# getFeeForMessage
## getFeeForMessage — Estimate fee for a message
> Get the fee the network will charge for a particular Message. Version Restriction : This method is only available in solana-core v1.9 or newer. Please use getFees for solana-core v1.8 and below.\
> \*\*Parameters\*\*\
> \
> 0\. \`message\` (required) — Base-64 encoded compiled transaction message (the \`Message\`, not a full transaction). Used by \`getFeeForMessage\`.\
> 1\. \`config\` (optional) — Optional configuration object. Every field is optional; omit the entire object to use defaults.
```json
{"openapi":"3.0.3","info":{"title":"Solana RPC: getFeeForMessage","version":"1.0.0"},"tags":[{"name":"Fees","description":"Solana RPC fees method."}],"servers":[{"url":"https://public.rpc.solanavibestation.com","description":"Public endpoint (rate-limited, no auth)"},{"url":"https://lite.rpc.solanavibestation.com","description":"Lite tier"},{"url":"https://basic.rpc.solanavibestation.com","description":"Basic tier"},{"url":"https://ultra.rpc.solanavibestation.com","description":"Ultra tier"},{"url":"https://elite.rpc.solanavibestation.com","description":"Elite tier"},{"url":"https://epic.rpc.solanavibestation.com","description":"Epic tier"},{"url":"https://basic.swqos.solanavibestation.com","description":"Basic tier with Stake-Weighted QoS"},{"url":"https://ultra.swqos.solanavibestation.com","description":"Ultra tier with Stake-Weighted QoS"},{"url":"https://elite.swqos.solanavibestation.com","description":"Elite tier with Stake-Weighted QoS"}],"security":[{},{"AuthHeader":[]},{"URLParameter":[]}],"components":{"securitySchemes":{"AuthHeader":{"type":"apiKey","in":"header","name":"Authorization","description":"Pass `Authorization: ` on each request."},"URLParameter":{"type":"apiKey","in":"query","name":"api_key","description":"Pass `?api_key=` on the URL."}},"schemas":{"Commitment":{"type":"string","enum":["processed","confirmed","finalized"],"default":"finalized","description":"How finalized a block is at query time:\n- `processed`: most recent block, may be skipped\n- `confirmed`: block confirmed by supermajority of cluster\n- `finalized`: block finalized by the cluster (>2/3 stake)"},"JsonRpcEnvelope":{"type":"object","required":["jsonrpc","id"],"description":"Base envelope of every JSON-RPC 2.0 response.","properties":{"jsonrpc":{"type":"string","enum":["2.0"]},"id":{"oneOf":[{"type":"string"},{"type":"integer"}],"description":"Echoed request id."}}},"Context":{"type":"object","description":"RPC context block returned alongside most account-level results.","required":["slot"],"properties":{"slot":{"type":"integer","format":"int64"},"apiVersion":{"type":"string"}}},"JsonRpcErrorResponse":{"type":"object","required":["jsonrpc","id","error"],"description":"JSON-RPC 2.0 error response.","properties":{"jsonrpc":{"type":"string","enum":["2.0"]},"id":{"oneOf":[{"type":"string"},{"type":"integer"}]},"error":{"$ref":"#/components/schemas/JsonRpcError"}}},"JsonRpcError":{"type":"object","required":["code","message"],"description":"Structured JSON-RPC error.","properties":{"code":{"type":"integer","description":"Numeric error code per JSON-RPC 2.0 spec. Common values:\n- `-32700` Parse error\n- `-32600` Invalid Request\n- `-32601` Method not found\n- `-32602` Invalid params\n- `-32603` Internal error\n- `-32003` Unauthorized\n- `-32005` Too Many Requests\n- `-32015` Transaction version not supported\n"},"message":{"type":"string"},"data":{"type":"object","additionalProperties":true}}}},"responses":{"UnauthorizedError":{"description":"Authentication required or invalid.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/JsonRpcErrorResponse"}}}},"ForbiddenError":{"description":"Insufficient permissions for the request.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/JsonRpcErrorResponse"}}}},"TooManyRequestsError":{"description":"Rate limit exceeded for this tier.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/JsonRpcErrorResponse"}}}},"InternalServerError":{"description":"Unexpected server error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/JsonRpcErrorResponse"}}}}}},"paths":{"/":{"post":{"operationId":"getFeeForMessage","summary":"getFeeForMessage — Estimate fee for a message","tags":["Fees"],"description":"Get the fee the network will charge for a particular Message. Version Restriction : This method is only available in solana-core v1.9 or newer. Please use getFees for solana-core v1.8 and below.\n**Parameters**\n\n0. `message` (required) — Base-64 encoded compiled transaction message (the `Message`, not a full transaction). Used by `getFeeForMessage`.\n1. `config` (optional) — Optional configuration object. Every field is optional; omit the entire object to use defaults.\n","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","required":["jsonrpc","id","method","params"],"properties":{"jsonrpc":{"type":"string","enum":["2.0"],"description":"JSON-RPC protocol version."},"id":{"oneOf":[{"type":"string"},{"type":"integer"}],"description":"Request identifier echoed back in the response."},"method":{"type":"string","enum":["getFeeForMessage"],"description":"Must be `getFeeForMessage`."},"params":{"type":"array","description":"Positional parameters. Each item below corresponds to one position in the array, in order.","minItems":1,"maxItems":2,"items":{"anyOf":[{"title":"message","type":"string","description":"Base-64 encoded compiled message."},{"title":"config (optional)","type":"object","description":"Optional configuration object. Every field is optional; omit the entire object to use defaults.","properties":{"commitment":{"$ref":"#/components/schemas/Commitment"},"minContextSlot":{"type":"integer","format":"int64","description":"Minimum slot at which the request can be evaluated. The RPC node will reject the request with a `MinContextSlotNotReached` error if its current root is below this value. Use this for read-after-write consistency in multi-step workflows."}}}]}}}}}}},"responses":{"200":{"description":"Successful `getFeeForMessage` response.","content":{"application/json":{"schema":{"allOf":[{"$ref":"#/components/schemas/JsonRpcEnvelope"},{"type":"object","required":["result"],"properties":{"result":{"type":"object","required":["context","value"],"properties":{"context":{"$ref":"#/components/schemas/Context"},"value":{"type":"integer","format":"int64","description":"Fee in lamports, or null if message could not be decoded.","nullable":true}}}}}]}}}},"401":{"$ref":"#/components/responses/UnauthorizedError"},"403":{"$ref":"#/components/responses/ForbiddenError"},"429":{"$ref":"#/components/responses/TooManyRequestsError"},"500":{"$ref":"#/components/responses/InternalServerError"}}}}}}
```
---
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