x402 List

x402 Protocol Service Directory

Mycelia Signal

Data PAYMENT-READY

payment-ready until 2026-09-27

Signed cryptographic price oracle. Ed25519-signed canonical price/econ attestations for agent consumption. 38 price pairs + 19 econ indicators.

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

measured since 2026-03-01 (start of our harvest window) · $747.07 all-time · settled via coinbase

BASE URL https://api.myceliasignal.com WEBSITE https://myceliasignal.com ENDPOINTS 2 NETWORK Base ASSET USDC MEMBER SINCE 2026-02-05 MONITORED SINCE 2026-04-15

VERDICT

ranking generation 3

solid 87/100 #51 of 300 in Data by measured score

What the score read on this service: status online, 99.9% uptime 30d, 914ms response p95, x402 compliance 14 of 14, $0.01 price against the category, on-chain traction measured. 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 300 listings, this one among them. That set is wider than the 300 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
StableEnrich strong 95 100% $1.9k
glim.sh strong 95 100% $49.26
SniperX•x402 strong 95 100% $380.21
cn402 strong 94 100% $37.29
API Acre solid 92 99.5% $31.95
5 of 299 other ranked services in Data · see the whole category

ASSESSMENT

updated 6h 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
99.8%
uptime 30d
99.9%
uptime 90d
100%
response p95
914ms
avg response
589ms
total checks
7,215

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 (p59 in Data)
price (min)
$0.01
category percentile (min)
p59 in Data
endpoints / prices
2 / 1
model
flat
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
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

traction $28.21 30d · 34 buyers
volume 30d
$28.21
buyers 30d
34
settlements 30d
932
measured since
2026-03-01 (start of our harvest window)
last settlement
2026-09-20
top buyer share
70% of 30d volume
trend 7d vs 30d
1.38x the 30d daily rate
networks
eip155:8453
volume all-time
$747.07
settlements all-time
10,157
median settlement 30d
$0.01
max settlement 30d
$1.00
settled via
coinbase ($28.21, 932 tx)

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.

WHAT IT DOES

ai-derived

Provides signed price oracles for cryptocurrency pairs like BTC/USD and ETH/USD

category
price-oracle
in
path
price-oraclecryptocurrencydata-verification

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 /oracle/price/btc/usd BTC/USD signed price oracle $0.01 Base USDC header
GET /oracle/price/eth/usd ETH/USD signed price oracle $0.01 Base USDC header
2 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /oracle/price/btc/usd returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://api.myceliasignal.com/oracle/price/btc/usd'
// 402 response (captured by monitor) · 2 payloads · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xD593832Ce9C2B13B192ba50B55dd9AF44e96700d",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.myceliasignal.com/oracle/price/btc/usd",
      "mimeType": "application/json",
      "description": "Real-time Bitcoin price in USD, aggregated from 9 exchanges including Binance, Coinbase and Kraken — Ed25519 signed attestation"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "pair": "BTCUSD",
              "price": "81500.00",
              "method": "median",
              "sources": [
                "binance",
                "coinbase",
                "kraken",
                "bitstamp",
                "gemini",
                "okx",
                "bitfinex",
                "bullish",
                "gateio"
              ]
            }
          }
        },
        "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",
                  "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": "0xD593832Ce9C2B13B192ba50B55dd9AF44e96700d",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.myceliasignal.com/oracle/price/eth/usd",
      "mimeType": "application/json",
      "description": "Real-time Ethereum price in USD, aggregated from 9 exchanges including Binance, Coinbase and Kraken — Ed25519 signed attestation"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {}
          },
          "output": {
            "type": "json",
            "example": {
              "pair": "ETHUSD",
              "price": "2330.00",
              "method": "median",
              "sources": [
                "binance",
                "coinbase",
                "kraken",
                "bitstamp",
                "gemini",
                "okx",
                "bitfinex",
                "bullish",
                "gateio"
              ]
            }
          }
        },
        "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",
                  "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/mycelia-signal/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
08-22 · uptime 100.0% · 475ms avg08-23 · uptime 100.0% · 456ms avg08-24 · uptime 100.0% · 479ms avg08-25 · uptime 100.0% · 557ms avg08-26 · uptime 100.0% · 668ms avg08-27 · uptime 100.0% · 669ms avg08-28 · uptime 100.0% · 589ms avg08-29 · uptime 100.0% · 704ms avg08-30 · uptime 100.0% · 732ms avg08-31 · uptime 100.0% · 478ms avg09-01 · uptime 100.0% · 733ms avg09-02 · uptime 100.0% · 617ms avg09-03 · uptime 100.0% · 641ms avg09-04 · uptime 100.0% · 634ms avg09-05 · uptime 100.0% · 730ms avg09-06 · uptime 100.0% · 693ms avg09-07 · uptime 100.0% · 473ms avg09-08 · uptime 100.0% · 501ms avg09-09 · uptime 100.0% · 540ms avg09-10 · uptime 100.0% · 659ms avg09-11 · uptime 100.0% · 623ms avg09-12 · uptime 100.0% · 534ms avg09-13 · uptime 99.2% · 552ms avg09-14 · uptime 98.8% · 466ms avg09-15 · uptime 100.0% · 478ms avg09-16 · uptime 100.0% · 599ms avg09-17 · uptime 100.0% · 609ms avg09-18 · uptime 100.0% · 640ms avg09-19 · uptime 100.0% · 635ms avg09-20 · uptime 100.0% · 657ms avg08-2209-20
30d UPTIME 99.9%
RESPONSE TIME
08-22 · 475ms avg08-22 · 475ms avg08-23 · 456ms avg08-23 · 456ms avg08-24 · 479ms avg08-24 · 479ms avg08-25 · 557ms avg08-25 · 557ms avg08-26 · 668ms avg08-26 · 668ms avg08-27 · 669ms avg08-27 · 669ms avg08-28 · 589ms avg08-28 · 589ms avg08-29 · 704ms avg08-29 · 704ms avg08-30 · 732ms avg08-30 · 732ms avg08-31 · 478ms avg08-31 · 478ms avg09-01 · 733ms avg09-01 · 733ms avg09-02 · 617ms avg09-02 · 617ms avg09-03 · 641ms avg09-03 · 641ms avg09-04 · 634ms avg09-04 · 634ms avg09-05 · 730ms avg09-05 · 730ms avg09-06 · 693ms avg09-06 · 693ms avg09-07 · 473ms avg09-07 · 473ms avg09-08 · 501ms avg09-08 · 501ms avg09-09 · 540ms avg09-09 · 540ms avg09-10 · 659ms avg09-10 · 659ms avg09-11 · 623ms avg09-11 · 623ms avg09-12 · 534ms avg09-12 · 534ms avg09-13 · 552ms avg09-13 · 552ms avg09-14 · 466ms avg09-14 · 466ms avg09-15 · 478ms avg09-15 · 478ms avg09-16 · 599ms avg09-16 · 599ms avg09-17 · 609ms avg09-17 · 609ms avg09-18 · 640ms avg09-18 · 640ms avg09-19 · 635ms avg09-19 · 635ms avg09-20 · 657ms avg09-20 · 657ms avg08-2209-20
AVG RESP 590ms
PRICE (captured 402, USD)
08-21 · $0.0109-20 · $0.01$0.0108-2109-20

