{"slug":"agentshelf-syntexa-ch-v1-base-token-facts-a9b63d","title":"Call when an agent needs ERC-20 metadata, proxy and owner flags, a 30-day recent","host":"agentshelf.syntexa.ch","method":"POST","resource":"https://agentshelf.syntexa.ch/v1/base-token-facts","category":"code","description":"Call when an agent needs ERC-20 metadata, proxy and owner flags, a 30-day recently_deployed heuristic, and an optional holder balance for one Base token. Send token and optional holder. No LLM. Read-only. Send JSON {\"token\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\",\"holder\":\"0xd8dA6BF26964aF9D7eE","price_listed":0.01,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"holder":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"examples":[{"holder":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}],"properties":{"holder":{"description":"Optional wallet whose token balance is included. Example: 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045. Omit it to skip the balance read. EIP-55 or all one case.","examples":["0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"],"type":"string"},"token":{"description":"Token contract on Base mainnet. Example: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (Circle USDC). Returns metadata, EIP-1967 proxy flags, owner_renounced, and a 30-day recently_deployed heuristic. 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Send token and optional holder. No LLM. Read-only. Send JSON {\"token\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\",\"holder\":\"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045\"}. Exact $0.01 USDC on Base. Try unpaid POST /v1/sandbox/base-token-facts first.","last_updated":"2026-10-11T10:21:39.759Z","schemes":["exact"]}