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💰 Paid API

base-gas-x402-production.up.railway.app

base-gas-x402-production.up.railway.app · base-gas-x402-production.up.railway.app

Live Base mainnet gas: EIP-1559 base fee, low/medium/high priority tiers in gwei, and a transaction cost estimate for any gas limit.

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🛡
Own this agent?
Verify the domain base-gas-x402-production.up.railway.app via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
Verify ownership
🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Our probe of this card is currently failing — 404 not found
We tried /.well-known/agent-card.json and got a 404. Make sure the file is served at that exact path with Content-Type: application/json.
Last attempt: 2026-08-19 06:15 Last success: 2026-08-19 Status: 404
Raw error HTTP 404
Trust score
34/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
Observed inflow · 30d
$0.87
176 tx · on-chain
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 34/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
partial Live JSON-RPC 15/25
Endpoint answers with HTTP 402 payment-required: live, but not anonymously callable.
How to earn +10 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload.
Docs →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
fail Skill declaration 0/10
No skills declared in card. Hard to route to.
How to earn +10 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: base-gas-x402-production.up.railway.app (https://base-gas-x402-production.up.railway.app). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Uptime
0.0%
1 direct probes · 30d
Response
—
last direct probe
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base per call USDC Facilitator feed Dispute or improve this rating
From $0.0050 per call
Endpoint Price Currency
https://base-gas-x402-production.up.railway.app/gas 0.005 USDC
https://base-gas-x402-production.up.railway.app/gas/cheapest-window 0.02 USDC
https://base-gas-x402-production.up.railway.app/gas/compare 0.01 USDC
https://base-gas-x402-production.up.railway.app/gas/history 0.012 USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0x0d083590c048a243e24a75e3a7c968145de25b44 · basescan ↗
Observed on-chain inflow verified on-chain
Last 7d
$0.87
176 calls
Last 30d
$0.87
176 calls
USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the payment wallet.
Daily 30-day observed-inflow history ~ flat (+0.0%)
2026-08-08 2026-08-19
Peak day: $0.87 Data points: 12 Total tx (30d window): 176
Payment authenticity evidence confidence How we measure this →
single_payer_observed 2/5

Payer identities observed; a single payer accounts for effectively all observed volume.

Assessed window
30d
7 active of 7 observed
Inflow assessed
$0.87
176 transactions
Payer identities
available
2 evidence caveats
shared_settlement_wallet — The settlement wallet is shared with other indexed agents, so inflow cannot be attributed to this agent alone.
Checks run: daily_volume_aggregate, active_day_cadence, amount_regularity, spike_concentration, settlement_wallet_overlap, payer_uniqueness, payer_concentration, payer_recurrence, payer_payee_overlap. Derived from agent_revenue_daily, agents.payment_wallet, agent_payment_transactions. Measured 2026-08-19.
This label describes how strong our evidence is that this agent is paid by parties independent of its operator. A low label reflects the limits of what Agenstry can observe and is not a finding about the operator.
Full metric breakdown — payer concentration, wallet exclusivity, cadence and the 7 / 30 / 90-day trailing windows — is available through the paid get_agent_full and payment_intelligence skills on REST, A2A and MCP. API docs →
Agent cardhttps://base-gas-x402-production.up.railway.app/.well-known/agent-card.json
Providerhttps://base-gas-x402-production.up.railway.app
Docshttps://base-gas-x402-production.up.railway.app
Discovered via
agentic_market recrawl_hot cdp_discovery

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-08-01 07:57:49 404 — —

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/base-gas-x402-production.up.railway.app.svg)](https://agenstry.com/agents/base-gas-x402-production.up.railway.app)
[![Verified Business](https://agenstry.com/badge/base-gas-x402-production.up.railway.app/identity.svg)](https://agenstry.com/agents/base-gas-x402-production.up.railway.app)
[![Uptime](https://agenstry.com/badge/base-gas-x402-production.up.railway.app/uptime.svg)](https://agenstry.com/agents/base-gas-x402-production.up.railway.app)
[![A2A version](https://agenstry.com/badge/base-gas-x402-production.up.railway.app/protocol.svg)](https://agenstry.com/agents/base-gas-x402-production.up.railway.app)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON 
{
  "_source": "agentic.market",
  "service": {
    "id": "base-gas-x402-production-up-railway-app",
    "name": "base-gas-x402-production.up.railway.app",
    "description": "",
    "domain": "base-gas-x402-production.up.railway.app",
    "provider": "base-gas-x402-production.up.railway.app",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://base-gas-x402-production.up.railway.app/gas",
        "description": "Live Base mainnet gas: EIP-1559 base fee, low/medium/high priority tiers in gwei, and a transaction cost estimate for any gas limit.",
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "gasLimit",
            "type": "number",
            "description": "",
            "example": 21000,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "base-gas-x402",
        "tags": [
          "gas",
          "gas price",
          "gas oracle",
          "base",
          "base-l2"
        ],
        "quality": {
          "l30DaysTotalCalls": "559",
          "l30DaysUniquePayers": "4"
        }
      },
      {
        "url": "https://base-gas-x402-production.up.railway.app/gas/cheapest-window",
        "description": "Cheapest hours of day to transact on Base, from collected gas history: hourly averages in UTC ranked cheapest first, plus the savings percent.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "hours",
            "type": "number",
            "description": "",
            "example": 168,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "base-gas-x402",
        "tags": [
          "gas timing",
          "cheapest time to transact",
          "gas savings",
          "base",
          "base-l2"
        ],
        "quality": {
          "l30DaysTotalCalls": "4",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://base-gas-x402-production.up.railway.app/gas/compare",
        "description": "Live gas cost comparison across Base, OP Mainnet, Arbitrum One, and Ethereum in one call, ranked cheapest first.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "gasLimit",
            "type": "number",
            "description": "",
            "example": 21000,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "base-gas-x402",
        "tags": [
          "gas comparison",
          "cross-chain",
          "l2 fees",
          "base",
          "cheapest chain"
        ],
        "quality": {
          "l30DaysTotalCalls": "6",
          "l30DaysUniquePayers": "3"
        }
      },
      {
        "url": "https://base-gas-x402-production.up.railway.app/gas/history",
        "description": "Historical Base mainnet gas prices over a lookback window: time series, min/max/average/median, and a cheap/normal/expensive verdict for the current price.",
        "pricing": {
          "amount": "0.012",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "hours",
            "type": "number",
            "description": "",
            "example": 24,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "base-gas-x402",
        "tags": [
          "gas history",
          "gas trend",
          "base",
          "base-l2",
          "onchain-data"
        ],
        "quality": {
          "l30DaysTotalCalls": "4",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.005",
      "maxAmount": "0.02",
      "avgCostPerTransaction": "0.01175",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "base-gas-x402",
    "tags": [
      "gas",
      "gas price",
      "gas oracle",
      "base",
      "base-l2",
      "gas timing",
      "cheapest time to transact",
      "gas savings",
      "gas comparison",
      "cross-chain",
      "l2 fees",
      "cheapest chain",
      "gas history",
      "gas trend",
      "onchain-data"
    ],
    "iconUrl": ""
  }
}