●

2s.io

Data ✓ VERIFIED

verified until 2026-08-17

Keyless pay-per-call API for AI agents: 316 endpoints across 95+ groups. Patents & trademarks (USPTO), legal (CourtListener), government & economy (SEC EDGAR, Census, World Bank, Federal Register), finance/markets, science & medicine (arXiv, PubMed, ICD-10, drug data), vehicles & aviation (NHTSA), geo & weather (OpenStreetMap, NWS/NOAA, USGS), business registries (GLEIF LEI), sanctions screening (OFAC), cybersecurity (CVE/KEV/EPSS), and web/data utilities. No signup, no API key: pay per request in USDC on Base or Solana via x402. Machine-readable OpenAPI, llms.txt, JSON-LD, and MCP server card.

Pay from $0.0025 to $0.009 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-05-29 · $93.54 all-time · settled via coinbase

BASE URL https://2s.io │ WEBSITE https://2s.io │ ENDPOINTS 6 │ NETWORK Base / Solana │ ASSET USDC │ MEMBER SINCE 2026-06-25 │ MONITORED SINCE 2026-06-25

ASSESSMENT

updated 7m ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%

uptime 24h: 100%
uptime 7d: 100%
uptime 30d: 100%
uptime 90d: 100%
response p95: 694ms
avg response: 335ms
total checks: 2,775

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.0025 to $0.009 (p26 in Data)

price (min): $0.0025
price (max): $0.009
category percentile (min): p26 in Data
category percentile (max): p17 in Data
endpoints / prices: 6 / 4
model: tiered
stability: 0%

risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: -
registrar: -
hosting: custom
domain created: ---

Identity facts, not a risk score.

traction $57.00854 30d · 242 buyers

volume 30d: $57.00854
buyers 30d: 242
settlements 30d: 22,933
first settlement: 2026-05-29
last settlement: 2026-08-10
top buyer share: 16% of 30d volume
trend 7d vs 30d: 0.89x the 30d daily rate
networks: eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time: $93.54
settlements all-time: 34,689
median settlement 30d: $0.0012
max settlement 30d: $0.1305
settled via: coinbase

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

CHANGES

3 events, detecting since 2026-07-24

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes schema changed 22h ago (3 since 2026-07-24)

schema changed · 22h ago

schema removed GET /api/geo/ip exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema removed GET /api/law/case-search exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema removed GET /api/medical/icd10 exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema removed GET /api/patents/search exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema removed GET /api/vehicle/vin-decode exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema removed GET /api/wikipedia/summary exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema added GET /api/geo/ip exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM","name":"USDC","version":"1"}

schema added GET /api/law/case-search exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM","name":"USDC","version":"1"}

schema added GET /api/medical/icd10 exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM","name":"USDC","version":"1"}

schema added GET /api/patents/search exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM","name":"USDC","version":"1"}

schema added GET /api/vehicle/vin-decode exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP","name":"USDC","version":"1"}

schema added GET /api/wikipedia/summary exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM","name":"USDC","version":"1"}

schema changed · 6d ago

schema removed GET /api/geo/ip exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F","name":"USDC","version":"1"}

schema removed GET /api/law/case-search exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb","name":"USDC","version":"1"}

schema removed GET /api/medical/icd10 exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP","name":"USDC","version":"1"}

schema removed GET /api/patents/search exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM","name":"USDC","version":"1"}

schema removed GET /api/vehicle/vin-decode exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F","name":"USDC","version":"1"}

schema removed GET /api/wikipedia/summary exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM","name":"USDC","version":"1"}

schema added GET /api/geo/ip exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema added GET /api/law/case-search exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema added GET /api/medical/icd10 exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema added GET /api/patents/search exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema added GET /api/vehicle/vin-decode exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

schema added GET /api/wikipedia/summary exact solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v USDC 2 60 {"feePayer":"Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88","name":"USDC","version":"1"}

price changed · 7d ago

GET /api/geo/ip · eip155:8453 · USDC: 1000 → 2500

GET /api/geo/ip · solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp · USDC: 1000 → 2500

GET /api/law/case-search · eip155:8453 · USDC: 3600 → 9000

GET /api/law/case-search · solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp · USDC: 3600 → 9000

GET /api/medical/icd10 · eip155:8453 · USDC: 1000 → 2500

GET /api/medical/icd10 · solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp · USDC: 1000 → 2500

GET /api/patents/search · eip155:8453 · USDC: 1800 → 4500

GET /api/patents/search · solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp · USDC: 1800 → 4500

