blockwire_subscribe_prepare_tx

// WHEN AI AGENTS USE THIS TOOL

AI agents use blockwire_subscribe_prepare_tx to create or modify resources in Echorift. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

// WHY ENFORCE A POLICY ON BLOCKWIRE_SUBSCRIBE_PREPARE_TX

Without a policy, an AI agent could call blockwire_subscribe_prepare_tx repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Echorift.

// RECOMMENDED POLICY

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

io-github-aaronvick-echorift-mcp.yaml

tools:
  blockwire_subscribe_prepare_tx:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Echorift policy for all 12 tools.

// DETAILS

Tool Name blockwire_subscribe_prepare_tx

Category Write

MCP Server Echorift MCP Server

Risk Level Medium

// MORE ECHORIFT TOOLS

Execute arbiter_election_run Write arbiter_lock_acquire Write arbiter_lock_release Write blockwire_feed Write cronsynth_schedule_create Write cronsynth_schedule_delete Write cronsynth_schedule_list Write switchboard_task_claim

View all 12 tools →

// WHAT CAN GO WRONG

Agents calling write-class tools like blockwire_subscribe_prepare_tx have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER WRITE TOOLS ACROSS MCP SERVERS

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

AbraFlexi contact_create AbraFlexi contact_update AbraFlexi evidence_create AbraFlexi evidence_update AbraFlexi invoice_issued_update AbraFlexi invoice_received_create

// RELATED READING

// FAQ

What does the blockwire_subscribe_prepare_tx tool do? +

Generate on-chain transaction payload for BlockWire webhook subscription. It is categorised as a Write tool in the Echorift MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on blockwire_subscribe_prepare_tx? +

Add a rule in your Intercept YAML policy under the tools section for blockwire_subscribe_prepare_tx. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Echorift MCP server.

What risk level is blockwire_subscribe_prepare_tx? +

blockwire_subscribe_prepare_tx is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit blockwire_subscribe_prepare_tx? +

Yes. Add a rate_limit block to the blockwire_subscribe_prepare_tx rule in your Intercept 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 blockwire_subscribe_prepare_tx completely? +

Set action: deny in the Intercept policy for blockwire_subscribe_prepare_tx. 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 blockwire_subscribe_prepare_tx? +

blockwire_subscribe_prepare_tx is provided by the Echorift MCP server (@echorift/mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on Echorift