garden_postJournalEntry
Post a draft journal entry (POST /v1/garden/journal-entries/{entry}/post)
This record as markdown: /tools/onesi-genesis-mcp/garden-postjournalentry.md
What garden_postJournalEntry does on Genesis
AI agents use garden_postJournalEntry to create or update resources in Genesis, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Genesis environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
entry | string | Yes | Journal entry id (je_...) |
if_match | string | integer | Yes | The version you read (the `version` field of the object you are changing, or its ETag); a stale version is a 409 |
Parameters from the server's own tool schema.
Why garden_postJournalEntry is rated Medium
An AI agent can call garden_postJournalEntry faster than any human can review: one bad instruction and it creates or modifies resources in Genesis by the hundred, each call as confident as the last.
Attacks that exploit this kind of access
The rule that runs garden_postJournalEntry safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Genesis, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For garden_postJournalEntry, this is the rule to start with:
garden_postJournalEntry stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Genesis, apply this rule, and every garden_postJournalEntry call is checked against it from then on.
Questions about garden_postJournalEntry
Post a draft journal entry (POST /v1/garden/journal-entries/{entry}/post). It is categorised as a Write tool in the Genesis MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
garden_postJournalEntry accepts 2 parameters: entry, if_match. Required: entry, if_match. The full parameter table on this page comes from the server's own tool schema.
Register the Genesis MCP server in PolicyLayer and add a rule for garden_postJournalEntry: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Genesis. Nothing to install.
garden_postJournalEntry is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the garden_postJournalEntry rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for garden_postJournalEntry. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
garden_postJournalEntry is provided by the Genesis MCP server (@onesi/genesis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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