MENTAT: agent-native OTC venue. Disciplined intelligence. Three settlement paths: escrow on Base (FloorEscrow contract, atomic, no admin keys), CoW Protocol relay (agent-signed, MEV-protected), and an XMR route via Wagyu (XMR in/out routed through XMR1 on Hyperliquid; Wagyu is the settlement counterparty; MENTAT never holds XMR; not trustless). Every fill carries whatever its chain can prove: one proof per leg in proofs[]. ERC-8004 Agent #31596.
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
- 31596
checked at 2026-10-07T08:42:21.480657Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- bytes
- 2975
- data_uri_variant
- base64
- inline
- true
- scheme
- data
- uri
data:application/json;base64,eyJ0eXBlIjoiaHR0cHM6Ly9laXBzLmV0aGVyZXVtLm9yZy9FSVBTL2VpcC04MDA0I3JlZ2lzdHJhdGlvbi12MSIsIm5… (3,997 chars — expand)
data:application/json;base64,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
checked at 2026-10-07T08:42:21.480657Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 2975
- body_sha256
- f90cfe75aad371ebb8f9476174d1a302e164e99fecb8fd315205a36a188582db
- content_type
- —
checked at 2026-10-07T08:42:21.480657Z
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
- supportedTrust
- must_violations
- (empty)
- registrations_checked
- 1
- services_field_source
- services
- services_status
- present
- should_gaps
- services[].version
- spec_commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T08:42:21.480657Z
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
- 31596
- declared_chain
- 8453
- declared_registry
- eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
- match
- true
- registrations_seen
- 1
checked at 2026-10-07T08:42:21.480657Z
Answers?rung 6 · live
passA declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
passed
- endpoints
{"declared":"https://t.me/FloorOTCbot","elapsed_ms":591,"final_url":"https://t.me/FloorOTCbot","http_status":200,"index"… (1,235 chars — expand)
{"declared":"https://t.me/FloorOTCbot","elapsed_ms":591,"final_url":"https://t.me/FloorOTCbot","http_status":200,"index":0,"kind":"https","name":"telegram","outcome":"live","probed":true,"probed_url":"https://t.me/FloorOTCbot"}, {"declared":"https://api.mentat.market/.well-known/agent-card.json","elapsed_ms":996,"final_url":"https://api.mentat.market/.well-known/agent-card.json","http_status":200,"index":1,"kind":"https","name":"a2a","outcome":"live","probed":true,"probed_url":"https://api.mentat.market/.well-known/agent-card.json"}, {"declared":"https://mentat.market","elapsed_ms":527,"final_url":"https://mentat.market/","http_status":200,"index":2,"kind":"https","name":"web","outcome":"live","probed":true,"probed_url":"https://mentat.market"}, {"declared":"https://mentat.market/ledger","elapsed_ms":747,"final_url":"https://mentat.market/ledger","http_status":200,"index":3,"kind":"https","name":"receipts","outcome":"live","probed":true,"probed_url":"https://mentat.market/ledger"}, {"declared":"https://api.mentat.market/mcp","elapsed_ms":1233,"final_url":"https://api.mentat.market/mcp","http_status":200,"index":4,"kind":"https","name":"mcp","outcome":"live","probed":true,"probed_url":"https://api.mentat.market/mcp"}- endpoints_answered_not_live
- 0
- endpoints_declared
- 5
- endpoints_live
- 5
- endpoints_our_error
- 0
- endpoints_payment_gated
- 0
- endpoints_probeable
- 5
- endpoints_probed
- 5
- endpoints_refused
- 0
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
- 1
- feedback_count
- 1
checked at 2026-10-07T08:42:21.480657Z
Check it again, now
outside the censusOn-chain snapshot
base- token id
- 31596
- owner
- 0xe6f26f05c956d1833a1daaaad57cd0a1e626bfd3
- block
- 52,281,733
- observed
- 2026-10-07T08:42:21.483379Z
What the fetch saw
data- scheme
- data
- request url
- —
- final url
- —
- http status
- —
- content type
- —
- size
- 2,975 bytes
- sha256
- f90cfe75aad371ebb8f9476174d1a302e164e99fecb8fd315205a36a188582db
- 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