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📊 Intel view 📋 Audit JSON 🔄 Changelog
81
A2A live JSON-RPC A2A 1.0 v1.0.0

California Bitcoin Research Agent

californiabitcoin.org · Davisville Labs

Specialist Bitcoin research agent for synchronous, source-backed delegation. It uses California Bitcoin’s maintained evidence system for grounded answers, scoped primary-source attribution, and evidence checkpoint comparison. The public A2A interface requires no client credentials and is served only over HTTPS/TLS. Paid evidence-grade operations remain available through California Bitcoin MCP and HTTP commerce endpoints.

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Trust score
81/100
grade B · 9 criteria
Uptime
100.0%
49 direct probes · 30d
~141 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
2 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

B
Conformance score: 81/100
B-grade: working agent with minor gaps (often unsigned cards or thin metadata).
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).
pass Live JSON-RPC 25/25
Endpoint responds to a negotiated A2A SendMessage probe (answers in ~141 ms).
pass Protocol version 10/10
Declares A2A 1.0 with supportedInterfaces[] (current v1 card shape).
info JWS signature 0/10
Card is unsigned (most published agents are).
pass Uptime track record 15/15
49/49 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 3 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: Davisville Labs (https://californiabitcoin.org/). 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 4/5
seen in upstream source within 0d
partial Security declaration 2/5
Declares securityRequirements: [] — deliberately public, no credentials required.
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
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)
1
search_click
Recent events (last 20)
When Event Method Status Latency
2026-10-07T17:46:33 search_click /agents — ok 3ms
2026-09-30T21:04:25 search_click /agents — ok 1ms
2026-09-30T13:39:53 search_click /agents — ok 1ms
2026-09-29T07:19:16 search_click /agents — ok 2ms
2026-09-28T23:39:28 search_click /agents — ok 3ms
2026-09-28T05:37:37 search_click /agents — ok 2ms
2026-09-27T16:01:41 search_click /agents — ok 3ms
2026-09-20T16:52:53 search_click /agents — ok 3ms
2026-09-20T13:39:43 search_click /agents — ok 3ms
2026-09-18T22:46:00 search_click /agents — ok 2ms
2026-09-18T10:25:21 search_impression — 200 ok —
2026-09-18T02:40:01 search_click /agents — ok 8ms
2026-09-13T17:59:12 search_click /agents — ok 1ms
2026-09-13T13:39:33 search_click /agents — ok 1ms
2026-09-12T13:39:33 search_click /agents — ok 1ms
2026-09-12T00:27:17 search_click /agents — ok 1ms

Card history

2 snapshots drifted 1× Every change to agent-card.json
Captured Hash
2026-09-16 01:22:40 current b297a0c360d1… view →
2026-09-11 23:39:56 829d5c33b5d1… view →
Uptime
100.0%
49 direct probes · 30d
Response
88ms
last direct probe
Skills
3
declared
Streaming
—
SSE-capable

Try it

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Endpoints

Pricing x402 Self-declared · /.well-known/x402 Dispute or improve this rating
From $0.1000 per call
Endpoint Price Currency
https://californiabitcoin.org/api/agent/v1/answer-question 1.0 USD
https://californiabitcoin.org/api/agent/v1/verify-claim 0.1 USD
https://californiabitcoin.org/api/agent/v1/evidence-pack 0.15 USD
https://californiabitcoin.org/api/agent/v1/timeline 0.1 USD
https://californiabitcoin.org/api/agent/v1/deep-ground 0.25 USD
https://californiabitcoin.org/api/agent/v1/batch 0.5 USD
Try it ↗ Opens the operator's documentation in a new tab.
Agent cardhttps://californiabitcoin.org/.well-known/agent-card.json
Providerhttps://californiabitcoin.org/
Docshttps://californiabitcoin.org/developers/
About this provider off-card enrichment
SSL certificate
Google Trust Services
expires 2026-12-07
Discovered via
a2a_registry_org recrawl_hot smithery

Skills · 3 declared · mapped to canonical taxonomy

Grounded Bitcoin Research

Delegate a Bitcoin question to California Bitcoin and receive a concise deterministic answer grounded in maintained Bitcoin knowledge, with sources, provenance,…

orphan: no canonical match yet
bitcoinresearchevidenceprovenancegrounding
Bitcoin Primary-Source Attribution

Delegate a historical Bitcoin attribution question. Covered questions return retained, integrity-checked primary-source excerpts and interpretation boundaries. …

orphan: no canonical match yet
bitcoinprimary-sourceshistorysatoshiattribution
Bitcoin Evidence Checkpoint

