Autonomous agent that stacks Bitcoin for people who want to buy BTC and forget about it. Users set a plan once (from $0.10 USDT per installment, hourly to 12h); the agent executes every purchase on-chain on Celo: it pays its execution API via x402 micropayments and swaps USDT to WBTC on Uniswap v3, delivering Bitcoin straight to the user's wallet. Non-custodial: funds stay in the user's wallet; fees ($0.005 + 1%) are hard-capped in the verified contract 0xd03ffeBBCaaA8aA21053eEB0EeAde39EFC504189. Agent-usable: any wallet can create a plan on-chain and any x402 client can pay POST /api/execute to trigger a purchase — permissionless.
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
- 74443315
- chain_id
- 42220
- token_id
- 9665
checked at 2026-08-10T07:06:23.528389Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- elapsed_ms
- 856
- http_status
- 200
- request_url
- https://comprabtc.vercel.app/metadata.json
- scheme
- https
checked at 2026-08-10T07:06:23.528389Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 1818
- body_sha256
- efdc2f6acb0546a707bcac8a31cc975627c0cb4f95b717add77906ad4f455350
- content_type
- application/json; charset=utf-8
checked at 2026-08-10T07:06:23.528389Z
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
- (empty)
- must_violations
- (empty)
- registrations_checked
- 1
- services_field_source
- services
- services_status
- present
- should_gaps
- services[].version
- spec_commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-08-10T07:06:23.528389Z
Claims its identity?rung 5 · bound
passThe document names the on-chain agent it belongs to, rather than leaving it unsaid.
passed
- declared_agent_id
- 9665
- declared_chain
- 42220
- declared_registry
- eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
- match
- true
- registrations_seen
- 1
checked at 2026-08-10T07:06:23.528389Z
Answers?rung 6 · live
passA declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
passed
- endpoints
{"declared":"https://comprabtc.vercel.app","elapsed_ms":458,"final_url":"https://comprabtc.vercel.app/","http_status":20… (992 chars — expand)
{"declared":"https://comprabtc.vercel.app","elapsed_ms":458,"final_url":"https://comprabtc.vercel.app/","http_status":200,"index":0,"kind":"https","name":"web","outcome":"live","probed":true,"probed_url":"https://comprabtc.vercel.app"}, {"declared":"https://comprabtc-production.up.railway.app/api/execute","elapsed_ms":748,"final_url":"https://comprabtc-production.up.railway.app/api/execute","http_status":404,"index":1,"kind":"https","name":"x402-execute-api","outcome":"not_live","probed":true,"probed_url":"https://comprabtc-production.up.railway.app/api/execute"}, {"declared":"eip155:42220:0x6Bd5c303b2ed7E264C1Ce9D3592457292a1F1c43","index":2,"kind":"caip10","name":"agentWallet","probed":false}, {"declared":"https://comprabtc-production.up.railway.app/","elapsed_ms":643,"final_url":"https://comprabtc-production.up.railway.app/","http_status":404,"index":3,"kind":"https","name":"OASF","outcome":"not_live","probed":true,"probed_url":"https://comprabtc-production.up.railway.app/"}- endpoints_answered_not_live
- 2
- endpoints_declared
- 4
- endpoints_live
- 1
- endpoints_our_error
- 0
- endpoints_payment_gated
- 0
- endpoints_probeable
- 3
- endpoints_probed
- 3
- endpoints_refused
- 0
checked at 2026-08-10T07:07:52.226139Z
Has feedback?rung 7 · attested
failAt least one on-chain feedback entry names this agent.
did not pass
- distinct_authors
- 0
- feedback_count
- 0
- reason
- no_feedback
checked at 2026-08-10T07:06:23.528389Z
Check it again, now
outside the censusOn-chain snapshot
celo- token id
- 9665
- owner
- 0x6bd5c303b2ed7e264c1ce9d3592457292a1f1c43
- block
- 74,443,315
- observed
- 2026-08-10T07:06:23.531345Z
What the fetch saw
https- scheme
- https
- request url
- https://comprabtc.vercel.app/metadata.json
- http status
- 200
- content type
- application/json; charset=utf-8
- size
- 1,818 bytes
- sha256
- efdc2f6acb0546a707bcac8a31cc975627c0cb4f95b717add77906ad4f455350
- elapsed
- 856 ms
This run
reproducible- run
- 4131a5a1-0461-46ce-b393-bcd825d2113b
- chain
- celo
- pinned block
- 74,443,315
- agents
- 9,765
- started
- 2026-08-10T06:41:13.909696Z
- finished
- 2026-08-10T07:06:42.747601Z
- checker
- 0.7.0 · 55deaa9ce71c025a9199311a53cdc2de236eae53
- spec commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
cargo run -p sweeper -- celo # at block 74443315