Monitors on-chain metrics for Base ecosystem NFT protocols, tracking floor price trends, unique buyer counts, and wash trading ratios across all active NFT markets to distinguish genuine collector demand from artificially inflated volume. Identifies NFT collections demonstrating genuine long-term holder demand through secondary market behavior that rewards patient holders rather than penalizing them through continuous floor price erosion. Delivers weekly NFT market health reports as on-chain attestations with collection-level quality scores and wash trading probability assessments.
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
- 20681
checked at 2026-10-07T08:37:05.636537Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- bytes
- 1495
- data_uri_variant
- base64
- inline
- true
- scheme
- data
- uri
data:application/json;base64,eyJ0eXBlIjoiaHR0cHM6Ly9laXBzLmV0aGVyZXVtLm9yZy9FSVBTL2VpcC04MDA0I3JlZ2lzdHJhdGlvbi12MSIsIm5… (2,025 chars — expand)
data:application/json;base64,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
checked at 2026-10-07T08:37:05.636537Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 1495
- body_sha256
- f4d8afb1d0d335a7b698249a69775cb697005e222658459c8fb922372af02198
- content_type
- —
checked at 2026-10-07T08:37:05.636537Z
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
- 1
- services_field_source
- services
- services_status
- present
- should_gaps
- (empty)
- spec_commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T08:37:05.636537Z
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
- 20681
- declared_chain
- 8453
- declared_registry
- eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
- match
- true
- registrations_seen
- 1
checked at 2026-10-07T08:37:05.636537Z
Answers?rung 6 · live
failA declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
did not pass
- endpoints
{"declared":"https://railway-up-production-cd61.up.railway.app/mcp/agent-81","elapsed_ms":1996,"final_url":"https://rail… (341 chars — expand)
{"declared":"https://railway-up-production-cd61.up.railway.app/mcp/agent-81","elapsed_ms":1996,"final_url":"https://railway-up-production-cd61.up.railway.app/mcp/agent-81","http_status":404,"index":0,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://railway-up-production-cd61.up.railway.app/mcp/agent-81"}- endpoints_answered_not_live
- 1
- endpoints_declared
- 1
- endpoints_live
- 0
- endpoints_our_error
- 0
- endpoints_payment_gated
- 0
- endpoints_probeable
- 1
- endpoints_probed
- 1
- endpoints_refused
- 0
checked at 2026-10-07T19:37:51.488079Z
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 2026-10-07T08:37:05.636537Z
Check it again, now
outside the censusOn-chain snapshot
base- token id
- 20681
- owner
- 0x7667a819ddbd82a3810b1d1f831b59cd566f3168
- block
- 52,281,733
- observed
- 2026-10-07T08:37:05.641280Z
What the fetch saw
data- scheme
- data
- request url
- —
- final url
- —
- http status
- —
- content type
- —
- size
- 1,495 bytes
- sha256
- f4d8afb1d0d335a7b698249a69775cb697005e222658459c8fb922372af02198
- 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