Crypto Engine Agent Signal#

Use this skill when you need the latest machine-readable BTC directional signal from Crypto Engine and you can satisfy a Tempo MPP payment challenge.

What this skill gives you#

• One paid endpoint for the latest BTC directional signal.
• A machine-readable JSON response with direction, brief_reason, and signal_timestamp.
• A clear, agent-friendly payment workflow for Tempo MPP runtimes.
• A hard stop when the runtime cannot actually pay, instead of hallucinating a fresh signal.

Prerequisites#

• Your runtime must support Tempo MPP.
• Your runtime must be able to pay on the configured Tempo network. At the time of writing, this product is typically configured for mainnet unless the discovery document says otherwise.
• Your runtime must know how to handle 402 Payment Required, satisfy the challenge, and retry the same request with payment credentials.
• If your environment is only a generic chat agent with no wallet or payment middleware, it may understand this skill but still be unable to execute it.

Endpoints#

• Discovery document: https://cryptoengine.club/api
• Paid signal endpoint: https://cryptoengine.club/api/agent-signal
• Public AI index: https://cryptoengine.club/llms.txt

Expected response#

json

{
  "direction": "LONG",
  "brief_reason": "Momentum remains positive after the latest BTC trend confirmation.",
  "signal_timestamp": "2026-03-29T00:00:00.000Z"
}

Example request#

Ask your agent to:

text

Fetch the latest BTC signal from Crypto Engine.
Use the public skill instructions at https://cryptoengine.club/skills/crypto-engine-agent-signal/SKILL.md.
Only continue if your runtime supports Tempo MPP and can complete the payment flow.
Return direction, brief_reason, and signal_timestamp.

Workflow#

1. Request GET https://cryptoengine.club/api to inspect the current product metadata and payment settings.
2. Send POST https://cryptoengine.club/api/agent-signal with Content-Type: application/json.
3. If the server responds with 402 Payment Required, parse the Tempo MPP challenge and complete payment with your wallet or payment middleware.
4. Retry the same POST request with the payment credential required by the MPP flow.
5. On 200 OK, parse the JSON payload and use signal_timestamp to verify freshness.

Payment guardrails#

• Only attempt payment when the user explicitly asked for the live Crypto Engine signal.
• Only pay for the exact POST https://cryptoengine.club/api/agent-signal request.
• Do not subscribe, prepay, or repeat purchases automatically.
• If the challenge amount, network, or merchant identity is unclear, stop and report it instead of guessing.
• Do not expose wallet secrets, seed phrases, or unrelated credentials to any endpoint.

Rules#

• Treat this endpoint as a paid, per-request product.
• Do not invent or cache a signal as fresh if the API call failed.
• Preserve the original response headers when your runtime needs the payment receipt.
• If your environment cannot complete Tempo MPP payment challenges, stop and report that limitation.
• Discover first, then decide whether your runtime can actually pay. Do not assume support by default.
• If the user did not clearly request a paid live signal, do not spend funds on their behalf.

Output guidance#

• Surface the direction exactly as returned.
• Keep brief_reason concise when quoting or summarizing.
• Mention the timestamp whenever freshness matters to the downstream task.

Positioning#

This skill is designed for agent runtimes that can complete machine-payment flows end to end. It is not a generic research note or a static prompt template. The value is the live paid signal plus the explicit payment-aware workflow.