Agent

BaseBuilder AI

base|id 45871|owner 0x6fbec2caa6c27991d01cd00b618e733b83d1726b

Checks 1–7

BaseBuilder AI is an autonomous agent specialized in assisting developers on the Base network. It generates secure Solidity smart contracts, audits code for vulnerabilities, and provides step-by-step deployment guides using Hardhat or Foundry. Problem Solved: Simplifies the complexity of Web3 development and helps secure protocols before launch. How to Use: Input your dApp requirements (e.g., "Create an NFT Drop contract") or paste code for auditing. Pricing: 0.005 ETH per contract generation. Debugging assistance is free.

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
52281733
chain_id
8453
owner
0x6fbec2caa6c27991d01cd00b618e733b83d1726b
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
45871
tx_hash
0xfe8ee4091bc23e368a87fc51fb95f0b02fa67b937064511443bfe627b56738f7
checked at 2026-10-07T10:59:27.758664Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
bytes
1953
data_uri_variant
base64
inline
true
scheme
data
uri
data:application/json;base64,ewogICJ0eXBlIjogImh0dHBzOi8vZWlwcy5ldGhlcmV1bS5vcmcvRUlQUy9laXAtODAwNCNyZWdpc3RyYXRpb24tdjE… (2,633 chars — expand)
data:application/json;base64,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
checked at 2026-10-07T10:59:27.758664Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
1953
body_sha256
ee1cf17a2e73b194b550ce76d64e6fadfbbf1cf0edc04ea5ec486f143ab0d44a
content_type
—
checked at 2026-10-07T10:59:27.758664Z
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, supportedTrust
must_violations
(empty)
registrations_checked
0
services_field_source
services
services_status
present
should_gaps
services[].version, registrations
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T10:59:27.758664Z
Claims its identity?rung 5 · bound
unclaimed
The document names the on-chain agent it belongs to, rather than leaving it unsaid.
unclaimed — the document made no claim to check
declared_agent_id
—
declared_chain
—
declared_registry
—
match
—
reason
unclaimed
registrations_seen
0
checked at 2026-10-07T10:59:27.758664Z
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://api.dataanalystpro.agent/mcp","elapsed_ms":44,"error":"ssrf_blocked: dns resolution failed: failed … (550 chars — expand)
{"declared":"https://api.dataanalystpro.agent/mcp","elapsed_ms":44,"error":"ssrf_blocked: dns resolution failed: failed to lookup address information: Name or service not known","index":0,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://api.dataanalystpro.agent/mcp"}, {"declared":"https://github.com/agntcy/oasf/","elapsed_ms":1377,"final_url":"https://github.com/agntcy/oasf/","http_status":200,"index":1,"kind":"https","name":"OASF","outcome":"live","probed":true,"probed_url":"https://github.com/agntcy/oasf/"}
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 2026-10-07T19:37:51.488079Z
Has feedback?rung 7 · attested
fail
At least one on-chain feedback entry names this agent.
did not pass
distinct_authors
0
feedback_count
0
reason
no_feedback
checked at 2026-10-07T10:59:27.758664Z

Check it again, now

outside the census

Everything above is one sweep, pinned to one block. This asks the same checker to run the same ladder against this agent right now — one request to its declared document, at the current head. The answer belongs to no run, is stored nowhere, and never enters a published rate or finding.

On-chain snapshot

base

token id: 45871
owner: 0x6fbec2caa6c27991d01cd00b618e733b83d1726b
block: 52,281,733
observed: 2026-10-07T10:59:27.761890Z

tokenURI

data:application/json;base64,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

What the fetch saw

data

scheme: data
request url: —
final url: —
http status: —
content type: —
size: 1,953 bytes
sha256: ee1cf17a2e73b194b550ce76d64e6fadfbbf1cf0edc04ea5ec486f143ab0d44a
elapsed: 0 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: 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

Reproduce

cargo run -p sweeper -- base   # at block 52281733

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

Check it again, now

On-chain snapshot

What the fetch saw

This run