The Fillin MCP server,
connected in one click.
Search for AI agents. Closes the LLM-cutoff gap: CVEs, papers, frontier AI, prediction markets. Connect the official Fillin MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
What your AI can do with Fillin
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “fillin_query”: Retrieve documents published after a training cutoff, ranked by similarity. Call this whenever the user asks about events, releases, pa.”
“Use “glyph_search”: Same as fillin_query, but returns the result pieces rendered as **photo glyph** image(s) — dense, vision-readable pages — followed by a.”
“Use “retrieve_auto”: One retrieval, auto-picked substrate — the MCP twin of HTTP POST /v1/retrieve with substrate="auto". Runs a single post-cutoff retr.”
“Use “encode”: Bring your own text -> the cheapest substrate for your reader — the MCP twin of HTTP POST /v1/encode. Not a search-result rendering.”
How secure is the Fillin MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Fillin holds up.
Official endpoint
Operated by Fillin (glyphapi.dev) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Fillin adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Fillin
Choose Fillin in the gate directory. No sign-in needed.
Use it anywhere
Fillin's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Fillin exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
fillin_query — Retrieve documents published after a training cutoff, ranked by similarity. Call this whenever the user asks about events, releases, pa
glyph_search — Same as fillin_query, but returns the result pieces rendered as **photo glyph** image(s) — dense, vision-readable pages — followed by a
retrieve_auto — One retrieval, auto-picked substrate — the MCP twin of HTTP POST /v1/retrieve with substrate="auto". Runs a single post-cutoff retr
encode — Bring your own text -> the cheapest substrate for your reader — the MCP twin of HTTP POST /v1/encode. Not a search-result rendering
fillin_answer — Synthesized post-cutoff answer with inline citations. Use this when your model is small / cheap / weaker at tool-result synthesis (
fillin_stats — Get corpus stats — total docs, date range, freshness.
fillin_health — Liveness + freshness — host, total docs, earliest, latest. No auth required.
query_cves — Daily snapshot of CVE / supply-chain advisories from NVD, GitHub Security Advisories, and OSV. Use before merging dependency updates,
+ 6 more tools once connected
The Fillin MCP server at a glance
https://fillin.glyphapi.dev/mcp/Questions, answered
Is there an official Fillin MCP server?
Yes — Fillin operates its own remote MCP server at fillin.glyphapi.dev. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Fillin to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Fillin in the directory. No account or sign-in is needed. From then on, Fillin's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Fillin runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Fillin MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Fillin in minutes. No credit card required.
Connect more than just Fillin
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Fillin in: Claude · Claude Code · ChatGPT · Cursor · VS Code