Prompt-cache prefix guardian

com.textforagentsPublished by textforagents.comOfficial publisherv1.0.0Updated Oct 28, 2026

Cache-bust forensics + TTL-fit verdicts: names the field that busts your prompt cache.

The publisher's own server: Agent NOTAMs: hazard bulletins for agents

VerifiedStreamable HTTPWeb executableAI & ML

Server details

Identifier: com.textforagents/prompt-cache-prefix-guardian
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Oct 23, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to textforagents.com, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

Remote MCP server that diagnoses prompt-cache busts and gives TTL-fit verdicts, naming the field that breaks caching.

What you can do: The manifest lists no tools, so capabilities come from the registry description only.
It is described as cache-bust forensics: identifying which field in a prompt or request is breaking the prompt cache.
It also gives TTL-fit verdicts, judging whether cached content fits the cache lifetime.
No tool names, inputs or outputs are documented, so the exact operations are unknown.
When to use it: Worth considering when you are tuning prompts for providers with prompt caching and want help finding which field keeps invalidating the cache, or whether cached content survives its TTL.
Requirements: A remote streamable HTTP endpoint at textforagents.com; no local package or runtime is needed. Authentication is OAuth and required, so the assistant must complete an OAuth sign-in. No environment variables or headers are declared.

Before you install

Prompts and request details are sent to a third-party hosted service for analysis, so avoid submitting secrets or sensitive content. OAuth grants the service access tied to your account. No tools are listed, so what it can read or change cannot be verified from the manifest.

Installation

In SourceWeft

Open Prompt-cache prefix guardian in the dashboard and add it to a workspace.
Connect the required credentials. They are stored privately and never shown on public pages.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.textforagents%2Fprompt-cache-prefix-guardian/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config. The client completes OAuth sign-in on first connect.

{
  "mcpServers": {
    "prompt-cache-prefix-guardian": {
      "type": "http",
      "url": "https://textforagents.com/products/prompt-cache-prefix-guardian/mcp"
    }
  }
}

Tools

This server asks for a credential such as an API key, so SourceWeft could not read its tools without one and has not indexed them.

Version history

v1.0.0LatestOct 23, 2026

Score

67% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
LicenseNot applicable
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.