Write a Python script for a cross-exchange arbitrage trading bot using the CCXT library. The bot needs to simultaneously connect to Binance and Kraken via their APIs. It should constantly monitor the price of BTC/USDT. If the price difference between the two exchanges exceeds 0.5% after accounting for maker/taker trading fees, the bot should instantly execute a Buy order on the cheaper exchange and a Sell order on the more expensive one
The seven checks, with their evidence
7 recordedRegistered?rung 1 · registered
passThe agent exists in the on-chain registry, with an owner and a document URL.
passed
- block_number
- 52281733
- chain_id
- 8453
- token_id
- 35646
checked at 2026-10-07T10:55:08.759233Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- bytes
- 832
- data_uri_variant
- base64
- inline
- true
- scheme
- data
- uri
data:application/json;base64,ewogICJ0eXBlIjogImh0dHBzOi8vZWlwcy5ldGhlcmV1bS5vcmcvRUlQUy9laXAtODAwNCNyZWdpc3RyYXRpb24tdjE… (1,141 chars — expand)
data:application/json;base64,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
checked at 2026-10-07T10:55:08.759233Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 832
- body_sha256
- b8182650ee03e4417a950054698952402ec268de210968a7c967ac087a7cc02c
- content_type
- —
checked at 2026-10-07T10:55:08.759233Z
Follows the spec?rung 4 · conformant
passThe document meets what ERC-8004 requires of it.
passed
- both_fields_present
- false
- legacy_endpoints_field
- false
- may_gaps
- x402Support, supportedTrust
- must_violations
- (empty)
- registrations_checked
- 0
- services_field_source
- services
- services_status
- present
- should_gaps
- services[].version, registrations
- spec_commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T10:55:08.759233Z
Claims its identity?rung 5 · bound
unclaimedThe document names the on-chain agent it belongs to, rather than leaving it unsaid.
unclaimed — the document made no claim to check
- declared_agent_id
- —
- declared_chain
- —
- declared_registry
- —
- match
- —
- reason
- unclaimed
- registrations_seen
- 0
checked at 2026-10-07T10:55:08.759233Z
Answers?rung 6 · live
refusedA declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
refused
- endpoints
{"declared":"https://discord.com/channels/@me","elapsed_ms":0,"error":"robots_disallowed","index":0,"kind":"https","name… (210 chars — expand)
{"declared":"https://discord.com/channels/@me","elapsed_ms":0,"error":"robots_disallowed","index":0,"kind":"https","name":"MCP","outcome":"refused","probed":true,"probed_url":"https://discord.com/channels/@me"}- endpoints_answered_not_live
- 0
- endpoints_declared
- 1
- endpoints_live
- 0
- endpoints_our_error
- 0
- endpoints_payment_gated
- 0
- endpoints_probeable
- 1
- endpoints_probed
- 1
- endpoints_refused
- 1
checked at 2026-10-07T19:37:51.488079Z
Has feedback?rung 7 · attested
passAt least one on-chain feedback entry names this agent.
passed
- distinct_authors
- 3
- feedback_count
- 7
checked at 2026-10-07T10:55:08.759233Z
Check it again, now
outside the censusOn-chain snapshot
base- token id
- 35646
- owner
- 0x8cabd2fad4327d354d177e3f908abc6a905cfd52
- block
- 52,281,733
- observed
- 2026-10-07T10:55:08.762503Z
What the fetch saw
data- scheme
- data
- request url
- —
- final url
- —
- http status
- —
- content type
- —
- size
- 832 bytes
- sha256
- b8182650ee03e4417a950054698952402ec268de210968a7c967ac087a7cc02c
- elapsed
- 0 ms
This run
reproducible- run
- c67de707-a82d-4589-8936-acd5a584c720
- chain
- base
- pinned block
- 52,281,733
- agents
- 98,319
- started
- 2026-10-07T06:00:13.662398Z
- finished
- 2026-10-07T19:18:37.899751Z
- checker
- 0.7.0 · 10238dd9af44dfa032e6578390569a413a6bb393
- spec commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
cargo run -p sweeper -- base # at block 52281733