GET /api/vehicle/vin-decode · eip155:8453 · USDC: 2400 → 6000

GET /api/vehicle/vin-decode · solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp · USDC: 2400 → 6000

GET /api/wikipedia/summary · eip155:8453 · USDC: 1000 → 2500

GET /api/wikipedia/summary · solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp · USDC: 1000 → 2500

Amounts are on-wire atomic units in the named asset.

see all changes for this service

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	PRICE	NETWORK	ASSET	402 CHANNEL
GET	/api/geo/ip	$0.0025	Base/Solana	USDC	header
GET	/api/law/case-search	$0.009	Base/Solana	USDC	header
GET	/api/medical/icd10	$0.0025	Base/Solana	USDC	header
GET	/api/patents/search	$0.0045	Base/Solana	USDC	header
GET	/api/vehicle/vin-decode	$0.006	Base/Solana	USDC	header
GET	/api/wikipedia/summary	$0.0025	Base/Solana	USDC	header

6 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /api/geo/ip returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request

curl -i 'https://2s.io/api/geo/ip'

// 402 response (captured by monitor) · 6 payloads · click to expand

[
  {
    "error": "PAYMENT-SIGNATURE required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
        "amount": "6000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "name": "USDC",
          "version": "1",
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
        },
        "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
        "amount": "6000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://2s.io/api/vehicle/vin-decode",
      "tags": [
        "public-records",
        "identifiers",
        "ai-agents",
        "us-gov-data",
        "x402",
        "upto-billing",
        "ai-gateway",
        "agent-infrastructure"
      ],
      "iconUrl": "https://2s.io/icon-512.png",
      "mimeType": "application/json",
      "description": "Decode a 17-character VIN to manufacturer-supplied vehicle metadata via NHTSA's vPIC database. Returns identity (year, make, model, trim, series, body class, manufacturer), assembly plant (city, state, country), engine (cylinders, displacement, HP, fuel type, configuration, engine model), transmission (style, speeds), and body/weight specs. Curated to the ~30 fields agents actually use from vPIC's ~140-field response. Backed by NHTSA.gov; data is public-domain US government records.",
      "serviceName": "2s"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "vin": "xxxxxxxxxxxxxxxxx",
              "modelYear": 1949
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "queryParams"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "const": "GET"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "vin"
                  ],
                  "properties": {
                    "vin": {
                      "type": "string",
                      "maxLength": 17,
                      "minLength": 17,
                      "description": "17-character VIN. Case-insensitive. Excludes letters I, O, and Q per VIN standard."
                    },
                    "modelYear": {
                      "type": "integer",
                      "maximum": 2099,
                      "minimum": 1949,
                      "description": "Optional model-year hint — disambiguates VINs where the year-digit wraps (A=1980/2010, etc.)."
                    }
                  },
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "PAYMENT-SIGNATURE required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
        "amount": "2500",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "name": "USDC",
          "version": "1",
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
        "amount": "2500",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://2s.io/api/medical/icd10",
      "tags": [
        "public-records",
        "identifiers",
        "ai-agents",
        "us-gov-data",
        "x402",
        "upto-billing",
        "ai-gateway",
        "agent-infrastructure"
      ],
      "iconUrl": "https://2s.io/icon-512.png",
      "mimeType": "application/json",
      "description": "Verify and search ICD-10-CM diagnosis codes against the official US code set (FY2026, ~98k entries). Pass code (with or without the dot, e.g. E11.9 or E119) to confirm the code exists and list its more-specific child codes, or q to keyword-search code descriptions (e.g. \"type 2 diabetes neuropathy\"). Optional billable_only=true restricts results to codes valid for claim submission; limit caps results (1-50, default 10). Returns a verified flag, the exact match if any, and matched codes with billable status plus short and long descriptions. Data: CMS/NCHS ICD-10-CM (public domain), refreshed each US fiscal year. Use to confirm diagnosis codes are real and current before placing them in claims, prior authorizations, or clinical documents.",
      "serviceName": "2s"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "q": "xxx",
              "code": "xxx",
              "limit": 1,
              "billable_only": false
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "queryParams"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "const": "GET"
                },
                "queryParams": {
                  "type": "object",
                  "properties": {
                    "q": {
                      "type": "string",
                      "maxLength": 120,
                      "minLength": 3,
                      "description": "Keyword search over official code descriptions (e.g. \"type 2 diabetes neuropathy\"). Every word must match. Provide either code or q, not both."
                    },
                    "code": {
                      "type": "string",
                      "maxLength": 9,
                      "minLength": 3,
                      "description": "ICD-10-CM code to verify, with or without the dot (e.g. E11.9 or E119). Returns the exact match plus more-specific child codes. Provide either code or q, not both."
                    },
                    "limit": {
                      "type": "integer",
                      "maximum": 50,
                      "minimum": 1,
                      "description": "Maximum codes returned (1-50, default 10)."
                    },
                    "billable_only": {
                      "type": "boolean",
                      "description": "When true, only return codes valid for claim submission (excludes category headers)."
                    }
                  },
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "PAYMENT-SIGNATURE required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
        "amount": "2500",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "name": "USDC",
          "version": "1",
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
        "amount": "2500",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://2s.io/api/geo/ip",
      "tags": [
        "public-records",
        "identifiers",
        "ai-agents",
        "us-gov-data",
        "x402",
        "upto-billing",
        "ai-gateway",
        "agent-infrastructure"
      ],
      "iconUrl": "https://2s.io/icon-512.png",
      "mimeType": "application/json",
      "description": "Geolocate a single IPv4 or IPv6 address. Returns country (name + ISO code), region (name + code), city, ZIP, lat/lon, timezone, ISP, organization, and AS number + name. For bulk lookups (up to 100 IPs in one call) use /api/ipinfo/bulk instead. Lat/lon precision is city-level, not GPS.",
      "serviceName": "2s"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "ip": "xx"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "queryParams"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "const": "GET"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "ip"
                  ],
                  "properties": {
                    "ip": {
                      "type": "string",
                      "maxLength": 45,
                      "minLength": 2
                    }
                  },
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "PAYMENT-SIGNATURE required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
        "amount": "4500",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "name": "USDC",
          "version": "1",
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
