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The Bloom API uses Bearer-token authentication. Pass your key on every request:

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Key format

Keys take the form blm_<chain>_live_<base58-random>, for example:
  • blm_sol_live_ — Solana key prefix. EVM keys use the blm_<chain>_live_ prefix for the relevant chain.
  • The dashboard only ever displays a masked form such as blm_sol_live_…wXyz (the last four characters of the key body).
Your key is shown once only, at creation time, and is not stored in plaintext. Copy it immediately. If you lose it, revoke it and create a new one.

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Limits and revocation

  • You may have up to 5 active keys per chain. Revoked keys do not count toward this limit.
  • Revoke a key at any time from Manage API Keys in Bloom Manager.

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Account and wallet binding

Keys are bound to your Bloom account. Every wallet address referenced in a request must belong to that account, or the request is rejected with WALLET_NOT_OWNED (400). Requests are rate-limited per user — all of your keys share one budget.