x402 List

x402 Protocol Service Directory

Signalis

Data PAYMENT-READY

payment-ready until 2026-09-05

Global intelligence for AI agents on x402: a 4-hourly Master Intelligence digest cross-synthesized from a 20-source roster — each digest reports the exact subset it used in its sourcesUsed field — plus Pulse, AI-business narrative intelligence (lifecycle-staged narratives, per-narrative detail, historical digests, raw content). Current digest is free to poll; history and Pulse settle per call in USDC on Base. Signalis is the dedicated home of this surface after the 2026-07 Moltalyzer product split; Moltalyzer's legacy /api/intelligence and /api/pulse routes permanently 308-redirect here.

Pay from $0.01 to $0.03 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

BASE URL https://api.signalis.dev WEBSITE https://signalis.dev ENDPOINTS 4 NETWORK Base ASSET USDC MEMBER SINCE 2026-07-14 MONITORED SINCE 2026-07-14

VERDICT

ranking generation 3

strong 94/100 #75 of 252 in Data by measured score

What the score read on this service: status online, 99.9% uptime 30d, 824ms response p95, x402 compliance 14 of 14, $0.01 price against the category. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

It is a score inside Data, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 252 listings, this one among them. That set is wider than the 252 the position above is counted against, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

ALTERNATIVES IN DATA

Other Data services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE BAND SCORE UPTIME 30D VOL 30D
WebberSites x402 Data API strong 99 100% ---
API Acre strong 99 99.6% ---
MicroTap strong 99 100% ---
AgentToll strong 99 100% ---
ForgeMesh Utility APIs strong 99 100% ---
5 of 251 other ranked services in Data · see the whole category

ASSESSMENT

updated 2h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 99.9%
uptime 24h
100%
uptime 7d
100%
uptime 30d
99.9%
uptime 90d
100%
response p95
824ms
avg response
233ms
total checks
2,772

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 $0.01 to $0.03 (p58 in Data)
price (min)
$0.01
price (max)
$0.03
category percentile (min)
p58 in Data
category percentile (max)
p50 in Data
endpoints / prices
4 / 3
model
tiered
stability
100%
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
47d
registrar
Namecheap Inc.
hosting
custom
domain created
2026-07-10

Identity facts, not a risk score.

traction ---

This service settles on a network x402-list does not measure yet, so on-chain volume is not counted here. Shown as unmeasured, not zero.

WHAT IT DOES

ai-derived

Signalis provides global intelligence and real-time awareness through synthesized digests and narratives from multiple sources.

category
intelligence-aggregation
in
query params
intelligencedata-synthesisreal-timecross-domain

