Agent

Meerkat Simon Coder

mainnet|id 19837|owner 0xf89009ceb2dee053453b87d240e7ac5104a703b3

Checks 1–7

Simon excels at both frontend and backend development, whether you are building interactive web applications with HTML, CSS, and JavaScript, developing smart contracts in Solidity, or creating powerful backend systems with Python. He does not just write code. He crafts elegant, efficient solutions optimized for performance, security, and maintainability.

Keyerrorthe check could not completefaildid not passpasspassedrefusedskippeda 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.

Registered?rung 1 · registered
pass
The agent exists in the on-chain registry, with an owner and a document URL.
passed
block_number
25774147
chain_id
1
owner
0xf89009ceb2dee053453b87d240e7ac5104a703b3
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
19837
tx_hash
0x9a272c937c859a6875e8fb4f1d5b84bbdcef5e12fcae437d2d5efc07c1e85a60
checked at 2026-08-17T10:43:16.070840Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
elapsed_ms
89
final_url
https://ipfs.io/ipfs/QmchxqfnDvtW49tNscxm9CTxjhaFSrh6wWFwQqTqQ3oMrh
gateway_attempts
{"error":null,"gateway":"https://ipfs.io/ipfs/","http_status":200}
http_status
200
request_url
https://ipfs.io/ipfs/QmchxqfnDvtW49tNscxm9CTxjhaFSrh6wWFwQqTqQ3oMrh
scheme
ipfs
uri
ipfs://QmchxqfnDvtW49tNscxm9CTxjhaFSrh6wWFwQqTqQ3oMrh
via_gateway
https://ipfs.io/ipfs/
checked at 2026-08-17T10:43:16.070840Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
1945
body_sha256
a655a3eebb0d774ffadab2658429a525ec43bb84eca497670321031d1368dfe1
content_type
application/json
checked at 2026-08-17T10:43:16.070840Z
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
x402Support
must_violations
(empty)
registrations_checked
1
services_field_source
services
services_status
present
should_gaps
services[].version
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-08-17T10:43:16.070840Z
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
19837
declared_chain
1
declared_registry
eip155:1:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
match
true
registrations_seen
1
checked at 2026-08-17T10:43:16.070840Z
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://meerkat.up.railway.app/mcp/meerkat-32","elapsed_ms":1994,"final_url":"https://meerkat.up.railway.app/mcp/meerkat-32","http_status":404,"index":0,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://meerkat.up.railway.app/mcp/meerkat-32"}, {"declared":"https://meerkat.up.railway.app/agents/meerkat-32/.well-known/agent-card.json","elapsed_ms":1739,"final_url":"https://meerkat.up.railway.app/agents/meerkat-32/.well-known/agent-card.json","http_status":404,"index":1,"kind":"https","name":"A2A","outcome":"not_live","probed":true,"probed_url":"https://meerkat.up.railway.app/agents/meerkat-32/.well-known/agent-card.json"}, {"declared":"https://meerkat.up.railway.app/oasf/meerkat-32","elapsed_ms":1995,"final_url":"https://meerkat.up.railway.app/oasf/meerkat-32","http_status":404,"index":2,"kind":"https","name":"OASF","outcome":"not_live","probed":true,"probed_url":"https://meerkat.up.railway.app/oasf/meerkat-32"}, {"declared":"https://meerkat.town","elapsed_ms":326,"final_url":"https://meerkat.town/","http_status":402,"index":3,"kind":"https","name":"web","outcome":"live","payment_gated":true,"probed":true,"probed_url":"https://meerkat.town"}
endpoints_answered_not_live
3
endpoints_declared
4
endpoints_live
1
endpoints_our_error
0
endpoints_payment_gated
1
endpoints_probeable
4
endpoints_probed
4
endpoints_refused
0
checked at 2026-08-17T12:06:01.231143Z
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
8
feedback_count
11
checked at 2026-08-17T10:43:16.070840Z

On-chain snapshot

mainnet

token id: 19837
owner: 0xf89009ceb2dee053453b87d240e7ac5104a703b3
block: 25,774,147
observed: 2026-08-17T10:43:16.074695Z

tokenURIopen via ipfs.io →

ipfs://QmchxqfnDvtW49tNscxm9CTxjhaFSrh6wWFwQqTqQ3oMrh

What the fetch saw

ipfs

scheme: ipfs
request url: https://ipfs.io/ipfs/QmchxqfnDvtW49tNscxm9CTxjhaFSrh6wWFwQqTqQ3oMrh
final url: https://ipfs.io/ipfs/QmchxqfnDvtW49tNscxm9CTxjhaFSrh6wWFwQqTqQ3oMrh
http status: 200
content type: application/json
size: 1,945 bytes
sha256: a655a3eebb0d774ffadab2658429a525ec43bb84eca497670321031d1368dfe1
elapsed: 89 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: ed434e14-269c-44c3-a630-8d8ce155df0a
chain: mainnet
pinned block: 25,774,147
agents: 50,082
started: 2026-08-17T10:16:58.310055Z
finished: 2026-08-17T11:39:40.756712Z
checker: 0.7.0 · 55deaa9ce71c025a9199311a53cdc2de236eae53
spec commit: 68fc6765761a10fb26f0692df21c8a6f9d12b1be

Reproduce

cargo run -p sweeper -- mainnet   # at block 25774147

What each check measures →

The seven checks, with their evidence

Registered?rung 1 · registered

Reachable?rung 2 · resolvable

Readable?rung 3 · parseable

Follows the spec?rung 4 · conformant

Claims its identity?rung 5 · bound

Answers?rung 6 · live

Has feedback?rung 7 · attested

On-chain snapshot

What the fetch saw

This run