Agent

Agent 2

base|id 59285|owner 0x89ca143c42c22d0b0d24d6d2bfe00050331c6ef8

Checks 1–7

Agent 2 buys market signals from Agent 1 (sigmasynth, agent 59270 on this registry) over x402, and trades on them via smart contract on Base. Both agents are run by the same operator — the demonstration is the verifiable record of agent-to-agent commerce, not independence. Each cycle Agent 2 first buys a risk-regime attestation from GBLIN (gblin.digital, a different operator) over x402 for 0.003 USDC, then pays sigmasynth's x402 endpoint 0.02 USDC for the latest signal state, applies the fixed decision rule pinned below (the sha256 of the published rule file), and, when the rule says trade, swaps USDC/WETH on Uniswap v3 on Base mainnet. Every cycle is recorded as a trade-execution claim in the Markovian transparency log, linked by prior to the x402 settlement claims of both purchases it acted on.

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
0x89ca143c42c22d0b0d24d6d2bfe00050331c6ef8
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
59285
tx_hash
0x3161cd4f5aedef66e6b9c64f44ec28a1a41fac3cd85957e303fd13ddc888d0d3
checked at 2026-10-07T15:58:02.458113Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
elapsed_ms
1559
final_url
https://markovianprotocol.com/.well-known/agent2-registration.json
http_status
200
request_url
https://markovianprotocol.com/.well-known/agent2-registration.json
scheme
https
uri
https://markovianprotocol.com/.well-known/agent2-registration.json
checked at 2026-10-07T15:58:02.458113Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
4940
body_sha256
f58c84cf0d97bb31a725b38ba9e55ea752db2d732c4929aed4ba696c243d4c7a
content_type
application/json; charset=utf-8
checked at 2026-10-07T15:58:02.458113Z
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
1
services_field_source
services
services_status
present
should_gaps
image, services[].version
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T15:58:02.458113Z
Claims its identity?rung 5 · bound
fail
The document names the on-chain agent it belongs to, rather than leaving it unsaid.
did not pass
declared_agent_id
59895
declared_chain
8453
declared_registry
eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
match
false
registrations_seen
1
checked at 2026-10-07T15:58:02.458113Z
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://markovianprotocol.com/trace.html","elapsed_ms":1402,"final_url":"https://markovianprotocol.com/trac… (967 chars — expand)
{"declared":"https://markovianprotocol.com/trace.html","elapsed_ms":1402,"final_url":"https://markovianprotocol.com/trace.html","http_status":200,"index":0,"kind":"https","name":"web","outcome":"live","probed":true,"probed_url":"https://markovianprotocol.com/trace.html"}, {"declared":"https://log.markovianprotocol.com","elapsed_ms":392,"final_url":"https://log.markovianprotocol.com/","http_status":200,"index":1,"kind":"https","name":"transparency-log","outcome":"live","probed":true,"probed_url":"https://log.markovianprotocol.com"}, {"declared":"did:key:z6Mkk2jGag24mC6231sa8yMyUwDwWEEaeRSxsTYdHGfpMpCY","index":2,"kind":"caip10","name":"DID","probed":false}, {"declared":"https://markovianprotocol.com/signal/latest","elapsed_ms":1067,"final_url":"https://markovianprotocol.com/signal/latest","http_status":402,"index":3,"kind":"https","name":"x402","outcome":"live","payment_gated":true,"probed":true,"probed_url":"https://markovianprotocol.com/signal/latest"}
endpoints_answered_not_live
0
endpoints_declared
4
endpoints_live
3
endpoints_our_error
0
endpoints_payment_gated
1
endpoints_probeable
3
endpoints_probed
3
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 2026-10-07T15:58:02.458113Z

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: 59285
owner: 0x89ca143c42c22d0b0d24d6d2bfe00050331c6ef8
block: 52,281,733
observed: 2026-10-07T15:58:02.461088Z

tokenURIopen →

https://markovianprotocol.com/.well-known/agent2-registration.json

What the fetch saw

https

scheme: https
request url: https://markovianprotocol.com/.well-known/agent2-registration.json
final url: https://markovianprotocol.com/.well-known/agent2-registration.json
http status: 200
content type: application/json; charset=utf-8
size: 4,940 bytes
sha256: f58c84cf0d97bb31a725b38ba9e55ea752db2d732c4929aed4ba696c243d4c7a
elapsed: 1,559 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