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /v1/intelligence/history $0.03 Base USDC header
GET /v1/pulse/content/recent $0.02 Base USDC header
GET /v1/pulse/digests $0.03 Base USDC header
GET /v1/pulse/narratives $0.01 Base USDC header
4 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /v1/intelligence/history returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://api.signalis.dev/v1/intelligence/history'
// 402 response (captured by monitor) · 4 payloads · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xf444abc53f5e1e73caec7df64d147ddb119514a0",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.signalis.dev/v1/intelligence/history",
      "mimeType": "application/json",
      "description": "Paid ($0.03 USDC via x402). Historical Master Intelligence digests (1-168 hour lookback) — id, title, executive summary, sources used, processing time, and createdAt provenance per row. Compute-first / settle-after — you are never charged for an error."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "hours": 48,
              "limit": 10
            }
          },
          "output": {
            "type": "json",
            "example": {
              "data": [
                {
                  "id": "clx0master123",
                  "title": "AI Infrastructure Race Accelerates as Macro Uncertainty Builds",
                  "createdAt": "2026-07-09T20:00:00.000Z",
                  "sourcesUsed": [
                    "polymarket",
                    "fred",
                    "github",
                    "moltbook"
                  ],
                  "executiveSummary": "Cross-source signals point to intensifying AI-infrastructure competition...",
                  "processingTimeMs": 48213
                }
              ],
              "count": 2,
              "hours": 48,
              "limit": 10,
              "charged": true,
              "success": true
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "required": [],
                  "properties": {
                    "hours": {
                      "type": "integer",
                      "maximum": 168,
                      "minimum": 1,
                      "description": "Lookback window in hours (1-168)."
                    },
                    "limit": {
                      "type": "integer",
                      "maximum": 50,
                      "minimum": 1,
                      "description": "Max digests to return (1-50)."
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xf444abc53f5e1e73caec7df64d147ddb119514a0",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.signalis.dev/v1/pulse/narratives",
      "mimeType": "application/json",
      "description": "Paid ($0.01 USDC via x402). Active AI-business narratives with lifecycle stage, driving sources, and momentum. Proxied from the Pulse service. Compute-first / settle-after — you are never charged when Pulse is unavailable or returns an error."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "charged": true,
              "narratives": [
                {
                  "id": 4034,
                  "stage": "building",
                  "title": "AI-Native Founder Business Models and Organizational Strategy",
                  "summary": "How founders leverage AI to reshape organizational structure and competitive positioning.",
                  "momentum": 0.71
                }
              ]
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "required": [],
                  "properties": {}
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xf444abc53f5e1e73caec7df64d147ddb119514a0",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.signalis.dev/v1/pulse/digests",
      "mimeType": "application/json",
      "description": "Paid ($0.03 USDC via x402). Historical AI-business narrative digests (?since=N). Proxied from the Pulse service. Compute-first / settle-after — you are never charged when Pulse is unavailable or returns an error."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "since": 1
            }
          },
          "output": {
            "type": "json",
            "example": {
              "charged": true,
              "digests": [
                {
                  "id": 1,
                  "title": "AI Agent Business Models and Infrastructure Emerge Amid Security and Reliability Concerns",
                  "summary": "A surge in discussions around AI agent business models emphasizing extreme scale and token efficiency."
                }
              ]
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "required": [],
                  "properties": {
                    "since": {
                      "type": "integer",
                      "description": "Digest index to fetch items after (poll pattern)."
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xf444abc53f5e1e73caec7df64d147ddb119514a0",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.signalis.dev/v1/pulse/content/recent",
      "mimeType": "application/json",
      "description": "Paid ($0.02 USDC via x402). Raw scraped content items from the last 4 hours across all Pulse sources. Proxied from the Pulse service. Compute-first / settle-after — you are never charged when Pulse is unavailable or returns an error."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "items": [
                {
                  "id": 547916,
                  "title": "That is probably stronger",
                  "source": "reddit",
                  "content": "Discussion excerpt...",
                  "sourceId": "reddit_1usckfm"
                }
              ],
              "charged": true
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "required": [],
                  "properties": {}
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    },
    "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/signalis/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
07-31 · uptime 100.0% · 205ms avg08-01 · uptime 100.0% · 169ms avg08-02 · uptime 98.9% · 194ms avg08-03 · uptime 100.0% · 236ms avg08-04 · uptime 100.0% · 192ms avg08-05 · uptime 100.0% · 269ms avg08-06 · uptime 100.0% · 175ms avg08-07 · uptime 100.0% · 199ms avg08-08 · uptime 100.0% · 234ms avg08-09 · uptime 100.0% · 250ms avg08-10 · uptime 100.0% · 187ms avg08-11 · uptime 100.0% · 165ms avg08-12 · uptime 100.0% · 221ms avg08-13 · uptime 98.9% · 235ms avg08-14 · uptime 100.0% · 234ms avg08-15 · uptime 100.0% · 295ms avg08-16 · uptime 100.0% · 278ms avg08-17 · uptime 100.0% · 251ms avg08-18 · uptime 100.0% · 251ms avg08-19 · uptime 100.0% · 226ms avg08-20 · uptime 100.0% · 248ms avg08-21 · uptime 100.0% · 193ms avg08-22 · uptime 100.0% · 164ms avg08-23 · uptime 100.0% · 154ms avg08-24 · uptime 100.0% · 248ms avg08-25 · uptime 100.0% · 323ms avg08-26 · uptime 100.0% · 303ms avg08-27 · uptime 100.0% · 404ms avg08-28 · uptime 100.0% · 312ms avg07-3108-28
30d UPTIME 99.9%
RESPONSE TIME
07-31 · 205ms avg07-31 · 205ms avg08-01 · 169ms avg08-01 · 169ms avg08-02 · 194ms avg08-02 · 194ms avg08-03 · 236ms avg08-03 · 236ms avg08-04 · 192ms avg08-04 · 192ms avg08-05 · 269ms avg08-05 · 269ms avg08-06 · 175ms avg08-06 · 175ms avg08-07 · 199ms avg08-07 · 199ms avg08-08 · 234ms avg08-08 · 234ms avg08-09 · 250ms avg08-09 · 250ms avg08-10 · 187ms avg08-10 · 187ms avg08-11 · 165ms avg08-11 · 165ms avg08-12 · 221ms avg08-12 · 221ms avg08-13 · 235ms avg08-13 · 235ms avg08-14 · 234ms avg08-14 · 234ms avg08-15 · 295ms avg08-15 · 295ms avg08-16 · 278ms avg08-16 · 278ms avg08-17 · 251ms avg08-17 · 251ms avg08-18 · 251ms avg08-18 · 251ms avg08-19 · 226ms avg08-19 · 226ms avg08-20 · 248ms avg08-20 · 248ms avg08-21 · 193ms avg08-21 · 193ms avg08-22 · 164ms avg08-22 · 164ms avg08-23 · 154ms avg08-23 · 154ms avg08-24 · 248ms avg08-24 · 248ms avg08-25 · 323ms avg08-25 · 323ms avg08-26 · 303ms avg08-26 · 303ms avg08-27 · 404ms avg08-27 · 404ms avg08-28 · 312ms avg08-28 · 312ms avg07-3108-28
AVG RESP 233ms
PRICE (captured 402, USD)
07-30 · $0.02508-29 · $0.025$0.02507-3008-29

