ph-civic-data-mcp: Instructions file for Claude Code

CLAUDE.md

ph-civic-data-mcp CLAUDE.md is an instructions file for Claude Code from xmpuspus/ph-civic-data-mcp. It costs 4,321 tokens per session, scanned A, original, MIT.

A project guide for ph-civic-data-mcp, a Python package that exposes Philippine civic and public-data sources to coding agents through MCP, a standard way for tools to provide context to AI applications.

In plain words
What is it for?
Use it when modifying modules, registering tools or data sources, checking failure responses, or verifying changes against the project's current contracts.
Why use it?
It tells developers which rules, file structure, registrations, and known data-source issues must be preserved when changing the project.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is xmpuspus/ph-civic-data-mcp's own configuration. It tells Claude Code how to work on ph-civic-data-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ph-civic-data-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to xmpuspus/ph-civic-data-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/xmpuspus/ph-civic-data-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/xmpuspus/ph-civic-data-mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

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README.md
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Per session 4,321 This file is loaded in full into every session.
When invoked 4,321 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.04321 $0.04321
Opus 5.5 $0.01728 $0.01728
Sonnet 5.5 $0.00864 $0.00864
Haiku 4.5 $0.00432 $0.00432

Measured 2mo ago against content hash b8cfe14744af, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ph-civic-data-mcp 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 2mo ago.

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 · 307 lines

How it starts

The opening of the file, as written. The whole thing — 307 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md - ph-civic-data-mcp

Current project guide. Read this before changing anything here.

The original v0.1.0 build specification lives in docs/archive/v0.1-build-spec.md. Most of it is now wrong; treat it as provenance, never as instructions. Release history lives in CHANGELOG.md.

What this is

Field Value
Package ph-civic-data-mcp (PyPI)
Registry name io.github.xmpuspus/ph-civic-data-mcp
Repository xmpuspus/ph-civic-data-mcp
Current version 0.8.0
Surface 41 tools, 3 prompts, 2 resources, 19 public sources
Transport stdio only, zero hosting cost
Python 3.11+, tested on 3.11 through 3.14
Framework fastmcp>=4.0.0,<5.0.0 (4.0.2 on MCP SDK 2.1.1 as of 2026-09-04, adopted per docs/fastmcp-4-evaluation.md)
Auth None required. PAGASA_API_TOKEN optional.

Deeper background sits in project memory: project_ph_civic_data_mcp, project_psa_expansion_handoff, feedback_release_pipeline, feedback_demo_gifs, feedback_research_verification.

Contracts every change must hold

The failure envelope. A list tool returns a real list on success. On upstream failure it returns {results: [], upstream_error: true, caveats: [...]} through utils/envelope.py::failure_envelope. Never return a bare [] from an error path; an agent reads that as "no earthquakes". Composites unwrap with cross_source._unwrap_list.

Never cache an error. Only a success or a genuine negative enters CACHES. A fetch helper raises or returns an un-cached error dict. A parse that yields zero rows on a page that always has rows means drift: raise, never cache-empty. See _fetch_earthquake_list, _fetch_notices, and psa._browse.

A caveats entry carries the real error (ConnectError: ...), never just the exception class name.

A caller mistake is not an outage. The three OpenSTAT catalog tools return validation_error: true for a rejected argument and upstream_error: true only for an upstream failure.

Read the full file on GitHub · 307 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. 2mo ago Changed · +21 lines · +362 tokens per session b8cfe14744af
  2. 2mo ago First seen · 286 lines · 3,959 tokens per session scan A 11a169966ef8

Subscribe to this mod's changes

ph-civic-data-mcp CLAUDE.md is an instructions file published in the GitHub repository xmpuspus/ph-civic-data-mcp (5 stars, last pushed 8d ago), licensed MIT. It adds 4,321 tokens to every session, about $0.0173 per session on Opus 5.5. 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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