Borrowing it
Nothing to install: this file belongs to prest/prest-mcp-adapter. 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/prest/prest-mcp-adapter/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/prest/prest-mcp-adapterWrote 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/prest/prest-mcp-adapter/copilot-instructions)<a href="https://agentmods.dev/instructions/prest/prest-mcp-adapter/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/prest/prest-mcp-adapter/copilot-instructions/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/prest/prest-mcp-adapter/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/prest/prest-mcp-adapter/copilot-instructions.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 | $0.00513 | $0.00513 |
| Opus 5.5 | $0.00205 | $0.00205 |
| Sonnet 5.5 | $0.00103 | $0.00103 |
| Haiku 4.5 | $0.00051 | $0.00051 |
Grade A, and why
prest-mcp-adapter copilot-instructions.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.
What it actually says
prest-mcp-adapter — agent / Copilot instructions
What this repo is
prest-mcp is a stdio → HTTP transport bridge for pREST’s /_mcp endpoint.
It is not a second MCP server. Do not add schema introspection, SQL generation, tool definitions, or pREST business logic here.
MCP client --stdio NDJSON--> prest-mcp --HTTP POST--> pREST /_mcp
Layout
| Path | Role |
|---|---|
cmd/prest-mcp/ |
Entrypoint: load config, wire HTTP client, run stdio loop |
internal/config/ |
Env: PREST_MCP_URL, PREST_MCP_TOKEN, PREST_MCP_TIMEOUT_MS |
internal/transport/ |
NDJSON stdio + HTTP forwarder |
internal/proxy/ |
Dumb request/response bridging + JSON-RPC error synthesis |
internal/logging/ |
slog → stderr only |
Hard rules
- stdout = protocol only (newline-delimited JSON-RPC). Never write logs to stdout.
- stderr = logs/diagnostics via
slog. - Fail closed on missing/invalid
PREST_MCP_URL. - Pass through pREST JSON response bodies unchanged when they are JSON objects (including HTTP 4xx JSON-RPC errors).
- Synthesize JSON-RPC errors only for parse failures, network errors, empty/non-JSON HTTP bodies.
- Notifications (no
id): forward to HTTP; write nothing to stdout. - Go version: match
go.mod(currently 1.26). Format withgofmt. Wrap errors with%w.
Validate
go build ./...
go vet ./...
gofmt -l .
make test # unit tests + overall coverage >= 80%
make coverage # COVERAGE_MIN=80 scripts/check-coverage.sh
Overall statement coverage must stay at ≥80% (make coverage).
Out of scope (v0.1+)
prest-mcp doctor, Homebrew, native prestd mcp --stdio, inventing MCP tool wrappers, Content-Length framing (use NDJSON).
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.
- 2mo ago First seen · 48 lines · 513 tokens per session scan A 0e331279df18
prest-mcp-adapter copilot-instructions.md is an instructions file published in the GitHub repository prest/prest-mcp-adapter (0 stars, last pushed 4mo ago), licensed MIT. It adds 513 tokens to every session, about $0.0021 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.
prest-mcp-adapter copilot-instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| prest-mcp-adapter copilot-instructions.mdprest/prest-mcp-adapter | Instructions file | 0 | 4mo ago | MIT | A | 513 | GitHub Copilot |
| data-scientist copilot-instructions.mdrealnghon/data-scientist | Instructions file | 2 | 4mo ago | MIT | A | 373 | GitHub Copilot |
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| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
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| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |