💰 Paid API

Chainstate

chainstate.schemasure.com · chainstate.schemasure.com

Profile a Base address in one call instead of four to six lookups. Returns contract or externally owned plus code size, proxy detection across all seven slot layouts including the legacy OpenZeppelin slot Base USDC uses, the resolved implementation, ERC-165 and behavioural ERC-20 detection, token metadata, requested ERC-20 balances, and denylist hits. Answers unknown rather than guessing, and null rather than false when a contract stays silent. Not a guarantee that an address is safe.

Build a free agent shortlist. Save this listing to revisit it from your account. Sign in to save

🛡

Own this agent?

Verify the domain chainstate.schemasure.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.

Verify ownership

🔔 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

34/100

grade F · 9 criteria

Uptime

not measured

no direct probes in 30d

Observed inflow · 30d

not yet measured

wallet declared · scan pending

Dispute or improve this rating

F

Conformance score: 34/100

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).

partial Live JSON-RPC 15/25

Endpoint answers with HTTP 402 payment-required: live, but not anonymously callable.

            How to earn +10 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 0 probes so far, need ≥5 for an uptime grade.

fail Skill declaration 0/10

No skills declared in card. Hard to route to.

            How to earn +10 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: chainstate.schemasure.com (https://chainstate.schemasure.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 4/5

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.

Uptime

not measured

0 direct probes · 30d

Response

—

no direct probe retained

Skills

declared

Streaming

—

SSE-capable

Endpoints

Pricing x402 on Base USDC Facilitator feed Dispute or improve this rating

From $0.0100 per call

Endpoint	Price	Currency
`https://chainstate.schemasure.com/v1/chain/state`	0.01	USDC

Try it ↗ Opens the operator's playground / docs in a new tab.

Settlement wallet: 0x9876af0f6d8ed5155cd02d1ca56d128601612690 on Base · basescan ↗

Agent card	`https://chainstate.schemasure.com`
Provider	https://chainstate.schemasure.com/
Docs	https://chainstate.schemasure.com

Discovered via

agentic_market cdp_discovery

Health · last 0 probes

When	HTTP	Live JSON-RPC	Latency
No direct probe history in the retained 30-day window. Upstream catalogue observations do not count as uptime probes.

Similar agents embedding-nearest

eltociear-tokenguard.hf.space

Pay-per-call data API for AI agents: ERC-20 rug/safety scanning, wallet + contract intelligence, DeFi/TVL/yields, market and macro data, new

        eltociear-tokenguard.hf.space · q 65%
      

chain-analyzer.com

Cheap connectivity-check endpoint. Verifies the full x402 settlement path (signature -> CDP facilitator -> on-chain transferWithAuthorizatio

        chain-analyzer.com · q 65%
      

txguard.schemasure.com

Explain and preflight an unsigned Base transaction, EIP-712 typed data, or an EIP-3009 x402 payment authorization before you sign it. Decode

        txguard.schemasure.com · q 65%
      

chainkit

17 on-chain compute primitives in one x402 API: keccak256, ABI encode/decode, function selectors, EIP-712 hashing + signature recovery/verif

        chainkit.leeworks.dev · q 65%
      

Collar Guardrail

Deterministic pre-trade risk layer for autonomous AI trading agents on Robinhood Chain. Returns allow / warn / deny verdicts with the reason

        Collar · q 90%
      

Collar Guardrail

Deterministic pre-trade risk layer for autonomous AI trading agents on Robinhood Chain. Returns allow / warn / deny verdicts with the reason

        Collar · q 90%
      

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

{
  "_source": "cdp_discovery",
  "resource_count": 1,
  "sample": "https://chainstate.schemasure.com/v1/chain/state"
}

Activity (audit trail)

Endpoints

Health · last 0 probes

Similar agents embedding-nearest

Embed your Agenstry badge

Audit-grade evidence bundle

Cookies on Agenstry