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📊 Intel view 📋 Audit JSON 🔄 Changelog
76
A2A v1.0.0 x402 micropay

AssayChain Mineral Intelligence

assaychain.com · Quetzal Collective LLC

On-chain critical mineral intelligence API. Returns USGS commodity benchmarks, mining district profiles, and grounded RAG answers synthesized from 195 EAS-attested files (Base mainnet). Every response includes IPFS CIDs and EAS attestation UIDs for verifiable provenance. Core USGS benchmark and price-snapshot endpoints are free (rate-limited); advanced endpoints use x402 micropayments (from $0.10 USDC per call, Base network) — no API keys required.

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Trust score
35/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~87 ms response
Observed inflow · 30d
—
no payment wallet declared
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 5/25
Endpoint replies but body isn't a valid JSON-RPC 2.0 A2A response.
How to earn +20 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 →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 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).
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
pass Skill declaration 10/10
Declares 4 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: Quetzal Collective LLC (https://assaychain.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
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.
⚠ 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

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

1 snapshot Every change to agent-card.json
Captured Hash
2026-10-03 00:58:03 current 71cbc41e9d68… view →
Uptime
accumulating
1 direct probes · 30d
Response
196ms
last direct probe
Skills
4
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.
Try it ↗ Opens the operator's documentation in a new tab.
Agent cardhttps://assaychain.com/.well-known/agent-card.json
Providerhttps://assaychain.com
Docshttps://assaychain.com/api.html
Discovered via
smithery

Skills · 4 declared · mapped to canonical taxonomy

Critical Mineral Commodity Benchmark

Returns USGS Mineral Commodity Summaries benchmark data for one of 20 critical minerals: copper, gold, silver, lithium, cobalt, nickel, manganese, graphite, ant…

canonical Observability and Metrics match 79%
critical mineralsUSGSbenchmarkcommoditiessupply chain
Mining District Profile Lookup

Returns an attested profile for one of 175 USGS mining districts across the US, Canada, and Mexico. Each profile includes district name, state/province, primary…

canonical Agent Profiles match 81%
mining districtsUSGSprovenancesupply chaindomestic sourcing
Daily Mineral Market Context

Attested daily bundle for 20 critical minerals: spot price, Baltic Dry Index, WTI crude, producing-country FX rate, LME warehouse stock. FRED + LBMA sourced. EA…

canonical Market Signals and Strategy match 80%
priceBDIWTIFXLME
Grounded Mineral Intelligence Q&A

Ask any question about critical minerals and receive a grounded answer synthesized by Groq llama-3.1-8b-instant strictly from the 195-file attested corpus (20 c…

canonical Get Microsite Info match 80%
RAGgrounded QAcritical mineralscompliance researchGroq

