{"id":"cid-version-convert","version":"1.0.0","description":"Convert permitted CIDv0 and CIDv1 envelopes without recomputing their multihash.","supported_operations":["convert cidv0 to cidv1","convert cidv1 dag-pb to cidv0","re-encode cid version","upgrade legacy cid envelope","downgrade compatible cid envelope","preserve cid multihash during conversion"],"unsupported_operations":["computing a CID from content","converting non-dag-pb or non-sha2-256 CIDs to CIDv0"],"semantics":["Conversion preserves codec and multihash bytes.","CIDv0 is permitted only for dag-pb with a 32-byte sha2-256 multihash."],"limits":{"max_text_characters":512,"max_binary_bytes":256},"pricing":{"status":"unpriced","charge_usd":null},"input_schema":{"type":"object","additionalProperties":false,"required":["cid","target_version"],"properties":{"cid":{"type":"string","maxLength":512},"input_encoding":{"type":"string","enum":["text","hex"],"default":"text"},"target_version":{"type":"integer","enum":[0,1]},"output_base":{"type":"string","enum":["base32","base58btc"],"default":"base32"}}},"output_schema":{"type":"object","additionalProperties":false,"required":["source_version","target_version","cid","bytes_hex","standard","reference","data_version"],"properties":{"source_version":{"type":"integer"},"target_version":{"type":"integer"},"cid":{"type":"string"},"bytes_hex":{"type":"string"},"standard":{"type":"string"},"reference":{"type":"string"},"data_version":{"type":"string"}}},"examples":[{"input":{"cid":"QmYwAPJzv5CZsnAzt8auVZRnGi2hMrZrm2suKMaqWwaoFY","target_version":1},"output":{"source_version":0,"target_version":1,"cid":"bafybeie5nqv6kd3qnfjuprw2scvucpip3oda2pxyf7hyfasar4zu5flr5m","bytes_hex":"017012209d6c2be50f70695347c6da90ab413d0fdb860d3ef82fcf8282408f334e9571eb","standard":"Multiformats CID Specification 1.0","reference":"CID specification 1.0 §CIDv0/§CIDv1 and multicodec/multihash/multibase tables","data_version":"multiformats tables snapshot 2026-10-24"}},{"input":{"cid":"bafybeie5nqv6kd3qnfjuprw2scvucpip3oda2pxyf7hyfasar4zu5flr5m","target_version":0},"output":{"source_version":1,"target_version":0,"cid":"QmYwAPJzv5CZsnAzt8auVZRnGi2hMrZrm2suKMaqWwaoFY","bytes_hex":"12209d6c2be50f70695347c6da90ab413d0fdb860d3ef82fcf8282408f334e9571eb","standard":"Multiformats CID Specification 1.0","reference":"CID specification 1.0 §CIDv0/§CIDv1 and multicodec/multihash/multibase tables","data_version":"multiformats tables snapshot 2026-10-24"}}],"execute_url":"/v1/tools/cid-version-convert/versions/1.0.0/execute"}