Median across 2 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
08-21 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% checks08-29 uptime: 99.9% compliance: 100% checks08-30 uptime: 99.9% compliance: 100% checks08-31 uptime: 99.9% compliance: 100% checks09-01 uptime: 99.9% compliance: 100% checks09-02 uptime: 99.9% compliance: 100% checks09-03 uptime: 99.9% compliance: 100% checks09-04 uptime: 99.9% compliance: 100% checks09-05 uptime: 100.0% compliance: 100% checks09-06 uptime: 100.0% compliance: 100% checks09-07 uptime: 100.0% compliance: 100% checks09-08 uptime: 100.0% compliance: 100% checks09-09 uptime: 100.0% compliance: 100% checks09-10 uptime: 100.0% compliance: 100% checks09-11 uptime: 100.0% compliance: 100% checks09-12 uptime: 100.0% compliance: 100% checks09-13 uptime: 100.0% compliance: 100% checks09-14 uptime: 99.9% compliance: 100% checks09-15 uptime: 99.9% compliance: 100% checks09-16 uptime: 99.9% compliance: 100% checks09-17 uptime: 99.9% compliance: 100% checks09-18 uptime: 99.9% compliance: 100% checks09-19 uptime: 99.9% compliance: 100% checks09-20 uptime: 99.9% compliance: 100% checksuptimecompliance08-2109-20

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)
08-22 · $0.8908-23 · $0.8808-24 · $0.8808-25 · $0.8308-26 · $0.7308-27 · $108-28 · $108-29 · $0.7508-30 · $0.7708-31 · $0.7709-01 · $109-02 · $0.7209-03 · $0.6709-04 · $0.6809-05 · $0.6809-06 · $109-07 · $0.7109-08 · $0.7909-09 · $0.7409-10 · $0.7409-11 · $0.7009-12 · $0.6909-13 · $0.6609-14 · $0.7209-15 · $0.7609-16 · $0.8209-17 · $0.7909-18 · $409-19 · $109-20 · $0.38peak $408-2209-20
DISTINCT BUYERS
08-22 · 2 buyers08-23 · 2 buyers08-24 · 4 buyers08-25 · 2 buyers08-26 · 3 buyers08-27 · 3 buyers08-28 · 2 buyers08-29 · 2 buyers08-30 · 2 buyers08-31 · 2 buyers09-01 · 2 buyers09-02 · 2 buyers09-03 · 2 buyers09-04 · 2 buyers09-05 · 2 buyers09-06 · 6 buyers09-07 · 2 buyers09-08 · 4 buyers09-09 · 4 buyers09-10 · 9 buyers09-11 · 4 buyers09-12 · 3 buyers09-13 · 1 buyer09-14 · 2 buyers09-15 · 3 buyers09-16 · 3 buyers09-17 · 3 buyers09-18 · 4 buyers09-19 · 3 buyers09-20 · 3 buyerspeak 9 buyers08-2209-20

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-08 · last up 2026-09-20

  • 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
● OK 466ms
● OK 551ms
● OK 799ms
● OK 847ms
● OK 623ms
● OK 546ms
● OK 544ms
● OK 615ms
● OK 612ms
● OK 392ms
● OK 302ms
● OK 817ms
● OK 823ms
● OK 571ms
● OK 613ms
● SLOW 1192ms
● OK 616ms
● OK 769ms

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

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status
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live uptime
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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 ]

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