A2A A2A 0.3.0 v1.0.0 x402 micropay

SYNTHORA bitcoin-fees

bitcoin-fees.hergertsynthora.com · SYNTHORA

SYNTHORA bitcoin-fees: Bitcoin fee tiers in sat/vB (fastest/half-hour/hour/economy/minimum) plus current block height. Source: mempool.space public API, keyless. Bitcoin only.

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🔔 Watch this agent. Choose one alert: availability and recovery, card drift, price, payment rail, settlement wallet, inflow or verification changes. Add more alert types from your account. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch

Trust score

49/100

grade D · 9 criteria

Uptime

95.7%

47 direct probes · 30d

Observed inflow · 30d

Dispute or improve this rating

D

Conformance score: 49/100

D-grade: significant issues, auth-gated, partially broken, or stale.

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).

fail Live JSON-RPC 2/25

Card is valid but has no .url field.

            How to earn +23 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. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.

Docs

partial Protocol version 5/10

Declares pre-1.0 A2A 0.3.0 (Google preview). Upgrade to v1.x for full points.

            How to earn +5 points
          

Declare protocolVersion

Add `"protocolVersion": "1.0"` (Major.Minor, no patch number — §3.6) 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).

pass Uptime track record 14/15

45/47 probes succeeded (96% uptime).

partial Skill declaration 6/10

Declares 1 skill, usable but thin.

            How to earn +4 points
          

Declare your skills

Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags` — `description` and `tags` are REQUIRED on AgentSkill since A2A v1.0, and tags are what discovery filters match on. We canonicalise these into the global skill taxonomy on next probe.

Docs

partial Verified Identity 5/10

Provider declared: SYNTHORA (https://hergertsynthora.com). 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 5/5

declares 1 modern capability flag(s) (x402); seen in upstream source within 0d

partial Security declaration 2/5

Declares 1 security scheme(s) but none use PKCE or mTLS.

            How to earn +3 points
          

Document securitySchemes

Add a `securitySchemes` block to the card describing your auth: `bearer`, `apiKey`, `openIdConnect`, or `mutualTLS`. Routers refuse to call agents that declare no auth model.

Docs

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.

Card history

6 snapshots drifted 5× Every change to agent-card.json

Agent card snapshots
Captured	Hash	Snapshot
2026-10-16 15:55:40 current	`aba5d46d6e32…`	view →
2026-10-13 10:58:42	`476407ff9751…`	view →
2026-10-06 23:10:52	`0998a2549033…`	view →
2026-09-26 20:03:40	`145317c487e4…`	view →
2026-09-11 06:28:32	`9822cae597c0…`	view →
2026-09-07 02:10:39	`145317c487e4…`	view →

Uptime

95.7%

47 direct probes · 30d

Response

71ms

last direct probe

Skills

declared

Streaming

—

SSE-capable

Endpoints

Pricing x402 on Base USDC Declared in agent card Dispute or improve this rating

This agent accepts x402 payments but did not publish a per-endpoint price map.

Settlement wallet: 0x6d9f318463168ff637b50e5b9a21392e97c7c167 on Base · basescan ↗

Observed on-chain inflow verified on-chain

Last 7d

                  $0.04
                

4 transfers · synced 2026-10-24

Last 30d

                  $0.96
                

95 transfers · synced 2026-10-24

Last 90d PRO

Unlock with Pro

90-day total + 90 days of daily history

USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the wallet. Inflow to a wallet, not proof that every transfer was a paid call.

How the last 30 days were settled

$0.13 in the ledger, not classified yet. Each transfer is read once to tell facilitator-settled x402 payments from plain transfers. How we classify

Cross-check: Coinbase's Bazaar reports 17 calls in 30 days to this wallet across 4 listed resources; our ledger observed 52 transfers (0 facilitator-settled) over 29 of 30 scanned days. Different counters; neither is assumed correct.

Daily 30-day observed-inflow history ↓ −$0.87 since 2026-09-25

2026-09-25 2026-10-25

Last 30 days · 90 days with Pro Peak 30-day total: $3.02 Data points: 31 Total tx (30d window): 95

Payment authenticity evidence confidence How we measure this →

concentrated_payers 3/5

Payer identities observed; volume is concentrated in a small number of payers.

Assessed window

30d

14 active of 29 observed

Inflow assessed

$0.90

93 transactions

Payer identities

available

1 evidence caveat

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 2026-10-25.

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 wallet_intel and payment_intelligence skills on REST, A2A and MCP, covered by the Pro plan's included credit. API docs →

Agent card	`https://bitcoin-fees.hergertsynthora.com/.well-known/agent-card.json`
Provider	https://hergertsynthora.com

About this provider off-card enrichment

Domain age

            Registered 2026-06-04
          

via IONOS SE

SSL certificate

ZeroSSL GmbH

expires 2026-10-09

Discovered via

manifests recrawl_warm recrawl_hot

Skills · 1 declared by this agent

These skills are declared by the agent. A taxonomy link appears only when we can classify a skill confidently.

bitcoin fees

SYNTHORA bitcoin-fees: Bitcoin fee tiers in sat/vB (fastest/half-hour/hour/economy/minimum) plus current block height. Source: mempool.space public API, keyless…

canonical Bitcoin Fee Estimation match 88%

bitcoinfeesx402synthoram2m

Health · last 30 probes

When	HTTP	Live JSON-RPC	Latency
2026-10-25 07:40:15	200	—	71ms
2026-10-24 17:16:36	200	—	78ms
2026-10-24 05:53:23	200	—	24ms
2026-10-23 16:07:17	200	—	25ms
2026-10-23 04:01:09	200	—	393ms
2026-10-22 15:03:44	200	—	56ms
2026-10-22 01:39:10	err	—	—
2026-10-21 12:22:19	err	—	—
2026-10-20 23:27:10	err	—	—
2026-10-20 06:12:43	err	—	—

