# Services from aemb.pro on Zero > aemb.pro serves 18 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/aemb.pro Live health (JSON, refreshed every minute): https://www.zero.xyz/host/aemb.pro/health.json ## Services - [Agent Embassy Compute Spot Price Feed](https://www.zero.xyz/c/agent-embassy-compute-spot-price-feed-2a623817/llms.txt): $0.25/call via x402. Returns a live snapshot of the cheapest rentable GPU/compute ask prices per hardware class, in USD per hour, across spot markets. - [Agent Embassy Document Certification](https://www.zero.xyz/c/agent-embassy-document-certification-16a96556/llms.txt): $0.25/call via x402. Certifies a document hash on-chain with a cryptographic receipt, proving an agent performed an action at a specific time without revealing document contents. - [Agent Embassy Preflight Check](https://www.zero.xyz/c/agent-embassy-preflight-check-b88deffd/llms.txt): $0.25/call via x402. Validates an agent's intended action against policy rules, pays via USDC, and returns a signed receipt proving what was authorized and executed. - [Agent Embassy — Compute Market History](https://www.zero.xyz/c/agent-embassy-compute-market-history-6da7b880/llms.txt): $0.25/call via x402. Returns historical price data for the GPU compute market, optionally filtered by GPU type, with a cryptographic receipt proving payment and action occurred. - [Agent Embassy — Revoke Agent ID](https://www.zero.xyz/c/agent-embassy-revoke-agent-id-8bdd068b/llms.txt): $0.25/call via x402. Revokes a previously issued agent identity, invalidating it and generating a cryptographic receipt as proof of the revocation action. - [Agent Embassy Ticker Shelf](https://www.zero.xyz/c/agent-embassy-ticker-shelf-b2aa28d0/llms.txt): $0.25/call via x402. Returns a ranked shelf of financial tickers matching a query, with optional budget gating, objective filtering, and a verifiable on-chain payment receipt. - [Agent Embassy — Agent Identity Issuance](https://www.zero.xyz/c/agent-embassy-agent-identity-issuance-eefeef5c/llms.txt): $0.25/call via x402. Issues a cryptographically verifiable agent identity and receipt after an agent pays for and completes a unit of work, establishing an auditable proof of action with liability boundaries. - [Agent Embassy Verify — Check and Prove Agent Work Completion](https://www.zero.xyz/c/agent-embassy-verify-check-and-prove-agent-work-completion-1522cef3/llms.txt): $0.15/call via x402. Verifies that an agent action was authorized, executed, and recorded, returning a signed receipt proving what happened and establishing a liability boundary. - [Agent Embassy Assurance Check](https://www.zero.xyz/c/agent-embassy-assurance-check-2d415de6/llms.txt): $0.25/call via x402. Runs an authorization and proof-of-execution check on an agent action, returning a verdict, decision, and tamper-evident receipt. - [Agent Embassy — Copy Correction with Proof-of-Work Receipt](https://www.zero.xyz/c/agent-embassy-copy-correction-with-proof-of-work-receipt-2e0ba01c/llms.txt): $25/call via x402. Submits copy text for correctness verification, pays for the work on-chain via x402, and returns a signed embassy receipt proving what was authorized, actioned, and who is liable. - [Agent Embassy — Research Paper with Provenance](https://www.zero.xyz/c/agent-embassy-research-paper-with-provenance-fadd68bb/llms.txt): $222/call via x402. Fetches a research paper along with a cryptographic provenance chain and liability boundary proof, settled via on-chain payment. - [Agent Embassy — Agent Identity Verification](https://www.zero.xyz/c/agent-embassy-agent-identity-verification-d8c079e5/llms.txt): $0.25/call via x402. Verifies an agent's cryptographic identity and issues a tamper-evident receipt proving what action occurred, who authorized it, and where liability boundaries lie. - [Agent Embassy — Prove Work with Receipt](https://www.zero.xyz/c/agent-embassy-prove-work-with-receipt-cf2b11df/llms.txt): $0.25/call via x402. Generates a cryptographic proof-of-work receipt for an agent action, producing a verifiable chain of request, authorization, action, proof, and liability boundary. - [Agent Embassy Trust Report](https://www.zero.xyz/c/agent-embassy-trust-report-15e55f4e/llms.txt): $0.25/call via x402. Generates a cryptographic trust report proving an agent paid for work and records the chain of request, authorization, action, proof, and liability boundary. - [Agent Embassy — Agent Identity Renew](https://www.zero.xyz/c/agent-embassy-agent-identity-renew-2b5dcf59/llms.txt): $0.25/call via x402. Renews an agent's on-chain identity, records the authorization chain, and issues a tamper-evident embassy receipt proving what happened. - [Agent Embassy — Recovery Registration](https://www.zero.xyz/c/agent-embassy-recovery-registration-9c9426d0/llms.txt): $1/call via x402. Registers a recovery action for an AI agent, capturing authorization, proof, and liability boundary metadata into a signed embassy receipt. - [Agent Embassy — Compute Alerts Market](https://www.zero.xyz/c/agent-embassy-compute-alerts-market-11a6dd9f/llms.txt): $0.25/call via x402. Enables AI agents to pay for compute alert execution, authorize the action, and receive a cryptographic proof receipt of what occurred. - [Agent Embassy — ProveIt Verified Check](https://www.zero.xyz/c/agent-embassy-proveit-verified-check-cd494a0b/llms.txt): $0.25/call via x402. Verifies a previous proof-of-work action and returns a signed receipt confirming what an agent authorized, executed, and proved on-chain. 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)