Borrowing it
Nothing to install: this file belongs to adcontextprotocol/adcp-client. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/adcontextprotocol/adcp-client/main/CLAUDE.mdgit clone --depth 1 https://github.com/adcontextprotocol/adcp-clientWrote 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.
[](https://agentmods.dev/instructions/adcontextprotocol/adcp-client/claude-md)<a href="https://agentmods.dev/instructions/adcontextprotocol/adcp-client/claude-md"><img src="https://agentmods.dev/badge/instructions/adcontextprotocol/adcp-client/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/adcontextprotocol/adcp-client/claude-md"><img src="https://agentmods.dev/badge/instructions/adcontextprotocol/adcp-client/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.07713 | $0.07713 |
| Opus 5.5 | $0.03085 | $0.03085 |
| Sonnet 5.5 | $0.01543 | $0.01543 |
| Haiku 4.5 | $0.00771 | $0.00771 |
Grade A, and why
adcp-client 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.
How it starts
The opening of the file, as written. The whole thing — 436 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AdCP Client
For AI Agents Building on AdCP
Start here: Read docs/llms.txt for a complete protocol overview
(all tools, types, error codes, examples — single fetch).
Do NOT read these files — they are machine-generated and will waste
your context: src/lib/types/*.generated.ts, src/lib/agents/index.generated.ts, schemas/
Use instead: docs/TYPE-SUMMARY.md for curated type signatures.
Key entry points: src/lib/index.ts, examples/signals-agent.ts
Building a server-side agent? Read docs/guides/BUILD-AN-AGENT.md. Storyboards live at https://adcontextprotocol.org/compliance/{version}/ (pulled into compliance/cache/{version}/ by npm run sync-schemas).
Validating a server-side agent? Read docs/guides/VALIDATE-YOUR-AGENT.md — the five-command checklist plus deep references for adcp storyboard run, adcp fuzz (T1/T2/T3), adcp grade request-signing, multi-instance testing, webhook conformance, schema-driven validation hooks, custom --invariants, the npm run compliance:fork-matrix reference-adapter regression harness (extend with your adapter path + expectedRoutes to inherit the three-gate contract), and how to read the runner's context_value_rejected diagnostics (the 💡 Hint: lines printed on failing storyboard steps).
Writing a storyboard that must pin a real collection-bearing product? Read docs/guides/COLLECTION-FIXTURE-FOUNDATION.md — the collection_selection_satisfies fixture predicate (omitted-false default, minimum_pairs, owner/host carriage), declaration-local context_outputs that capture the selected product / scoped price / collection witnesses from the same resolved graph, the protected __adcp_fixture_ context namespace, prepareStoryboardFixtures() for full/standalone/hosted parity, and the collection_set_equals_context validator. The guide also states what the foundation deliberately does NOT solve (standalone phase.skip_if, ownership verification, reporting obligations, caller branding, hosted accounting) and the hosted authorization integration hold.
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.
- yesterday Changed · +24 tokens per session dc115821faef
- 5d ago Changed · +2 lines · +156 tokens per session 1f85c85f4da3
- 6d ago Changed · +2 lines · +54 tokens per session 877ac9a4a257
- 11d ago Changed · +2 lines · +337 tokens per session 2c308d2baab2
- 12d ago Changed · +6 lines · +247 tokens per session 9d664187c447
- 14d ago First seen · 424 lines · 6,895 tokens per session scan A 8368d2b9e15c
adcp-client CLAUDE.md is an instructions file published in the GitHub repository adcontextprotocol/adcp-client (18 stars, last pushed today), licensed Apache-2.0. It adds 7,713 tokens to every session, about $0.0309 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 2026-10-13.
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