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-03 00:58:03 200 ✗ 196ms

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Embed your Agenstry badge

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Agenstry grade Uptime
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/assaychain.com.svg)](https://agenstry.com/agents/assaychain.com)
[![Verified Business](https://agenstry.com/badge/assaychain.com/identity.svg)](https://agenstry.com/agents/assaychain.com)
[![Uptime](https://agenstry.com/badge/assaychain.com/uptime.svg)](https://agenstry.com/agents/assaychain.com)
[![A2A version](https://agenstry.com/badge/assaychain.com/protocol.svg)](https://agenstry.com/agents/assaychain.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
{
  "name": "AssayChain Mineral Intelligence",
  "description": "On-chain critical mineral intelligence API. Returns USGS commodity benchmarks, mining district profiles, and grounded RAG answers synthesized from 195 EAS-attested files (Base mainnet). Every response includes IPFS CIDs and EAS attestation UIDs for verifiable provenance. Core USGS benchmark and price-snapshot endpoints are free (rate-limited); advanced endpoints use x402 micropayments (from $0.10 USDC per call, Base network) \u2014 no API keys required.",
  "url": "https://assaychain.com/api",
  "provider": {
    "organization": "Quetzal Collective LLC",
    "url": "https://assaychain.com"
  },
  "version": "1.0.0",
  "documentationUrl": "https://assaychain.com/api.html",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "authentication": {
    "schemes": [
      "x402"
    ],
    "credentials": null,
    "_x402": {
      "network": "eip155:8453",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x750977976Ab85A4Ce5AAbb2e1a9fc80a633f2769",
      "priceUsd": "0.10",
      "docs": "https://assaychain.com/api.html#x402"
    }
  },
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "benchmark-query",
      "name": "Critical Mineral Commodity Benchmark",
      "description": "Returns USGS Mineral Commodity Summaries benchmark data for one of 20 critical minerals: copper, gold, silver, lithium, cobalt, nickel, manganese, graphite, antimony, gallium, germanium, platinum_group, rare_earths, tellurium, tin, titanium, tungsten, uranium, vanadium, zinc. Response includes spot price, grade benchmarks, production by country, recovery benchmarks, chemistry penalty elements, IPFS CID, and EAS attestation UID on Base. Free (rate-limited).",
      "tags": [
        "critical minerals",
        "USGS",
        "benchmark",
        "commodities",
        "supply chain",
        "EAS attestation",
        "IPFS",
        "UFLPA",
        "EU Battery Regulation",
        "ESG"
      ],
      "examples": [
        "Get the copper benchmark \u2014 mine output, reserves, spot price, and EAS attestation UID",
        "What is the USGS lithium reserve estimate and top producing countries?",
        "Show me the cobalt benchmark for UFLPA sourcing evidence"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "district-lookup",
      "name": "Mining District Profile Lookup",
      "description": "Returns an attested profile for one of 175 USGS mining districts across the US, Canada, and Mexico. Each profile includes district name, state/province, primary commodities, known deposits, historical production context, IPFS CID, and EAS attestation UID on Base. Useful for supply-chain provenance tracing, UFLPA origin verification, and DoD/DFC domestic sourcing assessments. $0.50 USDC per call via x402.",
      "tags": [
        "mining districts",
        "USGS",
        "provenance",
        "supply chain",
        "domestic sourcing",
        "UFLPA",
        "DoD",
        "DFC",
        "EAS attestation",
        "IPFS"
      ],
      "examples": [
        "Look up the Bingham Canyon district profile for copper sourcing evidence",
        "Get the Carlin Trend district attestation for gold origin verification",
        "What mining districts cover lithium in Nevada?"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "price-snapshot",
      "name": "Daily Mineral Market Context",
      "description": "Attested daily bundle for 20 critical minerals: spot price, Baltic Dry Index, WTI crude, producing-country FX rate, LME warehouse stock. FRED + LBMA sourced. EAS-attested weekly on Base. Free (rate-limited).",
      "tags": [
        "price",
        "BDI",
        "WTI",
        "FX",
        "LME",
        "market-context",
        "ESG",
        "supply-chain",
        "FRED",
        "LBMA"
      ],
      "examples": [
        "What is today's copper price with BDI and WTI context?",
        "Get gold market context for ESG report dated 2026-05-29"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "ask-grounded",
      "name": "Grounded Mineral Intelligence Q&A",
      "description": "Ask any question about critical minerals and receive a grounded answer synthesized by Groq llama-3.1-8b-instant strictly from the 195-file attested corpus (20 commodity JSONs + 175 district profiles). Each answer cites the source passages by IPFS CID. Useful for compliance research, procurement due diligence, and sourcing decision support. $0.10 USDC per call via x402. Idempotent \u2014 replaying the same payment header returns the same cached answer.",
      "tags": [
        "RAG",
        "grounded QA",
        "critical minerals",
        "compliance research",
        "Groq",
        "LLM",
        "EAS attestation",
        "IPFS provenance",
        "x402"
      ],
      "examples": [
        "What is the US copper mine output and who are the top global producers?",
        "Which commodities have the highest supply concentration risk based on USGS data?",
        "What are the penalty elements for copper smelter contracts and what thresholds apply?"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ]
}