Builder field guide · Base

A token check is only as useful as its evidence.

Successful selling in a simulation answers one question. It does not establish every permission in a contract, the distribution of holders, or the quality of its market. Here is how to read an AgentProof result before your next decision.

Published 18 September 2026 · Product behavior and prices checked on this date.

1. Separate market data from security checks

The free preview identifies a Base token and reports available trading-pair market data, including liquidity and volume. It does not issue a security verdict. The free coverage check tells you which categories currently have enough data for our checks. Availability can change between that check and a paid report.

Three different questions
ToolWhat you learnPrice
Market previewAvailable market snapshot and its timestampFree
Coverage checkAvailability of contract, ownership and market evidenceFree
Token reportFindings, available checks and coverage-aware verdict0.25 USDC

2. Read INCOMPLETE as missing evidence

INCOMPLETE is neither a clean result nor a fraud finding. It means required checks could not all be completed. A null score is unknown, not zero. Known material risks can still produce WARN or BLOCK even when other evidence is missing. ALLOW describes the completed automated checks; it is not a guarantee.

Upgradeable proxy contracts are one source of complexity. GoPlus documents that some fields may be absent for proxies or contracts without verified source. Paying for an API plan alone does not establish that those missing fields will become available. See the provider's field definitions.

3. Try coverage before paying

This request checks data availability for USDC on Base. It does not connect a wallet or purchase a report:

curl https://kushbitx.com/api/token-coverage \
  -H 'Content-Type: application/json' \
  -d '{"chain":"base","address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}'

If your agent needs complete evidence and a category is partial or unavailable, pause its decision and inspect what is missing. Do not substitute zero for null, infer safety from a successful HTTP response, or ask it to spend automatically.

Run your first free check

Use the browser, or copy instructions into an agent that can make HTTP requests. No account, API key or wallet is needed for these free checks.

4. Know what the paid request delivers

A delivered token report costs 0.25 USDC even if its verdict is INCOMPLETE. Review free coverage and the displayed fee first. Stored reports can be restored for 30 days using the private recovery details; restoration returns the original result and timestamp, not a new analysis. A pending payment is a reason to check recovery, not authorize another payment.

Other AgentProof services are separate: unsigned Base transaction preflight is 0.05 USDC; Base USDC payment verification is 0.01 USDC. They answer different questions and do not make a token report complete.

Building an integration?

Start with the OpenAPI specification, agent instructions or runnable example. The example defaults to a free preview. Tell us one integration obstacle through the feedback form.

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