        "amount": "4500",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://2s.io/api/patents/search",
      "tags": [
        "public-records",
        "identifiers",
        "ai-agents",
        "us-gov-data",
        "x402",
        "upto-billing",
        "ai-gateway",
        "agent-infrastructure"
      ],
      "iconUrl": "https://2s.io/icon-512.png",
      "mimeType": "application/json",
      "description": "Search US patent applications and grants via the USPTO Open Data Portal. Query: q (required, 2+ chars), yearFrom / yearTo (optional filing-year bounds), applicationType (optional: Utility|Design|Plant|Reissue), limit (1-100, default 10), offset (0-based, default 0). Returns { total, returned, offset, limit, hits[{ applicationNumber, title, applicationType, firstInventor, inventors[], applicants[], filingDate, effectiveFilingDate, status:{ code, description, updatedAt }, cpcSymbols[], uspcSymbol, url }] }. URLs link to USPTO Patent Center for the public file wrapper.",
      "serviceName": "2s"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "q": "neural network",
              "limit": 5
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "queryParams"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "const": "GET"
                },
                "queryParams": {
                  "required": [
                    "q"
                  ],
                  "properties": {
                    "q": {
                      "type": "string",
                      "description": "Free-text search across patent titles and abstracts."
                    },
                    "limit": {
                      "type": "integer",
                      "description": "1-100, default 10."
                    },
                    "offset": {
                      "type": "integer",
                      "description": "0-based page offset."
                    },
                    "yearTo": {
                      "type": "integer",
                      "description": "Latest filing year (inclusive)."
                    },
                    "yearFrom": {
                      "type": "integer",
                      "description": "Earliest filing year (inclusive)."
                    },
                    "applicationType": {
                      "type": "string",
                      "description": "Utility | Design | Plant | Reissue."
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "PAYMENT-SIGNATURE required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
        "amount": "9000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "name": "USDC",
          "version": "1",
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
        "amount": "9000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://2s.io/api/law/case-search",
      "tags": [
        "public-records",
        "identifiers",
        "ai-agents",
        "us-gov-data",
        "x402",
        "upto-billing",
        "ai-gateway",
        "agent-infrastructure"
      ],
      "iconUrl": "https://2s.io/icon-512.png",
      "mimeType": "application/json",
      "description": "Search US court opinions (SCOTUS, federal circuits, state appellate/supreme — ~9M opinions). Query by free-text (party names, keywords, docket #, citation). Filter by court slug (e.g., \"scotus\", \"ca9\", \"nysupct\"), filing date range, and order (relevance/dateFiled-desc/dateFiled-asc/citeCount-desc). Returns clusterId, caseName, court, year, docket, reporter citations, citationCount, snippet, canonical URL. Discovery-side complement to case-verify. Backed by CourtListener (Free Law Project); underlying opinions are public domain.",
      "serviceName": "2s"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "q": "xx",
              "court": "example",
              "limit": 10,
              "order": "relevance",
              "filedAfter": "2024-01-01",
              "filedBefore": "2024-01-01"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "queryParams"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "const": "GET"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "q"
                  ],
                  "properties": {
                    "q": {
                      "type": "string",
                      "maxLength": 500,
                      "minLength": 2
                    },
                    "court": {
                      "type": "string"
                    },
                    "limit": {
                      "type": "integer",
                      "default": 10,
                      "maximum": 20,
                      "minimum": 1
                    },
                    "order": {
                      "enum": [
                        "relevance",
                        "dateFiled-desc",
                        "dateFiled-asc",
                        "citeCount-desc"
                      ],
                      "type": "string"
                    },
                    "filedAfter": {
                      "type": "string"
                    },
                    "filedBefore": {
                      "type": "string"
                    }
                  },
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "PAYMENT-SIGNATURE required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
        "amount": "2500",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "name": "USDC",
          "version": "1",
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
        "amount": "2500",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      }
    ],
    "resource": {
      "url": "https://2s.io/api/wikipedia/summary",
      "tags": [
        "public-records",
        "identifiers",
        "ai-agents",
        "us-gov-data",
        "x402",
        "upto-billing",
        "ai-gateway",
        "agent-infrastructure"
      ],
      "iconUrl": "https://2s.io/icon-512.png",
      "mimeType": "application/json",
      "description": "Fetch a Wikipedia article summary in any of 30 supported languages. Returns title, displayTitle, lang, pageId, description, extract (plain text), extractHtml, lead image, canonical URLs, last-modified timestamp, word count, license, and an attribution string. Backed by https://<lang>.wikipedia.org/api/rest_v1/page/summary. Content is CC BY-SA 4.0 with attribution provided.",
      "serviceName": "2s"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "lang": "en",
              "title": "example"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "queryParams"
              ],
              "properties": {
                "type": {
                  "const": "http"
                },
                "method": {
                  "const": "GET"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "title"
                  ],
                  "properties": {
                    "lang": {
                      "enum": [
                        "en",
                        "es",
                        "fr",
                        "de",
                        "it",
                        "pt",
                        "ru",
                        "ja",
                        "zh",
                        "ko",
                        "ar",
                        "nl",
                        "pl",
                        "tr",
                        "sv",
                        "cs",
                        "fi",
                        "da",
                        "no",
                        "el",
                        "he",
                        "hi",
                        "th",
                        "vi",
                        "uk",
                        "id",
                        "ms",
                        "ro",
                        "hu",
                        "simple"
                      ],
                      "type": "string",
                      "default": "en"
                    },
                    "title": {
                      "type": "string",
                      "maxLength": 300,
                      "minLength": 1
                    }
                  },
                  "additionalProperties": false
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/2s-io/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME

