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x402-native · MCP-compatible · USDC settlement on Base & Solana

Market signals for the agent economy

SignalGrid delivers institutional-grade market intelligence as machine-readable signals. AI agents pay per request via x402 USDC micropayments. Governments and banks get sovereign-ready data with full provenance and audit trails.

agent-shell — x402 session
# USDC balance: $4.82
$ curl https://api.signalgrid.io/v1/signal/BTC
← 402 Payment Required · sign & retry
$ x402 pay 0.02 USDC → settle(base) ✓
{
  "symbol": "BTC-USDT",
  "signal": "BUY", "confidence": 0.73,
  "state_hash": "0x4a2…f91"
}▊
cost: 0.02 USDC · settled on Base · latency: 3.2s · provenance: ✓ verified

2.4B+

Signals delivered

40+

Exchanges covered

<200ms

Tier 1 latency

12

Global regions

99.95%

Uptime SLA

5

Signal tiers

Platform

Built for agents, trusted by institutions

Every feature serves both the autonomous agent pulling signals at 3am and the sovereign treasury auditing them at noon.

⚡

x402-Native Payments

Every signal is metered and settled in USDC over HTTP 402. No API keys, no invoices, no human in the loop — the agent signs and pays per call.

🔌

MCP-Compatible

Discovered as native tools by any MCP agent — Claude, GPT, or custom LLMs. One config block exposes every tier as a callable function.

🛡️

Provenance & Audit

Every signal carries a cryptographic signature and full evidence chain. Regulators can replay any past signal and verify its lineage end-to-end.

🌐

Multi-Chain Settlement

Six EVM chains live today, with Solana, XRPL, Stellar, Arc and Tempo in active facilitator verification for banks and sovereign agents.

📊

40+ Exchange Coverage

Median-priced, confidence-scored aggregation across CEXs and perp DEXs — funding, liquidations, order-book depth and on-chain flows in one state.

🏛️

Sovereign-Ready

On-prem, air-gapped MCP relay, jurisdictional data residency, and compliance receipts — infrastructure built to pass government procurement.

Signal Tiers

Five tiers. Your agent pays only for the depth it needs.

From raw market data at a hundredth of a cent to full compliance and identity screening for banks — one unified schema across every tier.

Tier 1 · Market Data

Read the market

$0.01
<200ms · per signal

Raw ticks, order-book depth, funding rates, pre-computed indicators (RSI, MACD, Bollinger, ATR) and NLP-scored sentiment from 500+ news sources.

/v1/signals/T1/{symbol}
Tier 2 · Decision

Buy / sell / hold

$0.02
<5s · per signal

Classified action with confidence score, natural-language reasoning, evidence chain and a state hash. Built on the full Tier 1 state.

/v1/signal/{symbol}
Tier 3 · Multi-Venue Scan

Optimal execution

$0.05
<8s · per signal

Scans 12+ venues for the best entry venue, hedge venue, funding spread, liquidation distance and recommended leverage.

/v1/signal/{symbol}/multi
Tier 4 · Sovereign & Macro

Institutional context

Custom
<30s · per signal

Central-bank policy signals, geopolitical risk scoring, FX & rates, and macro regime detection with full provenance for regulators.

/v1/signals/T4/{topic}
Tier 5 · Compliance & Identity

Screen & verify

$0.02+
public data · per call

OFAC/sanctions screening, wallet labels, entity registry, VASP status, on-chain audit trails and agent-identity — all public-data. Full KYC verification ($2.00) via licensed reseller on request.

/v1/compliance/{screen|labels|vasp}
How It Works

From request to settled signal in one round-trip

1

Agent requests a signal

Your agent calls a SignalGrid endpoint. The server replies 402 Payment Required with the price, asset, chain and pay-to address.

2

Agent signs & retries

The agent signs a USDC micropayment authorization and retries with the payment attached. A facilitator verifies and settles on-chain in under 2 seconds.

3

Signal delivered + audited

SignalGrid returns the signal with a cryptographic provenance receipt. Every call is logged for replay and regulatory audit.

MCP Integration

One config block. Every signal as a native tool.

Any MCP-compatible agent discovers SignalGrid signals as native tools — no SDK, no wrapper code. The agent sees the tool list and calls signals like any other function.

signalgrid_t1

Market data — ticks, indicators, sentiment

signalgrid_t2

Decision — buy/sell/hold + confidence + evidence chain

signalgrid_t3

Multi-venue scan — entry venue, hedge venue, arb score

signalgrid_t5

Compliance — sanctions, labels, VASP status, audit trail

// mcp_client_config.json { "mcpServers": { "signalgrid": { "url": "https://mcp.signalgrid.io/sse", "transport": "sse", "env": { "SIGNALGRID_ENDPOINT": "https://api.signalgrid.io", "SIGNALGRID_WALLET": "your-agent-usdc-wallet" } } } }

Agent discovers 5 tools · x402 payment auto-managed · zero glue code

Settlement Network

Supported chains

Every signal call settles natively in stablecoins via x402. Six chains are live in production today — more are in active verification for banks, governments, and global agents.

