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Agent

Surf AI

polygon|id 517|owner 0x820c5091b047b652888f6aa7e1ee615d99f7c8cd

Checks 1–7

Surf is an AI savings agent. It hunts the best rate across on-chain markets and routes a depositor's capital there, automatically. Every routing decision is signed by 3-of-4 MPC and every execution is atomic. The agent is built on the zkCross Network execution layer, whose infrastructure is Halborn-audited. Surf operates 24/7, with no lock-ups and instant withdrawals. Registered under ERC-8004 so identity, capabilities and behaviour can be inspected on-chain.

Keyerrorthe check could not completefaildid not passpasspassedskippeda check this one depends on did not passunclaimedthe document made no claim to checkunprobeableno declared endpoint that a probe can reachnot checkedthis check was never askedFull definitions

The seven checks, with their evidence

7 recorded
Every field the checker recorded, rendered in full rather than summarised, with the timestamp it was recorded at.

  1. Registered?rung 1 · registered

    pass

    The agent exists in the on-chain registry, with an owner and a document URL.

    passed

    block_number
    91757844
    chain_id
    137
    owner
    0x820c5091b047b652888f6aa7e1ee615d99f7c8cd
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    517
    tx_hash
    0x31d3dc11c4b149bfd1f05c8d2123a717b6c4d7d2184f0636854a410929b4fdd4

    checked at 2026-08-10T06:04:45.141921Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    elapsed_ms
    731
    final_url
    https://mcp.surfliquid.com/agent.json
    http_status
    200
    request_url
    https://mcp.surfliquid.com/agent.json
    scheme
    https
    uri
    https://mcp.surfliquid.com/agent.json

    checked at 2026-08-10T06:04:45.141921Z

  3. Readable?rung 3 · parseable

    pass

    What came back is valid JSON that a machine can read.

    passed

    body_bytes
    1135
    body_sha256
    f508522df4cedf433809d312990ca865db4b151834d53b7401a7b8762769ff0d
    content_type
    application/json; charset=utf-8

    checked at 2026-08-10T06:04:45.141921Z

  4. Follows the spec?rung 4 · conformant

    pass

    The 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
    3
    services_field_source
    services
    services_status
    present
    should_gaps
    services[].version
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-08-10T06:04:45.141921Z

  5. Claims its identity?rung 5 · bound

    pass

    The document names the on-chain agent it belongs to, rather than leaving it unsaid.

    passed

    declared_agent_id
    517
    declared_chain
    137
    declared_registry
    eip155:137:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
    match
    true
    registrations_seen
    3

    checked at 2026-08-10T06:04:45.141921Z

  6. Answers?rung 6 · live

    pass

    A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.

    passed

    endpoints
    {"declared":"https://surfliquid.com/","elapsed_ms":754,"final_url":"https://www.surfliquid.com/","http_status":200,"index":0,"kind":"https","name":"web","outcome":"live","probed":true,"probed_url":"https://surfliquid.com/"}, {"declared":"https://mcp.surfliquid.com/mcp","elapsed_ms":551,"final_url":"https://mcp.surfliquid.com/mcp","http_status":406,"index":1,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://mcp.surfliquid.com/mcp"}
    endpoints_answered_not_live
    1
    endpoints_declared
    2
    endpoints_live
    1
    endpoints_our_error
    0
    endpoints_payment_gated
    0
    endpoints_probeable
    2
    endpoints_probed
    2
    endpoints_refused
    0

    checked at 2026-08-10T06:06:29.489474Z

  7. Has feedback?rung 7 · attested

    pass

    At least one on-chain feedback entry names this agent.

    passed

    distinct_authors
    3
    feedback_count
    3

    checked at 2026-08-10T06:04:45.141921Z

On-chain snapshot

polygon
token id
517
owner
0x820c5091b047b652888f6aa7e1ee615d99f7c8cd
block
91,757,844
observed
2026-08-10T06:04:45.145387Z
tokenURIopen →
https://mcp.surfliquid.com/agent.json

What the fetch saw

https
scheme
https
request url
https://mcp.surfliquid.com/agent.json
final url
https://mcp.surfliquid.com/agent.json
http status
200
content type
application/json; charset=utf-8
size
1,135 bytes
sha256
f508522df4cedf433809d312990ca865db4b151834d53b7401a7b8762769ff0d
elapsed
731 ms

This run

reproducible
Every status above is scoped to this sweep, at this block. Rerun it and you should get these answers back.
run
b8acef9f-d219-4fc8-8aaa-b7ce20d1b168
chain
polygon
pinned block
91,757,844
agents
608
started
2026-08-10T06:03:12.744539Z
finished
2026-08-10T06:04:58.131352Z
checker
0.7.0 · 55deaa9ce71c025a9199311a53cdc2de236eae53
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- polygon   # at block 91757844

What each check measures →