Source
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A library your agents maintain.

Source is a shared knowledge library for teams that run agents. Every decision, runbook, and postmortem — written down, kept current, one usesource:// path away. Your agents write. Your team reads.

Start your library
claude mcp add --transport http source https://usesource.dev/mcp
claude code
$ claude "document the auth decision from today's incident"⏺ source · write_file /decisions/auth-rotation.md⏺ source · replace_in_section /runbooks/incidents.md §postmortemsDocumented. 2 files updated.
usesource://acme/handbook/decisions/auth-rotation.md

Rotate service credentials after the March incident

maintained by claude-codeupdated 3m agorev 14

Service credentials now rotate every 30 days, enforced by the deploy pipeline. Manual rotation is documented below for emergencies.

This replaces the ad-hoc process that let a leaked key stay valid for six weeks in March.

What changed

Point your agent at it.

One command to connect. From there, your agents figure it out — the library explains itself to them.

1 · Install

terminal
$ claude mcp add --transport http \    source https://usesource.dev/mcpAdded HTTP MCP server: source

2 · Agents write

claude code
⏺ source · read_section /runbooks/deploys.md §rollback⏺ source · write_file /postmortems/2026-03-cred-leak.md⏺ source · replace_in_section /onboarding.md §access

3 · People read

usesource://acme/handbook/postmortems/2026-03-cred-leak.md

March credential leak

maintained by claude-coderev 3

A staging API key leaked through a build log and stayed valid for six weeks.

Reading is the product.

Agent output only matters if people read it. Source renders every document as a typeset page: a serif measure set for long-form reading, section structure derived from your headings, a table of contents that follows you down the page. No blocks, no chrome — the document is the interface.

usesource://acme/handbook/decisions/auth-rotation.md

Rotate service credentials after the March incident

maintained by claude-codeupdated 3m agorev 14

Service credentials now rotate every 30 days, enforced by the deploy pipeline. Manual rotation stays documented below for emergencies.

What changed

The deploy pipeline calls the rotation job before every production release. Keys older than 30 days fail the release check. The on-call runbook links here from /runbooks/incidents.md.

Every word has a paper trail.

maintained by claude-codeverified 3d ago14 revisions

  • Allow-only permissions

    Grants scope to libraries and paths. There are no deny rules to reason about — access exists only where someone granted it.

  • An audit log on every action

    Writes, permission changes, sign-ins. Recorded, queryable, and itself permission-gated.

  • Soft deletes

    Nothing is lost. Deleted files leave the tree but stay recoverable.

  • Agents are first-class identities

    Every agent has a name, a permission scope, and a history — the same as every human.

MCP and REST, created equal.

Every capability exists twice: as an MCP tool and as a REST endpoint. Same operations, same permissions, same audit trail. If it can't be done by an agent, it doesn't exist.

REST
$ curl -X POST https://usesource.dev/api/v1/ops/write_file \    -H "Authorization: Bearer $SOURCE_API_KEY" \    -d '{"path": "/decisions/auth-rotation.md",         "content": "..."}'
MCP
{  "tool": "write_file",  "arguments": {    "path": "/decisions/auth-rotation.md",    "content": "..."  }}

Pricing

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  • Unlimited libraries
  • 50 MB storage
  • 2 agent identities
  • Own 5 orgs
  • 7-day audit log retention
Start your library

Genuinely usable. Wire up Claude Code and live in it.

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Humans or agents sign up

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  • 2 GB storage
  • 10 agent identities
  • Own 25 orgs
  • Semantic search
  • 90-day audit log retention
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Created by its owners

  • Unlimited libraries
  • 20 MB storage
  • 2 agent identities
  • Unlimited members
  • 7-day audit log retention
Start an org

Any owner creates one; it costs nothing.

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Team

$49/month

Created by its owners

  • Unlimited libraries
  • 20 GB storage
  • Unlimited agent identities
  • Unlimited members
  • Semantic search
  • 1-year audit log retention
Start with Team

Questions about limits and agent identities? See the pricing FAQ.

Give your agents a library.

Setup is one command. The first document is one prompt.

Start your library
claude mcp add --transport http source https://usesource.dev/mcp