Median across 4 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
07-30 uptime: 100.0% compliance: 100% checks07-31 uptime: 100.0% compliance: 100% checks08-01 uptime: 100.0% compliance: 100% checks08-02 uptime: 99.9% compliance: 100% checks08-03 uptime: 99.9% compliance: 100% checks08-04 uptime: 99.9% compliance: 100% checks08-05 uptime: 99.9% compliance: 100% checks08-06 uptime: 100.0% compliance: 100% checks08-07 uptime: 100.0% compliance: 100% checks08-08 uptime: 100.0% compliance: 100% checks08-09 uptime: 100.0% compliance: 100% checks08-10 uptime: 100.0% compliance: 100% checks08-11 uptime: 100.0% compliance: 100% checks08-12 uptime: 100.0% compliance: 100% checks08-13 uptime: 99.9% compliance: 100% checks08-14 uptime: 99.9% compliance: 100% checks08-15 uptime: 99.9% compliance: 100% checks08-16 uptime: 99.9% compliance: 100% checks08-17 uptime: 99.9% compliance: 100% checks08-18 uptime: 99.9% compliance: 100% checks08-19 uptime: 99.9% compliance: 100% checks08-20 uptime: 99.9% compliance: 100% checks08-21 uptime: 99.9% compliance: 100% checks08-22 uptime: 99.9% compliance: 100% checks08-23 uptime: 99.9% compliance: 100% checks08-24 uptime: 99.9% compliance: 100% checks08-25 uptime: 99.9% compliance: 100% checks08-26 uptime: 99.9% compliance: 100% checks08-27 uptime: 99.9% compliance: 100% checks08-28 uptime: 99.9% compliance: 100% checksuptimecompliance07-3008-28

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

PILLARS OVER TIME (measured)

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)
This service settles on a network x402-list does not measure yet, so on-chain volume is not counted here. Shown as unmeasured, not zero.
DISTINCT BUYERS
This service settles on a network x402-list does not measure yet, so distinct on-chain buyers are not counted here. Shown as unmeasured, not zero.

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-07-14 · last up 2026-08-29

  • 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
● SLOW 779ms
● OK 190ms
● OK 147ms
● OK 180ms
● OK 270ms
● OK 153ms
● OK 156ms
● SLOW 571ms
● OK 300ms
● OK 193ms
● OK 166ms
● OK 236ms
● OK 238ms
● SLOW 534ms
● SLOW 662ms
● OK 285ms
● OK 225ms
● OK 338ms

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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 ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/signalis/update.