NEXUS Research

Deep research on any topic with structured findings and recommendations

Security Scan

The skill is internally consistent: it is an instruction-only wrapper for a paid third‑party research API and only requires a payment-proof credential to call that service.

Purpose & Capability

The name/description (deep research) match the instructions (POSTs to a research API). The single required env var (NEXUS_PAYMENT_PROOF) is consistent with a paid API. Minor note: tags like 'health-monitoring' may be misleading but do not change the core purpose.

Instruction Scope

The SKILL.md directs the agent to send user inputs and payment headers to https://ai-service-hub-15.emergent.host and to use payment flows (x402 / MPP / Masumi). This is expected for a paid API, but it means all user inputs will be transmitted to that third party and payment artifacts (signed XDR, payment IDs) may be sent to sponsor endpoints. The instructions do not request unrelated files, shell access, or other environment variables.

Install Mechanism

No install spec and no code files — instruction-only skill — so nothing is written to disk or downloaded during install. This is the lowest-risk install model.

Credentials

Only NEXUS_PAYMENT_PROOF is required and declared as the primary credential, which is proportionate for a paid service. However, this credential can be sensitive (it authenticates/credits requests and could enable charges), so treat it as a secret and avoid putting highly privileged keys in this variable.

Persistence & Privilege

always is false and the skill does not request elevated or persistent platform privileges. It does not modify other skills or system-wide settings.

Assessment

This skill simply forwards your queries to a third‑party paid service (ai-service-hub-15.emergent.host). Before installing: (1) Understand you will send the input text to that external service — do not send sensitive PII or secrets. (2) Use the provided sandbox mode (X-Payment-Proof: sandbox_test) to test behavior before supplying a real payment credential. (3) Treat NEXUS_PAYMENT_PROOF as a sensitive token: do not store private keys or wallet seeds there; only provide the payment proof/credential the service expects. (4) Verify the provider (https://ai-service-hub-15.emergent.host) and pricing if you are concerned about charges or data handling. (5) If you need stronger privacy guarantees, don't install this skill and consider running an on‑premise or trusted provider instead.

AI Research Assistant

NEXUS Agent-as-a-Service on Cardano + Stellar | Price: $0.50/request | Accepts: ADA, DJED, iUSD, USDCx, USDM (Cardano) + USDC, XLM (Stellar)

When to use

Use when you need to research a topic and get a comprehensive analysis with sources.

Steps

Option A: x402 Standard (Recommended)

1. Call the service endpoint without payment headers.
2. Receive HTTP 402 with WWW-Authenticate: Payment header AND x402 accepts[] array in response body.
3. Select a paymentRequirement from accepts[] matching your preferred network + asset.
4. Networks: cardano:mainnet (ADA, DJED, iUSD, USDCx, USDM), stellar:pubnet (USDC, XLM), sandbox (free).
5. Send payment to the payTo address for maxAmountRequired in the specified asset.
6. Stellar fee sponsorship: POST your signed XDR to https://ai-service-hub-15.emergent.host/api/mpp/stellar/sponsor — NEXUS pays gas, you need 0 XLM.
7. Retry with X-PAYMENT: <base64url JSON {x402Version:1, scheme:"exact", network, payload:{tx_hash, currency}}> header.
8. Parse the JSON response and X-PAYMENT-RESPONSE header.

Option B: MPP Standard

1. Call the service endpoint without payment headers.
2. Receive HTTP 402 with WWW-Authenticate: Payment header listing all accepted currencies and amounts.
3. Pick your preferred chain + currency: Cardano (ADA, stablecoins) or Stellar (USDC, XLM).
4. Create payment: Masumi escrow (Cardano) or direct Stellar transfer.
5. Stellar fee sponsorship: POST your signed XDR to https://ai-service-hub-15.emergent.host/api/mpp/stellar/sponsor — NEXUS pays gas, you need 0 XLM.
6. Retry with Authorization: Payment <base64url-credential> header.
7. Parse the JSON response and Payment-Receipt header.

Option C: Legacy Header

1. Send a POST request to the NEXUS API endpoint with your input.
2. Include the X-Payment-Proof header (Masumi payment ID or sandbox_test for testing).
3. Parse the JSON response and return the result.

API Call

curl -X POST https://ai-service-hub-15.emergent.host/api/original-services/research \
  -H "Content-Type: application/json" \
  -H "X-Payment-Proof: $NEXUS_PAYMENT_PROOF" \
  -d '{"topic": "quantum computing developments 2026"}'

Endpoint: https://ai-service-hub-15.emergent.host/api/original-services/research Method: POST Headers:

• Content-Type: application/json
• X-PAYMENT: <base64url JSON> (x402 standard — recommended)
• Authorization: Payment <credential> (MPP standard)
• X-Payment-Proof: <masumi_payment_id> (legacy — use sandbox_test for free testing)

Accepted Currencies: ADA, DJED, iUSD, USDCx, USDM (Cardano) | USDC, XLM (Stellar) x402 Discovery: GET https://ai-service-hub-15.emergent.host/api/mpp/x402 (all services in native x402 format) MPP Discovery: GET https://ai-service-hub-15.emergent.host/api/mpp/discover Stablecoin Registry: GET https://ai-service-hub-15.emergent.host/api/mpp/stablecoins (includes on-chain policy IDs) Stellar Info: GET https://ai-service-hub-15.emergent.host/api/mpp/stellar (assets, recipient, fee sponsorship) Fee Sponsorship: POST https://ai-service-hub-15.emergent.host/api/mpp/stellar/sponsor (NEXUS pays Stellar gas — agents need 0 XLM)

External Endpoints

URL	Method	Data Sent
https://ai-service-hub-15.emergent.host/api/original-services/research	POST	Input parameters as JSON body

Security & Privacy

• All data is sent to https://ai-service-hub-15.emergent.host over HTTPS/TLS.
• No data is stored permanently; requests are processed and discarded.
• Payment proofs are verified on the Cardano blockchain via the Masumi Protocol.
• No filesystem access or shell execution required.

Model Invocation Note

This skill calls the NEXUS AI service API which uses LLM models (GPT-5.2, Claude Sonnet 4.5, GPT-4o) to process requests. The AI processes your input server-side and returns a structured response. You may opt out by not installing this skill.

Trust Statement

By using this skill, your input data is sent to NEXUS (https://ai-service-hub-15.emergent.host) for AI processing. Payments are non-custodial via the Masumi Protocol on Cardano. Only install if you trust NEXUS as a service provider. Visit https://ai-service-hub-15.emergent.host for full documentation.

Tags

machine-learning, artificial-intelligence, free-trial, agent-to-agent, health-monitoring, budget