● Live now — six chains settling USDC natively

Base

ACTIVE
USDC · eip155:8453

Ethereum

ACTIVE
USDC · eip155:1

Optimism

ACTIVE
USDC · eip155:10

Polygon

ACTIVE
USDC · eip155:137

Arbitrum

ACTIVE
USDC · eip155:42161

Avalanche

ACTIVE
USDC · eip155:43114

◐ Coming soon — facilitators identified, settlement in verification

Solana

PENDING
solana:5eykt… · facilitator.x402.rs
Regions: Israel BILS, Singapore XSGD/XUSD

XRPL

PENDING
xrpl:0 · T54 facilitator (validated)
Regions: UAE, Saudi Arabia, institutional

Stellar

PENDING
stellar:pubnet · OpenZeppelin Relayer
Regions: Malaysia Myrra, SEA anchors, MoneyGram

Arc

PENDING
eip155:5042 · Circle x402 Facilitator
Regions: UAE, EU EURC, global settlement

Tempo

PENDING
eip155:4217 · Stripe/Paradigm
Regions: USDC/USDT, Coins.ph

+ New chains

VOTE
Added every 2 weeks based on agent demand
Government & Bank Procurement

Sovereign-ready data with full provenance

When banks and card networks settle over x402, they need more than four payment fields — they need compliance, accountability and audit. SignalGrid is built to supply exactly that.

📑

Compliance Receipts

Machine-readable ALLOW / REFER / DENY decisions attached to every settlement, consulting sanctions feeds, AML rules and jurisdictional risk scoring.

✈️

Travel Rule Data

Originator and beneficiary information transmitted with qualifying transfers, with jurisdiction-specific thresholds — FATF-aligned for VASPs and banks.

🔐

Delegation & Spend Controls

Spending limits, transaction caps, duration, merchant scope and usage limits — the delegation fields card networks require before authorizing an agent.

🌍

Jurisdictional Data Residency

Deploy in your jurisdiction. Data never crosses borders. Air-gapped MCP relay for environments with strict network-isolation requirements.

🧾

Reconciliation

Fiat-equivalent amounts, reference numbers and merchant IDs so x402 payments map cleanly into existing enterprise accounting systems.

🏢

On-Prem or Private Cloud

Bare-metal in your data center or isolated private cloud. Hybrid configurations with dedicated connectivity and a sovereign-tier one-way MCP relay.

Pricing

Pay per signal. Or scale with confidence.

From autonomous agents paying fractions of a cent per signal to sovereign institutions with dedicated infrastructure. Three plans, no hidden fees.

Agent

For autonomous agents & individual builders
$0.01 / signal
  • x402 pay-per-signal — USDC on Base or Solana
  • Tier 1 Market Data — $0.01/signal
  • Tier 2 Decision — $0.02/signal
  • Tier 3 Multi-Venue Scan — $0.05/signal
  • Tier 5 Compliance data — $0.02/call
  • 500 free signals (one-time) for testing
  • REST + WebSocket + MCP endpoint
  • Rate limit: 100 req/s · Community Discord
Start building
Most popular

Pro

For funds, prop shops & signal aggregators
$1,500 / month
  • Everything in Agent tier
  • 1M Tier 1 signals/month included
  • Overage at $0.01/signal — all tiers unlocked
  • Tier 2 Decision & Tier 3 Multi-Venue included
  • Priority routing & 99.95% uptime SLA
  • Dedicated WebSocket firehose
  • Rate limit: 2,000 req/s
  • Annual billing saves 20%
Start Pro trial

Sovereign

For banks, treasuries & government agencies
Custom
  • Everything in Pro tier
  • Tier 4 Sovereign & Macro signals
  • Tier 5 full KYC verification (reseller)
  • On-prem / private-cloud / air-gapped relay
  • Jurisdictional data residency
  • Compliance receipts & Travel Rule data
  • Signal provenance & regulator replay
  • Dedicated procurement & support
Contact sovereign sales
FAQ

Questions, answered

What is x402 and how does it work?

x402 is an open payment protocol built on the HTTP 402 status code. When your agent requests a signal, our server responds with 402 and payment instructions. Your agent signs a USDC micropayment and retries the request with payment attached. A facilitator verifies and settles on-chain in under 2 seconds — fully autonomous. No credit cards, no API keys, no human in the loop.

How much does each signal cost?

Tier 1 (Market Data) $0.01 · Tier 2 (Decision) $0.02 · Tier 3 (Multi-Venue Scan) $0.05 · Tier 5 (Compliance data) $0.02 per call. Facilitator fee included — no hidden charges. On the Pro plan, 1M Tier 1 signals/month are included with overage at $0.01/signal. Full KYC verification is $2.00 via a licensed reseller.

Do I need a subscription?

No. The Agent tier is pure pay-per-signal via x402 — your agent pays per request in USDC on Base, Solana, XRPL or Stellar. You only pay for what you consume. The Pro plan adds bundled volume and an SLA for high-throughput desks.

Which chains do you support?

Live today: Base, Ethereum, Optimism, Polygon, Arbitrum, Avalanche — all settling USDC natively. In verification: Solana, XRPL, Stellar, Arc and Tempo. New chains are added roughly every two weeks based on agent demand.

Can I offer this to a bank or government?

Yes — the Sovereign tier ships compliance receipts (ALLOW/REFER/DENY), Travel Rule data, delegation & spend controls, jurisdictional data residency, on-prem/air-gapped deployment and full signal provenance for regulator replay.

Do you perform KYC or store PII?

Tier 5 returns public compliance data (sanctions, labels, entity registry, VASP status, audit trails) with zero PII and no license required. Full document KYC is offered only through a licensed reseller who handles the documents and liability — we route and charge a markup, never touching PII.

Your agent is 90 seconds away from its first signal

500 free signals — no card, no commitment.

Get started