# Services from agent.halowerk.com on Zero

> agent.halowerk.com 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/agent.halowerk.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/agent.halowerk.com/health.json

## Services

- [Halowerk State Machine Step](https://www.zero.xyz/c/halowerk-state-machine-step-f22ad916/llms.txt): $0.002/call via x402. Computes a single deterministic state-machine transition given a machine definition, current state, and an event, with optional guard conditions evaluated against context or payload fields.
- [Halowerk Twin Diff](https://www.zero.xyz/c/halowerk-twin-diff-8ae16b97/llms.txt): $0.003/call via x402. Compares two JSON state documents (target vs observed) leaf-by-leaf and returns a per-path status indicating tolerance, deviation, missing, unexpected, or type-mismatch conditions.
- [Halowerk Memory Compact](https://www.zero.xyz/c/halowerk-memory-compact-554ffd24/llms.txt): $0.005/call via x402. Compresses a conversation history to fit within a character budget by pinning, deduplicating, trimming, and dropping messages in fixed stages.
- [Ephemeral RAG Store](https://www.zero.xyz/c/ephemeral-rag-store-b6596cc9/llms.txt): $0.005/call via x402. Creates a temporary, isolated vector store (max 20 documents, 24-hour TTL) with local embedding and cosine-similarity retrieval via nomic-embed-text
- [MCP Server Inspector](https://www.zero.xyz/c/mcp-server-inspector-7c484c45/llms.txt): $0.005/call via x402. Performs the MCP handshake against a remote server and returns its full catalogue of tools, resources, and prompts without executing anything.
- [Halowerk Task Quote Comparator](https://www.zero.xyz/c/halowerk-task-quote-comparator-54e64bd2/llms.txt): $0.005/call via x402. Normalises, filters, and ranks competing task offers by price, delivery speed, and capability coverage using weighted scoring, marking ineligible offers explicitly rather than dropping them.
- [Halowerk Webhook Inbox](https://www.zero.xyz/c/halowerk-webhook-inbox-fdc132fe/llms.txt): $0.005/call via x402. Creates a temporary public URL that receives POST/GET/PUT callbacks from third parties and lets an agent poll for those events by secret key.
- [Halowerk Async Job Runner](https://www.zero.xyz/c/halowerk-async-job-runner-f18e969b/llms.txt): $0.003/call via x402. Runs a sequence of HTTP steps in the background and POSTs the collected results to a callback URL when all steps complete.
- [Halowerk File Vault](https://www.zero.xyz/c/halowerk-file-vault-31b5cd7e/llms.txt): $0.004/call via x402. Stores a base64-encoded file (up to 25 MB) for a specified duration (up to 7 days) and returns a download URL with a 32-byte token, supporting configurable download limits and no account required.
- [Halowerk Agent State Store](https://www.zero.xyz/c/halowerk-agent-state-store-ca2e3607/llms.txt): $0.002/call via x402. Stores and retrieves temporary key-value state for AI agents across calls, with TTL-based expiry up to 30 days and opaque JSON values up to 64 KB.
- [Halowerk Wakeup Scheduler](https://www.zero.xyz/c/halowerk-wakeup-scheduler-abb50692/llms.txt): $0.002/call via x402. Schedules a one-time HTTP POST callback to a caller-supplied public HTTPS URL at a specified future time, with automatic retry on failure and full attempt logging.
- [Halowerk Intent Clarifier](https://www.zero.xyz/c/halowerk-intent-clarifier-64f80c93/llms.txt): $0.005/call via x402. Given a list of candidate intents with distinguishing attributes and already-known values, returns the single most informative question to ask next to narrow down which intent the user has.
- [A2A Agent Card Validator](https://www.zero.xyz/c/a2a-agent-card-validator-4265818f/llms.txt): $0.002/call via x402. Validates an Agent Card document against the A2A convention, returning findings categorized by severity (error, warning, info) covering required fields, URL format, skill definitions, and security schemes.
- [Halowerk Fallback Dependency Resolver](https://www.zero.xyz/c/halowerk-fallback-dependency-resolver-69d0b6bb/llms.txt): $0.005/call via x402. Searches the x402 discovery catalogue to find alternative services that can replace a broken or unavailable API dependency, ranked by task relevance and price.
- [MCP Tool Definition Normalizer](https://www.zero.xyz/c/mcp-tool-definition-normalizer-1dc7c430/llms.txt): $0.002/call via x402. Accepts a list of MCP tool definitions from one or more servers and rewrites them into a single, consistent schema form, resolving variations in field names like inputSchema, input_schema, parameters, schema, and arguments.
- [Halowerk Result Consensus](https://www.zero.xyz/c/halowerk-result-consensus-591bb5ca/llms.txt): $0.002/call via x402. Compares 2–12 JSON or scalar answers field-by-field and classifies each leaf path as agreed, conflicting, or partial across all responders.

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)