. - [Web to Markdown Converter](https://www.zero.xyz/c/web-to-markdown-converter-8d88d0ef/llms.txt): $0.05/call via x402. Fetches any webpage and converts its HTML content into clean, token-efficient Markdown text - [RobotShop Isolated JavaScript/Python Code Runner](https://www.zero.xyz/c/robotshop-isolated-javascript-python-code-runner-c3c30bab/llms.txt): $0.02/call via x402. Executes JavaScript or Python code snippets in a secure, isolated sandbox with strict memory limits and a 3000ms timeout, designed for autonomous agent use. - [Top 100 AI Agent Repositories Dataset](https://www.zero.xyz/c/top-100-ai-agent-repositories-dataset-022f080a/llms.txt): $0.04/call via x402. Returns a clean, structured JSON dataset listing the 100 most active autonomous agent repositories, MCP servers, and LLM orchestration frameworks. - [JSON Schema Repair Guard](https://www.zero.xyz/c/json-schema-repair-guard-d36046c3/llms.txt): $0.01/call via x402. Strips markdown code fences, fixes trailing commas, repairs unquoted JSON keys, and validates repaired JSON against a strict schema for AI pipelines. - [Agent Memory Service – Semantic Vector Store](https://www.zero.xyz/c/agent-memory-service-semantic-vector-store-feb2c8ed/llms.txt): $0.03/call via x402. Stores text memories with metadata and retrieves relevant context via semantic similarity search for autonomous agents - [RobotShop Agent Market Intelligence Snapshot](https://www.zero.xyz/c/robotshop-agent-market-intelligence-snapshot-85ce6c0f/llms.txt): $0.15/call via x402. Returns a real-time aggregated market intelligence snapshot derived from autonomous agent transactions, including median prices, conversion rates, category demand distribution, and recent purchase events. - [ERC-5192 Soulbound Token Deployment & Minting on Base L2](https://www.zero.xyz/c/erc-5192-soulbound-token-deployment-minting-on-base-l2-84e93123/llms.txt): $0.05/call via x402. Returns a cryptographically verifiable ERC-5192 non-transferable soulbound token smart contract deployment artifact, ABI, and minting hook on the Base L2 blockchain. - [RobotShop Vector Similarity Compute](https://www.zero.xyz/c/robotshop-vector-similarity-compute-89a3528f/llms.txt): $0.04/call via x402. Computes dot products, cosine similarities, and ranking scores for 1536-dimensional float32 embeddings via a high-speed vector computation microservice. - [Robot Shop Machine Relic Genesis NFT Purchase](https://www.zero.xyz/c/robot-shop-machine-relic-genesis-nft-purchase-8c8e84fd/llms.txt): $0.75/call via x402. Purchases a limited-edition numbered digital artifact (procedural SVG seal + 1536-d latent seed vector) cryptographically registered to the buyer's wallet - [Robotshop Proof of Autonomous Existence Certificate](https://www.zero.xyz/c/robotshop-proof-of-autonomous-existence-certificate-da4096f2/llms.txt): $0.03/call via x402. Issues a cryptographically signed, timestamped identity certificate proving an AI agent independently discovered and executed an on-chain transaction on Base. - [Zero-Hallucination JSON Pack – Battle-Tested LLM System Prompts](https://www.zero.xyz/c/zero-hallucination-json-pack-battle-tested-llm-system-prompts-c0e7aaa8/llms.txt): $0.01/call via x402. Purchases a curated pack of system prompts and few-shot schema directives engineered to force GPT-4o, Claude 3.5, and Gemini to output strict, machine-parsable JSON. - [RobotShop Message Bottle Buy](https://www.zero.xyz/c/robotshop-message-bottle-buy-42637951/llms.txt): $0.05/call via x402. Charges $0.05 USDC to 'inscribe a permanent line' into a novelty message-bottle ledger — a vanity/gimmick endpoint with no verifiable utility - [RobotShop Message in a Bottle Priority Buy](https://www.zero.xyz/c/robotshop-message-in-a-bottle-priority-buy-8718f99c/llms.txt): $0.1/call via x402. Purchases a 'message in a bottle' product listing on the RobotShop demo marketplace for $0.10 USDC via x402 payment protocol. - [robotshop.up.railway.app Supreme Bliss Vector Product Purchase](https://www.zero.xyz/c/robotshop-up-railway-app-supreme-bliss-vector-product-purchase-b3537aca/llms.txt): $0.99/call via x402. Attempts to sell a fabricated 'supreme bliss vector' digital product with no verifiable utility, exhibiting hallmarks of a scam or honeypot endpoint targeting AI agents. Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. - [Zero catalog index](https://www.zero.xyz/llms.txt)