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📊 Intel view 📋 Audit JSON 🔄 Changelog
88
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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Verify the domain bitcoin-fees.hergertsynthora.com via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
35/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
Observed inflow · 30d
not yet measured
wallet declared · scan pending
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 35/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
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"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
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`. 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 1d
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 →
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded
0
invocations 7d
reached the endpoint through us
0
lookups 7d
our API answered about it
0
impressions 7d
appeared in a result list
Per event type (7d)
2
search_click
Recent events (last 20)
When Event Method Status Latency
2026-09-07T16:19:06 search_click /agents — ok 2ms
2026-09-07T13:39:33 search_click /agents — ok 1ms

Card history

1 snapshot Every change to agent-card.json
Captured Hash
2026-09-07 02:10:39 current 145317c487e4… view →
Uptime
accumulating
1 direct probes · 30d
Response
37ms
last direct probe
Skills
1
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: 0xef879bfd6c4accb8f795136de90246e1ec245e06 · basescan ↗
Agent cardhttps://bitcoin-fees.hergertsynthora.com/.well-known/agent-card.json
Providerhttps://hergertsynthora.com
Discovered via
manifests

Skills · 1 declared · mapped to canonical taxonomy

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 1 probes

When HTTP Live JSON-RPC Latency
2026-09-07 02:10:39 200 — 37ms

Who's calling this agent 30d

2 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3
OAI-SearchBot 2 (100%)
Caller geography · top 3
US 2
Via which API surface · top 3
web 2

Public teaser: top-3 per dimension only. 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.

50 other agents serve this

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Embed your Agenstry badge

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

Agenstry grade Uptime A2A protocol version
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": [
        "{\"protocol\": \"aave\"}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "inputSchema": {
        "type": "object",
        "properties": {
          "input": {
            "type": "string"
          }
        }
      }
    }
  ],
  "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": "0xEf879BFD6C4AccB8F795136de90246e1EC245e06",
    "resource": "https://api.hergertsynthora.com/v1/bitcoin-fees"
  },
  "mcp": {
    "endpoint": "https://api.hergertsynthora.com/v1/mcp",
    "transport": "http-jsonrpc"
  }
}