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📊 Intel view 📋 Audit JSON 🔄 Changelog
50
A2A A2A 0.3.0 v1.0.0 x402 micropay

Returns the live Bitcoin mempool backlog

bitcoin-mempool-congestion.hergertsynthora.com · SYNTHORA

Returns the live Bitcoin mempool backlog: pending transaction count, total vsize, aggregate fees and a full fee-rate histogram from mempool.space. Powers autonomous agents and agent-to-agent schedulers that time broadcasts around network congestion and estimate clearing time by fee band. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

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Compare public evidence

🔔 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
50/100
grade D · 9 criteria
Uptime
100.0%
52 direct probes · 30d
~214 ms response
Observed inflow · 30d
$0.00
wallet scanned · no inflow
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
4 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

D
Conformance score: 50/100
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 15/15
52/52 probes succeeded (100% 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

4 snapshots drifted 3× Every change to agent-card.json
Agent card snapshots
Captured Hash Snapshot
2026-09-03 04:26:39 current a1832a01f4d0… view →
2026-08-01 21:37:55 5796bc4d8780… view →
2026-07-27 00:30:59 998d60b36a53… view →
2026-07-20 18:07:20 94acdb20e19e… view →
Uptime
100.0%
52 direct probes · 30d
Response
24ms
last direct probe
Skills
1
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 Self-declared · /.well-known/x402 Dispute or improve this rating
Endpoint Price Currency
https://bitcoin-mempool-congestion.hergertsynthora.com/service —
Settlement wallet: 0x10800a5a5b9d72251566ec651e862a8b4b427de0 on Base · basescan ↗
Observed on-chain inflow verified on-chain
Last 7d
$0.00
0 transfers · synced 2026-10-24
Last 30d
$0.00
0 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.
Daily 30-day observed-inflow history
2026-09-25 2026-10-25
Last 30 days · 90 days with Pro Peak 30-day total: $0.00 Data points: 31 Total tx (30d window): 0
Payment authenticity evidence confidence How we measure this →
insufficient_evidence_of_independent_payers 1/5

Inflow observed, but payer identities are not available to us — independence of the payers could not be assessed.

Assessed window
30d
1 active of 1 observed
Inflow assessed
$0.14
14 transactions
Payer identities
not held
3 evidence caveats
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. Derived from agent_revenue_daily, agents.payment_wallet. Measured 2026-08-30.
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 cardhttps://bitcoin-mempool-congestion.hergertsynthora.com/.well-known/agent-card.json
Providerhttps://hergertsynthora.com
About this provider off-card enrichment
SSL certificate
ZeroSSL GmbH
expires 2026-10-09
Discovered via
submitted recrawl_hot recrawl_warm

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 mempool congestion

Returns the live Bitcoin mempool backlog: pending transaction count, total vsize, aggregate fees and a full fee-rate histogram from mempool.space. Powers autono…

canonical Bitcoin Fee Estimation match 88%
bitcoinmempoolcongestionx402synthora

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-10-25 05:49:34 200 — 24ms
2026-10-24 15:31:32 200 — 131ms
2026-10-24 03:11:08 200 — 34ms
2026-10-23 14:06:44 200 — 22ms
2026-10-23 02:19:25 200 — 22ms
2026-10-22 12:56:48 200 — 26ms
2026-10-21 23:40:48 200 — 23ms
2026-10-21 10:22:49 200 — 65ms
2026-10-20 21:34:31 200 — 105ms
2026-10-20 03:51:39 200 — 23ms

Who's calling this agent 30d

8 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3
OAI-SearchBot 6 (75%)
PerplexityBot (crawler) 1 (12%)
Web browser 1 (12%)
Caller geography · top 3
US 7
SG 1
Via which API surface · top 3
web 8

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.

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SYNTHORA bitcoin-fees: Bitcoin fee tiers in sat/vB (fastest/half-hour/hour/economy/minimum) plus current block height. Source: mempool.space
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Embed your Agenstry badge

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Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/bitcoin-mempool-congestion.hergertsynthora.com.svg)](https://agenstry.com/agents/bitcoin-mempool-congestion.hergertsynthora.com)
[![Verified Business](https://agenstry.com/badge/bitcoin-mempool-congestion.hergertsynthora.com/identity.svg)](https://agenstry.com/agents/bitcoin-mempool-congestion.hergertsynthora.com)
[![Uptime](https://agenstry.com/badge/bitcoin-mempool-congestion.hergertsynthora.com/uptime.svg)](https://agenstry.com/agents/bitcoin-mempool-congestion.hergertsynthora.com)
[![A2A version](https://agenstry.com/badge/bitcoin-mempool-congestion.hergertsynthora.com/protocol.svg)](https://agenstry.com/agents/bitcoin-mempool-congestion.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": "Returns the live Bitcoin mempool backlog",
  "description": "Returns the live Bitcoin mempool backlog: pending transaction count, total vsize, aggregate fees and a full fee-rate histogram from mempool.space. Powers autonomous agents and agent-to-agent schedulers that time broadcasts around network congestion and estimate clearing time by fee band. First 3 calls FREE per wallet \u2014 send header X-WALLET: 0x<addr>. No charge on upstream failure.",
  "url": "https://bitcoin-mempool-congestion.hergertsynthora.com/service",
  "preferredTransport": "HTTP+JSON",
  "additionalInterfaces": [
    {
      "url": "https://bitcoin-mempool-congestion.hergertsynthora.com/service",
      "transport": "HTTP+JSON"
    },
    {
      "url": "https://bitcoin-mempool-congestion.hergertsynthora.com/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_mempool_congestion",
      "name": "bitcoin mempool congestion",
      "description": "Returns the live Bitcoin mempool backlog: pending transaction count, total vsize, aggregate fees and a full fee-rate histogram from mempool.space. Powers autonomous agents and agent-to-agent schedulers that time broadcasts around network congestion and estimate clearing time by fee band. First 3 calls FREE per wallet \u2014 send header X-WALLET: 0x<addr>. No charge on upstream failure.",
      "tags": [
        "bitcoin",
        "mempool",
        "congestion",
        "x402",
        "synthora",
        "m2m",
        "a2a"
      ],
      "examples": [
        "{}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "inputSchema": {
        "type": "object",
        "properties": {
          "payload": {
            "type": "string",
            "description": "payload"
          },
          "keys": {
            "type": "string",
            "description": "keys"
          },
          "caller": {
            "type": "string",
            "description": "caller"
          },
          "provides": {
            "type": "string",
            "description": "provides"
          }
        },
        "required": [
          "payload",
          "keys",
          "caller",
          "provides"
        ]
      }
    }
  ],
  "securitySchemes": {
    "x402": {
      "type": "http",
      "scheme": "x402",
      "description": "HTTP 402 micropayment. 1000 atomic USDC on eip155:8453."
    }
  },
  "security": [
    {
      "x402": []
    }
  ],
  "x402": {
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "payTo": "0x6D9F318463168fF637b50E5b9a21392e97c7c167",
    "resource": "https://bitcoin-mempool-congestion.hergertsynthora.com/service"
  },
  "mcp": {
    "endpoint": "https://bitcoin-mempool-congestion.hergertsynthora.com/mcp",
    "transport": "http-jsonrpc"
  }
}