Who's calling this agent 30d

6 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3

Web browser 3 (50%)

Other crawler 2 (33%)

You.com (YouBot) 1 (17%)

Caller geography · top 3

US 3

SG 2

BD 1

Via which API surface · top 3

web 6

Public view: top 3 per dimension. Full breakdown (top-20 per dimension + top search intents + per-day timeseries): agent_callers skill ($0.05/call, $0 on Enterprise). Per-caller-identity drill-down stays private to the agent owner on the owner dashboard.

Cheaper or better alternatives per-skill

      
      ↑ 1 higher quality

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

Bitcoin Fee Estimation payments

25 other agents serve this

↑ Higher quality +13pts

Tereno

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SYNTHORA defidata

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        SYNTHORA · q 84%
      

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Bitcoin fee rates. Current Bitcoin network fee rates in sat/vB for next-block, half-hour, one-hour and economy confirmation, the estimated c

        agent-data-tools.revmesh2074.workers.dev · q 65%
      

SYNTHORA top-crypto

SYNTHORA top-crypto: Top N cryptocurrencies by market cap (default 10, max 50): rank, price, 24h change, volume and market cap in USD. Sourc

        SYNTHORA · q 86%
      

SYNTHORA — M2M Intelligence Mesh

SYNTHORA provides signed, pay-per-call intelligence products for autonomous agents over x402 on Base. The product list is generated from the

        SYNTHORA · q 80%
      

SYNTHORA — M2M Intelligence Mesh

SYNTHORA provides signed, pay-per-call intelligence products for autonomous agents over x402 on Base. The product list is generated from the

        SYNTHORA · q 80%
      

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.

Markdown / HTML snippets

[![Agenstry grade](https://agenstry.com/badge/bitcoin-fees.hergertsynthora.com.svg)](https://agenstry.com/agents/bitcoin-fees.hergertsynthora.com)
[![Verified Business](https://agenstry.com/badge/bitcoin-fees.hergertsynthora.com/identity.svg)](https://agenstry.com/agents/bitcoin-fees.hergertsynthora.com)
[![Uptime](https://agenstry.com/badge/bitcoin-fees.hergertsynthora.com/uptime.svg)](https://agenstry.com/agents/bitcoin-fees.hergertsynthora.com)
[![A2A version](https://agenstry.com/badge/bitcoin-fees.hergertsynthora.com/protocol.svg)](https://agenstry.com/agents/bitcoin-fees.hergertsynthora.com)

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

{
  "protocolVersion": "0.3.0",
  "name": "SYNTHORA bitcoin-fees",
  "description": "SYNTHORA bitcoin-fees: Bitcoin fee tiers in sat/vB (fastest/half-hour/hour/economy/minimum) plus current block height. Source: mempool.space public API, keyless. Bitcoin only.",
  "url": "https://api.hergertsynthora.com/v1/bitcoin-fees",
  "preferredTransport": "HTTP+JSON",
  "additionalInterfaces": [
    {
      "url": "https://api.hergertsynthora.com/v1/bitcoin-fees",
      "transport": "HTTP+JSON"
    },
    {
      "url": "https://api.hergertsynthora.com/v1/a2a",
      "transport": "JSONRPC"
    }
  ],
  "version": "1.0.0",
  "provider": {
    "organization": "SYNTHORA",
    "url": "https://hergertsynthora.com"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "bitcoin_fees",
      "name": "bitcoin fees",
      "description": "SYNTHORA bitcoin-fees: Bitcoin fee tiers in sat/vB (fastest/half-hour/hour/economy/minimum) plus current block height. Source: mempool.space public API, keyless. Bitcoin only.",
      "tags": [
        "bitcoin",
        "fees",
        "x402",
        "synthora",
        "m2m",
        "a2a"
      ],
      "examples": [
        "{}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "inputSchema": {
        "type": "object",
        "properties": {
          "red": {
            "type": "string",
            "const": "bitcoin",
            "description": "Optional Bitcoin-only selector; exact lowercase bitcoin. Omit for Bitcoin. Does not select fee tier."
          },
          "network": {
            "type": "string",
            "const": "bitcoin",
            "description": "Optional Bitcoin-only selector; exact lowercase bitcoin. Omit for Bitcoin. Does not select fee tier."
          }
        },
        "additionalProperties": false
      }
    }
  ],
  "securitySchemes": {
    "x402": {
      "type": "http",
      "scheme": "x402",
      "description": "HTTP 402 micropayment. 10000 atomic USDC on eip155:8453."
    }
  },
  "security": [
    {
      "x402": []
    }
  ],
  "x402": {
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x6D9F318463168fF637b50E5b9a21392e97c7c167",
    "resource": "https://api.hergertsynthora.com/v1/bitcoin-fees"
  },
  "mcp": {
    "endpoint": "https://api.hergertsynthora.com/v1/mcp",
    "transport": "http-jsonrpc"
  }
}

Activity (audit trail)

Card history

Endpoints

Skills · 1 declared by this agent

Health · last 30 probes

Who's calling this agent 30d

Cheaper or better alternatives per-skill

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Audit-grade evidence bundle

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