30d UPTIME 100%

RESPONSE TIME

AVG RESP 335ms

PRICE (captured 402, USD)

Median across 6 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

price percentile in Data

site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-10 · last up 2026-08-10

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

SITE PILLARS

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

recent checks (18) live · click to expand

TIME STATUS RESP CAUSE

22:56:03 UTC ● OK 261ms

22:40:02 UTC ● OK 348ms

22:24:04 UTC ● OK 317ms

22:08:03 UTC ● OK 246ms

21:52:03 UTC ● OK 247ms

21:36:03 UTC ● OK 397ms

21:20:02 UTC ● OK 466ms

21:04:01 UTC ● OK 265ms

20:48:01 UTC ● OK 280ms

20:32:07 UTC ● OK 248ms

20:16:04 UTC ● SLOW 603ms

20:00:01 UTC ● OK 291ms

19:44:03 UTC ● OK 423ms

19:28:02 UTC ● OK 397ms

19:12:02 UTC ● OK 423ms

18:55:02 UTC ● OK 450ms

18:39:03 UTC ● SLOW 585ms

18:23:03 UTC ● SLOW 569ms

EMBED THIS BADGE

Show that 2s.io is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

status

// HTML

<a href="https://x402-list.com/services/2s-io?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/2s-io.svg" alt="2s.io listed on x402-list" height="28">
</a>

// Markdown

[![2s.io on x402-list](https://x402-list.com/badge/2s-io.svg)](https://x402-list.com/services/2s-io?utm_source=badge&utm_medium=referral&utm_campaign=embed)

// HTML · live uptime variant

<a href="https://x402-list.com/services/2s-io?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/2s-io.svg?data=uptime" alt="2s.io uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

To request delisting, email [email protected] or update your listing at /services/2s-io/update.