eth_sendRawTransactionSync

Submit a signed transaction and wait for the documented synchronous result profile.

Base mainnet, chain ID 8453base:rpcfree — enforced matrix policy, not measured capacity or runtime publicationAvailability: unknownValidation: parser_only

Parameter limits

JSON path	Frozen limit	Source
`$[1].schema.minimum`	`1`	OpenRPC schema constraint

Historical block retrieval is not an archive-state guarantee. Selectors must be preserved; do not substitute pending, safe, or finalized with latest.

Rate limits and tier

These are enforced product-policy values, not measured upstream capacity or an SLA. Enterprise is finite, never physical “unlimited” capacity.

Tier	Limit / access	Category
Free	3 RPS	base_send_tx
Basic	5 RPS	base_send_tx
Pro	30 RPS	base_send_tx
Business	80 RPS	base_send_tx
Enterprise	80 RPS	base_send_tx

See Base limits.

Errors

Code	Meaning here	Client action
`-32602`	Parameters fail the declared schema or upstream parser.	Fix the positional parameters; parser acceptance is not execution success.
`-32003`	The enforced category/provider budget is exhausted.	Honor `Retry-After`; no capacity SLA is implied.

Authentication/transport failures use the shared client error envelope. See Base errors.

Evidence

Fixture kind: parser_only.
Fixture source: infra-4-sety/integration-base/research/R00/import/originals/probe/bse_f20_submitmap.json at /results/0.
Fixture SHA-256: 6e248b7fb9476d6152eed911ae535cf1bf43be7e9b83a2267feaf02ba9abde51.
Fixture registry: infra-4-sety/integration-base/research/R00/import/FIXTURES_INDEX.json.
Semantic assertion: Raw 0xdeadbeef reaches RLP/unmarshalling errors. Mainnet/devaccess HTTP 400 -32602; publicnode/dRPC HTTP 200 -32600; blastapi -32602. Tenderly -32603 is ambiguous. Sync parser response does not prove sync semantics or accepted send.
Evidence boundary: only the frozen fixture assertion is reusable; it is not blanket provider or deployment evidence.

Limitations

Optional timeout documented for Alchemy; Base keyless timeout/default/codes unverified.
Base sync URL in docs failed to open and index has no sync entry; preconf-only claim unproven.
No async substitution, no hash result, no finality claim.
Availability is the frozen baseline, not deployed readiness. documented is the contract floor; evidence_kind retains unknown/source_summary.

Params schemaparser_only

JSON

[
  {
    "name": "rawTransaction",
    "required": true,
    "schema": {
      "$ref": "#/components/schemas/BaseR03_raw"
    }
  },
  {
    "name": "timeoutSeconds",
    "required": false,
    "schema": {
      "minimum": 1,
      "type": "integer"
    }
  }
]

Result schemaOpenRPC

JSON

{
  "name": "result",
  "schema": {
    "$ref": "#/components/schemas/BaseR03_receipt"
  }
}