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tessera CLAUDE.md

Project instructions for Tessera, an open-source Python service and command-line tool that gives Claude Code persistent memory of a codebase. They describe its architecture, storage, integrations, plans, debates, compliance checks, and dashboard.

In plain words
What is it for?
Use them when developing or reviewing Tessera's SQLite storage, graph scanner, MCP server, debate system, plans, handoffs, dashboard, CLI, or skills.
Why use it?
They give coding agents the project-specific rules and design decisions needed to work consistently in Tessera.

Instructions file

1 21d ago A scan 1,853 tokens original MIT
View the source file dr-code/tessera
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/dr-code/tessera/claude-md
Clone the repo
git clone --depth 1 https://github.com/dr-code/tessera
Per session 1,853 This file is loaded in full into every session.
When invoked 1,853 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.01853 $0.01853
Opus 5 $0.00927 $0.00927
Sonnet 5 $0.00371 $0.00371
Haiku 4.5 $0.00185 $0.00185

Measured yesterday against content hash aaedc992f40b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tessera CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 163 lines

How it starts

The opening of the file, as written. The whole thing — 163 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tessera — CLAUDE.md

Project Overview

Tessera is an open-source Python MCP server + CLI giving Claude Code persistent codebase memory via SQLite. No license gating.

Architecture

  • src/tessera/core/ — SQLite DB, migrations, feature flags
  • src/tessera/graph/ — scanner, symbol parser, builder, scorer
  • src/tessera/mcp/ — MCP server (stdio), 11 tools (+ plan_save), turn state
  • src/tessera/debate/ — engine, codex wrapper, claude wrapper, DLP sanitizer, XML payload
  • src/tessera/plans/ — plan archive (DB + disk); save_raw_plan for non-debate plans
  • src/tessera/compliance/ — git diff vs plan targets
  • src/tessera/handoff/ — session handoff generator
  • src/tessera/dashboard/ — Flask dashboard, localhost:5050
  • src/tessera/cli.py — Click CLI entry point
  • skills/ — 14 Superpowers skills (adapted with Tessera graph context)
  • hooks/hooks.json — Plannotator ExitPlanMode hooks (visual plan review)

Key Decisions (locked)

  • Storage: SQLite with WAL mode, not JSON files
  • MCP transport: stdio only (dashboard is a separate HTTP process)
  • Debate: GPT (Codex CLI subprocess) → Claude critique → GPT respond → Claude synthesize
  • Feature flags: TESSERA_ENABLE_DEBATE, TESSERA_ENABLE_DASHBOARD, TESSERA_ENABLE_COMPLIANCE
  • Core install (no debate deps): zero remote calls, no API keys needed
  • Methodology: Superpowers skills bundled in skills/ (adapted from obra/superpowers); Plannotator hooks in hooks/hooks.json
  • plan_save MCP tool: saves raw markdown plans + parses - [ ] items into plan_checklist table; does NOT require debate workflow

Superpowers Workflow

Standard Superpowers + Plannotator flow is documented in ~/.claude/templates/project-claude.md and appears in every project's CLAUDE.md. See that template for the canonical reference.

Skills with Tessera-specific additions:

Skill Tessera adaptation
brainstorming Phase 0: graph context; Phase 4.5: codex debate (auto-triggers for complex designs)
writing-plans Phase 0: graph context; Phase 5.5: codex plan review (auto-triggers); end: plan_save
subagent-driven-development Subagent prompts include graph discipline
executing-plans Phase 0: graph context; end: tessera-verify
test-driven-development RED: graph_read existing test patterns
systematic-debugging Phase 1: graph_impact blast radius
verification-before-completion tessera-verify as final gate
finishing-a-development-branch Phase 0: tessera-verify compliance gate
requesting-code-review Tessera code-review skill as primary entry
Others Passthrough from obra/superpowers

Read the full file on GitHub · 163 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 163 lines · 1,853 tokens per session scan A aaedc992f40b

Subscribe to this mod's changes

tessera CLAUDE.md is an instructions file published in the GitHub repository dr-code/tessera (1 stars, last pushed 21d ago), licensed MIT. It adds 1,853 tokens to every session, about $0.0093 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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