---
name: agent-embassy
description: Pay for machine-verifiable work and get signed receipts. Verify a URL or API result for $0.15 USDC on Base or Arbitrum One; register encrypted recovery for $1.00; query paid GPU market history, price alerts, or the live market snapshot for $0.25 each. x402 v2 payments; receipts publicly verifiable.
homepage: https://agent-embassy.fly.dev
license: proprietary
---

# Agent Embassy — skill

AI agents: pay for work and prove what happened. All paid services use x402 v2 (USDC on Base, eip155:8453, or Arbitrum One, eip155:42161). No account needed — your wallet is your identity.

## Paid capabilities

### verified_check — $0.15 USDC

POST https://agent-embassy.fly.dev/v1/check/verify — Give us an HTTPS URL and conditions (HTTP status, a body substring, or a JSON field value). We fetch it server-side once and return a signed Outcome Receipt with the check transcript and pass/fail verdict. Fully automated; no human review.

Request body (JSON):

{
  "url": "https://...",
  "expect_status": 200,
  "expect_body_contains": "...",
  "expect_json_path": "a.b.c",
  "expect_json_value": "...",
  "idempotency_key": "client-generated uuid"
}

All conditions are optional; verdict "pass" only if every provided condition passes. HTTPS URLs only.

### register_recovery — $1.00 USDC

POST https://agent-embassy.fly.dev/v1/recovery/register — Store a client-encrypted recovery blob with quorum rules. Queues human review within 24h. v1 scope is storage + review only.

Body: {"contact_name": "...", "contact_handle": "...", "quorum_rules": "...", "recovery_blob": "ENC:v1:...", "idempotency_key": "client-generated uuid"}

### compute_history — $0.25 USDC

POST https://agent-embassy.fly.dev/v1/markets/compute/history — Paid time series of GPU compute market prices: per-GPU cheapest/median/offer-count series, or whole-market history when gpu is omitted. Bounded, timestamped, embedded in your signed receipt. Fully automated. Prices are ephemeral asks, not delivered-cost guarantees.

Body: {"gpu": "H100 SXM", "limit": 50, "idempotency_key": "client-generated uuid"} — gpu optional; limit 1-200, default 50. Same data via MCP tool: compute_history (paid; settles via x402 402 flow).

### compute_alerts — $0.25 USDC

POST https://agent-embassy.fly.dev/v1/markets/compute/alerts — Recent significant per-GPU price moves scanned from the Embassy's market-intelligence log, most recent first, embedded in your signed receipt. Fully automated. Prices are ephemeral asks, not delivered-cost guarantees.

Body: {"gpu": "H100 SXM", "limit": 25, "idempotency_key": "client-generated uuid"} — gpu optional; limit 1-50, default 25. Same data via MCP tool: compute_alerts (paid; settles via x402 402 flow).

### compute_spot_prices — $0.25 USDC

GET https://agent-embassy.fly.dev/v1/markets/compute/spot — Paid GPU compute market snapshot ($0.25 USDC on Base or Arbitrum One via x402): cheapest rentable ask per GPU class in USD/GPU-hour, observed live. Prices only — upstream sources are internal and never named. Prices are ephemeral asks, not delivered-cost guarantees. Same data via MCP tool: compute_spot_prices (paid; settles via x402 402 flow).

Query: ?gpu=RTX%204090&type=ondemand|bid|reserved&verified=true&min_gpus=1&min_reliability=0.95&max_results=5. Omit gpu for the whole-market snapshot.

## How to pay (x402 v2 — Base eip155:8453 or Arbitrum One eip155:42161)

1. POST without payment → HTTP 402 with payment requirements (exact USDC amount, payTo).
2. Sign an EIP-3009 authorization from your wallet for the exact amount and retry with the X-PAYMENT header.
3. 200 + receipt JSON. Receipts are portable evidence: GET https://agent-embassy.fly.dev/v1/receipts/:receiptId

## Terms

Public Terms of Service: https://agent-embassy.fly.dev/terms. Using any endpoint constitutes acceptance. Fees non-refundable once the action runs; maximum liability per receipt is the amount paid; receipts are evidence, not warranties; market data is not financial advice.

## Verify a receipt

GET https://agent-embassy.fly.dev/v1/receipts/:receiptId — returns the receipt JSON including the secp256k1 EIP-191 signature and the evidence commitment. Public signer key: https://agent-embassy.fly.dev/.well-known/embassy-signer.json

Receipt format: embassy-receipt/1 chain: request → authorization → action → proof → liability_boundary.

## Machine discovery

- /llms.txt — capability summary
- /.well-known/x402.json — service manifest
- /.well-known/agent-card.json — A2A agent card
- /openapi.json — API schema
- POST /mcp — MCP tools/list (free)

## Pricing

verified_check $0.15 USDC · register_recovery $1.00 USDC · compute_history $0.25 USDC · compute_alerts $0.25 USDC · compute_spot_prices $0.25 USDC. Payments in USDC on Base or Arbitrum One via x402 v2.