Feature · MCP server

The write path is the agent.

Microfilm’s MCP server is the headless write path for test evidence: an AI coding agent records each test event — the procedure it ran, the work item, the result — to the server as it works, and gets back a signed, tamper-evident record. There’s no desktop app and no extension.

Point your coding agent — Claude Code, Cursor, whatever you run — at Microfilm’s Model Context Protocol server. As it tests, it writes each event to the server and Microfilm signs it on the spot. The agent is the user; the evidence is a by-product of the work it already does.

Availability · Free — the MCP server and signed records are included on every plan.

What Microfilm is · Microfilm is the evidence engine for teams and agents: a headless MCP server that AI coding agents write signed test evidence to as they work, paired with a web portal where teams search, trace, and share that evidence. Every event is signed with a KMS-backed key and chained, so any record can be verified offline.

MICROFILM mcp · write
record_event
Procedure
checkout-flow
Work item
TC-417
Result
pass
Returned
Signed · reel #1417

The problem

Agents test faster than anyone can prove the tests happened.

AI coding agents now write most of the test code and run most of the tests. Running them was never the bottleneck — proving they ran is. A green log scrolls past in a terminal and disappears; nobody can say afterward what was tested, against which work item, or what the result actually was. The output is there; the evidence isn’t.

How it works

What this gives you.

01

A headless server, not an app

Microfilm runs as a Model Context Protocol server with no UI to open. Your agent connects, calls a tool to record each test event, and keeps working. Nothing to install on a tester’s machine, because there is no tester in the loop.

MICROFILM mcp · session
connect
Transport
stdio / http
Install
none
Client
claude-code
Status
connected
02

Structured events, written as the work happens

Each event carries the procedure that ran, the work item it exercised, and the result. The record is captured at the moment of work — not reconstructed from a log or a screenshot after the fact.

MICROFILM event · payload
record_event
Procedure
checkout-flow
Work item
TC-417
Result
pass
Captured
at write time
03

A signed record returned to the agent

Every write comes back signed and chained into a tamper-evident reel. The agent — and the rest of your team — gets a record that can be verified offline, not a line in a console.

MICROFILM signed record
returned
Signed
ES256
Chained
reel #1417
Verify
offline
04

Enforced structure by default

Because evidence is written through a typed tool call, the shape is consistent across every agent and every run. The structure is enforced at the write path, so your evidence is queryable instead of a pile of free text.

MICROFILM typed write
tool schema
Tool
record_event
Fields
typed · required
Free text
rejected
Shape
consistent

Where it fits

The first step of every Microfilm record

The MCP server is where the evidence trail begins. What the agent writes here becomes a signed, tamper-evident record, lands in the evidence portal, and is the substance the requirements-traceability views are built from.

  1. 01 Write
    MCP server
  2. 02 Sign
    Signed evidence
  3. 03 Store
    Evidence portal
  4. 04 Trace
    Requirements traceability

FAQ

Common questions.

Do I need to install anything?

No. Microfilm is a headless MCP server — there’s no desktop app, browser extension, or screen recorder. You point your AI coding agent at the server and it writes evidence through a tool call as it tests.

Which agents can write to the MCP server?

Any agent that speaks the Model Context Protocol, such as Claude Code or Cursor. The agent records each test event — the procedure, the work item, and the result — as it runs.

What does the agent get back when it writes an event?

A signed, chained record. Every event is signed with a KMS-backed key (ES256) and linked into a tamper-evident reel, so the record can be verified offline by anyone you share it with.

Is writing evidence to the MCP server free?

Yes. The MCP server and signed records are included on every plan. The shared, searchable portal and requirements-traceability views are Team-and-up cloud features.

Keep exploring

Write your first signed record.

Create an account, connect your agent to the MCP server, and write your first signed record.