complete_wave_gate

SERVERMeridian SOURCE@meridianmcp/mcp

High RISK CLASS

Category Execute

Parameters 72 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-ajc3xc-meridian/complete-wave-gate.md

WHAT IT DOES

What complete_wave_gate does on Meridian

AI agents invoke complete_wave_gate to trigger actions in Meridian. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

Parameter	Type	Required	Description
`actor`	string	—	Optional session_id or actor name to record who completed the gate.
`version`	string	—	ed8e4524 — Optional sprint-version bucket this gate belongs to (e.g. 'v0.2.6'). Wins over session_id's resolved scope. Omit (and omit session_id) for the legacy
`project_id`	string	—
`session_id`	string	—	ed8e4524 — Optional: resolve the version scope from this session's own sprint_version (same helper handoff._resolve_session_sprint_version uses for checkpoint)
`wave_label`	string	Yes	The wave whose gate is being completed, e.g. 'wave-1'. Must match the wave field on sprint_items that were just executed.
`project_name`	string	—	Project name — an alternative to project_id; resolved to the id internally. project_id wins if both are given.
`verification_payload`	object	Yes	The FULL dict returned by run_verification. Must have status='ok' and exit_code=0. Any other value (non-zero exit, error, not_configured, not_connected) is reje

Parameters from the server's own tool schema.

RISK

Why complete_wave_gate is rated High

This tool triggers and validates completion of external operations (push, deploy, wait, run_verification) and writes gate results to persistent state, unblocking subsequent pipeline waves. It executes and coordinates real external operations and modifies workflow state, placing it firmly in the Execute category with high severity due to its ability to unblock deployment pipelines and trigger downstream actions.

From the tool's definition EXECUTOR GATE: call this AFTER you have actually run a wave's gate action list (push, deploy, wait, run_verification) to unblock the next wave's sprint items...

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs complete_wave_gate safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Meridian, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For complete_wave_gate, this is the rule to start with:

complete_wave_gate Rate-limited

complete_wave_gate stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "complete_wave_gate": {
      "limits": [
        {
          "counter": "complete_wave_gate_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Meridian, apply this rule, and every complete_wave_gate call is checked against it from then on.

FAQ

Questions about complete_wave_gate

What does the complete_wave_gate tool do? +

[SUPPORT] d2430713 — EXECUTOR GATE: call this AFTER you have actually run a wave's gate action list (push, deploy, wait, run_verification) to unblock the next wave's sprint items. You MUST pass the REAL structured result from run_verification as verification_payload — the server validates it (status=='ok', exit_code==0). A self-report ('I think it passed') or a fabricated payload is rejected with a clear error. On success, writes a wave_gate_results row and returns {gate_completed, wave_label, next_wave_label, next_wave_item_count, next_wave_item_ids, gate_id}. Each wave gate may only be completed once (duplicate calls return an error). Security note: this is a deploy-adjacent gate — only actual run_verification output satisfies it. ed8e4524 — SCOPED TO SPRINT VERSION: pass version (or session_id to auto-resolve the calling session's scope) so two different sprint versions that happen to share the SAME wave_label (e.g. both have a 'wave-2') never satisfy or unblock each other's gate — omit both to keep the exact prior project-wide behavior for a single-version project. Persistent-state disclosure: on hosted Meridian, supplied text and project/session metadata are sent to and stored in Meridian's service; self-hosted deployments keep them in the configured local SQLite/Postgres database. This data is visible in the dashboard/API and later project context or handoffs. Delete individual tasks, notes, or decisions where supported, or delete the project/account using the documented controls. Do not include secrets. It is categorised as a Execute tool in the Meridian MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

What parameters does complete_wave_gate accept? +

complete_wave_gate accepts 7 parameters: actor, version, project_id, session_id, wave_label, project_name, verification_payload. Required: wave_label, verification_payload. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on complete_wave_gate? +

Register the Meridian MCP server in PolicyLayer and add a rule for complete_wave_gate: 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 Meridian. Nothing to install.

What risk level is complete_wave_gate? +

complete_wave_gate is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit complete_wave_gate? +

Yes. Add a rate_limit block to the complete_wave_gate 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.

How do I block complete_wave_gate completely? +

Set action: deny in the PolicyLayer policy for complete_wave_gate. 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.

What MCP server provides complete_wave_gate? +

complete_wave_gate is provided by the Meridian MCP server (@meridianmcp/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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