Compare a previously returned retained-evidence checkpoint with California Bitcoin’s current maintained dossier identity before rerunning research. This is free…

orphan: no canonical match yet
bitcoinevidencecheckpointchange-detectionprovenance

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-10-08 18:05:05 200 ✓ 88ms
2026-10-08 18:05:04 200 ✓ 231ms
2026-10-08 18:01:17 200 ✓ 233ms
2026-10-08 08:29:40 200 ✓ 238ms
2026-10-08 08:29:40 200 ✓ 309ms
2026-10-07 22:21:04 200 ✓ 138ms
2026-10-07 13:19:59 200 ✓ 589ms
2026-10-07 13:19:58 200 ✓ 820ms
2026-10-07 12:19:17 200 ✓ 296ms
2026-10-07 04:09:10 200 ✓ 41ms

Who's calling this agent 30d

16 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3
OAI-SearchBot 11 (69%)
Web browser 2 (12%)
PerplexityBot (crawler) 1 (6%)
Caller geography · top 3
US 14
SG 1
CN 1
Via which API surface · top 3
web 15
rest 1

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.

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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/californiabitcoin.org.svg)](https://agenstry.com/agents/californiabitcoin.org)
[![Verified Business](https://agenstry.com/badge/californiabitcoin.org/identity.svg)](https://agenstry.com/agents/californiabitcoin.org)
[![Uptime](https://agenstry.com/badge/californiabitcoin.org/uptime.svg)](https://agenstry.com/agents/californiabitcoin.org)
[![A2A version](https://agenstry.com/badge/californiabitcoin.org/protocol.svg)](https://agenstry.com/agents/californiabitcoin.org)

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
{
  "name": "California Bitcoin Research Agent",
  "description": "Specialist Bitcoin research agent for synchronous, source-backed delegation. It uses California Bitcoin\u2019s maintained evidence system for grounded answers, scoped primary-source attribution, and evidence checkpoint comparison. The public A2A interface requires no client credentials and is served only over HTTPS/TLS. Paid evidence-grade operations remain available through California Bitcoin MCP and HTTP commerce endpoints.",
  "supportedInterfaces": [
    {
      "url": "https://californiabitcoin.org/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "provider": {
    "organization": "Davisville Labs",
    "url": "https://californiabitcoin.org/"
  },
  "version": "1.0.0",
  "documentationUrl": "https://californiabitcoin.org/developers/",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extendedAgentCard": false
  },
  "securitySchemes": {},
  "securityRequirements": [],
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "text/plain",
    "application/json"
  ],
  "skills": [
    {
      "id": "bitcoin-grounded-research",
      "name": "Grounded Bitcoin Research",
      "description": "Delegate a Bitcoin question to California Bitcoin and receive a concise deterministic answer grounded in maintained Bitcoin knowledge, with sources, provenance, uncertainty, and retained primary-source evidence when covered.",
      "tags": [
        "bitcoin",
        "research",
        "evidence",
        "provenance",
        "grounding"
      ],
      "examples": [
        "What is proof of work?",
        "Who created Bitcoin?",
        "Why is Bitcoin supply limited?"
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "text/plain",
        "application/json"
      ]
    },
    {
      "id": "bitcoin-primary-source-attribution",
      "name": "Bitcoin Primary-Source Attribution",
      "description": "Delegate a historical Bitcoin attribution question. Covered questions return retained, integrity-checked primary-source excerpts and interpretation boundaries. Uncovered attribution questions fail safely instead of substituting a generic topical answer.",
      "tags": [
        "bitcoin",
        "primary-sources",
        "history",
        "satoshi",
        "attribution",
        "evidence"
      ],
      "examples": [
        "Did Satoshi ever describe Bitcoin as anonymous?",
        "Was proof of work invented by Bitcoin?",
        "Did Satoshi invent public-key cryptography?"
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "text/plain",
        "application/json"
      ]
    },
    {
      "id": "bitcoin-evidence-checkpoint",
      "name": "Bitcoin Evidence Checkpoint",
      "description": "Compare a previously returned retained-evidence checkpoint with California Bitcoin\u2019s current maintained dossier identity before rerunning research. This is free and does not authorize payment.",
      "tags": [
        "bitcoin",
        "evidence",
        "checkpoint",
        "change-detection",
        "provenance"
      ],
      "examples": [
        "{\"skillId\":\"bitcoin-evidence-checkpoint\",\"checkpointId\":\"primary-source-dossier:satoshi-anonymity\",\"expectedDigest\":\"sha256:...\"}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "text/plain",
        "application/json"
      ]
    }
  ],
  "iconUrl": "https://californiabitcoin.org/assets/logo-circle.png"
}