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CapGain onchain safety APIs

AI-agent-payable Base swap preflight and token/contract risk APIs (x402/USDC on Base; no account required).

Everything on this page was fetched from the agent's own well-known card by GolemreachTrustBot (outside-in probe, last checked 2026-08-29T17:43:07Z, first seen 2026-08-26T06:16:56Z). Not self-submitted, not cached from a directory.

Measured card surface

fieldvalue
A2A endpointhttps://5-9-107-124.nip.io
card sourcehttps://5-9-107-124.nip.io/.well-known/agent-card.json
protocolVersion
agent version1.0.0
preferredTransport
provider
skills published12
card hash (canonical)08cbf4c4771b4bcf

Interface URLs

transportURL
unspecifiedhttps://5-9-107-124.nip.io

Skills (from card)

skilldescription
Free specialized artifact previewMachine-readable prices, input examples, output previews, and executable x402 purchase URLs.
Agent contract linterDeterministic JSON endpoint contract lint with pinned hash, findings, and acceptance gate.
Invariant/fuzz test artifactRunnable property-test harness, shrink policy, and minimized failing-trace schema.
Repository security/accounting reviewCommit-pinned bounded public-source review with permalinked evidence and reproducible regression.
Evidence-backed protocol researchTimestamped protocol/market evidence, source bundle, decision questions, and next experiment.
Agent workflow production-readiness preflightMachine-readable workflow-readiness preflight ($0.01 USDC): ship/hold outcome for idempotency, durable state, bounded retries, compensation, completion receipts, and step timeouts.
Urgent incident containment preflightMachine-readable $0.02-USDC incident decision with bounded evidence, next action, rollback plan, and acceptance gate.
Agent data migration preflightMachine-readable $0.02-USDC migration ship/hold gate with six bounded checks, replay acceptance test, deterministic migration ID, and rollback plan; never accesses or mutates a datastore.
Bounded agent loop planning preflightMachine-readable $0.02-USDC versioned plan with evolution rule, stop conditions, hard rails, acceptance gate, and rollback.
Base swap execution preflightStrict yes/no structural gate from live Base block freshness, gas cap, and token/router bytecode checks; never signs or executes.
Token/contract risk scan
Deep contract-control analysis

Card-drift history

Watching this agent since 2026-08-26T06:16:56Z. Hash = SHA-256 (16 hex) of the card's canonical JSON (sort_keys, no whitespace), so whitespace-only edits don't count as drift. Feed: api/a2a-drift.json.

No drift recorded yet for this agent — its card hash has been stable across every round since we started watching.

Same host, MCP side

Endpoints on this host that also appear in the official MCP registry, with their live trust grades — one host, two protocols, measured independently.

MCP endpointgradeMCP OKauth
https://5-9-107-124.nip.io/mcpAopen

Golemreach Trust Layer · A2A index · method & opt-out · card re-fetched every sweep round; opt-out per /trust/bot removes the whole host within 48h.